Vaisala HUMICAP® HMT360 wall mount transmitter is designed specifically for hazardous and explosive environments. The entire transmitter can be placed into zone 0.
There are six different models depending on the probe:
HMT361 for Wall Mounting
HMT363 for Confined Spaces
HMT364 for High Pressure
HMT365 for High Temperature
HMT367 for High Humidities
HMT368 for Pressurized Pipelines