Measure relative humidity and temperature in even the most hazardous area with the Vaisala intrinsically safe transmitters. Transmitters withstand continuous exposure to potentially explosive environments that contain flammable liquids, gases, or dust—rated for use in up to Zone 0 and 20.

Easily configure outputs and adjust measurement calibration directly on the local graphical display. Two 4 to 20 mA outputs provide connectivity options to automation systems. Connect the transmitter to free Vaisala Insight software with a USB cable (order separately) for additional configuration and monitoring options.

All probes feature a thin-film capacitive Vaisala HUMICAP sensor that offers excellent accuracy, long-term stability, and negligible hysteresis. Each probe comes with a detachable probe module allowing the probe to be easily calibrated outside the hazardous area without removing the entire transmitter. Select a transmitter with a probe option best suited for your application.