TM PVC WATER METERS - 1/2" TO 2"
SERIES GPI-TM
PVC Digital Water Meters - 1/2" to 2" 
(Was Model 31802V), (Was Model 31802VSP)
Meter Type
Economy Water Flowmeter, turbine type, battery powered that displays rate of flow and totals.
How It Works
Magnetic pulses are picked up by a coil. The computer converts the pulses into a flow rate and totals.
Standard Features
- Sch 80 PVC Body
- Rate of Flow, 2 Totals (1 Resettable Batch, 1 Cumulative)
- User Configurable to GPM, LPM or any Unit of Measure
- Factory Calibrated for 1.0 Specific Gravity
- Field Calibratable for fluids greater than 1.0 Specific Gravity
- Digital Display with 6 Digits Starting at 0.01 (floating decimal)
- Totals Maximum of 99,999,999
- Powered by (2) AAA Alkaline Batteries (2-year life)
- Factory Calibration Certificate supplied with each meter
- Suitable for Water Cooling Systems, Waste Water, Irrigation, Batching
- Upgradeable to Remote Display, 4-20mA Output, Pulse Output (Open Collector NPN)
- 1 Year Limited Warranty
Specifications
| Connection Size (NPT Female) | |||||
|---|---|---|---|---|---|
| 1/2" | 3/4" | 1" | 1-1/2" | 2" | |
| FLOW RANGE | 1 - 10 GPM (3.8 - 37.9 LPM) | 2 - 20 GPM (7.6 - 75.7 LPM) | 5 - 50 GPM (18.9 - 190 LPM) | 10 - 100 GPM (38 - 380 LPM) | 20 - 200 GPM (76 - 760 LPM) |
| ACCURACY (Of Reading) | ± 3% | ± 3% | ± 3% | ± 3% | ± 3% |
| REPEATABILITY | ± 0.1% | ± 0.1% | ± 0.1% | ± 0.1% | ± 0.1% |
| PRESSURE RATING at 73°F | |||||
| NPT Threaded and Spigot | 225 PSIG (15.3 Bar) | 225 PSIG (15.3 Bar) | 225 PSIG (15.3 Bar) | 225 PSIG (15.3 Bar) | 225 PSIG (15.3 Bar) |
| BSP | 150 PSIG (10.3 Bar) | 150 PSIG (10.3 Bar) | 150 PSIG (10.3 Bar) | 150 PSIG (10.3 Bar) | 150 PSIG (10.3 Bar) |
| TEMPERATURE RATING | 32°F to 140°F (0°C to 60°C) | 32°F to 140°F (0°C to 60°C) | 32°F to 140°F (0°C to 60°C) | 32°F to 140°F (0°C to 60°C) | 32°F to 140°F (0°C to 60°C) |
| PRESSURE DROP (AT FULL CAPACITY) | 7.5 PSIG (0.52 Bar) | 5.2 PSIG (0.36 Bar) | 9.8 PSIG (0.68 Bar) | 3.8 PSIG (0.26 Bar) | 4.7 PSIG (0.32 Bar) |
| TYPICAL K-FACTOR | 2500 PPG / 660 PPL | 1100 PPG / 291 PPL | 565 PPG / 149 PPL | 215 PPG / 57 PPL | 100 PPG / 26 PPL |
| RECOMMENDED STRAINER SIZE | 120 Mesh (125 Microns) | 120 Mesh (125 Microns) | 120 Mesh (125 Microns) | 35 Mesh (500 Microns) | 35 Mesh (500 Microns) |
| STRAIGHT PIPE REQUIREMENTS | |||||
| Minimum Upstream | 5" (127mm) | 7.5" (191mm) | 10" (254mm) | 15" (381mm) | 20" (508mm) |
| Minimum Downstream | 2.5" (64mm) | 3.75" (95mm) | 5" (127mm) | 7.5" (191mm) | 10" (254mm) |
| WETTED MATERIALS | |||||
| Body | PVC | PVC | PVC | PVC | PVC |
| Bearings | Ceramic | Ceramic | Ceramic | Ceramic | Ceramic |
| Shaft | Tungsten Carbide | Tungsten Carbide | Tungsten Carbide | Tungsten Carbide | Tungsten Carbide |
| Rotor | PVDF | PVDF | PVDF | PVDF | PVDF |
| Retaining Rings | 316 Stainless Steel | 316 Stainless Steel | 316 Stainless Steel | 316 Stainless Steel | 316 Stainless Steel |
| Seals | n/a | n/a | n/a | n/a | n/a |
| CONN. TO CONN. LENGTH | |||||
| NPT Threaded | 6" (152.4mm) | 6.1" (154.9mm) | 6.5" (165.1mm) | 7.8" (198.1mm) | 7.9" (200.7mm) |
| Spigot | 4.3" (109.2mm) | 4.4" (111.8mm) | 4.5" (114.3mm) | 5.4" (137.2mm) | 5.5" (139.7mm) |
Options
- GPM or LPM Flow Rate
- 4-20mA Output
- BSPP (Female) 1″ – 2″ Only
- N.I.S.T. Certification
Replacement Parts
- See Series GPI-P317
Optional Accessories
Alternate Meters
Application Notes
- Saturated Steam Service: Not acceptable
- Potable Water: Not acceptable (See Series GPI- QSE)
- Vacuum Service: Not acceptable
- Gaseous Service: Not acceptable
- General Non-Suitable Services: Not acceptable for petroleum products, deionized (DI) or ultra-pure water applications. Not suitable for medias with varying viscosities. For clean filtered water only.
- Installation: Do not allow media to freeze inside meter. Installation to metal connections is not recommended. Limit display’s exposure to sun.
- Corrosion: Before ordering, verify all materials of our flow meters are compatible with the service media(s), intermittently used cleaners, the environment, and cleaning processes in conjunction with the temperatures and pressures of the application(s) and future applications. John C. Ernst Co. does not make chemical compatibility recommendations. Compatibility is the responsibility of the user and/or specifying party.
Model Number Matrix
