GF Signet 2551 Operating Instructions Manual - User Manual

Full Text Searchable PDF User Manual

*3-2552.090*

3-2551.090 Rev. P 04/16

Signet 2551 Blind Magmeter

English

Quick Start ..............................................................................................2
Warranty Information ...............................................................................2
Product Registration ................................................................................2
Safety Information ...................................................................................2
Chemical Compatibility ............................................................................2
Speci

cations ..........................................................................................3

Dimensions ..............................................................................................3
Installation: Pipe Fittings..........................................................................4
Selecting a Location ................................................................................4
Hardware Con

guration...........................................................................5

General Installation and Grounding Tips .................................................6
Wiring with 4 to 20 mA Loop ....................................................................6
Wiring with Frequency or Digital (S

L) Output .........................................7

Calibration and Software Con

guration ...................................................7

Calibration Data .......................................................................................8
Maintenance and Troubleshooting ........................................................10
Ordering Information.............................................................................. 11

Operating Instructions

Description

Table of Contents

The Signet 2551 Magmeter is an insertion-style magnetic

ow sensor. The patented

sensor design is available in a variety of corrosion-resistant materials to provide long-
term reliability and minimal maintenance costs. Wetted material combinations include
PP/316 SS, PVDF/Hastelloy-C and PVDF/Titanium. The 2551 installs quickly and
securely into a wide selection of

ttings to deliver accurate

ow measurement in

pipe sizes ranging from DN15 to DN900 (½ in. to 36 in.).

Signet 2551 Magmeters are available with a frequency output or Digital (S

L) output

for use with the Signet 9900-1BC Batch Controller, 8900 Multi-Parameter Controller
or 9900 Transmitter, or with a 4 to 20 mA output for a direct input to a PLC, SCADA or
telemetry system.

All 2551 Magmeters feature empty pipe detection and LED-assisted diagnostics.
The Signet 3-0252 Con

guration Tool set-up tool is available to customize every

performance feature in the 2551 to adapt it to the speci

c application requirements.

• English
• Deutsch
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• Italiano
• Português

2551 Blind Magmeter

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.

Hand Tighten Only

Overtightening may permanently damage product threads
and lead to failure of the retaining nut.

Do Not Use Tools

Use of tool(s) may damage product beyond repair and
potentially void product warranty.

The retaining nuts of Magmeters are not designed for
prolonged contact with aggressive substances. Strong acids,
caustic substances and solvents or their vapor may lead to
failure of the retaining nut, ejection of the sensor and loss
of the process

uid with possibly serious consequences,

such as damage to equipment and serious personal injury.
Retaining nuts that may have been in contact with such
substances, e.g. due to leakage or spilling, must be replaced.

100

110

120

130

140

150

160

170

180

1.4

2.1

2.8

3.4

4.1

4.8

5.5

6.2

6.9

7.6

8.3

9.0

9.7

10.3

11.0

11.7

12.4

(bar)

(psi)

-20

100

120

°F

°C

-4

104

140

176

212

248

Operating Temperature/Pressure

Dimensions

Refer to your local Georg Fischer Sales of

ce 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 of

ce 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

Chemical Compatibility

Warranty Information

Product Registration

Safety Information

94 mm
(3.7 in.)

79.25 mm
(3.12 in.)

-X0
-X1
-X2

Pipe Range:

1/2 to 4 in. -X0 = 58 mm (2.3 in.)
5 to 8 in.

-X1 = 91 mm (3.6 in.)

10 to 36 in. -X2 = 167 mm (6.6 in.)

X = Sensor Body P, T, or V

Depressurize and vent system prior to installation or removal.
Con

rm chemical compatibility before use.

Do not exceed maximum temperature/pressure speci

cations.

Wear safety goggles or face shield during installation/service.
Do not alter product construction.
Disconnect power before attempting any service or wiring.

2551 Blind Magmeter

Quick Start

This manual contains the general installation, wiring and
calibration data for the Signet 2551-XX-11 Magmeter with
Frequency or Digital (S

L) data output, and for the Signet

2551-XX-12 Magmeter with 4 to 20 mA output. The basic
steps are outlined on this page. See each referenced section
for detailed information.

Con

gure the Hardware

2551-XX-11 ONLY:

Position this Jumper to select

Digital (S

L) output or Frequency

output. Pg. 5.

Position the PIPE SIZE jumper

according to your pipe

size. Pg. 5.

Install the Magmeter

into the pipe.

Use Signet

installation

ttings ONLY. The installation

tting is critical

to Magmeter performance. Pg. 4.

Connect POWER and OUTPUT wiring.

Frequency out: Pg. 7.
Digital (S

L) out: Pg. 7.

4 to 20 mA out: Pg. 6.

GROUNDING

Without a good earth ground,
the Magmeter may not operate
ef

ciently. Pg. 6.

Route the wiring

out through the two cable ports. Use

appropriate hardware to secure the 2551 from moisture
intrusion. One Liquid Tight Connector is included. Pg. 5.

