MMPX
for continuous online measurement
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Smart and robust. That’s Vaisala MMP8. Powered by the Vaisala HUMICAP® sensor technology, it has become a virtual standard in its field. Developed for demanding moisture measurements in transformer and lubrication oils, hydraulic fluids, and other liquids, HUMICAP® has continuously proven its worth over 20 years.
New: two probe lengths
The MMP8 is available in two probe lengths: standard 262 mm longer 448 mm
Versatile and capable. That’s MMP8. You can now measure dissolved moisture in oil in terms of water activity (aw), relative saturation (%RS), and temperature (T). It also calculates ppm concentration for transformer oils.
Flexible connectivity. That’s MMP8, a part of the Indigo Family and fully compatible with e.g. the flagship Indigo520 transmitter, the Indigo300, the handheld Indigo80, and our Vaisala Insight software for data visualization, easy probe configuration and self-calibration.
*DNV GL certificate applies to 262-mm long MMP8.
Choose the model, probes and accessories. Incompatible combinations are blocked as you go; the remaining rules are checked when the instrument is added to the quote.
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A code can be pasted and the configuration builds itself.
They are quoted separately: the instrument need not be configured.
Robust & reliable out of the box
Reliability. That’s MMP8. Its latest-generation Vaisala HUMICAP® 180L2 sensor, is the result of over 20 years of field experience. Its excellent chemical tolerance provides accurate and reliable measurement over a wide measurement range, with outstanding sensitivity in the dry end — making it ideal for transformer applications. Water activity or relative saturation directly indicate whether there is a risk of free-water formation. This data is relevant in lubrication oil applications where detecting water ingress and preventing free water formation is crucial. The measurement is independent of oil type and age.In addition to water activity, MMP8 can output ppm water content. This conversion is readily available for mineral transformer oil and other oil-specific conversion coefficients can be calculated if the water solubility of the oil is known and the solubility characteristics remain constant.
Easy installation
The MMP8 can be installed (and removed) even while a process is running — thanks to its ball-valve installation kit. Its probe installation depth is adjustable and pressure fitting options are ISO 1/2" and NPT 1/2". The MMP8 is delivered with a manual pressing handle that allows the probe to be pushed against process pressure. Standalone. The MMP8’s smart measurement and digital Modbus RTU over RS-485 connection within the probe fully support standalone use. Indigo-connected. The MMP8 is a part of the Vaisala Indigo family, which offers a robust display for data visualization, easy access to probe configuration, and more extensive options for connectivity, supply voltage and wiring. Easily configurable. Whether using the MMP8 on its own or with an Indigo transmitter, the Vaisala Insight software offers easy field calibration, probe configuration, and device analytics.
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