Georg Fischer 2551 Operating Manual

Signet 2551 Blind Magmeter

*3-2551.090*

3-2551.090 Rev L 10/12 English

English

Topic: Page

1. Quick Start Guide 1

2. Speci cations 2

3. Installation: Pipe Fittings 3

4. Selecting a Location 3

5. Hardware Con guration 4

6. General Installation and Grounding Tips 5

Topic: Page

8. Wiring the Magmeter
with Frequency or Digital (S

3

L) Output 6

9. Calibration and Software Con guration 6

10. Calibration Data 7

11. Maintenance and Troubleshooting 11

12. Ordering Information 12

7. Wiring the Magmeter with 4 to 20 mA Loop 5

Description

The Signet 2551 Magmeter is an insertion-style magnetic  ow sensor. The patented sensor design is available in a variety of corrosion­resistant 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  ow  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

3

L) output for use with the Signet 5600 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 3-0250 USB to Digital (S

3

L) set-up tool is

available to customize every performance feature in the 2551 to adapt it to the speci c application requirements.

1. Quick Start Guide

This manual contains the general installation, wiring and calibration data for the Signet 2551-XX-11 Magmeter with Frequency or
Digital (S3L) 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.

1. Con gure the Hardware

2551-XX-11 ONLY: Position this Jumper to select

Digital (S3L) output or Frequency output. Sec. 5 Pg. 4.

2. Position the PIPE SIZE jumper according to your

pipe size. Sec. 5 Pg. 4.

3. Install the Magmeter into the pipe.

Use Signet installation  ttings ONLY.
The installation  tting is critical to Magmeter

performance. Sec. 3 Pg. 3.

4. Connect POWER and OUTPUT wiring.

Frequency out: Sec. 8.1 Pg. 6.
Digital (S
4 to 20 mA out: Sec. 7 Pg. 5.

GROUNDING

Without a good earth ground, the Magmeter may not

operate ef ciently. Sec. 6 Pg. 5.

3

L) out: Sec. 8.2 Pg. 6.

1.

FREQUENCY OUT

3

SERIAL (S

L) OUT

2.

Sensor Type Pipe Size Jumper Position

2551-P0/T0/V0 ½ in. to 2½ in.

DN15 to DN65

2551-P0/T0/V0 3 in. to 4 in.
DN80 to DN100

2551-P1/T1/V1 5 in. to 6 in.
DN125 to DN150

2551-P1/T1/V1 8 in.
DN200

2551-P2/T2/V2 10 in. to 12 in.
DN250 to DN300

3.

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

JP2

4

3

2

1

4.

4.

5.

5. 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. Sec. 5 Pg. 4.

2. Speci cations

y P, T,

SAFETY INSTRUCTIONS

1. Depressurize and vent system prior to installation or removal.

2. Con rm chemical compatibility before use.

3. Do not exceed maximum temperature/pressure speci cations.

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

5. Do not alter product construction.

6. Disconnect power before attempting any service or wiring.

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

3

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 auxilary 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 5600, 8900, 9900

3

Digital (S

L) Output:

• Serial ASCII, TTL level 9600 bps

• Compatible with Signet 8900, 9900

Environmental Requirements

• Case: PBT

• Display: Polyamide

Storage Temperature: -20 to 70 °C (-4 to 158 °F)
Relative Humidity: 0 to 95% (non-condensing)
Operating Temperature:

• Ambient: -10 to 70 °C (14 to 158 °F)

• Media: 0 to 85 °C (32 to 185 °F)

Max. 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
NEMA 4X / IP65 Enclosure (with cap installed)

China RoHS
For more information go to www.gfsignet.com

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.

Dimensions

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 Bod

or V

Operating Temperature/Pressure

(bar)(psi)

12.4

180

11. 7

170

11. 0

160

10.3

150

9.7

140

9.0

130

8.3

120

7.6

110

6.9

100

6.2

90

5.5

80

4.8

70

4.1

60

3.4

50

2.8

40

2.1

30

1.4

20

.7

10

0

-20

°C

°F

0204060 80 100 120

32

-4

68 104 140 176 212

248

2 2551 Magmeter

3. Installation: Pipe  ttings

Type Description

• 2 to 4 inch, 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.

