MHT410 Moisture, Hydrogen and

Temperature Transmitter

For online transformer condition monitoring

Features and benefits

• Measures moisture and hydrogen

directly in transformer oil

• Compatible with mineral oil,

natural ester oil, synthetic ester

oil, and silicone oil

• Easy to install

• Provides early warning on

potential transformer faults

• Unique probe design allows for

direct measurement in oil

• 5-year standard warranty

• Robust design providing reliable

operation and no false alarms

• Maintenance-free operation

• No cross-sensitivity to other

gases

• Indigo520 compatible, with easy

access to measurement data

Vaisala MHT410 Moisture, Hydrogen and Temperature Transmitter provides reliable

online monitoring of insulating oil in power transformers.

Real-time measurement

Vaisala Moisture, Hydrogen and

Temperature Transmitter MHT410

provides an accurate real-time

measurement result for critical

parameters measured in oil, enabling

reliable conclusions on the transformer's

condition. With its unique probe design,

MHT410 delivers accurate measurement

and trend data about the health of the

transformer in real time.

Enabling proactive

maintenance decisions

All of the transmitter's measured

parameters are available through digital

and analog outputs, providing

information on transformer fault

situations and enabling timely, proactive

maintenance decisions to minimize

expensive service shutdowns and

outages.

MHT410 is also compatible with the

Vaisala Indigo500 series transmitters.

With its local graphical display,

Indigo520 is a great addition to MHT410.

It helps you to identify data trends at the

site, as well as power the MHT410 with a

single-wire solution.

Robust and maintenance-free

operation

MHT410 is designed for ease of use in

demanding environments. It has

undergone extensive testing to ensure it

withstands wide temperature changes,

vibration, and harsh outdoor conditions.

The transmitter has no consumables or

moving parts that could break, and is

encased in an IP66-rated metal housing

equipped with a weather shield.

Every unit is individually tested for a

pressure of at least 10 bar and also

withstands vacuum conditions. Special

attention has been given to EMC

tolerance: for example, all electrical

connections are isolated. MHT410 can

also tolerate short-term power outages.

1.5” NPT

334

132

94.5

202

38.5

51

25.5

76.5

74

150

125

mm