Designed for hazardous environments. The whole transmitter can be installed directly into an explosive area. A fully configurable transmitter.

Five interchangeable probe models for a variety of applications: HMT361 for wall mounting HMT363 for duct mounting and tight spaces HMT364 for high pressures up to 100 bar and vacuum conditions HMT365 for high temperatures HMT367 for high humidities HMT368 for pressurized pipelines up to 40 bar Intrinsically safe - the whole transmitter can be installed into the explosive area Complies with classifications from VTT (CENELEC, Europe), FM (USA), CSA (Canada), TIIS (Japan), and PCEC (China), VTT (IECEx) The interchangeable probe module contains all calibration coefficients, so a calibrated probe can be switched in the field without the need to input any data manually

Relative humidity measurement
	Measurement range	0 ... 100 % RH
	Accuracy at +20 °C (68 °F)	± 1.0 % RH (0 ... 90 % RH) ± 1.7 % RH (90 ... 100 % RH)
	Sensor	Vaisala HUMICAP® 180
	general use	Vaisala HUMICAP® 180R
	applications with a      demanding chemical      environment	Vaisala HUMICAP® 180L2
Temperature measurement
	Measurement range
	HMT361	-40 ... +60 °C (-40 ... +140 °F)
	HMT363	-40 ... +120 °C (-40 ... +248 °F)
	HMT364/365/367/368	-40 ... +180 °C (-40 ... +356 °F)
	Typical accuracy of electronics at +20 °C (68 °F)	± 0.2 °C (± 0.36 °F)
	Sensor	Pt 1000 RTD 1/3 Class B IEC 751
Other optional variables available
	Dewpoint temperature, mixing ratio, absolute humidity, wet bulb temperature.
Operating environment
	Temperature      for electronics      with display      storage	-40 ...+ 60 °C (-40 ... +140 °F) -20 ...+ 60 °C (-4 ... +140 °F) -40 ...+ 70 °C (-40 ... +158 °F)
Inputs and outputs
	Operating voltage	12 ... 28 V
	with serial port (service      mode)	15 ... 28 V
	Analog outputs	two-wire 4 ... 20 mA, one standard, one optional
	Digital outputs	RS-232C serial output for service use
Mechanics
	Weight (housing) Material (housing) Housing classification	950 g G-AlSi 10 Mg (DIN 1725) IP66 (NEMA 4X)
Options and accessories
	Additional analog output	4 ... 20 mA
	Duct mounting installation kit (for HMP363/367)	210697
	Installation flange (for HMP365)	210696
	Ball valve set (for HMP368)	BALLVALVE-1
	Serial interface cable for PC	25905ZZ
	Protection cover	214101 (for use in the presence of combustible dust)
	Galvanic isolator	212483
	Zener barrier (USA & Canada)	210664