• 0.5 to 2 inch versions

• MPVC or CPVC

• 2 to 4 inch, cut 1-7/16 inch hole in pipe

• 6 to 8 inch, cut 2-1/8 inch hole in pipe

• Available in 10 and 12 inch sizes only

• Cut 2-1/2 inch hole in pipe

• Weld in place using solvent cement

Iron, Carbon Steel,
316 SS
Threaded tees

Carbon steel &
stainless steel
Weld-on
Weldolets

• 2 to 4 inch, cut 1-7/16 inch hole in pipe

• Over 4 inch, cut 2-1/8 inch hole in pipe

• For pipes from DN 15 to 50 mm

• PP or PVDF

Type Description

Plastic
tees

Union Fittings and
Wafers

PVC
Clamp-on
Saddles

Iron
Strap-on
saddles

PVC
Glue-on
Saddles

• 1.5 in. to 2 in. PVDF insert

Fiberglass
tees

FPT

• 0.5 to 2 in. versions

• Mounts on threaded pipe ends

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 7-10.

4. Selecting a Location

• The 2551 requires a full pipe and a fully developed turbulent  ow pro le for accurate
measurement.

• If the piping system harbors air pockets or bubbles, take steps to locate the sensor so the
air pockets will not contact the electrodes.

• In vertical installations, assemble the 2551 so the conduit ports are facing downward.
This prevents condensation inside the conduit from being directed into the 2551
electronics housing.

• Chemical injection systems can temporarily alter the  uid conductivity and cause
anomalies in the magmeter measurement.

To avoid this problem, install the magmeter UPSTREAM of the injection point.

Reducer

Select a location with suf cient distance of
straight pipe immediately upstream of the sensor.

2 x 90° Elbow

25 x I.D. 5 x I.D.

Locating the sensor in a trap or where the  ow is
upward helps to protect the sensor from exposure
to air bubbles when the system is in operation.

+GF+

15 x I.D. 5 x I.D.

2 x 90° Elbow
3 dimensions

40 x I.D. 5 x I.D.

Flow 6.25 GPM

Total 1234567.8>

Signet Flow

Transmitter

ENTER

Flow

90° Elbow

20 x I.D. 5 x I.D.

Pump/Valve

OKOK OK

+

GF

+

GF
+

+

Flow 6.25 GPM

Total 1234567.8>

Signet Flow

Transmitter

Flow

50 x I.D. 5 x I.D.

ENTER

These con gurations are not recommended
because it is dif cult to keep the pipe full.

In a gravity- ow system, the tank must be designed
so the level does not drop below the outlet.

This causes the pipe to draw air in from the tank.
If air bubbles pass across the Magmeter
electrodes, the output will become erratic.

Vertical flow is OK if the pipe remains full at all times.

+GF+

+
GF

+

32551 Magmeter

5. Hardware Con guration

n

Whether using the 2551-XX-11 (with frequency or Digital (S3L)
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.

Important:

JP2 is for factory use only.
MAKE NO CONNECTIONS.

This blue jumper selects
frequency output or

3

S

L serial data output
in the 3-2551-XX-11
(Not used on 2551-XX-12 models)

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 to DN65

2551-P0/T0/V0 3 in. to 4 in.
DN80 to DN100

2551-P1/T1/V1 5 in. to 6 in.
DN125 to DN150

2551-P1/T1/V1 8 in.
DN200

2551-P2/T2/V2 10 in. to 12 in.
DN250 to DN300

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

JP2

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

Blue

4

Brown
Black

3

Red

2

Yellow
White

1

Not used

External Earth Ground Terminal

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

Flow

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

• The directional arrow on the sensor body MUST be pointed DOWNSTREAM for correct operation.
(Digital (S

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

3

L) and 4 to 20 mA will not work if  ow is against direction of arrow).

Sensor grounding ring

• 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.

Flow

Do not use any tools to
tighten the yellow retaining
cap. DO NOT USE thread

WARNING!

sealant or lubricants on
retaining cap!

Lubricate O-rings with a viscous

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,

non-petroleum based lubricant
(grease) compatible with the system.

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

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.

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.

4 2551 Magmeter