GPI MR 5-30 Series User Manual (English)

Questions and Answers:

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Colton JordanAug 3, 2025
Why is my GPI Measuring Instruments leaking fuel?
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  Elizabeth DavisAug 3, 2025
  Fuel leakage in your GPI Measuring Instruments can occur due to several reasons: * Leakage at the counter drive shaft: Replace the cover plate assembly. * Leakage between the cover plate and housing: Remove the cover plate and check for damaged, missing, or incorrectly seated seals. Replace if needed. * Leakage at fittings: Remove the fittings and inspect for damaged, missing, or incorrectly seated seals. Replace as necessary. * Leakage at threads: Remove the meter and reseal all threaded connections using thread tape or a pipe thread sealing compound approved for use with flammable liquids.
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Dana GarciaAug 12, 2025
What to do if the meter counter of my GPI Measuring Instruments does not operate with normal fuel delivery?
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  Jorge PittmanAug 12, 2025
  If the meter counter on your GPI Measuring Instruments isn't working during normal fuel delivery, here are a few potential causes and solutions: 1. **Broken counter assembly**: Replace the counter. 2. **Foreign material**: Remove and clean the counter assembly or nutator assembly. 3. **Broken nutator disc pin or defective nutator assembly**: Install a new nutator assembly. 4. **Missing or worn bevel gear**: Replace the bevel gear.
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Yvonne EllisAug 21, 2025
How to fix a meter counter that doesn't operate with little fuel flow in GPI Measuring Instruments?
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  Alexander WilliamsAug 21, 2025
  If your GPI Measuring Instruments meter counter isn't working when there's little to no fuel flow, consider the following: * **Clogged strainer**: Clean or replace the strainer. * **Malfunctioning system components**: Check all system components from the tank to the nozzle for clogs or malfunctions, and repair as needed. * **Foreign material in nutator assembly**: Remove and clean the nutator assembly.

GPI MR 5-30 Series Specifications

General

Accuracy	± 0.5% of reading
Materials of Construction	Stainless steel
Connection Size	1/2" NPT
Display	LCD
Power Supply	Battery
Fluid Compatibility	Oil, Water, Chemical
Operating Temperature	-40°F to +250°F (-40°C to +121°C)