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GF Signet 2552 Operating Instructions Manual

Made by: GF
Type: Operating Instructions
Category: Measuring Instruments
Pages: 16
Size: 5.24 MB

 

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The Signet 2552 Metal Magmeter from Georg Fischer features all-stainless steel 

construction. The PVDF nosepiece and FPM O-rings are the only other wetted materials.
The 2552 installs quickly into standard 1¼ in. or 1½ in. pipe outlets, and is adjustable to 

fit pipes from DN50 to DN2550 (2 to 102 inches). Two sensor lengths allow maximum 

flexibility to accommodate a variety of hardware configurations, including ball valves for 

hot-tap installations.

When equipped with the frequency output, the 2552 is compatible with any Signet flow 

instrument, while the S

3

L Digital output enables multi-channel compatibility with the 

Signet 8900 Multi-Parameter Flow Controller. Select the blind 4 to 20 mA current output to 

interface directly with dataloggers, PLCs or telemetry systems.

Key features include Empty Pipe Detection, LED-assisted troubleshooting, and Bi-

Directional span capability (in 4 to 20 mA models).
The Signet 3-0252 Configuration Tool is available to customize every performance feature 

in the 2552 so it can be adapted to the user's application requirements.

*3-2552.090*

3-2552.090    Rev. 6   10/18

Signet 2552 Metal Magmeter

English

Operating Instructions

Description

Table of Contents

• 

English

• 

Deutsch

• 

Français

• 

Español

• 

Italiano

• 

Português

• 

中文

3-2552-3

3-2552-2

Warranty information .............................................................................. 2

Product Registration

 ............................................................................... 2

Safety Information .................................................................................. 2

Environmental Recomendations

............................................................. 2

Specifications

 ...................................................................................... 2-3

Dimensions .............................................................................................

4

Selecting a Location ...............................................................................

4

General Installation.................................................................................

4

Vertical Installation..................................................................................

4

Horizontal Installation

 ............................................................................. 5

Sensor Conditioning

 ............................................................................... 5

Grounding ............................................................................................... 5

Preparing for Installation.........................................................................

6

H-Dimension ...........................................................................................

6

Magmeter Installation ............................................................................. 7

Frequency Output Wiring........................................................................ 9

Digital (S

3

L) Output Wiring

 ...................................................................... 9

4 to 20 mA Loop Output Wiring

 ............................................................

10

Calibration Data

 ............................................................................... 11-12

Technical Support ................................................................................. 13

Troubleshooting ....................................................................................

14

Maintenance .........................................................................................

14

Sensor Selection .................................................................................. 15

Ordering Information.............................................................................

16


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2

Signet 2552 Metal Magmeter

1.  Depressurize and vent systems without Hot-tap valve prior to 

installation or removal.

2.  Confirm chemical compatibility before use.
3.  Do not exceed maximum temperature/pressure 

specifications.

4.  Wear safety goggles or face shield during installation/service.

5.  Do not disassemble or alter product construction.

6.  Disconnect power before attempting any service or wiring.

Performance

Pipe size range

 ..................

DN50 to DN2550 (2 in. to 102 in.)

Flow Range

Minimum ............................

0.05 m/s (0.15 ft/s)

Maximum

 ...........................

 10 m/s (33 ft/s) for pipes 

 

up to DN 1200 (48 in.) 

 

3 m/s (10 ft./s) for pipes 

 

over DN 1200 (48 in.)

Linearity .............................

 ±(1% reading + 0.01 m/s) 

 

±(1% reading + 0.033 ft/s)

Repeatability

 ......................

±0.5% of reading @ 25 °C

Accuracy: 

 

     ±2% of measured value (in reference conditions where 

 

the fluid is water at ambient temperature, the sensor is 

inserted at the correct depth and there is a fully  

developed flow profile which is in compliance with 

 

ISO 7145-1982 (BS 1042 section 2.2))

Minimum Conductivity

 .......

20 µS/cm

Wetted Materials

Body and Electrodes .........

316L Stainless Steel

Insulator .............................PVDF

O-rings ...............................

FPM (standard)

Cable

 .................................

 4-cond + shield, PVC jacket 

 

(Fixed cable models) or Water-

resistant rubber cable assembly  

with Turck® NEMA 6P connector

Power Requirements

4 to 20 mA

 .........................

 24 VDC ± 10%, regulated, 

 

22.1 mA maximum

Frequency..........................

 5 to 24 VDC ± 10%, regulated, 

 

15 mA maximum

Digital (S

3

L)

 ........................

 5 to 6.5 VDC, 15 mA maximum

Reverse polarity and short circuit protected

Cable Options

  • Fixed 7.6 m (25 ft) cable

  •  Custom lengths available, contact Georg Fischer Signet

 

signet-specialproduct@georgfischer.com

  •  Detachable water tight sensor cable with Turck® connector 

sold separately, two lengths:  4 m (13 ft) or 6 m (19.5 ft)

Current Output (4 to 20 mA):  

Programmable and reversible

Factory Range

 ...................

4 to 20 mA = 0 to 5 m/s

Loop Accuracy

 ...................

 32 µA max. error 

 

(@ 25 °C @ 24 VDC)

Temp. drift ..........................

±1 µA per °C max.

Power supply rejection ......

±1 µA per V

Isolation .............................

 Low voltage < 48 VAC/DC from 

electrodes and auxiliary power

Maximum cable

 .................

300 m (1000 ft)

Max. Loop Resistance

 .......

300 Ω

Error condition ...................

22.1 mA

Caution / Warning / Danger

Indicates a potential hazard. Failure to follow all warnings 

may lead to equipment damage, injury, or death

Electrostatic Discharge (ESD) / Electrocution Danger

Alerts user to risk of potential damage to product by ESD, 

 

and/or risk of potential of injury or death via electrocution.

Personal Protective Equipment (PPE)

Always utilize the most appropriate PPE during 

installation and service of Signet products.

Pressurized System Warning

Sensor may be under pressure, take caution to vent 

system prior to installation or removal. Failure to do so 

may result in equipment damage and/or serious injury.

Note / Technical Notes

Highlights additional information or detailed procedure.

Refer to your local Georg Fischer Sales office for the most 

current warranty statement.

All warranty and non-warranty repairs being returned must 

include a fully completed Service Form and goods must be 

returned to your local GF Sales office or distributor. 

 

Product returned without a Service Form may not be warranty 

replaced or repaired.

Signet products with limited shelf-life (e.g. pH, ORP, chlorine 

electrodes, calibration solutions; e.g. pH buffers, turbidity 

standards or other solutions) are warranted out of box but not 

warranted against any damage, due to process or application 

failures (e.g. high temperature, chemical poisoning, dry-out) or 

mishandling (e.g. broken glass, damaged membrane, freezing 

and/or extreme temperatures).

Thank you for purchasing the Signet line of Georg Fischer 

measurement products.

If you would like to register your product(s), you can now 
register online in one of the following ways:

  •   Visit our website 

www.gfsignet.com.  

