Vaisala HMT360 Humidity and Temperature Transmitter

Vaisala's HMT360 humidity and temperature transmitter is designed for use in potentially explosive atmospheres. The electronics are designed so that the transmitter is intrinsically safe.

HMT 330 Brochure PDF File

HMT 330 Order Guide

HMT 330 Operation Manual PDF File

Six models for demanding applications:
- HMT331 for wall mounting
- HMT333 for duct mounting and tight spaces
- HMT334 for high pressures up to 100 bar and vacuum conditions
- HMT335 for high temperatures
- HMT337 for high humidity and meteorological applications
- HMT338 for pressurized pipelines up to 40 bar
Full 0...100 %RH measurement, temperature range up to +180 °C (+356 °F), depending on model
Vaisala HUMICAP® Sensor for excellent accuracy and stability
Warmed probe for superior performance in condensing environments
Shows measurement trends and 1-year history graphically
Multilingual user interface
Excellent performance in harsh chemical concentrations
Corrosion resistant IP65 housing
NIST traceable (certificate included)

Relative humidity measurement
	Measurement range Accuracy at +20 °C (68 °F) Sensor	0 ... 100 % RH ± 1.0 % RH (0 ... 90 % RH) ± 1.7 % RH (90 ... 100 % RH) Vaisala HUMICAP® 180
Temperature measurement
	Measurement range HMT331 HMT333 HMT334/335/337/338 Accuracy at +20 °C (68 °F) Sensor	-40 ... +60 °C -40 ... +80 °C -70 ... +180 °C ± 0.2 °C Pt100 RTD 1/3 Class B IEC 751
Other variables available (depends on model)
	Dewpoint, temperature, mixing ratio, absolute humidity, wet bulb temperature, enthalpy, water vapor pressure.
Operating environment
	Temperature for probe for transmitter body with display Pressure HMT334 HMT338 HMT333/335/337	same as measurement ranges -40 ...+ 60 °C (-40 ... +140 °F) 0 ...+ 60 °C (+32 ... +140 °F) 0 ... 10 MPa (0 ... 100 bar) 0 ... 4 MPa (0 ... 40 bar) vapor tight
Inputs and outputs
	Operating voltage with optional power supply module Power consumption @ 20 °C (U in 24 VDC) RS-232 U out 2 x 0 ... 1 V/ 0 ... 5 V/ 0... 10 V I out 2 x 0 ... 20 mA V Analog outputs current output voltage output Digital outputs Menu languages	10 ... 35 VDC, 24 VAC 100 ... 240 VAC 50/60 Hz max. 25 mA max. 25 mA max. 60 mA 0 ... 20 mA, 4 ... 20 mA 0 ... 1 V, 0 ... 5 V, 0 ... 10 V RS-232, RS-485 (optional) English, French, Spanish, German, Japanese, Swedish, Finnish
Mechanics
	Probe cable diameter HMT333 other probes Material (housing) Housing classification	6.0 mm 5.5 mm G-AlSi 10 Mg (DIN 1725) IP65 (NEMA 4)

For complete specifications, please see the brochure or user guide in "Product Documentation".

Relative humidity measurement

Temperature measurement

Other variables available (depends on model)

Operating environment

Inputs and outputs

Mechanics