Georg Fischer Signet 2552 Manual - User Manual

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Signet 2552 Metal Magmeter

*3-2552.090*

3-2552.090 Rev

07/10

English

SAFETY INSTRUCTIONS

1.  Depressurize and vent systems without Hot-tap valve prior to installation or removal.
2. Confi rm chemical compatibility before use.
3.  Do not exceed maximum temperature/pressure specifi cations.
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.

2. Specifi cations

1. Description

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 fi t pipes
from DN50 to DN2550 (2 to 102 inches). Three sensor lengths allow maximum fl exibility to accommodate a variety of hardware
confi gurations, including ball valves for hot-tap installations.
When equipped with the frequency output, the 2552 is compatible with any Signet fl ow instrument, while the S

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 3-0250 USB to Digital (S

L) Confi guration/Diagnostic Tool is available to customize every performance feature in the 2552

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

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 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 fl uid is water at ambient temperature, the sensor
is inserted at the correct depth and there is a fully developed
fl ow profi le which is in compliance with ISO 7145-1982 (BS
1042 section 2.2))

Minimum Conductivity: 20

S/cm

Wetted Materials
•

316L Stainless Steel body and electrodes

• PVDF

Insulator

• 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

L): 5 to 6.5 VDC, 15 mA maximum

•

Reverse polarity and short circuit protected

Cable Options
•

Fixed 7.6 m (25 ft) cable

•

Detachable water tight sensor cable with Turck

connector

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

Custom lengths available, contact Georg Fischer Signet

Electrical
Current Output (4 to 20 mA)
•

Programmable and reversible

Factory Range: 4 to 20 mA = 0 to 5 m/s

• Loop

Accuracy:

A max. error (@ 25 °C @ 24 VDC)

•

Temp. drift: ±1

A per °C max.

•

Power supply rejection: ±1

A per V

•

Isolation: Low voltage < 48 VAC/DC from electrodes and
auxiliary power

•

Maximum cable: 300 m (1000 ft)

•

Max. Loop Resistance: 300

•

Error condition: 22.1 mA

Frequency output
•

Compatible with Signet 5075, 5500, 5600, 8550 and 8900

•

Max. Pull-up Voltage: 30 VDC

•

Short Circuit Protected:

≤

30 V @ 0

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

L) Output

•

Compatible with Signet 8900

•

Serial ASCII, TTL level 9600 bps

•

Maximum cable: Application dependent (See 8900 manual)

Standards and Approvals
• CE
•

U.S. Patent No.: 7,055,396 BI

•

NEMA 4 (IP65) (fi xed cable models)

•

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

Signet recommends maximum 3 m. (10 ft) submersion depth
for maximum 10 days continuous submersion.

•

Manufactured under ISO 9001 and ISO 14001

China RoHS (Go to www.gfsignet.com for details)

2552 Magmeter

2.1 Temperature and Pressure Specifi cations

Max. Temperature/Pressure 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)

Maximum Operating Pressure:

20.7 bar @ 25 °C (300 psi @ 77 °F)

Hot-Tap Installation Requirements
•

Maximum Installation Pressure: 20.7 bar (300 psi)

•

Maximum Installation Temp.: 40 °C (104 °F)

Do not use hot-tap installation where temperatures will

exceed 40 °C or if hazardous liquids are present.

Media Temperature

Operating Pressure

100

158

185

212

-10

-20

30 40 50 60 70 80 90

59 77

°F

°C

0.9

150

175

300

200

225

2.6

100

125

250

275

95 113 131

20.6

11.2

7.8

9.5

16.4

bar

psi

Safe Media Pressure
and
Temperature Range

14.7

18.1

12.9

4.3

6.0

19.8

2552 Magmeter
Temperature-Pressure Operating Range

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

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

2.3 2552 Magmeter Dimensions

2.2 2552 Magmeter Overview

2552 Magmeter

3. Selecting a Location

The 2552 requires a fully developed turbulent fl ow profi le 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 fl ow going UPHILL is the fi rst 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

S, magmeters should be allowed to soak in a full pipe for

24 hours before operation.

3.1 Vertical Installations Recommended

Locating the sensor where the fl ow is upward protects the sensor from exposure to air bubbles and may offset upstream turbulence
caused by pipe conditions and other hardware.

+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+

O.K.

+GF

O.K.

+GF+

O.K.

20 x ID

+GF+

+GF

3.2 Horizontal

Installations

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.

Located the magmeter in a "trap" to prevent air bubbles and to
keep the electrodes wetted for best performance.

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.

2552 Magmeter

4. General Installation and Grounding Tips

4.1 Sensor

conditioning

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

S/cm.