Under 

Service and Support

 click on  

Product Registration Form

  •  If this is a pdf manual (digital copy), 

click here

Specifications

Warranty Information

Product Registration

Safety Information

When used properly, this product presents no inherent danger 

to the environment.

Please follow all appropriate local ordinances when disposing 

of this or any product with electronic components.

Environmental Recommendations


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3

Signet 2552 Metal Magmeter

Frequency output

Compatible

 ........................

Signet 8550-3, 8900, 9900

Max. Pull-up Voltage

..........

30 VDC

Short Circuit Protected

 ......

 ≤ 30 V @ 0 Ω pull-up for one hour

Reverse Polarity

 ................

Protected to -40 V for 1 hour

Overvoltage

 .......................

Protected to +40 V for 1 hour

Max. Current Sink

 ..............

50 mA, current limited

Maximum cable

 .................

300 m (1000 ft)

Digital (S

3

L) Output

Compatible with Signet 8900 and 9900

Serial ASCII, TTL level 9600 bps

Maximum cable

 .................

 Application dependent 

 

(See 8900 manual)

Environmental

  • NEMA 4 (IP65) (fixed cable models)

  •  NEMA 6P (IP68) (Submersible cable models only): 

 

   Signet recommends maximum 3 m. (10 ft) submersion 

 

depth for maximum 10 days continuous submersion.

Standards and Approvals

  •  CE, RoHS Compliant

  •  U.S. Patent No.: 7,055,396 BI

  •   Manufactured under ISO 9001 for Quality, 

 

ISO 14001 for Environmental Management and 

 

OHSAS 18001 for Occupational Health and Safety.

 China RoHS (visit gfsignet.com for details)
  This device complies with Part 15 of the FCC rules. 

 

Operation is subject to the following two conditions:

 

(1) This device may not cause harmful interference, and 

 

(2)  This device must accept any interference received, 

including interference that may cause  

undesired operation.

Media Temperature

Operating Pressure

10

100

158 185 212

      -10

  41

20

-20

30 40 50 60 70 80 90

59 77

°F

°C

5

0

0

0.9

150

175

300

200

225

50
25

2.6

75

100

125

23

250

275

95 113 131

20.6

11.2

7.8

9.5

16.4

bar psi

14.7

18.1

12.9

4.3

6.0

19.8

2552 Magmeter

Temperature-Pressure Operating Range

Safe for operation  of the Hot-T

ap

Safe Media Pressure

and

Temperature Range

Do not use hot-tap installation where temperatures  

will exceed 40 °C or if hazardous liquids are present.

Temperature Rating

Storage Temperature .........

 -15 °C  to 70 °C (5 °F to 158 °F) 

 

in non-icing conditions

Operating Temperature

  • Ambient

 .........................

 -15 °C to 70 °C (5 °F to 158 °F) 

 

in non-icing conditions

  • Media ............................

 -15 °C to 85 °C (5 °F to 185 °F)

Max. Operating Pressure 

    20.7 bar @ 25 °C (300 psi @ 77 °F)

Hot-Tap Installation Requirements

Maximum Pressure

............

20.7 bar (300 psi)

Maximum Temp.

 ................

40 °C (104 °F)

Specifications Cont.

Warning:

  For applications with diameters greater 

than DN1200 (122 cm or 48 inches) with a fluid 

velocity exceeding 3 m / s (10 ft / s), contact your 

local sales office for technical assistance.


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4

Signet 2552 Metal Magmeter

• 

The 2552 requires a 

fully developed turbulent flow profile for accurate measurement

. Selecting the correct location in the 

piping system is critical to the performance of the magmeter.

• 

Locate the magmeter where air bubbles will not contact the electrodes.

• 

Placing the sensor in a vertical section of pipe, with flow going UPHILL is the first choice for this requirement.

• 

The piping system should be designed to keep the sensor wet at all times.

• 

In applications where the conductivity of the process liquid is less than 100 μS, magmeters should be allowed to soak in a full 

pipe for 24 hours before operation.

Locating the sensor where the flow is upward protects the sensor from exposure to air bubbles and may offset upstream turbulence 

caused by pipe conditions and other hardware.

+GF+

+

GF
+

+

GF

+

O.K.

+GF+

O.K.

+GF

+

O.K.

+GF+

20 x ID

+GF+

+

GF
+

+

GF

+

O.K.

+GF+

O.K.

+GF

+

O.K.

+GF+

20 x ID

Air pockets and bubbles 

will travel at the top of a 

horizontal pipe, so avoid 

vertical installations.

Sediments and debris 

that collect at the 

bottom of a horizontal 

pipe will interference 

with the operation.

Selecting a Location

Vertical Installation

General Installation

Recommended Installation

Located the magmeter in a 

"trap" to prevent air bubbles 

and to keep the electrodes 

wetted for best performance.

+GF+

+

GF
+

+

GF

+

O.K.

+GF+

O.K.

+GF

+

O.K.

+GF+

20 x ID

+GF+

+

GF
+

+

GF

+

O.K.

+GF+

O.K.

+GF

+

O.K.

+GF+

20 x ID

25.4 mm

(1.0 in.)

41 mm

(1.6 in.)

137 mm

(5.4 in.)

2552-2 models

290 mm 

(11.4 in.)

2552-3 models

432 mm

(17.0 in.)

2552-2 models

276.3 mm

(10.88 in.)

2552-3 models

419 mm

(16.5 in.)

32 mm 

(1.25 in.)

Acme 

threads

Dimensions

Locking

Set Screw

Threaded

Ground lug

Alignment Reference hole

Process Connector Nut

1¼ in. or 1½ in.

NPT or ISO threads

316 SS Sensor Body

Signal Cable

Sensor Adjustment Hub

ACME Threaded

outer housing

316 SS Electrodes

Overview


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5

Signet 2552 Metal Magmeter

+GF+

15 x I.D.

5 x I.D.

Reducer

+GF+

10 x I.D.

5 x I.D.

Inlet

Outlet

Flange

+GF+

50 x I.D.

5 x I.D.

Valve/Pump

+GF+

40 x I.D.

5 x I.D.

2 x 90° Elbow

3 dimensions

25 x I.D.

5 x I.D.

2 x 90° Elbow

+GF+

20 x I.D.

5 x I.D.

90° Elbow

+GF+

If the magmeter must be mounted 

in a horizontal section of pipe, 

take extra precautions to prevent 

air bubbles from passing over the 

sensor.

Select a location with suffi cient 

distance of straight pipe immediately 

upstream of the sensor. The 

dimensions illustrated here are 

intended for general guidance. 

Every piping system has unique 

characteristics, and requires 

individual evaluation.

The Magmeter output signal may be unstable immediately after installation.  Allowing the sensor to soak in a full pipe (or in any 

container of water) for 24 hours will stabilize the performance.

•  Very low conductivity fl uids may require a longer conditioning period.
•  The Magmeter may not operate properly in fl uids where the conductivity is less than 20 µS/cm.

