Oil Moisture Transmitter MMT330 Series

Vaisala Oil Moisture Transmitter MMT330 enables fast and reliable detection of moisture in oil. The MMT330 can be used in on-line moisture monitoring and as a control device, allowing separators and oil driers to be started only when needed. Proper monitoring saves both oil and the environment. With the MMT330 it is easy and economical to monitor the effects of moisture in oil.

Vaisala Official Distributor in Humidity, Dewpoint, Continuous Monitoring System (CMS) viewLinc (2015),
Temperature, CO2, Barometric Pressure, Moisture in Oil, Wind etc in Malaysia since 1990s


  • Reliable Vaisala HUMICAP technology
  • For diverse applications and demanding conditions
  • Indicates the margin to water saturation
  • Water content as ppm conversion
  • Graphical measurement trend and historical display
  • Versatile outputs
  • Easy installation

Model MMT332 with Small Flanged Probe for High Pressure Processes
MMT337 with Small Pressure Tight Probe
MMT338 with Adjustable Probe for Pressurized Pipelines
Measurement Range 0...1
Accuracy 0...0.69, ±0.02 0.9...1.0, ±0.03
Power supply 10-35VDC, 24 VAC
Output Analog outputs (2 standard, 3rd optional)
current output 0...20 mA, 4...20 mA
voltage output 0...1 V, 0...5 V, 0...10 V
Digital outputs RS-232, RS-485 (optional)
Relay outputs 0.5 A, 250 VAC, SPDT, Potential Free (optional)
Mechanics Cable bushing M20x1.5 for cable diameter 8...11mm/0.31...0.43"
Conduit fitting 1/2" NPT
Interface cable connector (optional) M12 series 8 pin (male)
cable option 2 with plug (female) with screw terminals
Probe cable diameter 5.5 mm
Probe cable lengths 2 m, 5 m or 10 m
Housing material G-AlSi 10 Mg (DIN 1725)
Housing classi. cation IP 65 (NEMA 4X)
Remarks Mounting with Wall Mounting Kit
Mounting with DIN Rail Installation Kit
Pole Installation with Installation Kit for Pole or Pipeline
Mounting Rain Shield with Installation Kit


Specific References

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