4.2 Grounding

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

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.

Grounding rings on plastic pipe

(Installed between flanges)

(10 cm to 1.3 m)

4 in. to 50 in.

FLOW →

→

Blue

Black

Brown

White

Shield

Flow 6.25 GPM

Total 1234567.8>

ENTER

Signet Flow
Transmitter

8550

2552 Magmeter

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.)

H Dimension

10% of
inside diameter

Wall Thickness

Hardware
Stack Height

4.3 Preparing for Installation

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.

4.4 H-Dimension

The H-dimension is the distance from the TOP OF THE PIPE to the BOTTOM OF THE BRASS ROD.
The tables on pages 8–11 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 8–11, 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

Hardware stack height is important

The H-dimension represents the total height
avaliable for the installation hardware.

If there is insuffi cient clearance to accommodate
the hardware, select a longer 2552 Magmeter or
modify the hardware to reduce the stack height.

2552 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 fi tting. This will prevent the cable
from becoming twisted around the sensor while the process
connector is tightened into the pipe.

Loosen the set screw in the process connector nut.

d. Rotate the Acme threaded outer housing until the fl ow arrow is

aligned in the proper direction.

e. Secure the set screw suffi ciently 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 fi tting (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)

•

1¼ in. or 1½ in. ball valve (for hot tap installations)

•

32 mm (1¼ in.) or 40 mm (1½ in.) diameter drill

•

Pipe thread sealant suitable for application

• Pipe

wrench

•  32 mm (1¼ in.) pipe nipple
•  32 mm (1¼ in.) ball valve
•  32 mm (1¼ in.) drill bit

Supplied with 2552 Magmeter:

• Ruler
•

Brass alignment rod

•

H-dimension value for your pipe (See pages 6–9)

• Hex

wrench

•

2 clamp rings

• Grounding

screw

5. Magmeter

Installation

The following items are required to properly install the Magmeter:

1. Determine the H-dimension for the pipe.

•

The tables on pages 8–11 list the H-dimension metal pipe per ANSI 36.10 and ANSI 36.19.

•

Use the procedure on page 5 to determine the H-dimension for other types of pipe.

2. Prepare the pipe:

Cut a 32 mm (1¼ in.) opening in the pipe.

b. Install a 1¼ in. (for 2552-1, 2552-2) or 1½ in. (for 2552-3) outlet onto the pipe.

This fi tting 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 qualifi ed personnel.

FLOW →

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.

Wear gloves to grip the outer sensor housing.

2552 Magmeter

Pipe Top View

Align Magmeter with pipe ±1°

FLOW →

FLOW →

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. 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. 5).

•

Installation tip: If necessary, apply a suitable lubricant to
the Acme threads to facilitate smooth operation.

5. Secure the Magmeter in position

•

Secure the height adjustment by installing the two pipe clamps
above and below the sensor adjustment hub.

• Spread the clamp apart to wrap it around the outer

housing.

• Place one clamp immediately above and one clamp

immediately below the magmeter adjustment hub.

• Squeeze the clamp together until it is fi rmly locked around

the housing.

Set Screw

Set Screw
Wrench

FLOW →

The distance from the
OUTSIDE of the pipe
to the bottom of the
alignment rod must be
equal to the H-dimension

Loosen the locking set screw and rotate the outer housing
to align the brass rod with the centerline if the pipe.

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

alignment, tighten the locking set screw fi rmly.

CAUTION: Overtightening the set screw may damage the
hex key.

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.

•

Remove the steel clamp from the top of the assembly.

•

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.

•

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

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

•  Remove the magmeter from the top of the valve.
•  Loosen the locking set screw on the process connector nut.
•  Use one pipe wrench to hold the valve in place while turning the process connector

nut with a second wrench.

• 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

This lock/tag ma

only be r

emoved b

Name ___________

Dept. ____________

Expected dat

e for

completion:

_________

2552 Magmeter

•

The 2552 outputs an open collector frequency signal that
can be connected to any powered Signet fl ow meter. (Models
5075, 5500, 5600, 8550, 8900.)

•

DC power is provided to the 2552 Magmeter by all Signet
fl ow instruments. No additional power is required.

•

If connecting the 2552 Magmeter to a fl ow 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 (Red) wires.

•

ALWAYS connect AUX power on the 8550 to provide power
for the 2552 output signal.