JP2

FREQUENCY OUT
SERIAL (S

L) OUT

2551-P0/T0/V0 ½ in. to 2½ in.

DN15 to DN65

3 in. to 4 in.

DN80 to DN100

2551-P1/T1/V1 5 in. to 6 in.

DN125 to DN150

8 in.

DN200

2551-P2/T2/V2 10 in. to 12 in.

DN250 to DN300

Pipe
Size

Jumper
Position

Sensor

Type

Connect output signals and power
to this 4-terminal block.

Speci

cations

General

Pipe size range ...............DN15 to DN 900 (0.5 in. to 36 in.)
Flow Range
Minimum .....................0.05 m/s (0.15 ft/s)
Maximum ....................10 m/s (33 ft/s)
Linearity ..........................± 1% reading plus 0.01m/s (0.033 ft/s)
Repeatability ...................± 0.5% of reading @ 25 °C (77 °F)
Min. Conductivity ............20

S/cm

Wetted Materials

Sensor body and Electrodes and Grounding ring

-P0, -P1, -P2 ...............Polypropylene and 316L SS
-T0, -T1, -T2 ................PVDF and Titanium
-V0, -V1,-V2 ................PVDF and Hastelloy-C
O-rings ........................ FPM (standard);

EPDM, FFPM (optional)

The user is responsible for determining the chemical
suitability of these materials for a speci

c application.

Electrical

Power Requirements
4 to 20 mA ......................21.6 to 26.4 VDC, 22.1 mA max.
Frequency.......................5 to 26.4 VDC, 15 mA max.
Digital (S

L) .....................5 to 6.5 VDC, 15 mA max.

Reverse polarity and short circuit protected

Current output (4 to 20 mA)

Loop Accuracy ................32

A max. error (25 °C @ 24 VDC)

Isolation .......................... Low voltage < 48 VAC/DC from

electrodes and auxiliary power

Max cable .......................300 m (1000 ft)
Error condition ................22.1 mA
Max. Loop Resistance ....300

Compatible with PLC, PC or similar equipment

Frequency output

Max. Pull-up Voltage.......30 VDC
Compatible with Signet 8900, 9900, 9900-1BC

Digital (S

L) Output

Serial ASCII, TTL level 9600 bps
Compatible with Signet 8900, 9900
Max. cable length .....Application dependent (See 8900 manual)

Environmental Requirements

Enclosure........................NEMA 4X / IP65 (with cap installed)
Case ...............................PBT
Display ............................Polyamide
Storage Temperature ......-20 °C to 70 °C (-4 °F to 158 °F)
Relative Humidity............0 to 95% (non-condensing)
Operating Temperature
Ambient .......................-10 °C to 70 °C (14 °F to 158 °F)
Media .........................0 °C to 85 °C (32 °F to 185 °F)
Maximum
Operating

pressure

.....

10.3 bar @ 25 °C (150 psi @ 77 °F)
1.4 bar @ 85 °C (20 psi @ 185 °F)

Standards and Approvals

• CE,

UL/CUL

• NSF (3-2551-P versions only)
• RoHS

compliant

China RoHS (visit gfsignet.com for details)

•

Manufactured under ISO 9001 for Quality,
ISO 14001 for Environmental Management and
OHSAS 18001 for Occupational Health and Safety.

Declaration of Conformity according to FCC Part 15

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.

2551 Blind Magmeter

Installation

Pipe

ttings

Georg Fischer offers a wide selection of installation

ttings

that control the position of the Magmeter electrodes in relation
to the dimensions of the pipe. You will

nd a complete list of

order numbers for installation

ttings in the Calibration Tables

on pages 8, 9.

Location of Fitting

To ensure the

uid velocity pro

le is Fully Developed, without

distortion from piping system components, please adhere to
the recommended straight run geometry.

Reducer

15 x I.D.

5 x I.D.

20 x I.D.

5 x I.D.

90° Elbow

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

50 x I.D.

5 x I.D.

Pump/Valve

Sensor Mounting Position

Horizontal pipe Runs

To minimize adverse effects of air pockets, sediment, or
excessive rotor wear (Paddlewheels), avoid mounting the

sensor at the top of the pipe (0º), bottom of pipe (180º), or the
sides (90º from vertical.

Vertical Pipe Runs

Mount

ow sensorsin any direction. To ensure pipe is

owing

full, with some back pressure, it’s highly recommended the

uid

ow is upward.

Gravity and Discharge Lines

It’s recommended to install a trap to ensure pipe is full during

ow conditions, and to minimize air pockets.

180°

90°

0°

+GF

+GF+

Vertical flow is OK if the pipe remains full at

Vertical

ow is ok if the pipe

remains full at all times.

