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VAISALA Moisture in Oil Probe MMP8
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Vaisala HUMICAP® Moisture in Oil Probe MMP8 enables fast and reliable measurement of moisture in oil. It uses the proven Vaisala HUMICAP® sensor that was developed for demanding moisture measurements in transformer and lubrication oils, hydraulic fluids, and other liquids.
MMP8 measures dissolved moisture in oil in terms of water activity (aw), relative saturation (%RS), and temperature (T). It also calculates ppm concentration for specific oils.
MMP8 is part of the Indigo family and is compatible with Indigo500 and Indigo200 series transmitters. It can be used with the Vaisala Insight PC software for data visualization, easy probe configuration and self-calibration.
Key Benefits
The sensor's excellent chemical tolerance provides accurate and reliable measurement over a wide measurement range, with outstanding sensitivity in the dry end of the range – typically needed in transformer applications.
In addition to water activity, MMP8 can output ppm, the average mass concentration of water in oil. Vaisala has this conversion readily available for mineral transformer oil. For other oils, the oil-specific conversion coefficients can be calculated if the water solubility of the oil is known and the solubility characteristic remains constant. This allows the continuous measurement of ppm concentration in power transformer condition monitoring.
MMP8 is part of the Vaisala Indigo family, so it can be used with Vaisala Indigo200 transmitters. The transmitters offer various additional benefits such as a display for data visualization, easy access to probe configuration, and more extensive options for connectivity, supply voltage, and wiring.
Whether using the MMP8 on its own or with an Indigo transmitter, it can be connected to the Vaisala Insight software for easy field calibration, probe configuration, and device analytics.