GF signet 2551 User Manual
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GF signet 2551 User Manual

Magmeter
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Signet 2551 Magmeter
*3-2551.090-1*
3-2551.090-1
Rev. G 10/08
SAFETY INSTRUCTIONS
1.
Depressurize and vent system 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 faceshield during installation/service.
5.
Do not alter product construction.

1.0 Description

The 2551 Magmeter measures the fl ow rate in a full pipe by monitoring the voltage produced when the (conductive) fl uid moves through
a magnetic fi eld.
Output options include a traditional frequency signal, a serial data (digital) output, and a 4-20 mA output.
The 2551 Magmeter is available in three sizes that will accommodate pipes from ½ inch through 12 inch diameters.
Select from four different material combinations to match the magmeter to the application requirements.
Contents
WARNING!
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.
•
THE O-RINGS CAN BE LIGHTLY LUBRICATED TO
FACILITATE INSERTION INTO THE PIPE FITTING. DO
NOT USE PETROLEUM-BASED LUBRICANTS!
•
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.
English
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5
5
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9
Flow
Do not use any tools to
tighten the yellow retaining cap.
DO NOT USE thread sealant or
lubricants on retaining cap!
The O-rings can be lightly
lubricated to facilitate insertion
into the pipe fitting.
DO NOT USE petroleum-based
lubricants on O-rings!
DO NOT USE thread sealant
or lubricants on the fitting
threads.
English
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Summary of Contents for GF signet 2551

  • Page 1: Table Of Contents

    Signet 2551 Magmeter English *3-2551.090-1* 3-2551.090-1 Rev. G 10/08 English SAFETY INSTRUCTIONS Depressurize and vent system prior to installation or removal. Confi rm chemical compatibility before use. Do not exceed maximum temperature/pressure specifi cations. Wear safety goggles or faceshield during installation/service.

  • Page 2: Specifi Cations

    2.0 Specifi cations Relay Specifi cations • Relay 1 and 2 Type: Mechanical SPDT Rating: 5 A @ 30 VDC max., 5 A @ 250 VAC max. Wetted Materials: • Sensor body and Electrodes and Grounding ring: • Relay 3 Type: Solid State •...

  • Page 3: Installation: Pipe Fi Ttings

    To avoid this problem, install the magmeter UPSTREAM of the injection point. Inlet Outlet Select a location with suffi cient Flange Reducer 90° Elbow +GF+ +GF+ +GF+ distance of straight pipe immediately 15 x I.D. 5 x I.D. 10 x I.D.

  • Page 4: Overview Of 2551 Display Versions

    4.0 Overview of 2551 Display Magmeter 2551 Display Magmeters use a dual-sided electronics module and dual conduit ports. Unused ports must be sealed to protect the electronics from water damage. 1. The lower set of conduit ports provide access to the wiring terminals for: •...

  • Page 5: Wiring

    5.0 Wiring 5.1 Basic Wiring Frequency output 4-20 mA output • 3-2551-21 and 3-2551-41 Magmeters may be programmed The 3-2551-22 and 3-2551-42 Magmeters provide a passive 4-20 to provide an open collector FREQUENCY output. mA loop output. • The maximum frequency output is 1000 Hz (@ 10 meters per •...

  • Page 6: Wiring To Signet Flow Instruments

    5.4 Wiring to Signet Flow Instruments 2551 and 8900 Multi-Parameter Controller: Digital Out 2551 and 8900 Multi-Parameter Controller: Frequency Out Auxiliary Power for: Auxiliary Power for: Display backlighting Display backlighting Relay Coils Relay Coils I/O Module 3-8900.401-X 3-8900.621C I/O Module 3-8900.401-X 3-8900.621C +5VDC (Black) +5VDC (Black)

  • Page 7: Wiring Relays

    5.5 Wiring Relays Relay 1, Relay 2 Type: Mechanical SPDT Rating: 5A @ 30 VDC max., 5 A @ 250 VAC max Relays 1 and 2 are dry contact relays rated for 5 A maximum current. Relays 1 and 2 are best suited for switching high voltage loads, such as AC powered pumps and valves.

  • Page 8: View Menu

    6.0 View Menu The VIEW menu contains all of the basic information available from the magmeter. • The normal operating display shows the FLOW RATE on the top line of the display and the Resetable Totalizer on the lower line of the display. •...

