The Vaisala HMP378 is the pipeline HMT370EX probe for in-situ humidity and temperature measurement in pressurised compressed-air and gas pipelines in hazardous areas.
The Vaisala HMP378 is the pipeline variant of the intrinsically safe HMT370EX range, designed to measure humidity and temperature directly in pressurised pipelines carrying compressed air and industrial gases. Its pressure-rated fitting installs into the line for continuous in-situ monitoring.
Built around the HUMICAP® sensor, it provides reliable readings under line pressure, with ATEX/IECEx (Ex ia) approval for oil-and-gas, mining and energy pipeline applications.
The HMP378 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 | Pressurised pipelines / hazardous |
| Certification | ATEX / IECEx |
| RH Range | 0–100 %RH |
| Temperature Range | -40 to +60 °C |
| Sensor | HUMICAP® 180R |
| Connection | HMT370EX transmitter |
| Protection | IP66 |
| Installation | Pipeline insertion with pressure fitting |
The Vaisala HMP378 probe is designed for pressurised pipeline monitoring in hazardous areas:
Hinco Instruments is your authorised Vaisala distributor in Perth, WA. Contact us for pricing, availability, and technical support.
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