The Vaisala HMP377 is the high-humidity HMT370EX probe, holding accuracy in wet, near-saturated and condensing conditions such as drying rooms and humid storage in hazardous areas.
The Vaisala HMP377 is the high-humidity variant of the intrinsically safe HMT370EX range, built to hold accuracy in wet, near-saturated and condensing conditions — drying rooms, humid storage and process areas where moisture would defeat a standard probe.
Its HUMICAP® sensor and moisture-resistant design maintain stable performance at high RH, with ATEX/IECEx (Ex ia) approval for classified zones in food, pharmaceutical and industrial facilities.
The HMP377 connects to the Vaisala HMT370EX transmitter — see the HMT370EX series datasheet (PDF). Hinco Instruments is your authorised Vaisala distributor in Perth, WA.
| Measurement | Relative Humidity & Temperature |
|---|---|
| Application | High-humidity / hazardous |
| RH Range | 0–100 %RH (including condensing) |
| Certification | ATEX / IECEx |
| Temperature Range | -40 to +60 °C |
| Sensor | HUMICAP® 180R |
| Connection | HMT370EX transmitter |
| Protection | IP66 |
| Installation | High-humidity process fitting |
The Vaisala HMP377 probe is designed for high-humidity monitoring in hazardous environments:
Hinco Instruments is your authorised Vaisala distributor in Perth, WA. Contact us for pricing, availability, and technical support.
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The Vaisala HMP371 is the general-purpose probe in the intrinsically safe HMT370EX range, for wall- and duct-mounted humidity and temperature measurement in industrial and hazardous-area installations.
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The Vaisala HMP374 is the pressure-tight HMT370EX probe for humidity and temperature measurement in pressurised process environments, installable through a ball valve without depressurising.
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