Type

Description

Plastic tees

• 0.5 in. to 2 in. versions
• MPVC or CPVC

PVC Glue-on
Saddles

• 10 in. and 12 in. only
• Cut 2½ in. hole in pipe
• Weld in place using

solvent cement

PVC Clamp-on
Saddles

• 2 in. to 4 in., cut 1-7/16

inch hole in pipe

• 6 in. to 8 in., cut 2-1/8 in.

hole in pipe

Iron Strap-on
saddles

• 2 in. to 4 in., cut 1-7/16

inch hole in pipe

• Over 4 inch, cut 2-1/8 inch

hole in pipe

• Special order 14 in. to

36 in.

Iron, Carbon Steel &
316 Stainless Steel
Threaded Tees

• 0.5 in. to 2 in. versions
• Mounts on Threaded

pipe ends

Carbon steel & Stainless
Steel Weld-on Weldolets

• 2 in. to 4 in., cut 1-7/16

inch hole in pipe

• Over 4 inch, cut 2-1/8 inch

hole in pipe

Fiberglass Tees

• 1.5 in. to 2 in. PVDF insert

Union Fittings
and Wafers

• For pipes from

DN 15 mm to 50 mm
PP or PVDF

FPT

2551 Blind Magmeter

Hardware Con

guration

Whether using the 2551-XX-11 (with frequency or Digital
(S

L) output) or the 2551-XX-12 (with 4 to 20 mA output), the

wiring terminals located on the inside of the yellow cover are
identical. All of the connections from the Magmeter to external
equipment (PLC, Datalogger, Chart Recorder, Flow meter,
etc.) are made at the large 4-position terminal connector.

When the cover is removed the wiring from the sensor can
be seen connected to the smaller terminal block. These
connections should always remain connected to prevent
inadvertent damage or miswiring.

The terminals on the 2551 Magmeter are designed for
conductors from 16 AWG to 22 AWG.

WARNING!

If the second conduit port is used, carefully drill
the opening. (The plastic is too strong to be
punched out.)

•

Secure the Magmeter in a vise to prevent damage
or injury.

•

The plastic inside the port is very thin. Do not allow
the drill to penetrate too deeply and damage the
Magmeter wiring.

JP2

White

Yellow

Red

Black

Brown

Blue

Not used

The factory connects
the sensor cable to the terminals
inside the yellow cover.

This blue jumper selects
frequency output or
S

L serial data output

in the 3-2551-XX-11
(Not used on 2551-XX-12 models)

The user must connect output cables to
this 4-terminal block.

JP2 is for factory use only.
MAKE NO CONNECTIONS.

Set this blue jumper according to the pipe size.

Sensor Type

Pipe Size

Jumper Position

2551-P0/T0/V0

½ in. to 2½ in.

DN15

DN65

2551-P0/T0/V0

3 in. to 4 in.

DN80

DN100

2551-P1/T1/V1

5 in. to 6 in.

DN125

DN150

2551-P1/T1/V1

in.

DN200

2551-P2/T2/V2

10 in. to 12 in.

DN250

DN300

Sensor grounding ring

3-9000.392-1
Liquid tight connector
(one supplied)

Use the yellow decal
to mark the direction
of flow on the pipe

External Earth Ground Terminal

Flow

Important:

• The directional arrow on the sensor body MUST be pointed DOWNSTREAM for correct

operation. (Digital (S

L) and 4 to 20 mA will not work if

ow is against direction of arrow).

• The FLOW arrow decal can be placed directly on the pipe to identify the direction of

ow.

•  Use a cable gland or a liquid tight connector to seal the cable ports from water intrusion.
•  The yellow housing may be reversed to align the conduit ports as required.
•  If the Magmeter is installed on a vertical pipe, the conduit ports should be turned to

point downward.

• This will prevent condensation from being channeled into the enclosure.
• Use plumber's tape or a suitable sealant on cable ports.

FAILURE TO FOLLOW THESE INSTRUCTIONS MAY RESULT IN
THE SENSOR BEING EJECTED FROM THE PIPE!

• DO NOT USE ANY TOOLS ON THE RETAINING CAP.

HAND TIGHTEN ONLY.

• LUBRICATE O-RINGS WITH A NON-PETROLEUM BASED,

VISCOUS LUBR ICANT (GREASE) COMPATIBLE WITH
THE SYSTEM.

• DO NOT USE THREAD SEALANT OR LUBRICANTS ON THE RETAINING CAP OR ON THE PLASTIC FITTING THREADS.

• IF LEAKING IS OBSERVED FROM THE RETAINING CAP, IT INDICATES DEFECTIVE OR WORN O-RINGS ON THE SENSOR.

DO NOT ATTEMPT TO CORRECT BY FURTHER TIGHTENING.

WARNING!

DO NOT USE thread sealant or
lubricants on the fitting threads.

Do not use any tools to
tighten the yellow retaining
cap. DO NOT USE thread
sealant or lubricants on
retaining cap!

Lubricate O-rings with a viscous
non-petroleum based lubricant
(grease) compatible with the system.

