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Moisture in oil probe MMP8
VAISALA

Moisture in oil probe MMP8

Continuous online moisture measurement probe for transformer and industrial oils.


Product Overview

The Vaisala MMP8 is a smart moisture-in-oil measurement probe designed for continuous online monitoring of transformer oils, lubrication oils, hydraulic fluids, and other liquids. Using Vaisala HUMICAP® sensor technology, MMP8 measures water activity, relative saturation, temperature, and calculated water concentration in transformer oil. The probe can operate as a standalone measurement device or be connected to Vaisala Indigo transmitters for display, configuration, and connectivity.

Key Specifications

Measurement:
- Water Activity (aw)
- Relative Saturation (%RS)
- Temperature
- Water Concentration (ppm) for transformer oils

Sensor Technology: HUMICAP®
Measurement Range: -70 to +180 °C
Moisture Accuracy: Up to ±0.02 aw / 2 %RS
Temperature Accuracy: Up to ±0.1 °C
Probe Lengths:
- Standard: 262 mm
- Long: 448 mm
Communication: Modbus RTU over RS-485
Installation: Ball-valve installation
Pressure Fittings: ISO 1/2" and NPT 1/2"
Compatibility:
- Indigo520
- Indigo300
- Indigo80
- Vaisala Insight
Applications:
- Transformer oil
- Lubrication oil
- Hydraulic fluids
- Industrial oil monitoring

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