Moisture and Temperature in Oil Transmitter Series MMT330

for hydraulic and lubrication systems and transformer oil monitoring

Note that the MMT330 series is being discontinued. It is replaced by Indigo family products. Do not specify MMT330 for new projects, instead view Indigo transmitters and probes that are also designed for use in demanding applications.

Vaisala HUMICAP® Moisture and Temperature Transmitter MMT330 series enables fast and reliable detection of moisture in oil in central lubrication systems, hydraulic systems and power transformers. The series is also compliant with DNV GL 2.4 type approval (Class B).

Looking for MMT330 performance with interchangeable probes and a transmitter supporting two probes? View Indigo family.

There are three probe types to enable various types of installations:

MMT332 for high pressure installations, see also MMP8
MMT337 for tight spaces with a thread connection, see also MMP8
MMT338 for pipeline installations, see also MMP8

Datasheet

Key Benefits

Easy to install and operate

Installation through ball valve. No need to shut down the process.

Fast

Online, real-time detection of moisture in oil without sampling.

Reliable

Tells the true margin to water saturation point in all changing conditions, taking into account e.g. temperature changes and aging of oil.

Features

Continuous online measurement of moisture in oil
Installation through ball valve. No need to shut down the process.
Proven Vaisala HUMICAP® sensor, used for over 15 years in oil application
Easy field calibration and maintenance – compatible with Vaisala HUMICAP® Hand-Held Moisture Meter for Oil MM70
Online, real-time detection of moisture in oil without sampling.
Integrated data logging, with over four years of measurement history
Traceable calibration to national standards (certificate included)
Multi-year Calibration Care agreement option to ensure as-good-as new accuracy for years

Product documentation

Datasheets User guides More in Docs.vaisala.com

More downloads

Customer Stories

Customer case

Hydroelectric plant benefits from early detection of moisture in oil

World’s largest hydroelectric plant implemented real-time water-in-oil detection to increase availability of its generating units.

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Customer case

Moisture management in power transformers

TRANSEC UK Ltd. provides first-rate on-line moisture management for oil-filled power transformers – with a little help from Vaisala’s online moisture and temperature monitoring.

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Customer case