CHEMICAL COMPATIBILITY WARNING

The retaining nuts of Magmeters are not designed for prolonged contact with aggressive substances. Strong acids, caustic substances
and solvents or their vapor may lead to failure of the retaining nut, ejection of the sensor and loss of the process

uid with possibly

serious consequences, such as damage to equipment and serious personal injury. Retaining nuts that may have been in contact with
such substances, e.g. due to leakage or spilling, must be replaced.

2551 Blind Magmeter

General Installation and Grounding Tips

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

uids may require a longer conditioning period. (The Magmeter will not operate properly in

uids where the

conductivity is less than 20

S/cm.)

Grounding

The 2551 Magmeter is unaffected by moderate levels of electrical noise. 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.

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

2551 Magmeter is affected by electrical noise:
•

The ground terminal on the outside of the yellow housing
is connected internally to the grounding ring at the tip of
the sensor.

•

Connect a wire (14 AWG/2.08 mm

recommended) from

this terminal directly to a local Earth ground.

Install

uid grounding devices immediately upstream and

downstream of the Magmeter.
•

Connect the

uid grounds to the Earth ground terminal on

the 2551.

•

Use

anged grounding rings or metal electrodes on plastic

pipes, or metal clamps on metal pipes.

•

Fluid grounds must be in direct contact with the

uid, and

as near to the Magmeter as possible.

The shield from the output cable must be terminated at the
remote instrument ONLY.
This shield must be connected at only one end!

Connect an additional wire (minimum AWG 14/2.08 mm

)

from the remote instrument ground to the Magmeter
ground terminal.

Grounding rings on plastic pipe

(Install between flanges)

metal straps on metal pipe

Earth ground

Sensor
Grounding ring

(10 cm to 1.3 m)

4 in. to 50 in.

Instrument

Do not terminate
shield at Magmeter

The 2551-XX-12 Magmeter is a traditional 2-wire passive 4 to 20 mA loop transmitter.

• External loop power (24 VDC ± 10%) is required. See Ordering Information for power supplies.

• The maximum loop resistance the Magmeter can accommodate is 300

• All 2551-XX-12 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 Tables on pages 8-9 list the 20 mA setpoint for each installation

tting. Use this information to program the 4 to

20 mA range of the loop device (PLC, Datalogger, recorder, etc.)

• The 3-0250 USB to Digital (S

L) Con

guration/Diagnostic Tool is required to change the operating range.

Wiring with 4 to 20 mA Loop Output

Loop + (24 VDC)

Loop - (Ground)

4-20 mA Loop

monitor

(Maximum 300 Ω)

24 VDC ± 10%

2551 Magmeter

2551 Blind Magmeter

Wiring with Frequency or Digital (S

L) Output

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

• When the blue jumper illustrated here is placed over both pins, the 2551-XX-11

outputs an open collector frequency signal that can be connected to any
powered Signet

ow meter (models 8900, 9900, 9900-1BC).

• 5 VDC power is provided to the 2551 Magmeter by all Signet

ow instruments.

No additional power is required.

• The frequency output will be displayed as positive

ow regardless of the

ow direction.

Blue Jumper ON = FREQ OUT

Frequency

10K

5-24 VDC

Ground

Not used

Frequency Out

2551 Magmeter

Install a pull-up resistor when connecting the
2551 Magmeter to other manufacturer's flowmeters.

2551 Frequency Out to other manufacturer's equipment

• If connecting the 2551 Magmeter to a

ow instrument from another

manufacturer, 5 to 24 VDC power must be provided to the 2551.

• A 10 K

pull-up resistor (not supplied) must also be connected

between terminals 1 and 2.

Digital (S

L) Output (Compatible with 8900 Multi-Parameter Controller and

9900 Transmitter Only)

• When the blue jumper illustrated here is removed (or placed over one pin for storage)

the 2551-XX-11 outputs a Digital (S

L) signal compatible with the Signet 8900 and 9900.

• The 2551 receives 5 VDC power from the 8900 or 9900. No additional power is required.

• The 8900 will display 0 (Zero)

ow rate during periods of reverse

ow.

The 9900 will display negative numbers to indicate reverse

ow.

• The maximum cable length from the 2551 to the 8900 or 9900 depends on the 8900 or

9900 con

guration. Refer to the 8900 or 9900 manual for complete information.

Blue Jumper OFF = S

L OUT

S L

Calibration and Software Con

guration

No calibration is necessary to begin using the 2551. The application and performance settings are pre-set to meet the requirements
of most applications.
The 2551 application and performance settings can be customized using the Signet 3-0252 Con

guration Tool and software. Refer

to the Signet 3-0252 Con

gurationTool manual for details to adjust the following parameters:

• 4 to 20 mA span

: Factory setting is 0 to 5 m/s. Can be customized to any range.

• 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 customized to any velocity.

• 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.

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)

Frequency

Input

Frequency

Input 2

S3L

Input

S3L

Input

Freq.

