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Confirm the functionality of refrigerant dryers with Vaisala’s DMT132 Dewpoint Transmitter.
The DMT132 maintains a Td accuracy of +/-1°C (+/-1.8°F) in the typical operating measurement range of -3°C to 20°C (26.6°F to 68°F) while the Vasiala HUMICAP sensor, resistant to compressor oil and many other chemicals, ensures superior long-term stability.
| Performance | |
| DEW POINT | |
| Measurement range | -20 ... +50 °C (-4 ... +122 °F) Td |
| Accuracy (at +20 °C (+68 °F) | ±1 °C for -3...20 °C (+26.6 ... +68 °F) Td ±2 °C for -15...-3 °C (+5 ... +26.6 °F) Td |
| * when dew point is below 0 °C (+32 °F), the transmitter outputs frostpoint | |
| Response time at 20 °C (+68 °F) gas temperature and 1 bar pressure | |
| -14 -> +3 °C (+7 -> +37 °F) Td | 17 s (63%) 40 s (90%) |
| +3 -> -14 °C (+37 -> +7 °F) Td | 33 s (63%) 85 s (90%) |
| Operating Environment | |
| Operating temperature Operating pressure Relative humidity Sample flow rate Measured gases | -10 ... + 60 °C (+14 ... +140 °F) 0 ... 20 bar 0 ... 100 %RH no effect on measurement accuracy gases non-corrosive gases |
| Outputs | |
| Analog output (scalable) | 4...20 mA, 2-wire |
| Resolution for current output | 0.002 mA |
| Accuracy of analog outputs at +20 °C | ±0.05% full scale |
| Typical temperature dependence | ±0.005% of full scale/ °C |
| Connector | 4-pin M8 (IEC 60947-5-2) |
| LED indication available for defined dew point limit/ error state indication RS485 serial line for service use | |
| General | |
| Sensor | Vaisala HUMICAP®180R |
| Recommended calibration interval (in refrigerant dryer application) | 2 years |
| Mechanical connection | G 1/2" ISO |
| Operating voltage | 10 .... 28 VDC |
| External load | max 100 ohm for supply voltages <20 VDC max 500 ohm for supply voltages 20...28 VDC |
| Weight | 65 g (2.3 oz) |
| Housing material | PPS + 40% GF |
| Housing classification | IP65 (NEMA 4) |
| Storage temperature range | -40 ... + 80 °C (-40 ... +176 °F) |
| Start-up time | 3 s |
| Complies with EMC standard EN61326-1, Electrical equipment for measurement control and laboratory use - EMC requirements; Industrial environment | |
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