HMT361 Intrinsically Safe (Ex ia) Humidity and Temperature Transmitter for Wall Mounting - Vaisala Online Store

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HMT361 Intrinsically Safe (Ex ia) Humidity and Temperature Transmitter for Wall Mounting

The HMT361 is the top-of-the-line wall-mounted intrinsically safe transmitter for hazardous areas. In addition to displaying humidity and temperature readings, the HMT361 calculates dew point, absolute humidity, wet bulb temperature, and mixing ratio. The Vaisala HUMICAP® Humidity and Temperature Transmitter HMT360 series incorporates Vaisala’s 30 years of experience in industrial humidity measurement.

The transmitter has a large display for convenient monitoring of the reading and transmitter setting changes. For example scaling can easily be changed by the user.

Analog outputs are preset at the factory to:

  • Channel 1: 4…20 mA = -40...+60°C (-40...+140°F) Td
  • Channel 2: 4...20 mA = -40...+60°C (-40...+140°F) T

Safe operation with the entire transmitter in hazardous areas: Div I and II (USA, Canada), Categories 1G/Zone 0 and 1D/Zone 20 with protection cover (EU).

In order to achieve a safe installation, each 4-20mA output requires an external intrinsically safe electrical surge barrier. Surge barriers should be located outside the hazardous area in a general purpose electronics enclosure. Each 4-20mA loop will require a separate barrier.

See all HMT360-series Exi transmitters

The package includes:

  • Calibration certificate (ISO9001 compliant, traceable)
  • NPT1/2" conduit fitting included to facilitate wiring
  • User's Guide in English

 HMT361 Intrinsically Safe (Ex ia) Humidity and Temperature Transmitter for Wall Mounting
HMT360-series: HMT361 Intrinsically Safe Humidity and Temperature Transmitter for Wall Mounting
Standard delivery time for single unit: 1 week
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Warranty: 24 months
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Detailed information

Measurement parameter(s)Relative humidity
Absolute humidity
Temperature
Dew point
Wet bulb
Mixing ratio
Measurement range0 ... 100 % RH
-40 ... +60 °C (-40 ... +140 °F) T
Measurement accuracyAt temperature +20 °C (68 °F):
± 1.0 % RH (0 ... 90 % RH)
± 1.7 % RH (90 ... 100 % RH)
± 0.2 °C (± 0.36 °F) T
Operating temperaturefor electronics -40 ...+ 60 °C (-40 ... +140 °F)
with display -20 ...+ 60 °C (-4 ... +140 °F)
storage -40 ...+ 70 °C (-40 ... +158 °F)
Operating voltage12 ... 28 V
Analog outputstwo-wire 4 ... 20 mA x2
Digital outputsRS-232C
Housing classificationIP66 (NEMA 4X)
Links See full specifications on Vaisala.com
Download user guides and other product documents on Vaisala.com


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