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Vaisala MMT143 | Moisture and Temperature Transmitter for Oil | Water activity (aw), IP66 stainless steel, RS-485 Modbus
The Vaisala MMT143 is a compact, rugged moisture and temperature transmitter for transformer, lubrication and hydraulic oils. It measures water activity (aw), relative saturation (%RS) and temperature, with ppm output for common transformer oils. It is well suited to OEM applications.
Key features
- Continuous oil moisture measurement based on HUMICAP technology
- Calculates ppm for transformer oils
- IP66-rated stainless steel construction
- RS-485 digital output with Modbus support
- 5–28 V (digital) and 18–28 V (analog) DC power
- Compatible with Indigo80 handheld and Insight PC software
- Specifications
- Downloads
| Part Number | MMT143 |
| Brand | Vaisala |
| Measured parameters | Water activity (aw), relative saturation (%RS), temperature |
| Housing | IP66 stainless steel |
| Digital output | RS-485, Modbus |
| Supply voltage | 5–28 V DC (digital), 18–28 V DC (analog) |
| Calibration | Traceable, certificate included |
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