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The Walchem WFM Series Water Meter Contactors are precision-engineered devices designed to accurately measure and monitor water flow in a variety of industrial and commercial applications. Featuring a 1" NPT male connection and utilizing a reed switch mechanism, these contactors are built to provide reliable and accurate flow measurement through pulse-based output. The WFM Series is ideal for applications requiring precise flow rate data and robust performance in demanding environments.
Power
| Sensor | Reed switch | Hall effect |
| Max.Current | 20 mA | 20 mA |
| Max.voltage | 24 VDC or VAC | 24 VDC |
| Power | None | min 6mA @ 12VDC |
Pressure: Maximum 150 psi operating
Temperature: Maximum 105ºF (40ºC)
Cable Length: 12 ft. standard, 2000 ft. max.
Materials of Construction:
Body: Cast Bronze
Internals: Engineered Thermoplastic
Magnet: Alnico
Flow Rates (GPM):
| Size | Minimum | Maximum |
| ¾” | 0.22 GPM | 22 GPM |
| 1” | 0.44 GPM | 52 GPM |
| 1½ ” | 0.88 GPM | 88 GPM |
| 2” | 1.98 GPM | 132 GPM |
Accuracy ± 1½ % of reading
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