Ground

+5 VDC

Not used

Data

2551 Magmeter

2551 Wiring to Signet 8900

DA
T

GND

SHLD

V+

2551 Magmeter

9900 Transmitter

+5 VDC

Ground

Not used

Frequency or S

2551 Wiring to
Signet 9900 and 9900-1BC

2551 Blind Magmeter

Calibration Data: K-Factors and Full Scale Current Values

Plastic Installation Fittings: PVC Tees and Saddles

Pipe

Size

(In.)

Fitting

Type

K-Factor
Gallons

K-Factor
Liters

20 mA=
in GPM

20 mA=
in LPM

SCH 80 PVC-U TEES FOR SCH 80 PVC PIPE

MPV8T005

2277.0

601.58

13.1

49.6

MPV8T007

1407.6

371.90

20.97

79.38

MPV8T010

861.17

227.52

34.21

129.5

1¼

MPV8T012

464.91

122.83

67.1

253.99

1½

MPV8T015

331.43

87.56

92.54

350.25

MPV8T020

192.89

50.96

145.15

549.38

SCH 80 PVC TEES FOR SCH 80 PVC PIPE

2½

PV8T025

131.46

34.73

228.2

863.74

PV8T030

82.52

21.80

363.55

1376.04

PV8T040

44.78

11.83

669.88

2535.49

SCH 80 PVC TEES FOR SCH 80 CPVC PIPE

MCPV8T005

2277.0

601.58

13.18

49.87

MCPV8T007

1407.6

371.90

21.31

80.67

MCPV8T010

861.17

227.52

34.84

131.86

1¼

MCPV8T012

464.91

122.83

64.53

244.24

1½

MCPV8T015

331.43

87.56

90.52

342.62

MCPV8T020

192.89

50.96

155.53

588.70

SCH 80 PVC SADDLES FOR SCH 80 PVC PIPE

PV8S020

193.83

51.21

154.77

585.81

2½

PV8S025

138.01

36.46

217.38

822.78

PV8S030

83.89

22.16

357.62

1353.60

PV8S040

40.88

10.80

733.88

2777.74

PV8S060

22.53

5.95

1331.85

5041.06

PV8S080

12.52

3.31

2395.41

9066.64

PV8S100

7.94

2.10

3778.75

14302.57

PV8S120

5.71

1.51

5256.69

19896.57

SCH 80 PVC SADDLES FOR SCH 40 PVC PIPE

PV8S020

180.01

47.56

166.66

630.81

2½

PV8S025

123.72

32.69

242.49

917.82

PV8S030

75.81

20.03

395.71

1497.76

PV8S040

41.87

11.06

716.56

2712.19

PV8S060

19.71

5.21

1521.92 5760.46

PV8S080

11.73

3.10

2558.12 9682.50

PV8S100

7.43

1.96

4037.60 15282.3

PV8S120

5.23

1.38

5734.87 21706.48

Plastic Installation Fittings for Metric Pipes:

Polypropylene True Union Tees and Wafers
PVDF True Union Tees, PVC True Union Tees

Pipe

Size

(Metric)

Fitting

Type

K-Factor
Gallons

K-Factor
Liters

20 mA=
in GPM

20 mA=
in LPM

POLYPROPYLENE FITTINGS (DIN/ISO, BS, ANSI)

DN15

PPMT005

2192.73

579.32

13.68

51.78

DN20

PPMT007

1327.81

350.81

22.59

85.52

DN25

PPMT010

737.16

194.76

40.70

154.04

DN32

PPMT012

453.46

119.81

66.16

250.41

DN40

PPMT015

275.03

72.66

109.08

412.86

DN50

PPMT020

164.17

43.35

182.74

691.66

PVDF FITTINGS (DIN/ISO, BS, ANSI)

DN15

SFMT005

1946.49

514.26

15.41

58.34

DN20

SFMT007

1158.05

305.96

25.91

98.05

DN25

SFMT010

749.09

197.91

40.05

151.58

DN32

SFMT012

439.51

116.12

68.26

258.36

DN40

SFMT015

248.93

65.77

120.52

456.16

DN50

SFMT020

146.85

38.80

204.30

773.26

PVC FITTINGS (DIN/ISO, BS, ANSI)

DN15

PVMT005

2067.76

546.30

14.51

54.91

DN20

PVMT007

1136.61

300.29

26.39

99.90

DN25

PVMT010

716.52

189.31

41.87

158.47

DN32

PVMT012

446.07

117.85

67.25

254.56

DN40

PVMT015

278.83

73.67

107.59

407.23

DN50

PVMT020

159.36

42.10

188.26

712.55

Metal Installation Fittings

Iron Saddles

Pipe

Size

(In.)