Grounding rings on plastic pipe

(Installed between flanges)

10 cm to 1.3 m

(4 in. to 50 in.)

10 cm to 1.3 m

(4 in. to 50 in.)

FLOW 

*

Blue

Black

Brown

White

Shield

3

1

2

2

9900

ENTER

*

  See page 9 for wiring details.

Sensor Conditioning

Grounding

Horizontal Installation

The 2552 Magmeter is unaffected by moderate levels 

of electrical noise, especially if installed in a properly 

grounded metal piping system.  However, in some 

applications it may be necessary to ground portions 

of the system to eliminate electrical interference.  The 

grounding requirements will vary with each installation.

One or more of the following steps may be applied if the 

2552 Magmeter is affected by electrical noise:

  Connect a wire (14 AWG/2.08 mm

2  

recommended) 

from the ground terminal screw on the sensor nut 

directly to a local Earth ground.

  Install fl uid grounding devices immediately upstream 

and downstream of the Magmeter.

 

Connect the fl uid grounds to the Earth ground 

terminal on the 2552.

 

Use fl anged grounding rings or metal electrodes on 

plastic pipes, or metal clamps on metal pipes.

 

Fluid grounds must be in direct contact with the fl uid, 

and as near to the Magmeter as possible.

  Connect the SHIELD conductor to Earth ground 

near the instrument.


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6

Signet 2552 Metal Magmeter

H Dimension

10% of 

inside diameter

Wall Thickness

Hardware

Stack Height

The alignment of the electrodes in the pipe and the insertion depth of the electrodes in relation to the inside diameter of the pipe 

are critical to the successful operation and calibration of the system. The brass rod that is supplied with the 2552 is used to assist 

with this requirement.

The H-dimension is the distance from the TOP OF THE PIPE to the BOTTOM OF THE BRASS ROD.
The tables on pages 11-12 include the H-dimension for two of the most common pipe schedules from DN50 to DN2550 

 

(2 in. to 102 in.). If the pipe is not represented in the tables on pages 11-12, use the procedure below to determine the H-dimension.

The goal of the procedure is to place the Magmeter electrodes 10% inside of the pipe

1.  The height from the magmeter electrodes to the alignment rod is:
 

  -2 Versions:   

 

 

276.3 mm    ( 10.88 in. )

 

  -3 Versions:   

 

 

419.0 mm    ( 16.50 in. )

2.  Subtract the wall thickness of the pipe:

 

 

- Wall Thickness:   

 

 

-_____ mm    ( ______ in.)

3.  Subtract 10% of the pipe inside diameter:

 

 

- 10% of pipe id:   

 

 

-_____ mm    ( ______ in.)

4.  The result is the H-dimension. Record the result here for reference at the installation site:
 

  = H dimension:    

 

 

=_____ mm    ( ______ in.)

Preparing for Installation

H-Dimension

Hardware stack height is important

The H-dimension represents the total height 

available for the installation hardware.

If there is insufficient clearance to accommodate 

the hardware, select a longer 2552 Magmeter or 

modify the hardware to reduce the stack height.


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7

Signet 2552 Metal Magmeter

3.  Install the Magmeter into the pipe

 a.  Apply sealing tape or paste to the male threads of the process 

connector nut.

 b.  Tighten the process connector into the pipe.

•  Do not damage the locking set screw when using tools.
•  The sensor is marked to identify the downstream alignment.

  The arrow MUST point DOWNSTREAM.

•  Hold the outer sensor housing securely while threading the 

process connector nut into the fitting. This will prevent the cable 

from becoming twisted around the sensor while the process 

connector is tightened into the pipe.

 c.  Loosen the set screw in the process connector nut.

 d.  Rotate the Acme threaded outer housing until the flow arrow is 

aligned in the proper direction.

 e.  Secure the set screw sufficiently to prevent the outer housing 

 

from spinning.

 

Do not tighten the set screw yet. It may require additional adjustment.

Not supplied with the 2552 Magmeter:
   • 

Female pipe fitting (weld-on or saddle) with:

 

  •  1¼ in. NPT or ISO 7/Rc 1¼ threads (2552-2)

 

  •  1½ in. NPT or  ISO 7/Rc 1½ threads (2552-3)

   •  32 mm (1¼ in.) or 40 mm (1½ in.) ball valve (for hot tap installations)
   •  32 mm (1¼ in.) or 40 mm (1½ in.) diameter drill
   •  32 mm (1¼ in.) pipe nipple

   •  Pipe thread sealant suitable for application
   •  Pipe wrench

The following items are required to properly install the Magmeter:

Supplied with 2552 Magmeter:
   

•  Ruler

   

•  Brass alignment rod

   

•  H-dimension value for your pipe 

 

(See pages 6)

   

•  Hex wrench

   

•  2 clamp rings

   

•  Grounding screw

   

•  Anti-Seize Lubricant for stainless steel

1.  Determine the H-dimension for the pipe

  •  The tables on pages 11-12 list the H-dimension metal pipe per ANSI 36.10 and ANSI 36.19.
  •  Use the procedure on page 6 to determine the H-dimension for other types of pipe.

FLOW →

FLOW →

FLOW →

H

FLOW →

FLOW →

FLOW →

FLOW →

Set Screw

Set Screw

Wrench

FLOW →

 

Wear gloves to grip the outer sensor housing.

Magmeter Installation

2.  Prepare the pipe

 a.  Cut a 32 mm (1¼ in.) opening in the pipe.
 b.  Install a 32 mm (1¼ in.) for 2552-2, or 40 mm (1½ in.) for 2552-3 outlet onto the pipe.

 

 

This fitting must withstand pressures up to 20 bar (300 psi).

For Hot-tap installations:

   •  Thread a matching pipe nipple and ball valve into the outlet.
   •  Use a suitable paste or sealing tape to provide a leakproof connection.

  Hot- tap drilling requires special tools and skills. 

This task should only be performed by qualified personnel.

For Ball Valve installations:

  Position the ball valve handle so it is parallel to the pipe.

 

This will prevent the valve handle from interfering with the 

adjustment and alignment of the magmeter.

 

   Remember to tilt the magmeter to avoid air bubbles 

 

(see General Installation, page 4).

FLOW →

FLOW →

FLOW →

H

FLOW →

FLOW →

FLOW →

FLOW →

Set Screw

Set Screw

Wrench

FLOW →

FLOW →

FLOW →

FLOW →

H

FLOW →

FLOW →

FLOW →

FLOW →

Set Screw

Set Screw

Wrench

FLOW →

FLOW →

FLOW →

FLOW →

H

FLOW →

FLOW →

FLOW →

FLOW →

Set Screw

Set Screw

Wrench

FLOW →


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8

Signet 2552 Metal Magmeter

4.  Adjust the magmeter position and insertion depth

 a.  Insert the brass rod through the alignment reference hole located 

directly below the sensor adjustment hub.

b. 

IMPORTANT!

