To Next PageTo Next PageHow to troubleshoot no flow rate and 22 mA current output on GF Measuring Instruments?
If you're experiencing no flow rate and a 22 mA current output, it could mean that the fluid is too clean for the magmeter. In such cases, the application may be unsuitable for a magmeter. Another potential cause is an electronic component failure, which would require returning the 2551 to the factory.
What to do if GF Measuring Instruments output is not 0 when flow is stopped?
If the output isn't zero when the flow is stopped, one potential reason is that the electrodes haven't been adequately conditioned in the fluid. To resolve this, allow the sensor to sit in a full pipe for 24 hours, then restart it. Another possibility is that fluid is still moving inside the pipe. You can try increasing the Low Flow Cutoff.
Why is my GF signet 2551 Measuring Instruments blinking red?
If the GF Measuring Instruments' magmeter shows a blinking red light, it indicates electrical noise interference. To resolve this, review the grounding of both the magmeter and the pipe. Ensure you install an adequate Earth ground to allow the magmeter to operate correctly.
What to do if my GF Measuring Instruments show a solid blue light?
If your GF Measuring Instruments show a solid blue light, it means the power is on, but there is no flow in the pipe. Another possible cause is air bubbles in the pipe. Make sure to eliminate any air bubbles present.
What to do if my GF signet 2551 Measuring Instruments display a solid red light?
If the GF Measuring Instruments display a solid red light, this indicates a defective electronic component. In this case, return the 2551 to the factory.
What happens when GF signet 2551 Measuring Instruments detect an empty pipe?
When the GF Measuring Instruments detect an empty pipe, the frequency output will lock to 0 Hz if the electrodes are not wet. Also, the digital output will lock to 0 if the electrodes aren't wet. Furthermore, the 4-20 mA output will lock to 4 mA if the electrodes aren't wet. Finally, blue and red LED indicators on the magmeter circuit will blink alternately if the electrodes are not wet.
How to fix 'Error Not Saved' message on GF Measuring Instruments?
The 'Error Not Saved' message indicates that the main power is below the specified level. You should correct the main power deficiency.
What causes reverse flow issues in GF Measuring Instruments?
Reverse flow issues can arise because the frequency output cannot differentiate reverse flow from forward flow; the output will display the absolute value.
How do I troubleshoot no frequency output on GF Measuring Instruments?
If there's no frequency output, several factors could be at play. First, ensure that you have the correct model: 3-2551-21 (with relays) or -41 (without relays). Next, verify that the Options Menu is set correctly to 'Frequency'. Also, check the wiring for any errors and correct them. If you're connecting the frequency output to another manufacturer's flow instrument, it might lack a pull-up resistor.
General| Brand | GF |
|---|---|
| Model | signet 2551 |
| Category | Measuring Instruments |
| Language | English |
Measures flow rate using magnetic field; offers frequency, serial data, and 4-20mA output.
Available in three material combinations to match application requirements.
Details warranty terms, repair procedures, and product registration steps.
General safety steps, hazard symbols, PPE, and tool usage guidance.
Advises on compatibility of materials with aggressive substances to prevent failure.
Provides physical dimensions of the magmeter and insertion depths for different pipe sizes.
Details pipe size, flow range, linearity, repeatability, and wetted materials used.
Specifies enclosure, operating conditions, and power input requirements.
Details 4-20mA, Frequency, S³L outputs, and relay types, ratings, and modes.
Lists certifications such as CE, UL/CUL, NSF, RoHS, and ISO standards.
Lists available installation fittings and their descriptions for controlling electrode position.
Requirements for full pipe, turbulent flow, air pockets, and conduit port orientation.
Illustrates required straight pipe lengths upstream of the sensor for accurate measurement.
Explains how traps and upward flow can affect air bubble exposure and measurement.
Describes the dual-sided electronics module, conduit ports, and LED indicators.
Explains the sensor's directional arrow for forward flow indication and reverse flow display.
Explains how to configure an Open Collector output via the OPTIONS menu for Relay 1.
Details programming the OPTIONS menu for open collector frequency output and AUX PWR connection.
Explains passive 4-20mA output, external loop power, factory calibration, and spanning.
Wiring diagrams for connecting to 9900 Transmitter and 8900 Controller.
Details wiring for open collector output to non-Signet instruments requiring a pull-up resistor.
Describes mechanical and solid state relays, their ratings, and applications.
Explains the need for auxiliary power for relays and display backlighting, and its isolation.
Defines terminal designations: NO (Normally Open), NC (Normally Closed), C (Common).
Advises on using RC filter for inductive loads to prevent arcing and relay damage.
Describes the default display showing flow rate and resettable totalizer.
Lists the seven main menus for accessing calibration and programming features.
Explains two methods to access menus: scrolling to "Enter Menu" or holding ENTER.
Explains keypad operations and the function of the four-digit security code.
Displays basic information like flow rate, totalizer, current output, and relay states.
Step-by-step instructions for resetting the resettable totalizer, including security code use.
Setting the K-Factor based on pipe size and units for accurate flow measurement.
Setting display units, timebase, totalizer factor, and units.
Setting the flow rates for 4-20mA output and the minimum flow rate cutoff.
Adjusting averaging time and sensitivity for optimal flow rate response.
Explains how averaging time smooths flow rate display and output response.
Describes how sensitivity overrides averaging for quick response to flow surges.
Illustrates how averaging and sensitivity settings affect flow rate display over time.
Explains flow direction indication, totalizer behavior, and output scaling for reverse flow.
Provides K-Factor values for various pipe sizes and fittings made of Polypropylene, PVDF, and PVC.
Continues K-Factor tables for Steel, Bronze, Copper, and Iron fittings.
Explains how K-Factors account for non-ideal flow conditions and custom calibration.
Step-by-step guide to calibrating using a known volume of fluid.
Method for calibrating against a reference flow meter, useful for large pipes.
Programming a relay to activate for a fixed period based on fluid volume.
Programming a relay to activate when the resettable totalizer reaches a specific value.
Setting relays for High, Low, or Window modes based on flow rate setpoints.
Configuring flow rate setpoints, hysteresis, and time delays for relay activation.
Simple method to verify system operation by testing output signals and relays.
Configuring language, security code, contrast, reset lock, noise rejection, and decimals.
Selecting output modes like Frequency, Frequency ÷ 10, Mirror Relay 1, or S³L Digital.
Recommendations for proper grounding to eliminate electrical noise and ensure measurement accuracy.
Basic maintenance, including cleaning electrodes with soft cloth and mild detergent.
Notes on environmental safety and proper disposal of electronic components.
Troubleshooting erratic output, zero flow issues, and incorrect signal readings.
Diagnosing blank displays, no backlighting, or error messages like "Error Not Saved".
Explains LED states and how the magmeter indicates empty pipe conditions.
Part numbers, codes, and descriptions for frequency/digital output models.
Part numbers, codes, and descriptions for 4 to 20 mA output models.
Lists available replacement parts like O-rings, retaining nut kits, and RC filter kits.
