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.
The Vaisala HMP374 is the pressure-tight variant of the intrinsically safe HMT370EX range, designed to measure humidity and temperature in pressurised process environments. Its fitting allows the probe to be installed and removed through a ball valve without depressurising the process, making it well suited to compressed systems and classified pressurised zones.
Using the HUMICAP® sensor, it delivers dependable readings under pressure, with ATEX/IECEx (Ex ia) approval for pharmaceutical, chemical, petrochemical and offshore installations.
The HMP374 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 / hazardous environments |
| Certification | ATEX / IECEx (Ex ia) |
| RH Range | 0–100 %RH |
| Temperature Range | -40 to +60 °C |
| Sensor | HUMICAP® 180R |
| Connection | HMT370EX transmitter |
| Protection | IP66 |
| Installation | Pressurised process fitting |
The Vaisala HMP374 probe is designed for pressurised and hazardous process humidity monitoring:
Hinco Instruments is your authorised Vaisala distributor in Perth, WA. Contact us for pricing, availability, and technical support.
The Vaisala HMP373 is the short-probe HMT370EX variant for humidity and temperature measurement inside tanks, vessels and other confined, hard-to-reach spaces in hazardous areas.
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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.
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The Vaisala HMP375 is the high-temperature HMT370EX probe for humidity and temperature measurement in dryers, ovens and other heat-intensive processes in hazardous areas.
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