  Apply Anti-Seize Lubricant for stainless steel 

("Permatex" brand or equivalent) to the acme threads on the housing. 

Apply fresh lubricant whenever servicing and before retracting sensor.  

Dry operation under high fluid pressure may cause

 

permanent damage!

c.  Adjust the height of the magmeter by turning the sensor adjustment hub 

clockwise until the distance from the OUTSIDE of the pipe to the bottom 

of the alignment rod is equal to the H-dimension (as recorded on pg. 6).

5.  Secure the Magmeter in position

 a.  Secure the height adjustment by installing the two pipe 

clamps above and below the sensor adjustment hub.

 b.  Spread the clamp apart to wrap it around the outer 

housing.

 c.  Place one clamp immediately above and one clamp 

immediately below the magmeter adjustment hub.

 d.  Squeeze the clamp together until it is firmly locked 

around the housing.

FLOW →

FLOW →

FLOW →

H

FLOW →

FLOW →

FLOW →

FLOW →

Set Screw

Set Screw

Wrench

FLOW →

6.  Removal Instructions for Hot-tap Installations

    

    •  REDUCE THE PROCESS TEMPERATURE TO LESS THAN 40 °C (104 °F).  

•  REDUCE THE SYSTEM PRESSURE TO A SAFE LEVEL. 
•   WEAR SUITABLE PROTECTIVE EQUIPMENT WHEN WORKING WITH 

PRESSURIZED PIPES.

 a.  Remove the steel clamp from the top of the assembly.

 b.  Turn the sensor adjustment hub counter-clockwise until the sensor is fully retracted. 

(The alignment sensor hole should be at the top of the outer housing slot.)

 

Apply a suitable lubricant to the ACME threads to ease the retraction.

 c.  Close the valve after raising the magmeter to the top of the housing.

     

    Install a LOCKOUT TAG on the closed valve to prevent accidents!

 d.  Remove the magmeter from the top of the valve.

 e.  Loosen the locking set screw on the process connector nut.

 f.  Use one pipe wrench to hold the valve in place while turning 

 

the process connector nut with a second wrench.

 g.  Do not damage the locking set screw when using tools.

UNDER PRESSURE! 

HOLD VALVE IN PLACE! 

Turn magmeter adapter ONLY! 

CLOSE VALVE 
BEFORE REMOVING MAGMETER! 

 

DANGER! 

DO NOT 

OPEN 

THIS VAL

VE 

This lock/tag ma

only be r

emoved b

y: 

 

Name  ___________ 

 

Dept.  ____________ 

 

Expected da

te for 

completion:

 _________ 

Magmeter Installation - cont.

The distance from the 

OUTSIDE of the pipe 

to the bottom of the 

alignment rod must be 

equal to the H-dimension

FLOW → 

FLOW → 

FLOW

Set Screw

Hex Wrench

FLOW 

FLOW

FLOW

H

   CAUTION:   

Overtightening the set screw may 

damage the hex key.

 d.  Loosen the locking set screw and rotate the outer housing 

to align the brass rod with the centerline if the pipe.

  e.  When the magmeter is adjusted for the proper height and 

alignment, tighten the locking set screw firmly.

Pipe Top View 

Align Magmeter with pipe ±1°  

 


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9

Signet 2552 Metal Magmeter

The 2552 outputs an open collector frequency signal that can be connected to: 

    •  8550-3 Flow Transmitter

    •  8900 Multi-Parameter Controller 

    •  9900 Transmitter
DC power is provided to the 2552 Magmeter by all Signet instruments. 

No additional power is required. 

ALWAYS

 connect AUX power on the 8550-3 and 9900 to provide power for the 2552 output signal.

Frequency Output Wiring

Digital (S

3

L) Output Wiring

3-8900.621C

I/O Module 3-8900.401-X

1

2

3

4

5

6

7

8

9

10

11

12

13

14

+5VDC (Black)

Freq. Input (Red)

GND (Shield)

+5VDC (Black)

Freq. Input 2 (Red)

S

3

L (Red)

GND (White/Shield)

+5VDC (Black)

S

3

L (Red)

GND (White/Shield)

Analog Output 1

Analog Output 2

(if applicable)

(if applicable)

Frequency

Input

1

Frequency

Input 2

OR

S3L

Input

2

S3L

Input

1

+

-

+

-

White
Blue

Brown

Black

Shield

3-8900.621C

I/O Module 3-8900.401-X

1

2

3

4

5

6

7

8

+5VDC (Black)

Freq. Input (Red)

GND (Shield)

+5VDC (Black)

Freq. Input 2 (Red)

S

3

L (Red)

GND (White/Shield)

Frequency

Input

1

Frequency

Input 2

OR

S3L

Input

2

White
Blue

Brown

Black

Shield

D

AT

A

GND SHLD

V+

Brown

White

Blue

Black

Shield

No 

connection

D

AT

A

GND SHLD

V+

Brown

White

Blue

Black

Shield

8900 Frequency Wiring

9900 Digital (S

3

L)

Wiring

9900 Frequency

Wiring

9900 Digital (S

3

L) Wiring

3-8900.621C

I/O Module 3-8900.401-X

1

2

3

4

5

6

7

8

9

10

11

12

13

14

+5VDC (Black)

Freq. Input (Red)

GND (Shield)

+5VDC (Black)

Freq. Input 2 (Red)

S

3

L (Red)

GND (White/Shield)

+5VDC (Black)

S

3

L (Red)

GND (White/Shield)

Analog Output 1

Analog Output 2

(if applicable)

(if applicable)

Frequency

Input

1

Frequency

Input 2

OR

S3L

Input

2

S3L

Input

1

+

-

+

-

White
Blue

Brown

Black

Shield

3-8900.621C

I/O Module 3-8900.401-X

1

2

3

4

5

6

7

8

+5VDC (Black)

Freq. Input (Red)

GND (Shield)

+5VDC (Black)

Freq. Input 2 (Red)

S

3

L (Red)

GND (White/Shield)

Frequency

Input

1

Frequency

Input 2

OR

S3L

Input

2

White
Blue

Brown

Black

Shield

D

AT

A

GND SHLD

V+

Brown

White

Blue

Black

Shield

No 

connection

D

AT

A

GND SHLD

V+

Brown

White

Blue

Black

Shield

8900 Frequency Wiring

9900 Digital (S

3

L)

Wiring

9900 Frequency

Wiring

9900 Digital (S

3

L) Wiring

Non-Signet Instrument

5-24 VDC

Sensor Ground
Frequency Out

10 KΩ

White

Blue

Brown

Black

Shield

8550-3 Flow Transmitter

White

Brown

Black

Blue

Shield

Sensr IN

(RED)

Sensr V+

(BLACK)

Sensr Gnd

(SHIELD)

If connecting the 2552 Magmeter to a flow instrument 

from another manufacturer, 5 to 24 VDC power must be 

provided to the 2552.
A 10 K

 pull up resistor must also be connected between 

the +V (Black) and the Freq. Out (Brown) wires.

