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Signet 2551 Display Magmeter

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 faceshield during installation/service.

5. Do not alter product construction.

*3-2551.090-1*

3-2551.090-1 Rev. K 10/12 English

1. Description

The 2551 Magmeter measures the  ow rate in a full pipe by monitoring the voltage produced when the (conductive)  uid moves through

a magnetic  eld. Output options include a traditional frequency signal, a serial data (Digital (S

L)) output, and a 4 to 20 mA output.

The 2551 Magmeter is available in three sizes that will accommodate pipes from ½-inch through 36-inch diameters.

Select from three different material combinations to match the Magmeter to the application requirements.

English

1. Description 1

2. Speciﬁ cations 2

3. Installation: Pipe ﬁ ttings 3

3.1 Installation: Selecting a Location 3

4. Overview of 2551 Display versions 4

5. Wiring 5

5.1 Basic Wiring 5

5.2 Wiring: Mirror Relay 1 output 5

5.3 2551 and other manufacturer's instruments 5

5.4 Wiring to Signet Flow Instruments 6

5.5 Wiring Relays 7

6. View Menu 8

6.1 Resetting the Resetable Totalizer 8

6.2 Navigating the Menus 9

6.3 Keypad Functions 9

6.4 Security Code 9

7. Setup Menu 10

7.1 Averaging and Sensitivity 11

7.2 Bi-Directional Flow 12

7.3 Calibration Data 12

8. Calibration Menu 14

8.1 Volume method of calibration 14

8.2 Rate method of calibration 14

9. Relay Menus 15

9.1 Pulse Relay mode 15

9.2 Total Relay mode 15

9.3 High, Low, or Window Relay modes 16

10. Test Menu 17

11. Options Menu 17

11.1 Output Modes 17

12. Technical Information 18

12.1 Grounding 18

12.2 Maintenance 19

12.3 Troubleshooting 19

13. Ordering Information 20

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 LUBRICANT (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.

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

non-petroleum based, viscous

lubricant (grease) compatible

with the system.

Contents

WARNING!

Summary of content (20 pages)