Fitting

Type

K-Factor
Gallons

K-Factor
Liters

20 mA=
in GPM

20 mA=
in LPM

SCH 80 IRON SADDLE ON SCH 80 PIPE

IR8S020

194.85

51.48

153.96

582.75

2½

IR8S025

142.28

37.59

210.86

798.10

IR8S030

87.53

23.13

342.72

1297.20

IR8S040

40.62

10.73

738.58

2795.54

IR8S050

29.28

7.74

1024.43

3877.48

IR8S060

22.30

5.89

1345.58

5093.03

IR8S080

12.52

3.31

2395.41

9066.64

IR8S100

7.94

2.10

3778.75

14302.57

IR8S120

5.65

1.49

5311.45

20103.83

SCH 80 IRON SADDLE ON SCH 40 PIPE

IR8S020

185.35

48.97

161.85

612.61

2½

IR8S025

127.47

33.68

235.36

890.83

IR8S030

76.62

20.24

391.54

1481.99

IR8S040

40.23

10.63

745.72

2822.57

IR8S050

27.32

7.22

1098.24

4156.83

IR8S060

19.71

5.21

1521.92

5760.46

IR8S080

11.61

3.07

2584.23

9781.30

IR8S100

7.36

1.94

4078.8

15438.2

IR8S120

5.18

1.37

5793.39

21927.98

2551 Blind Magmeter

Calibration Data: K-Factors and Full Scale Current Values

Metal Installation Fittings:

Carbon Steel Tees and Weld-o-Lets
Stainless Steel Tees and Weld-o-Lets, Galvanized Iron Tees

Pipe

Size

(In.)

Fitting

Type

K-Factor

Gallons

K-Factor

Liters

20 mA=

in GPM

20 mA=

in LPM

CARBON STEEL TEES ON SCH 40 PIPE

CS4T005

1572.66

415.50

19.08

72.20

CS4T007

1086.73

287.11

27.61

104.49

CS4T010

582.34

153.86

51.52

194.99

1¼

CS4T012

377.48

99.73

79.48

300.81

1½

CS4T015

267.79

70.75

112.03

424.02

CS4T020

167.85

44.35

178.73

676.48

STAINLESS STEEL TEES ON SCH 40 PIPE

CR4T005

1601.26

423.05

18.74

70.91

CR4T007

937.78

247.76

31.99

121.08

CR4T010

606.18

160.15

49.49

187.32

1¼

CR4T012

279.68

73.89

107.26

405.99

1½

CR4T015

147.65

39.01

203.19

769.06

CR4T020

111.90

29.56

268.09

1014.73

STAINLESS STEEL WELDOLETS ON SCH 40 PIPE

2½

CR4W025

106.31

28.09

282.19

1068.10

CR4W030

72.27

19.09

415.12

1571.25

CR4W040

36.84

9.73

814.34

3082.28

CR4W050

29.28

7.73

1024.70

3878.50

CR4W060

20.29

5.36

1478.26

5595.21

CR4W080

11.73

3.10

2557.72

9680.96

CR4W100

7.45

1.97

4028.83

15249.13

CR4W120

5.24

1.39

5722.73

21660.53

CARBON STEEL WELDOLETS ON SCH 40 PIPE

2½

CS4W025

105.70

27.93

283.82

1074.27

CS4W030

70.68

18.67

424.45

1606.56

CS4W040

36.38

9.61

824.65

3121.30

CS4W050

29.28

7.73

1024.70

3878.50

CS4W060

20.29

5.36

1478.26

5595.21

CS4W080

11.73

3.10

2557.72

9680.96

CS4W100

7.45

1.97

4028.83

15249.13

CS4W120

5.24

1.39

5722.73

21660.53

GALVANIZED IRON TEES ON SCH 40 PIPE

IR4T010

558.50

147.56

53.71

203.31

1¼

IR4T012

334.45

88.36

89.70

339.51

1½

IR4T015

248.97

65.78

120.49

456.07

IR4T020

146.00

38.57

205.48

777.76

Metal Installation Fittings:

Bronze and Copper Tees and Brazolets

Pipe

Size

(In.)