DC power is provided to the 2552 Magmeter by all Signet instruments. 

No additional power is required. 

ALWAYS connect AUX power on the 8900 and 9900 to provide power for the 2552 output signal.

The maximum cable length from the 2552 to the 8900 depends on the 8900 configuration. 

 

Refer to the 8900 manual for complete information.


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10

Signet 2552 Metal Magmeter

4 to 20 mA Loop Output Wiring

The 2552 Magmeter is a traditional 2-wire passive 4 to 20 mA 

loop transmitter.

• 

External loop power (21.6 to 26.4 VDC, 22.1 mA 
maximum) is required. (See Power Requirements 

 

on pg. 2)

  

The maximum loop resistance the Magmeter can 

accomodate is 300 Ω.

  

The cable length from the Magmeter to the loop 

monitor cannot exceed 300 m (1000 ft).

• 

All 2552 Magmeters are shipped from the factory with the 

4 to 20 mA output scaled for 0 to 5 m/s (0 to 16.4 ft/s).  

If this operating range is suitable, no adjustments are 

necessary.  The calibration charts in this manual list the 

20 mA setpoint for each pipe size.  Use this information to 

program the 4 to 20 mA range of the loop device 

 

(PLC, Datalogger, recorder, etc.).

4 to 20 mA 

Loop monitor

(Maximum 300 Ω)

+

+

-

-

24 VDC ± 10%

Brown

X

Blue

X

White

Loop - (Ground)

Black

Loop + (24 VDC)

Wiring the 2552-XX-12 Magmeter with 4 to 20 mA Loop Output


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11

Signet 2552 Metal Magmeter

K-Factors and Full Scale Current Values for 3-2552-2x - x - xx and 3-2552-3x - x - xx Magmeters

Pipe Size (ANSI)

Schedule

OD (Inches)

W

ALL

 (Inches)

ID (Inches)

H Dim -2 V

ersion

H Dim mm

 

-3X V

ersion

K-Factor

 

Pulse/liter

K-Factor

 

Pulse/Gal

Factory set 20 mA

 (liter/min)

Factory set20 mA

 

(GPM)

Inch

mm

Inch

mm

2

40

2.375

0.15

2.07 10 16/32

267.0

16 5/32

409.9

46.19

174.83

649.5

171.6

80

2.375

0.22

1.94 10 15/32

265.9

16 3/32

408.6

52.49

198.68

571.5

151.0

40

2.875

0.20

2.47 10 14/32

264.9

16

407.7

32.37

122.54

926.7

244.8

80

2.875

0.28

2.32

10 12/32

263.4

16

406.2

36.57

138.42

820.3

216.7

3

40

3.500

0.22

3.07 10 12/32

263.1

15 31/32

405.8

20.97

79.36

1431

378.0

80

3.500

0.30

2.90

10 9/32

261.4

15 29/32

404.1

23.47

88.82

1278

337.8

40

4.000

0.23

3.55

10 10/32

261.6

15 29/32

404.4

15.68

59.34

1914

505.6

80

4.000

0.32

3.36

10 8/32

259.7

15 27/32

402.5

17.44

66.01

1720

454.5

4

40

4.500

0.24

4.03

10 8/32

260.1

15 28/32

402.9

12.18

46.09

2464

651.0

80

4.500

0.34

3.83

10 5/32

258.1

15 25/32

400.9

13.48

51.03

2225

587.9

5

40

5.563

0.26

5.05

10 4/32

257.0

15 24/32

399.7

7.748

29.33

3872

1023

80

5.563

0.38

4.81

10

254.6

15 21/32

397.4

8.519

32.25

3521

930.4

6

40

6.625

0.28

6.07

10

253.8

15 20/32

396.6

5.365

20.31

5591

1477

80

6.625

0.43

5.76

9 28/32

250.8

15 16/32

393.5

5.946

22.51

5045

1333

8

40

8.625

0.32

7.98

9 24/32

247.9

15 12/32

390.7

3.098

11.73

9683

2558

80

8.625

0.50

7.63

9 20/32

244.3

15 8/32

387.0

3.394

12.85

8838

2335

10

40

10.75

0.37

10.0

9 16/32

241.6

15 4/32

384.4

1.966

7.440

15262

4032

80

10.75

0.59

9.56

9 11/32

237.00 14 30/32

379.8

2.158

8.170

13899

3672

12

STD

12.75

0.38

12.0

9 10/32

236.4

14 30/32

379.1

1.371

5.187

21890

5783

XHY

12.75

0.50

11.8

9 6/32

233.8

14 26/32

376.6

1.429

5.410

20987

5545

14

30

14.00

0.38

13.3

9 6/32

233.2

14 26/32

375.9

1.124

4.255

26688

7051

XHY

14.00

0.50

13.0

9 3/32

230.6

14 22/32

373.4

1.168

4.420

25690

6787

16

30

16.00

0.38

15.3

9

228.1

14 19/32

370.8

0.849

3.212

35352

9340

40/XHY

16.00

0.50

15.0

8 28/32

225.6

14 16/32

368.3

0.877

3.320

34202

9036

18

STD

18.00

0.38

17.3

8 25/32

223.0

14 13/32

365.8

0.663

2.510

45233

11950

XHY

18.00

0.50

17.0

8 22/32

220.5

14 10/32

363.2

0.683

2.585

43931

11610

20

20/STD

20.00

0.38

19.3

8 19/32

217.9

14 6/32

360.7

0.533

2.016

56330

14880

30/XHY

20.00

0.50

19.0

8 16/32

215.39

14 3/32

358.1

0.547

2.069

54876

14500

22

20/STD

22.00

0.38

21.3

8 12/32

212.85

14

355.6

0.437

1.654

68643

18136

30/XHY

22.00

0.50

21.0

8 9/32

210.31 13 29/32

353.1

0.448

1.694

67037

17711

24

20/STD

24.00

0.38

23.3

8 6/32

207.77 13 26/32

350.5

0.365

1.382

82172

21710

XHY

24.00

0.50

23.0

8 3/32

205.23 13 22/32

348.0

0.373

1.412

80414

21246

 

The data in these tables is based on dimensions of metal pipe per ANSI 36.10 and ANSI 36.19.

Stainless steel and carbon steel pipe schedules have the same dimensions according to ANSI standards.

Contact the local Georg Fischer Signet distributor for assistance with pipe sizes and materials not listed.