PAGE 1
English Signet 2551 Display Magmeter *3-2551.090-1* 3-2551.090-1 Rev. K 10/12 English 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 faceshield during installation/service. 5. Do not alter product construction. 1.
PAGE 2
. Speciﬁcations General • Pipe size range: • Flow Range (Bi-directional) • Linearity: • Repeatability • Minimum Conductivity: DN15 to DN900 (½ to 36 in.) Minimum: 0.05 ms (0.15 ft/s) Maximum: 10 ms (33 ft/s) ±1% of reading +0.01 ms (0.033 ft/s) ±0.
PAGE 3
. Installation: Pipe Fittings 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 12-13. Type Plastic tees Description Type • 0.5 to 2 inch versions • MPVC or CPVC Description Iron, Carbon Steel, 316 SS Threaded tees • 0.5 to 2 in.
PAGE 4
. 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: • Loop Power • Flow Output Signal (current loop, Digital (S3L), frequency or Mirror Relay 1 output). 2.
PAGE 5
. Wiring 5.1 Basic Wiring Frequency output 3-2551-21 and -41 Magmeters may be programmed in the OPTIONS menu to provide an open collector FREQUENCY output. • The maximum frequency output is 1000 Hz (@ 10 meters per second) • If the Frequency ÷ 10 output is selected, the maximum frequency is 100 Hz (@ 10 meters per second). • AUX PWR must be connected to power the display backlighting and to power the relay coils if included.
PAGE 6
5.4 Wiring to Signet Flow Instruments The 2551-21 and -41 Magmeter can be con gured in the OPTIONS menu to provide a Frequency or Digital (S3L) output. Frequency output can be used by Signet 5600 Flow Transmitter, and by Signet 8900 Multi-Parameter Controller and 9900 Transmitter. The Digital (S3L) output can be used by the 8900 and 9900.
PAGE 7
NC1 When used to switch inductive loads, dry contact relays may be damaged by arcing. Signet recommends the installation of a lter device to prevent such damage. NO2 3-8050.396 159 000 617 RC Filter kit (for relay use) C1 NC2 C2 NO3 Relay 3 Type: Solid State Rating: 50 mA @ 30 VDC, 50 mA @ 42 VAC Relay 3 is a solid state relay. It can be applied exactly the same as a dry contact relay, but the current rating is 0.2 A (200 mA) maximum.
PAGE 8
6. 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 Resettable Totalizer on the lower line of the display. • The Right Prompt symbol (>) always indicates a sub-menu associated with the current display. In this display it points the way to the TOTALIZER RESET function. See section 6.1 for detailed instructions.
PAGE 9
6.2 Navigating the Menus Normal Operation Display The normal operating display shows the Flow Rate on the top line and the Resettable Totalizer on the bottom line. • All menu instructions in this manual assume that the instrument is showing this display. RELAY 1 RELAY 2 1234.56 GPM 876543.21 > Signet Magmeter ENTER 2551 Menu Directory The 2551 Magmeter uses seven main menus to provide access to the calibration and programming features. Each menu serves a speci c function.
PAGE 10
7. Setup Menu The Setup menu contains all of the parameters necessary for the 2551 Magmeter to begin measuring ow. NOTE: The Security Code must be entered before any changes can be made to the Setup menu. See the Options menu in section 11 for details. RELAY 1 RELAY 2 Enter Menu Setup > Signet Magmeter Enter Code 0000 ENTER Use the keypad to navigate through each setting. ENTER The values shown for each menu item represent the factory standard setting.
PAGE 11
7.1 Averaging and Sensitivity Even the most carefully engineered ow systems may experience erratic and unstable conditions. If the instability is communicated to the output functions, the results may create problems for control devices. No Averaging With AVERAGING set to zero, the ow rate will be displayed immediately and with no ltering. This line represents the actual output of the ow sensor as it responds to unstable ow conditions in the pipe.
PAGE 12
7.2 Bi-Directional Flow • The 2551 magmeter is designed to measure bi-directional ow. • The forward 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. Flow Rate Display: The "+" sign is suppressed during forward ow. "-123.45 GPM" during reverse ow.
PAGE 13
7.3 Calibration Data: K-Factors 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 Bronze and Copper Tees and Brazolets Pipe Size (In.) K-Factor Liters CARBON STEEL TEES ON SCH 40 PIPE ½ CS4T005 1572.66 415.50 ¾ CS4T007 1086.73 287.11 1 CS4T010 582.34 153.86 1¼ CS4T012 377.48 99.73 1½ CS4T015 267.79 70.75 2 CS4T020 167.85 44.35 STAINLESS STEEL TEES ON SCH 40 PIPE ½ CR4T005 1601.26 423.05 ¾ CR4T007 937.78 247.
PAGE 14
8. Calibration Menu The K-Factors published in this manual assume that the ow conditions in the pipe are ideal. RELAY 1 Many factors that affect the ow rate are beyond the control of the magmeter; variations in actual pipe dimensions, pipe smoothness, and other ow conditions will contribute to the total system error. Performing a custom calibration with the magmeter in place will adjust the K-Factor and can serve to compensate for installation conditions that may be less than ideal. RELAY 2 1234.
PAGE 15
9. Relay Menus Magmeter models 3-2551-21 and -22 have two dry contact relays (Relays 1 and 2) and one Solid State relay (Relay 3). RELAY 1 RELAY 2 1234.56 GPM 876543.21 > Any of these relays can be set to any of the operating modes listed below. Signet Magmeter The setpoint values for HIGH, LOW and WINDOW modes can be set to negative values if required. For example, a LOW alarm might be set to activate if the ow rate falls below -10 GPM.
PAGE 16
9.3 High, Low, or Window Relay modes Program the relay to activate when the ow rate reaches a setpoint (High or Low) or when the ow rate moves outside of a prescribed range (Window). RELAY 1 Reverse Flow The setpoint values for HIGH, LOW and WINDOW modes can be set to negative values if required. For example, a LOW alarm might be set to activate if the ow rate falls to -10 GPM. RELAY 2 1234.56 GPM 876543.
PAGE 17
10. 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 RELAY 1 Test Output 4.20 mA > Shown for 4 to 20 mA models only (3-2551-XX-22, -42). Use the keypad to enter any current output from 4.0 mA minimum to 22.1 mA maximum. Test Relay 1 Open Closed > Shown for Relay models Only Toggle any of these relays ON and OFF to verify that the system is operating properly.
PAGE 18
12. 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. • Use PTFE tape or a suitable sealant on cable ports. • The 2551 magmeter must be carefully grounded to eliminate electrical noise that may interfere with the measurement.
PAGE 19
12.3 Troubleshooting Symptom Possible Cause Solution 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.
PAGE 20
13. Ordering Information Sensor Part No. 3-2551 Sensor Body (Transducer) and electrodes/grounding ring materials - Choose one -P Polypropylene and 316L SS -T PVDF and Titanium -V 3-2551 -P PVDF and Hastelloy-C Pipe size - Choose one 0 DN15 to DN100 (1/2 to 4 in.) 1 DN125 to DN200 (5 to 8 in.) 2 DN250 to DN900 (10 to 36 in.