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The Kobold PMP differential pressure transmitting switch is designed to control and measure the low differential pressure of clean dry air or non-corrosive gases. The PMP is used for monitoring pressure across HEPA filters by measuring the pressure difference across the filter assembly. The need for servicing or replacing a filter can then be monitored by the increased differential pressure which trips a programmable relay. An additional relay produces an alarm if the differential pressure continues to rise. The PMS display the differential pressure on a four-digit red LED display. For remote transmission to a DCS or building automation system , a 4- 20 mA loop output signal is available. The PMP utilizes a micro processor to control and program Relays with time delay feature, hysteresis, and analog output. Power options are compatible with any available plant power; 24 VAC/DC, 120 VAC or 230 VAC.
| Range | 0...500 mm H2O (50 mbar) |
| Max. Pressure | 750 mbar |
| Ambient Temperature | -10...60 °C |
| Housing | Polycarbonate |
| Pressure Connection | 2x 1/4" NPT Female or 2x hose connectors or 6 x 8 mm tubing |
| Accuracy | ±1% of Full Scale |
| Resolution | 0.1 mm W.C. |
| LED-Indication | 4-digit, 15 mm high |
| Supply Voltage | 24, 110, 230 VAC 50/60 Hz or 24 VDC |
| Power Input | 4 VA |
| Max. Cable Diameter | 2.5 mm2 |
| 2 relays | max. 230 VAC, 0.5 A |
| Output | 4- 20 mA (load max. 500 Ω) |
| Protection | IP 65 |
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