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Differential Pressure Transducers - Model: WGT-420
The model WGT-420 Differential Pressure Transducers have been developed primarily for HVAC and similar applications. It converts a differential or gauge air pressure signal to a 4-20 mA signal. It provides higher accuracy at the same cost as the LPTB models it replaces.
The new silicone sensor offers excellent performance characteristics at a low cost. A signal conditioning circuit runs as a two wire 4-20mA device.
The input pressure signals are mechanically dampened to reduce sensitivity to turbulence and short duration pressure fluctuations.
Integral zero and span adjustments are factory calibrated to specified output signal levels and may be field adjusted if required. The circuit design produces very little interaction between span and zero pots.
Typical applications of this instrument include HVAC monitoring of filter differential pressures, fan static pressures, clean room pressures, variable air volume systems and velocity pressures.
Differential Pressure
Transducers - Technical Data
| Accuracy: | ± 1% of span on ranges with span of 3" w.g. or more, ± 1.5% on smaller ranges |
| Output: | 4-20 mA, 2 wire |
| Overload Limit: | 3 x nominal maximum pressure; 5 x nominal max pressure with rezeroing |
| Operating Temperature: | -20 + 70°C |
| Temp Compensation Range: | 0 to 70°C |
| Pressure connection: | 0.180 OD slip on fitting |
| Supply voltage (Vs): | 9 to 30 Vdc |
| Media: | Air, and non-ionic fluids |
| Wetted parts: | Glass filled nylon, silicon diaphragm, alumina, ceramic |
Differential
Pressure Transducers - Ordering Data
| WGT-420-010B | ± 0 to 1" Wg |
| WGT-420-015 | 0 to 1.5" Wg |
| WGT-420-020 | 0 to 2" Wg |
| WGT-420-030 | 0 to 3" Wg |
| WGT-420-050 | 0 to 5" Wg |
| WGT-420-100 | 0 to 10" Wg |
The WGT-420 is normally supplied on snap-in track. It is also designed to fit in the same enclosure we use for our duct mount temperature and humidity instruments. Please specify enclosure mounting if required.
Differential Pressure Transducers - Downloads
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