  • Page 9: Navigating The Menus

    6.2 Navigating the Menus Normal Operation Display The normal operating display shows the Flow Rate on the top line and the Resetable RELAY 1 RELAY 2 Totalizer on the bottom line. 1234.56 GPM • All menu instructions in this manual assume that the instrument is showing this 876543.21 >...

  • Page 10: Setup Menu

    7.0 Setup Menu The Setup menu contains all of the parameters necessary for the 2551 Magmeter to begin measuring fl ow. RELAY 1 RELAY 2 NOTE: The Security Code must be entered before any changes can be made to the Setup menu. Enter Menu See the Options menu in section 11 for details.

  • Page 11: Averaging And Sensitivity

    7.1 Averaging and Sensitivity Even the most carefully engineered fl ow systems may experience No Averaging With AVERAGING set to zero, the fl ow rate will be displayed erratic and unstable conditions. If the instability is communicated immediately and with no fi ltering. This line represents the to the output functions, the results may create problems for actual output of the fl...

  • Page 12: Bi-Directional Flow

    7.2 Bi-Directional Flow • The 2551 magmeter is designed to measure bi-directional fl ow. Flow • The forward fl ow direction is indicated by the directional arrow molded into the side of the 2551 sensor. • The conduit ports are assembled at the factory to point UPSTREAM. They may be reversed by disassembling the components of the magmeter and reassembling.
  • Page 13 7.3 Calibration Data: K-factors Iron Saddles PIPE SIZE FITTING K-Factor K-Factor (IN.) TYPE Gallons Liters SCH 80 IRON SADDLE ON SCH 80 PIPE IR8S020 194.85 51.48 Polypropylene True Union Tees and Wafers 2½ IR8S025 142.28 37.59 Polypropylene Clamp-on Saddles IR8S030 87.53 23.13 PVDF True Union Tees...

  • Page 14: Calibration Menu

    The accuracy of this calibration method is largely dependent on the accuracy of the reference meter and the proximity of the reference to the Signet 2551 Magmeter. The fl ow rate shown is based on the existing calibration of the 2551.

  • Page 15: Relay Menus

    9.0 Relay Menus Magmeter models 3-2551-21 and 3-2551-22 have two dry contact relays (Relays 1 and 2) and one Solid State relay (Relay 3). RELAY 1 RELAY 2 1234.56 GPM Any of these relays can be set to any of the operating modes 876543.21 >...

  • Page 16: High, Low, Or Window Relay Modes

    9.3 High, Low, or Window Relay modes Program the relay to activate when the fl ow rate reaches a setpoint (High or Low) or when the fl ow rate moves outside of a prescribed range (Window). RELAY 1 RELAY 2 1234.56 GPM 876543.21 >...

  • Page 17: Test Menu

    10.0 Test Menu The Test menu provides a simple method to verify that the system is operating properly. Auxiliary power MUST be connected to the 2551 to activate the relays Shown for 4-20 mA models Only Test Output Use the keypad to enter any current output from 4.0 mA minimum 4.20 mA >...

  • Page 18: Technical Information

    12.0 Technical Information 12.1 Grounding Precalibration conditioning: The magmeter may appear to be unstable immediately after installation. Allow the sensor to sit in a full pipe for 24 hours before beginning calibration and operation. • Use a cable gland or a liquid tight connector to seal the cable ports from water intrusion. •...

  • Page 19: Troubleshooting

    12.3 Troubleshooting Symptom Possible Cause Solution • Magmeter installed too close to • Relocate the magmeter to have upstream obstruction. straight uninterrupted pipe upstream • Output is erratic and unstable. • Magmeter located in area exposed to of the sensor for at least 10 x the pipe air bubbles/pockets.

  • Page 20: Ordering Information

    13.0 Ordering Information Sensor Part No. 3-2551 Sensor Body (Transducer) and electrodes/grounding ring materials - Choose one Polypropylene and 316L SS PVDF and Titanium PVDF and Hastelloy C -W PVDF and 316L SS Pipe size - Choose one DN15 to DN100 (1/2 to 4 in.) DN125 to DN200 (5 to 8 in.) DN250 to DN300 (10 to 12 in.) Display Options - Choose One...

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