6.1 Wiring: Frequency output (Compatible with all POWERED Signet Flow instruments.)

6.2 Wiring: 8900 Multi-Parameter Controller

6. Wiring the 3-2552-XX-11 with Frequency or Digital (S

L) output

3-8900.621C

I/O Module 3-8900.401-X

+5VDC (Black)

Freq. Input (Red)

GND (Shield)

+5VDC (Black)

Freq. Input 2 (Red)

S L (Red)

GND (White/Shield)

+5VDC (Black)

S L (Red)

GND (White/Shield)

Analog Output 1

Analog Output 2

(if applicable)

Frequency

Input

Frequency

Input 2

S3L

Input

S3L

Input

White

Blue

Brown

Black

Shield

8900 S

L Wiring

3-8900.621C

I/O Module 3-8900.401-X

+5VDC (Black)

Freq. Input (Red)

GND (Shield)

+5VDC (Black)

Freq. Input 2 (Red)

S L (Red)

Frequency

Input

Frequency

Input 2

S3L

Input

White

Blue

Brown

Black

8900 Frequency Wiring

Shield

•

The 2552 receives 5 VDC power from the 8900.
No additional power is required.

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

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. 1)

The maximum loop resistance the Magmeter can
accomodate is 300

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.).

2552 Magmeter

4 to 20 mA Loop

monitor

(Maximum 300 Ω)

24 VDC ± 10%

Brown

Blue

White

Loop - (Ground)

Black

Loop + (24 VDC)

NOTE:
The maximum cable length from the 2552 to the 8900 depends on the 8900
confi guration. Refer to the 8900 manual for complete information.

8550-1 Flow Transmitter

White

Blue

Brown

Black

Sensr IN
(RED)

Sensr V+
(BLACK)

Sensr Gnd
(SHIELD)

Shield

White

Blue

Brown

Black

Shield

Freq. IN

Sen. Pwr

Freq. IN

Iso. Gnd

Signet 5500

5-24 VDC

Sensor Ground

Frequency Out

10 KΩ

Install a pull-up resistor when
connecting the 2552 Magmeter
to other manufacturer's flowmeters.

White

Blue

Brown

Black

Non-Signet Instrument

Shield

2552 Magmeter

7. Calibration

Data

7.1 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)

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

(GPM)

Inch

2.375

0.15

2.07

10 16/32

267.0

16 5/32

409.9

46.19

174.83

649.5

171.6

2.375

0.22

1.94

10 15/32

265.9

16 3/32

408.6

52.49

198.68

571.5

151.0

2½

2.875

0.20

2.47

10 14/32

264.9

407.7

32.37

122.54

926.7

244.8

2.875

0.28

2.32

10 12/32

263.4

406.2

36.57

138.42

820.3

216.7

3.500

0.22

3.07

10 12/32

263.1

15 31/32

405.8

20.97

79.36

1431

378.0

3.500

0.30

2.90

10 9/32

261.4

15 29/32

404.1

23.47

88.82

1278

337.8

3½

4.000

0.23

3.55

10 10/32

261.6

15 29/32

404.4

15.68

59.34

1914

505.6

4.000

0.32

3.36

10 8/32

259.7

15 27/32

402.5

17.44

66.01

1720

454.5

4.500

0.24

4.03

10 8/32

260.1

15 28/32

402.9

12.18

46.09

2464

651.0

4.500

0.34

3.83

10 5/32

258.1

15 25/32

400.9

13.48

51.03

2225

587.9

5.563

0.26

5.05

10 4/32

257.0

15 24/32

399.7

7.748

29.33

3872

1023

5.563

0.38

4.81

254.6

15 21/32

397.4

8.519

32.25

3521

930.4

6.625

0.28

6.07

253.8

15 20/32

396.6

5.365

20.31

5591

1477

6.625

0.43

5.76

9 28/32

250.8

15 16/32

393.5

5.946

22.51

5045

1333

8.625

0.32

7.98

9 24/32

247.9

15 12/32

390.7

3.098

11.73

9683

2558

8.625

0.50

7.63

9 20/32

244.3

15 8/32

387.0

3.394

12.85

8838

2335

10.75

0.37

10.0

9 16/32

241.6

15 4/32

384.4

1.966

7.440

15262

4032

10.75

0.59

9.56

9 11/32

237.00

14 30/32

379.8

2.158

8.170

13899

3672

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

14.00

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

16.00

0.38

15.3

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

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/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

20/STD

22.00

0.38

21.3

8 12/32

212.85

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

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.