Fitting

Type

K-Factor

Gallons

K-Factor

Liters

20 mA=

in GPM

20 mA=

in LPM

BRONZE TEES ON SCH 40 PIPE

BR4T010

582.34

153.86

51.52

194.99

1¼

BR4T012

330.54

87.33

90.76

343.53

1½

BR4T015

254.76

67.31

117.76

445.71

BR4T020

157.36

41.58

190.64

721.58

COPPER TEES FITTING ON COPPER PIPE SCH K

CUKT005 2459.19

649.72

12.20

46.17

CUKT007 1108.02

292.74

27.08

102.48

CUKT010 649.87

171.70

46.16

174.73

1¼

CUKT012 422.03

111.50

71.09

269.06

1½

CUKT015 281.43

74.35

106.60

403.47

CUKT020 136.02

35.94

220.55

834.78

COPPER TEES FITTING ON COPPER PIPE SCH L

CUKT005 2406.30

635.75

12.47

47.19

CUKT007 1174.77

310.37

25.54

96.66

CUKT010 672.28

177.62

44.62

168.90

1¼

CUKT012 402.84

106.43

74.47

281.87

1½

CUKT015 294.99

77.94

101.70

384.92

CUKT020 149.63

39.53

200.50

758.89

COPPER/BRONZE BRAZOLET ON SCH 40 PIPE

2½

BR4B025

117.31

30.99

255.74

967.96

BR4B030

78.62

20.77

381.58

1444.28

BR4B040

45.13

11.92

664.77

2516.15

BR4B050

32.79

8.66

914.91

3462.95

BR4B060

22.73

6.01

1319.87 4995.72

BR4B080

13.14

3.47

2283.68 8643.71

BR4B100

8.34

2.20

3597.17 13615.29

BR4B120

5.87

1.55

5109.58 19339.76

2551 Blind Magmeter

Symptom

Possible Cause

Solution

Output is erratic and unstable.

Magmeter installed too close to upstream
obstruction.

Relocate the magmeter to have straight
uninterrupted pipe upstream of the sensor for
at least 10 x the pipe diameter.

Magmeter located in area exposed to air
bubbles/pockets.

Eliminate air bubbles in the pipe.

Magmeter is installed in pipe backwards.

Remove the magmeter and reinstall with
the

ow direction arrow on the sensor body

pointed DOWNSTREAM.

Electrical noise is interfering with the
measurement.

Review the grounding of the magmeter and
the pipe. Install adequate Earth ground to
allow the Magmeter to operate properly.

Electrodes are coated with solids.

Carefully clean the electrodes. Refer to
sensor manual for details.

New sensor; metal surface not properly
conditioned.

Soak sensor overnight in

uid.

Output is not 0 when

ow is

stopped.

Electrodes not adequately conditioned.

Soak sensor overnight in

uid.

Vibration or other movement in pipe causes
magmeter to detect

ow.

Increase the Low Flow Cutoff.

Electrical noise interference.

Modify grounding to protect the Magmeter
from interference.

Defective Magmeter.

Return to factory for service.

4-20 mA current output is incorrect.

Loop device not scaled same as Magmeter.

Use 3-0250 Setup tool to re-span the
Magmeter to match Loop device.
Re-span Loop device to match Magmeter.

Range Jumper not placed correctly.

Set Range Jumper correctly.

Defective Magmeter.

Return to factory for service

Frequency output is inoperative
Digital (S

L) output is inoperative.

Loop output is inoperative.

2551 is wrong model.

Frequency/S

L model: 3-2551-XX-11

Blue jumper not in correct position.

Place blue jumper correctly. (Pg. 4)

Wiring is not correct.

Check wiring, make corrections. (Pg. 7)

Frequency input to other manufacturer's

ow instrument does not have pull-up

resistor.

Install 10 k

resistor. (Pg. 7)

Output is 22.1 mA

Conductivity is less than 20

S/cm (the

uid is too clean for Magmeter).

Unsuitable application for Magmeter.

Electronic component failure.

Return 2551 to factory.

Maintenance

The 2551 Magmeter requires very little maintenance. There are no user-serviceable components in the Magmeter.
• If the

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.

Environmental Recommendations:

• When used properly, this product presents no inherent danger to the environment.
• Please follow local ordinances when disposing of this or any product with electronic components.

Troubleshooting

2551 Blind Magmeter

Troubleshooting with the RED and BLUE LEDs

Both Off:

The power is off or the sensor is not connected.

Solid Blue:

The power is on, the pipe is full, but there is no

ow in the pipe.

Blinking Blue:

Normal operation, blink rate is proportional to the

ow rate.

Alternating Red-Blue:

Empty pipe indication (electrodes are not wet).

Blinking Red:

System errors (electrical noise interference).

Solid Red:

Instrument error (defective electronics component).

If the 2551 detects an empty pipe:

• Frequency output will be locked to 0 Hz if electrodes are not wet.
• Digital (S

L) output will be locked to 0 if electrodes are not wet.

• 4 to 20 mA will be locked to 4 mA if electrodes are not wet.
• Blue and red LEDs will blink alternately if electrodes are not wet.

If the 2551 detects REVERSE FLOW:

• Frequency out cannot distinguish reverse

ow from forward

ow. The output will be the absolute value.

• With Digital (S

L) output, reverse

ow results in 0

ow rate displayed on 8900 or with negative numbers on the 9900.

• 4-20 mA output can be spanned into negative

ow range using the USB Setup Tool and software.

(Page 7) (example: 4-20 mA = –100 to +100 GPM).

Ordering Information

Accessories and Replacement Parts

Mfr. Part No.

