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Products Temperature Dew Point Transmitter

Vaisala Dew Point Meter for Refrigerant Dryers - DMT132
 
Vaisala

Model: DMT132

DMT132 is an affordable dew point measurement instrument designed to verify the functionality of refrigerant dryers. It is especially well suited for OEM dryer manufacturers.


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Features

• High accuracy ±1 °C (±1.8 °F) in the measurement range of refrigerant dryers
• Excellent long-term stability - resistant to compressor oil and most other chemicals thanks to HUMICAP technology
• Low power requirements, 10 ... 28 VDC
• Easy to verify functionality with compatible hand-held meters DM70 or HM70
• Optional LED warning light

Measurement Performance

Dew Point Measurement range: -20 to +50 °C Td
Accuracy at +20 °C: ±1 °C for -3 to 20 °C Td*; ±2 °C for -15 to -3 °C Td*

Response Time at 20 °C (+68 °F) Gas Temperature and 1 Bar Pressure
-14 → +3°C Td: 17s (63%); 40s (90%)
+3 → -14°C Td: 33s (63%); 85s (90%)

Calculated Variables
Dew point converted to atmospheric pressure: Tdf atm
*When dew point is below 0 °C (+32 °F), the transmitter outputs frostpoint

Operating Environment
Operating temperature: -20 to + 60°C
Operating pressure: 0 to 20bar
Relative humidity: 0 to 100%RH
Sample flow rate: no effect on measurement accuracy
Measured gases: non-corrosive gases
EMC compliance: EN61326-1, Industrial Environment

Outputs
Analog output (scalable): 4 to 20mA, 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 RS-485 serial line for service use

Mechanical Specifications
Sensor: Vaisala HUMICAP 180R
Recommended calibration interval (in refrigerant dryer application): 2 years
Mechanical connection: G 1/2" ISO
Operating voltage: 10 to 28 VDC
External load: max 100Ω for supply, voltages <20 VDC; max 500Ω for supply voltages, 20 to 28VDC
Weight: 65 g (2.3 oz)
Housing material: PPS + 40% GF
IP rating: IP65 (NEMA 4)
Storage temperature range: -40 to + 80°C
Start-up time: 3s

Please refer to product's datasheet (PDF)
Product Dimensions (mm): 125.5 x 30 x 30
Package Dimensions (mm): 0 x 0 x 0
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