2552 Magmeter

Pipe Size (ANSI)

Schedule

OD (Inches)

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

Inch

STD

0.38

25.25

202.69

13 19/32

345.4

0.310

1.172

96917

25606

20/XHY

0.50

25.00

7 28/32

200.15

13 16/32

342.9

0.316

1.195

95008

25101

STD

0.38

27.25

7 25/32

197.61

13 13/32

340.4

0.266

1.006

112879

29823

20/XHY

0.50

27.00

7 22/32

195.07

13 10/32

337.8

0.271

1.025

110817

29278

STD

0.38

29.25

7 19/32

192.53

13 6/32

335.3

0.231

0.873

130056

34361

20/XHY

0.50

29.00

7 16/32

189.99

13 3/32

332.7

0.235

0.888

127842

33776

STD

0.38

31.25

7 12/32

187.45

330.2

0.202

0.765

148449

39220

20/XHY

0.50

31.00

7 9/32

184.91

12 29/32

327.7

0.205

0.777

146084

38595

STD

0.38

33.25

7 6/32

182.37

12 26/32

325.1

0.179

0.676

168059

44401

20/XHY

0.50

33.00

7 3/32

179.83

12 22/32

322.6

0.181

0.686

165541

43736

STD

0.38

35.25

177.29

12 19/32

320.0

0.159

0.601

188885

49903

20/XHY

0.50

35.00

6 28/32

174.75

12 16/32

317.5

0.161

0.610

186215

49198

STD

0.38

37.25

6 25/32

172.21

12 13/32

315.0

0.142

0.538

210926

55727

XHY

0.50

37.00

6 22/32

169.67

12 10/32

312.4

0.144

0.546

208105

54981

STD

0.38

39.25

6 19/32

167.13

12 6/32

309.9

0.128

0.485

234184

61872

XHY

0.50

39.00

6 16/32

164.59

12 3/32

307.3

0.130

0.491

231210

61086

STD

0.38

41.25

6 12/32

162.05

304.8

0.116

0.439

258658

68338

XHY

0.50

41.00

6 9/32

159.51

11 29/32

302.3

0.117

0.444

255532

67512

STD

0.38

47.25

5 25/32

146.81

11 13/32

289.6

0.088

0.335

339377

89664

XHY

0.50

47.00

5 22/32

144.27

10 26/32

274.32

0.089

0.338

335795

88717

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

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

STD

66.00

0.38

65.25

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

228.60

0.05

0.1768

642251

169683

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

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

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

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

STD

96.00

0.375

95.25

24.89

6 16/32

165.10

0.02

0.0823

1379139

364369

XHY

96.00

0.500

95.00

29/32

22.35

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

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

2552 Magmeter

8.1 Bi-Directional

Flow

The 2552 magmeter is designed to measure bi-directional fl ow.

•

4 to 20 mA output models:

May be scaled to span any

fl ow range:

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

•

Frequency output models:

The 2552 will generate

a frequency regardless of fl ow direction. Signet
instrumentation cannot distinguish bi-directional fl ow from
frequency inputs.

• Digital

L) output models

: Reverse fl ow results in 0

fl ow rate displayed on the 8900 Multi-Parameter Controller.

• The

forward

fl ow direction is indicated at the base of the

sensor. The arrow must point DOWNSTREAM.

FLOW→

8.2 USB to Digital (S

L) Confi guration/Diagnostic 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 3-0250 USB to Digital (S

L) Confi guration/

Diagnostic Tool.

The following parameters can be modifi ed with the 3-0250 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 fl ow 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 specifi c 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 3-0250

Setup Tool software is very useful as a system troubleshooting
tool.

8.2.1 MONITOR/VERIFY

SENSOR

8. Technical Support Information

2552 Magmeter

•

Conductivity is less than 20

S/cm.

• Electrical

noise

•

Electronic component failure.

•

4 to 20 mA is not scaled same as
Loop device.

•

Loop device is not scaled same as
Magmeter.

• Defective

Magmeter

•

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.

•

Output is not 0 when fl ow is stopped.

•

Frequency, Digital or Current

output is erratic.

•

Output is 22.1 mA.

•

Electrodes not adequately conditioned.

•

Flow rate is less than Low fl ow cutoff
value.

•

Electrical noise is interfering with the
measurement.

• Defective

Magmeter

Symptom

Possible Cause

Possible Solution

•

Frequency output is inoperative

• Digital

L) output is inoperative.

•

Loop output is inoperative.

•

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 fl ow direction arrow on the
sensor body pointed DOWNSTREAM.

•

Modify grounding as required
to protect the Magmeter from
interference.

•

Soak sensor overnight in fl uid.

8.4 Troubleshooting

Table

•

Soak sensor overnight in fl uid.

• Confi gure pipe so electrodes are

always in fl uid.

•

Modify grounding as required
to protect the Magmeter from
interference.

• Adjust

low

fl ow cutoff higher.

•

Return to factory for service.