Calibration Data


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12

Signet 2552 Metal Magmeter

Pipe Size (ANSI)

Schedule

OD (Inches)

W

ALL

 (Inches)

ID (Inches)

H Dim 

 

-2 V

ersion

H Dim mm

 

-3X V

ersion

K-Factor

 

Pulse/liter

K-Factor

 

Pulse/Gal

Factory set 20 mA

 (liter/min)

Factory set20 mA

 

(GPM)

Inch

mm

Inch

mm

26

STD

26

0.38

25.25

8

202.69 13 19/32 345.4

0.310

1.172

96917

25606

20/XHY

26

0.50

25.00

7 28/32 200.15 13 16/32 342.9

0.316

1.195

95008

25101

28

STD

28

0.38

27.25

7 25/32 197.61 13 13/32 340.4

0.266

1.006

112879

29823

20/XHY

28

0.50

27.00

7 22/32 195.07 13 10/32

337.8

0.271

1.025

110817

29278

30

STD

30

0.38

29.25

7 19/32

192.53

13 6/32

335.3

0.231

0.873

130056

34361

20/XHY

30

0.50

29.00

7 16/32

189.99

13 3/32

332.7

0.235

0.888

127842

33776

32

STD

32

0.38

31.25

7 12/32 187.45

13

330.2

0.202

0.765

148449

39220

20/XHY

32

0.50

31.00

7 9/32

184.91 12 29/32

327.7

0.205

0.777

146084

38595

34

STD

34

0.38

33.25

7 6/32

182.37

12 26/32

325.1

0.179

0.676

168059

44401

20/XHY

34

0.50

33.00

7 3/32

179.83

12 22/32 322.6

0.181

0.686

165541

43736

36

STD

36

0.38

35.25

7

177.29

12 19/32 320.0

0.159

0.601

188885

49903

20/XHY

36

0.50

35.00

6 28/32 174.75 12 16/32

317.5

0.161

0.610

186215

49198

38

STD

38

0.38

37.25

6 25/32

172.21

12 13/32 315.0

0.142

0.538

210926

55727

XHY

38

0.50

37.00

6 22/32 169.67 12 10/32 312.4

0.144

0.546

208105

54981

40

STD

40

0.38

39.25

6 19/32 167.13

12 6/32

309.9

0.128

0.485

234184

61872

XHY

40

0.50

39.00

6 16/32 164.59

12 3/32

307.3

0.130

0.491

231210

61086

42

STD

42

0.38

41.25

6 12/32 162.05

12

304.8

0.116

0.439

258658

68338

XHY

42

0.50

41.00

6 9/32

159.51

11 29/32 302.3

0.117

0.444

255532

67512

48

STD

48

0.38

47.25

5 25/32 146.81 11 13/32 289.6

0.088

0.335

339377

89664

XHY

48

0.50

47.00

5 22/32 144.27 10 26/32 274.32

0.089

0.338

335795

88717

54

STD

54.00

0.38

53.25

5 6/32

131.57

10 22/32

271.78

0.07

0.2634

431040

113881

XHY

54.00

0.50

53.00

5 3/32

129.03

10 6/32 259.08

0.06

0.2659

427002

112814

60

STD

60.00

0.38

59.25

4 19/32 116.33

10 3/32 256.54

0.06

0.2128

533648

140990

XHY

60.00

0.50

59.00

4 16/32

113.79

9 19/32 243.84

0.06

0.2146

529154

139802

66

STD

66.00

0.38

65.25

4

101.09

9 16/32 241.30

0.05

0.1754

647201

170991

XHY

66.00

0.50

65.00

3 29/32

98.55

9

228.60

0.05

0.1768

642251

169683

72

STD

72.00

0.38

71.25

3 13/32

85.85

8 29/32 226.06

0.04

0.1471

771699

203883

XHY

72.00

0.50

71.00

3 10/32

83.31

8 13/32 213.36

0.04

0.1482

766293

202455

78

STD

78.00

0.38

77.25

2 26/32

70.61

8 10/32 210.82

0.03

0.1252

907141

239667

XHY

78.00

0.50

77.00

2 22/32

68.07

7 26/32

198.12

0.03

0.1260

901280

238119

84

STD

84.00

0.38

83.25

2 6/32

55.37

7 22/32

195.58

0.03

0.1078

1053529

278343

XHY

84.00

0.50

83.00

2 3/32

52.83

7 6/32

182.88

0.03

0.1084

1047211

276674

90

STD

90.00

0.375

89.25

1 19/32

40.13

7 3/32

180.34

0.02

0.0938

1210862

319910

XHY

90.00

0.500

89.00

1 16/32

37.59

6 19/32 167.64

0.02

0.0943

1204087

318120

96

STD

96.00

0.375

95.25

1

24.89

6 16/32 165.10

0.02

0.0823

1379139

364369

XHY

96.00

0.500

95.00

29/32

22.35

6

152.40

0.02

0.0828

1371909

362459

102

STD

102.00

0.38

101.25

13/32

9.65

5 29/32 149.86

0.02

0.0729

1558362

411720

XHY

102.00

0.50

101.00

10/32

7.11

10/32

7.11

0.02

0.0732

1550676

409690

K-Factors and Full Scale Current Values for 3-2552-2x - x - xx and 3-2552-3x - x - xx Magmeters

The data in these tables is based on dimensions of metal pipe per ANSI 36.10 and ANSI 36.19.

Stainless steel and carbon steel pipe schedules have the same dimensions according to ANSI standards.

Contact the local Georg Fischer Signet distributor for assistance with pipe sizes and materials not listed.

Calibration Data


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13

Signet 2552 Metal Magmeter

Bi-Directional Flow

The 2552 magmeter is designed to measure bi-directional flow.

•  4 to 20 mA output models:

  May be scaled to span any 

flow range:

 

For example: "4 to 20 mA = -100 GPM to +100 GPM"

•  Frequency output models: 

 The 2552 will generate 

a frequency regardless of flow direction. Signet 

instrumentation cannot distinguish bi-directional flow from 

frequency inputs. 

•  Digital (S

3

L) output models

:  Reverse flow results in 0 

flow rate displayed on the 8900 Multi-Parameter Controller.

• 

The forward flow direction is indicated at the base of the 

sensor.  The arrow must point DOWNSTREAM.

FLOW→

    

 B

lu

 

     

R

ed

0252 Configuration Tool

 

No calibration is necessary to begin using the 2552. 

The application and performance settings are selected by the factory to meet the requirements of most applications.

The 2552 application and performance settings can be customized using the 3-0252 Configuration Tool.

The following parameters can be modified with the 3-0252 USB Setup tool and software. A Windows PC is required:

• 

4 to 20 mA span

: Factory setting is 0 to 5 m/s.

 

Can be customized to any range, including bi-directional flow ranges, ±10 m/s maximum.

• 

Noise Rejection Filter

: Factory set for 60 Hz.

 

Can be changed to 50 Hz.

• 

Low Flow Cutoff

: Factory setting is 0.05 m/s.

 

Can be increased to meet specific application requirements.

• 

Averaging Time

:Factory setting is 14 seconds

 

Can be customized from 0.1 seconds to 100 seconds

• 

Sensitivity

: Factory setting is 25% of full scale

 

Can be customized to any % of full scale

The

 MONITOR/VERIFY SENSOR 

function in the Signet 

3-0252 Setup Tool software is very useful as a system 

troubleshooting tool.