Code

Description

O-Rings

1220-0021

198 801 000

O-ring, FPM (2 required per sensor)

1224-0021

198 820 006

O-ring, EPR (EPDM) (2 required per sensor)

1228-0021

198 820 007

O-ring, FFPM (2 required per sensor)

Replacement Transducers

3-2551-P0

159 001 211

PP/316L SS, DN15 to DN100 (½ to 4 in.) pipe

3-2551-P1

159 001 212

PP/316L SS, DN125 to DN200 (5 to 8 in.) pipe

3-2551-P2

159 001 444

PP/316L SS, DN250 to DN900 (10 to 36 in.) pipe

3-2551-T0

159 001 213

PVDF/Titanium, DN15 to DN100 (½ to 4 in.) pipe

3-2551-T1

159 001 214

PVDF/Titanium, DN125 to DN200 (5 to 8 in.) pipe

3-2551-T2

159 001 445

PVDF/Titanium, DN250 to DN900 (10 to 36 in.) pipe

3-2551-V0

159 001 376

PVDF/Hastelloy-C, DN15 to DN100 (½ to 4 in.) pipe

3-2551-V1

159 001 377

PVDF/Hastelloy-C, DN125 to DN200 (5 to 8 in.) pipe

3-2551-V2

159 001 446

PVDF/Hastelloy-C, DN250 to DN900 (10 to 36 in.) pipe

Replacement Electronics Module

3-2551-11

159 001 215

Magmeter electronics, frequency or digital (S

L) output

3-2551-12

159 001 216

Magmeter electronics, 4 to 20 mA output

3-2551-21

159 001 372

Magmeter display electronics, frequency or digital (S

L) output, with relays

3-2551-22

159 001 373

Magmeter display electronics, 4 to 20 mA output w/relays

3-2551-41

159 001 374

Magmeter display electronics, frequency or digital (S

L) output

3-2551-42

159 001 375

Magmeter display electronics, 4 to 20 mA output

Other

P31536

198 840 201

Sensor plug, Polypropylene

7310-1024

159 873 004

24 VDC Power Supply, 0.42 A, 10W

7310-2024

159 873 005

24 VDC Power Supply, 1.0 A , 24W

7310-4024

159 873 006

24 VDC Power Supply, 1.7 A, 40W

7310-6024

159 873 007

24 VDC Power Supply, 2.5 A, 60W

7310-7024

159 873 008

24 VDC Power Supply, 4.0 A, 96W

3-8050.390-1

159 001 702

Retaining Nut Replacement Kit, NPT, Valox

3-8050.390-3

159 310 116

Retaining Nut Replacement Kit, NPT, PP

3-8050.390-4

159 310 117

Retaining Nut Replacement Kit, NPT, PVDF

3-9000.392-1

159 000 839

Liquid-tight connector kit, 1 set, ½ in. NPT

3-0252

159 001 808

0252 Con

guration tool

Troubleshooting

Georg Fischer Signet LLC, 3401 Aero Jet 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

3-2551.090 Rev. P 04/16 English

Ordering Information

Mfr. Part No.

Code

Description

3-2551-P0-12

159 001 110

DN15 to DN100 (½ to 4 in.), Polypropylene and 316L SS

3-2551-T0-12

159 001 113

DN15 to DN100 (½ to 4 in.), PVDF and Titanium

3-2551-V0-12

159 001 259

DN15 to DN100 (½ to 4 in.), PVDF and Hastelloy-C

3-2551-P1-12

159 001 111

DN125 to DN200 (5 to 8 in.), Polypropylene and 316L SS

3-2551-T1-12

159 001 114

DN125 to DN200 (5 to 8 in.), PVDF and Titanium

3-2551-V1-12

159 001 260

DN125 to DN200 (5 to 8 in.), PVDF and Hastelloy-C

3-2551-P2-12

159 001 112

DN250 to DN900 (10 to 36 in.), Polypropylene and 316L SS

3-2551-T2-12

159 001 449

DN250 to DN900 (10 to 36 in.), PVDF and Titanium

3-2551-V2-12

159 001 451

DN250 to DN900 (10 to 36 in.), PVDF and Hastelloy-C

Mfr. Part No.

Code

Description

3-2551-P0-11

159 001 105

DN15 to DN100 (½ to 4 in.), Polypropylene and 316L SS

3-2551-T0-11

159 001 108

DN15 to DN100 (½ to 4 in.), PVDF and Titanium

3-2551-V0-11

159 001 257

DN15 to DN100 (½ to 4 in.), PVDF and Hastelloy-C

3-2551-P1-11

159 001 106

DN125 to DN200 (5 to 8 in.), Polypropylene and 316L SS

3-2551-T1-11

159 001 109

DN125 to DN200 (5 to 8 in.), PVDF and Titanium

3-2551-V1-11

159 001 258

DN125 to DN200 (5 to 8 in.), PVDF and Hastelloy-C

3-2551-P2-11

159 001 107

DN250 to DN900 (10 to 36 in.), Polypropylene and 316L SS

3-2551-T2-11

159 001 448

DN250 to DN900 (10 to 36 in.), PVDF and Titanium

3-2551-V2-11

159 001 450

DN250 to DN900 (10 to 36 in.), PVDF and Hastelloy-C

4 to 20 mA output

Frequency or Digital (S

L) output programmable open collector

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