•

Use 3-0250 Span and Setup tool to
set output range.

•

Respan Loop device to match
Magmeter.

•

Return to factory for service.

•

2552 is wrong model.

•

Wiring is not correct.

•

Frequency input to other
manufacturer's fl ow instrument does
not have pull-up resistor.

• Freq/S

L model is 3-2552-XX-11.

•

Blue wire must be grounded for freq
out, open for S

L out.

•

4 to 20 mA model is 3-2552-XX-12.

•

Check wiring, make corrections.

• Install

10k

resistor.

•

Unsuitable application for Magmeter.

•

Check grounding, eliminate noise
source

•

Return to factory for service.

•

4 to 20 mA output is incorrect.

8.3 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 fl ow in the pipe.

Blinking Blue:

Normal operation, blink rate is proportional to the fl ow 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.

Environmental Recommendations:

•

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.

8.5 Maintenance

There are no user-serviceable components in the Magmeter.
• If

the

fl uid 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.

2552 Magmeter

Sensor Selection Guide

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

to ensure 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 determined 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 sensor 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 correct 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:

: Use 3-2552-2,

max. insertion =

236 mm (9.3 in.)

: Use 3-2552-3

max. insertion =

368 mm (14.8 in)

ches

3 to 31/

6 to 8"

12 to 14"

26 to 28"

30 to 32"

36 to 38"

40 to 42"

102

80 to 90

100

125

150 to 200

250

300 to 350

400

450

500

550

600

650 to 700

750 to 800

850

900 to 950

1000 to 1100

1200

1400

1500

1700

1800

2000

2100

2550

inches

50.8

63.5

2.5

76.2

88.9

3.5

101.6

114.3

4.5

127

139.7

5.5

152.4

165.1

6.5

177.8

190.5

7.5

228.6

241.3

9.5

254

266.7

10.5

279.4

292.1

11.5

304.8

317.5

12.5

330.2

342.9

13.5

355.6

375.9

14.8

381

Pipe Size

. "A

" D

This chart is based on the thickest commonly available pipe.

2552 Magmeter

Notes:

2552 Magmeter

Notes:

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.comw

3-2552.090 Rev. E 07/10 English

Ordering Information

Model 2552 Metal Magmeter Ordering Matrix

3-2552

Mounting Depth Options - Choose One*

-2

Sensor insertion depth = 9.3 inches*

-3

Sensor insertion depth = 14.8 inches*
Process Connection Options - Choose One

1¼ inch NPT Process Connection Threads**

1¼ inch ISO Process Connection Threads**

1½ inch

(2552-3 only) NPT Process Connection Threads**

1½ inch

(2552-3 only) ISO Process Connection Threads**

Cable and Connector Options - Choose One

-A

Fixed Cable, 7.6m (25 ft); no connector

-B

Watertight sensor connector; cable sold separately
Output options - Choose One

-11

Frequency or Digital (S

L); for use with any

Signet Flow Instrument or the 8900 Multi-

Parameter Controller

-12

4 to 20 mA output

3-2552

-2

-A

-12 Example Part Number

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: For the 2552-3

the 1½ inch process connection is standard and the 1¼ inch is available as a special
order.

Model 2552

Ordering Notes:

1) Sensor insertion depth

is the distance from the

bottom of the sensor

housing to the tip of the

sensor.

2) Hot-Tap

installations

require a 1¼ in. or 1½ in.

ball valve.

3) See Sensor Selection

Guide on previous page

to determine the sensor

length required.

Accessories and Replacement Parts

Application Tips:

•

Minimum process liquid

conductivity requirement

is 20

S/cm.

•

1½ inch and 2 inch

(2552-2 only) retrofit

adapters are available

for replacement

installations of Signet

2550 and 2540 sensors.

Mfr. Part No.

Code

Mfr. Part No.

Code

3-2552-21-A-11

159 001 513

3-2552-33-A-11

159 001 521

3-2552-21-A-12

159 001 514

3-2552-33-A-12

159 001 525

3-2552-21-B-11

159 001 515

3-2552-33-B-11

159 001 523

3-2552-21-B-12

159 001 516

3-2552-33-B-12

159 001 527

3-2552-22-A-11

159 001 517

3-2552-34-A-11

159 001 522

3-2552-22-A-12

159 001 518

3-2552-34-A-12

159 001 526

3-2552-22-B-11

159 001 519

3-2552-34-B-11

159 001 524

3-2552-22-B-12

159 001 520

3-2552-34-B-12

159 001 528

Mfr. Part No.

Code

Description

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

3-0250

159 001 538

USB to Digital (S

L) configuration/diagnostic 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

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