MONITOR/VERIFY SENSOR

Technical Support Information


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14

Signet 2552 Metal Magmeter

Troubleshooting Table

Troubleshooting with the RED and BLUE lights

The 2552 uses two colored LEDs to indicate the status of the measurement. They are located at the top of the magmeter, recessed 

inside the threaded steel housing.  Look down the outer housing to see them.

No Lights: 

 

The power is off or the sensor is not connected

Solid Blue: 

 

The power is on but there is no flow in the pipe.

Blinking Blue: 

 

Normal operation, blink rate is proportional to the flow rate.

Alternating Red-Blue: 

Empty pipe indication (electrodes are not wet.)

Blinking Red: 

 

System errors (Generally indicates electrical noise interference)

Solid Red: 

 

Instrument error (Generally indicates defective electronics component) 

The lights are for troubleshooting guidance only and are not absolute fault indicators.

FLOW→

    

 B

lu

 

     

R

ed

There are no user-serviceable components in the Magmeter.

• 

If the fluid contains deposits and solids that may coat the electrodes, a regular cleaning schedule is recommended.

• 

Do not use abrasive materials on the metal electrodes.  Clean with soft cloth and mild detergent only.

• 

Use a cotton swab and mild detergent to remove deposits on the metal electrodes at the tip of the sensor.

• 

If the sensor nut will not turn smoothly, a light lubricant can be applied to the threads.

• 

Re-apply Anti-Seize Lubricant for stainless steel ("Permatex" brand or equivalent) to the acme threads whenever servicing and 

before retracting sensor.

Troubleshooting

Symptom

Possible Cause

Possible Solution

• 

Frequency, Digital or Current

 

output is erratic.

• 

Magmeter installed too close to 

upstream obstruction.

• 

Magmeter electrodes are coated.

• 

Magmeter electrodes exposed to air 

bubbles/pockets.

• 

Electrical noise is interfering with the 

measurement.

• 

New sensor, metal surface not 

properly conditioned.

• 

Move the Magmeter upstream at least 

10 pipe diameters from obstruction.

• 

Clean the electrodes with soft cloth. Do 

not use abrasives.

• 

Eliminate air bubbles in the pipe.

• 

Remove the Magmeter and reinstall 

with the flow direction arrow on the 

sensor body pointed DOWNSTREAM.

• 

Modify grounding as required to protect 

the Magmeter from interference.

• 

Soak sensor overnight in fluid.

• 

Output is not 0 when flow is 

stopped.

• 

Electrodes not adequately 

conditioned.

• 

Flow rate is less than Low flow cutoff 

value.

• 

Electrical noise is interfering with the 

measurement.

• 

Defective Magmeter

• 

Soak sensor overnight in fluid.

• 

Configure pipe so electrodes are 

always in fluid.

• 

Modify grounding as required to protect 

the Magmeter from interference.

• 

Adjust low flow cutoff higher.

• 

Return to factory for service.

• 

4 to 20 mA output is incorrect.

• 

4 to 20 mA is not scaled same as 

Loop device.

• 

Loop device is not scaled same as 

Magmeter.

• 

Defective Magmeter

• 

Use 3-0252 Span and Setup tool to set 

output range.

• 

Respan Loop device to match 

Magmeter.

• 

Return to factory for service.

• 

Frequency output is inoperative

• 

Digital (S

3

L) output is inoperative.

• 

Loop output is inoperative.

• 

2552 is wrong model.

• 

Wiring is not correct.

• 

Frequency input to other 

manufacturer's flow instrument does 

not have pull-up resistor.

• 

Freq/S

3

L model is 3-2552-XX-11.

• 

Blue wire must be grounded for freq 

out, open for S

3

L out.

• 

4 to 20 mA model is 3-2552-XX-12.

• 

Check wiring, make corrections.

• 

Install 10k

 resistor.

• 

Output is 22.1 mA.

• 

Conductivity is less than 20 µS/cm.

• 

Electrical noise

• 

Electronic component failure.

• 

Unsuitable application for Magmeter.

• 

Check grounding, eliminate noise 

source 

• 

Return to factory for service.

Maintenance


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15

Signet 2552 Metal Magmeter

The 2552 Magmeter can be installed into a variety of pipe sizes.  Follow the steps below to en

-

sure that you choose the right sensor for your application.

Step 1: Determine how the sensor will be installed

• 

For retrofit installations, the ball valve must 

be at least a 1¼ in. (or 1½ in. for 2552-3) 

full port valve. The stack height, or “A” 

dimension (see Fig. 2), is the overall height 

from the top of the pipe to the top of the ball 

valve, or the top of the highest point of the 

stack before the sensor is connected.

B.  For Hot-Tap installations

:

The stack height of the ball valve, nipple weldolet (threadolet) and pipe adapters should be deter

-

mined before the sensor is purchased.

• 

For new installations, Signet recommends 

a 1¼ in. or 1½ in. full port ball valve, a 

short nipple and a weldolet (threadolet). 

The stack height or “A” dimension (see 

Fig. 2) is the overall height from the top of 

the pipe to the top of the ball valve.

A.  For standard (non Hot-Tap) installations:

The height of the weldolet (threadolet) and pipe adapter(s) should be determined before the sen

-

sor is purchased.

• 

For retrofit installations, the stack height, 

or “A” dimension (see Fig. 1), is the 

overall height from the top of the pipe to 

the highest point of the stack before the 

sensor is connected.

• 

For new installations, Signet recommends 

a weldolet (threadolet) and an adapter 

to accommodate the 1¼ in. (or 1½ in. for 

2552-3) sensor process threads. The stack 

height, or “A” dimension (see Fig. 1), is the 

overall height from the top of the pipe to the 

highest point of the stack.

Step 2: Determine how the sensor will be installed

Once the “A” dimension is determined, go to the sensor selection table and find your “A” dimension 

on the left column. Next, find the appropriate pipe size at the top of the chart. To determine the cor

-

rect sensor size locate where the pipe size column meets the max “A” dimension row.

“A”  

Dimension

Weldolet 

or Saddle

Sensor

Housing

Sensor

Fig. 1

Standard installation with “A” 

dimension using a weldolet 

(threadolet)

“A”

Dimension

 

Weldolet

Nipple

Ball

Valve

Pipe

Wall

Sensor

Housing

Sensor

Fig. 2

Hot-Tap installation with “A” 

dimension using a ball valve, 

short nipple and weldolet 

(threadolet)

Step 3: Refer to Ordering Information to select corresponding part numbers

Legend:

 

2:  Use 3-2552-2, 

  max. insertion =

  236 mm (9.3 in.)

3:  Use 3-2552-3,

  max. insertion = 

  368 mm (14.8 in)

inches

2

2.

5

3 to 31/2"

4

5

6 to 8"

10

12 to 14

"

16

18

20

22

24

26 to 28"

30 to 32"

34

36 to 38"

40 to 42"

48

54

60

66

72

78

84

102

DN

50

65

80 to 90

10

0

12

5

150 to 20

0

250

300 to 35

0

40

0

45

0

500

550

600

650 to 70

0

750 to 800

850

900 to 950

1000 to 1100

1200

1400

1500

1700

1800

2000

2100

2550

mm

inches

50.8

2

2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 3 3 3 3 3 3 3

63.5

2.5

2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 3 3 3 3 3 3 3

76.2

3

2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 3 3 3 3 3 3 3

88.9

3.5

2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 3 3 3 3 3 3 3

101.6

4

2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 3 3 3 3 3 3 3

114.3

4.5

2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 3 3 3 3 3 3 3

127

5

2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 3 3 3 3 3 3 3 3

139.7

5.5

2 2 2 2 2 2 2 2 2 2 2 2 3 2 2 3 3 3 3 3 3 3 3 3 3

152.4

6

2 2 2 2 2 2 2 2 2 2 2 3 3 2 3 3 3 3 3 3 3 3 3 3 3

165.1

6.5

2 2 2 2 2 2 2 2 2 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3

177.8

7

2 2 2 2 2 2 2 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3

190.5

7.5

2 2 2 2 2 2 2 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3

228.6

9

2 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3

241.3

9.5

3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3

254

10

3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3

266.7

10.5

3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3

279.4

11

3 3 3 3 3 3 3 3 3 3 3 3

3 3 3

292.1

11.5

3 3 3 3 3 3 3 3 3 3 3

3

304.8

12

3 3 3 3 3 3 3 3 3 3

317.5

12.5

3 3 3 3 3 3 3 3

330.2

13

3 3 3 3 3 3 3

342.9

13.5

3 3 3 3 3 3

355.6

14

3 3 3 3 3

375.9

14.8

3 3

381

15

Pipe Size

Max. "A" Di

m

This chart is based on the thickest commonly available pipe.

Sensor Selection Guide


background image

*  Customer must determine stack height (ball valve, nipple, weldolet, etc.). Refer to Sensor Selection on previous page to determine “A” dimension.

**   1¼ inch process connection is the standard thread size on the 2552-2.  For the 2552-3, the 1½ inch process connection is standard and the 1¼ 

inch is available as a special order.  

Ordering Information

Model 2552 Metal Magmeter
Mfr. Part No.

Code

Description

Sensor insertion depth 9.3 inches*, 1¼ inch NPT Process Connection Threads**

3-2552-21-A-11

159 001 513 Fixed Cable, 7.6m (25 ft); no connector, Frequency or Digital (S

3

L); for use with any Signet 

Flow Instrument or the 8900 Multi-Parameter Controller

3-2552-21-A-12

159 001 514 Fixed Cable, 7.6m (25 ft); no connector, 4 to 20 mA output

3-2552-21-B-11

159 001 515 Watertight sensor connector (cable sold separately), 7.6m (25 ft); Frequency or Digital (S

3

L); 

for use with any Signet Flow Instrument or the 8900 Multi-Parameter Controller

3-2552-21-B-12

159 001 516 Watertight sensor connector (cable sold separately),  4 to 20 mA output

Sensor insertion depth 9.3 inches*, 1¼ inch ISO Process Connection Threads** 

3-2552-22-A-11

159 001 517 Fixed Cable, 7.6m (25 ft); no connector, Frequency or Digital (S

3

L); for use with any Signet 

Flow Instrument or the 8900 Multi-Parameter Controller

3-2552-22-A-12

159 001 518 Fixed Cable, 7.6m (25 ft); no connector, 4 to 20 mA output

3-2552-22-B-11

159 001 519 Watertight sensor connector (cable sold separately),  Frequency or Digital (S

3

L); for use with 

any Signet Flow Instrument or the 8900 Multi-Parameter Controller

3-2552-22-B-12

159 001 520 Watertight sensor connector (cable sold separately),  4 to 20 mA output

 Sensor insertion depth = 14.8 inches*,  1½ inch (2552-3 only) NPT Process Connection Threads** 

3-2552-33-A-11

159 001 521 Fixed Cable, 7.6m (25 ft); no connector, Frequency or Digital (S

3

L); for use with any Signet 

Flow Instrument or the 8900 Multi-Parameter Controller

3-2552-33-A-12

159 001 525 Fixed Cable, 7.6m (25 ft); no connector, 4 to 20 mA output

3-2552-33-B-11

159 001 523 Watertight sensor connector (cable sold separately), Frequency or Digital (S

3

L); for use with 

any Signet Flow Instrument or the 8900 Multi-Parameter Controller

3-2552-33-B-12

159 001 527 Watertight sensor connector (cable sold separately), 4 to 20 mA output

Sensor insertion depth = 14.8 inches*, 1½ inch (2552-3 only) ISO Process Connection Threads**

3-2552-34-A-11

159 001 522 Fixed Cable, 7.6m (25 ft); no connector, Frequency or Digital (S

3

L); for use with any Signet 

Flow Instrument or the 8900 Multi-Parameter Controller

3-2552-34-A-12

159 001 526 Fixed Cable, 7.6m (25 ft); no connector, 4 to 20 mA output

3-2552-34-B-11

159 001 524 Watertight sensor connector (cable sold separately), Frequency or Digital (S

3

L); for use with 

any Signet Flow Instrument or the 8900 Multi-Parameter Controller

3-2552-34-B-12

159 001 528 Watertight sensor connector (cable sold separately), 4 to 20 mA output

Accessories and Replacement Parts

2120-1512

159 001 425 1½ x 1¼ inch NPT adapter for retrofitting 2540 installation to 2552 - 316 stainless steel

2120-2012

159 001 426 2 x 1¼ inch NPT adapter for retrofitting 2550 installation to 2552 - 316 stainless steel

3-2552.392

159 001 530 1¼ inch NPT full port stainless steel ball valve and nipple kit

3-2552.393

159 001 531 1¼ inch NPT full port brass ball valve & nipple kit

3-2552.394

159 001 532 1½ inch NPT conduit adapter, aluminum

4301-2125

159 001 533 1¼ inch NPT full port ball valve - brass

4301-3125

159 001 387 1¼ inch NPT full port ball valve - stainless steel

3-0252

159 001 808 Configuration tool

5541-4184

159 001 388 4-conductor, 22 AWG, water-tight connector, 4m (13 ft)

5541-4186

159 001 389 4-conductor, 22 AWG, water-tight connector, 6m (19.5 ft)

special order

special order

4-conductor, 22 AWG, water-tight connector, cable length in 25 ft increments

special order

special order

1¼ in. NPT or ISO Process Connection threads to replace 1½ in. NPT or ISO threads

Georg Fischer Signet LLC, 3401 Aerojet Avenue, El Monte, CA  91731-2882  U.S.A.  •  Tel. (626) 571-2770  •  Fax (626) 573-2057

For Worldwide Sales and Service, visit our website:  www.gfsignet.com  •  Or call (in the U.S.):  (800) 854-4090

For the most up-to date information, please refer to our website at www.gfsignet.com

3-2552.090     Rev. 6   10/18   English 

© Georg Fischer Signet LLC  2018