Vaisala HMT120/130 Humidity & Temperature Transmitters

Features

  • Accurate and reliable measurement with HUMICAP humidity sensor technology.
  • Interchangeable probe (easy field calibration).
  • Resistant to dust and most chemicals.
  • Enclosure IP65.
  • Traceable calibration certificate: 3 points for humidity, 1 point for temperature.
  • Temperature-only models TMT120 and TMT130 also available.
  • Suitable for cleanrooms and demanding HVAC and light industrial applications.
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Dpstar is a leading supplier of environmental measurement sensors for temperature, relative humidity, pressure, dew point, CO2, and other environmental condition monitoring for industrial process application and research. Since the ’90s, we earned a reputation as a trusted partner to our clients through our commitment and dedication. We are an authorized distributor and supplier of measuring sensors solutions from renowned manufacturers Vaisala. Vaisala is a global leader in environmental and industrial measurement. Building on 80 years of experience, Vaisala provides observations for a better world. Vaisala is a reliable partner for customers around the world, offering a comprehensive range of innovative observation and measurement products and services.

The HUMICAP HMT120 and HMT130 transmitters are suitable for cleanrooms, museums, laboratories, and data centers. Maintaining measurement traceability is easy due to field exchangeable intelligent measurement probes. These can be exchanged with minimal downtime and process disturbance. The humidity parameter options available are relative humidity, dew point/frost point, wet bulb temperature, enthalpy, absolute humidity, mixing ratio, vapor pressure, and saturation vapor pressure. The HUMICAP Humidity and Temperature Transmitters HMT120 and HMT130 incorporate the HUMICAP technology with humidity sensor HUMICAP 180R. Two options are available: 2-wire loop-powered or 3-wire voltage output configurations. The HMT120/130 is resistant to dust and most chemicals. The devices can be mounted outdoors using an installation kit and the Radiation Shield DTR502B.

Dimensions

Options

  • Humidity parameter options: relative humidity, dew point/frost point, wet bulb temperature, enthalpy, absolute humidity, mixing ratio, vapor pressure, and saturation vapor pressure.
  • 2-wire loop-powered or 3-wire voltage output configurations.
  • Optional LCD display.
  • USB cable is available for a PC connection for maintenance.
  • Wall-mounted or with a remote probe.
  • Constant output probe available.
  • Can be mounted outdoors using an installation kit and Radiation Shield DTR504A.

Benefits

  • Performance
    The HMT120 and HMT130 transmitters incorporate Vaisala HUMICAP humidity sensor technology that measures relative humidity accurately and reliably. HUMICAP sensors are resistant to dust and most chemicals. The HMT120 and HMT130 transmitter enclosure is optimized for use in cleanrooms. The smooth surface of the enclosure makes it easy to clean and the enclosure material is chosen to tolerate purifying agents. Furthermore, cabling can be done through the back wall of the transmitter.
  • Interchangeable Probe
    The HMT120 and HMT130 transmitters use a fully interchangeable relative humidity probe. The probe can be easily removed and replaced with a new one without having to adjust the transmitter, which allows for an easy and quick recalibration of the transmitter. The probe can be adjusted using one of the handheld meters as a reference. Also available is a constant output probe with fixed RH and T output for convenient inspection of the monitoring system and signal transfer line.
  • Available Options
    The HMT120 and HMT130 transmitters are available as wall-mounted or with a remote probe. For high-temperature applications or where space is limited, the remote probe is ideal. The optional LCD display shows the measurement results of selected parameters in selected units. The parameters are displayed simultaneously on two separate rows on the display.

Specification

Models
Model Measured parameters Output
HMT120 RH + T 2 analog outputs, 4 … 20 mA (loop-powered)
HMT130 RH + T 2 analog outputs, 0 … 1 V, 0 … 5 V, 0 … 10 V, or user-defined between 0 … 10 V
TMT120 T 1 analog output, 4 … 20 mA (loop-powered)
TMT130 T 1 analog output, 0 … 1 V, 0 … 5 V, 0 … 10 V, or user-defined between 0 … 10 V
Measurement performance
Relative humidity (1)
Measurement range 0 … 100 %RH
Accuracy (2) (3) At 0 … +40 °C (+32 … +104 °F) ±1.5 %RH (0 … 90 %RH)
±2.5 %RH (90 … 100 %RH)
At −40 … 0 °C and +40 … +80 °C
(−40 … +32 °F and +104 … +176 °F)		 ±3.0 %RH (0 … 90 %RH)
±4.0 %RH (90 … 100 %RH)
Factory calibration uncertainty at +20 °C (+68 °F) ±1.1 %RH (0 … 90 %RH)
±1.8 %RH (90 … 100 %RH)
Humidity sensor types HUMICAP 180R
HUMICAP 180V
Stability ±2 %RH over 2 years
Stability in typical HVAC applications ±0.5 %RH per year
Temperature
Measurement range −40 … +80 °C (−40 … +176 °F)
Accuracy over temperature range At +15 … +25 °C (+59 … +77 °F) ±0.1 °C (±0.18 °F)
At 0 … +15 °C and +25 … +40 °C
(+32 … +59 °F and +77 … +104 °F)		 ±0.15 °C (±0.27 °F)
At −40 … +0 °C and +40 … +80 °C
(−40 … +32 °F and +104 … +176 °F)		 ±0.4 °C (±0.72 °F)
Temperature sensor Pt1000 RTD Class F0.1 IEC 60751
Other output parameters (optional)
Dew point/frost point, wet bulb temperature, enthalpy, absolute humidity, mixing ratio, vapor pressure, saturation vapor pressure
(1) RH specifications excluding TMT120 and TMT130, which are T-only models.
(2) Including non-linearity, hysteresis, and repeatability.
(3) With HUMICAP 180V sensor, accuracy is specified only in operating temperature −20 … +80 °C (−4 … +176°F).
Operating environment
IP rating (transmitter body) IP65 (1)
Operating temperature of transmitter body, no display −40 … +60 °C (−40 … +140 °F)
Operating temperature of transmitter body with display −20 … +60 °C (−4 … +140 °F)
Operating temperature, HMP110 probe −40 … +80 °C (−40 … +176 °F)
Storage temperature −50 … +70 °C (−58 … +158 °F)
(1) IP65 for the HMP110 probe only when using stainless steel sintered filter (HM46670SP) or PTFE sintered filter (item code DRW244938SP).
Inputs and outputs
HMT120 and TMT120 2-wire transmitter (loop-powered)
Current output signals 4 … 20 mA
External loop voltage 10 … 30 VDC (RL = 0 Ω)
20 … 30 VDC (RL < 500 Ω)
HMT130 and TMT130 3-wire transmitter
Voltage output signals 0 … 1 V, 0 … 5 V, 0 … 10 V or userdefined between 0 … 10 V
Min. output resistance 1 kΩ
Serial output RS-485, non-isolated
Relay output 1 relay (max. 50 VDC, 200 mA)
Supply voltage 10 … 35 VDC
15 … 35 VDC (when output 0 … 10 V)
24 VAC (±20 %)
Current consumption at 24 VDC 8 mA, if relay closed 15 mA
Max. additional error caused by the analog outputs after calibration at +20 °C (+68 °F) ambient temperature ±0.1 % of FS output signal
Temperature dependence of the analog outputs ±0.005 % of FS output signal
Mechanical specifications
Weight 270 g (9.5 oz)
Probe cable lengths 3 m, 5 m, 10 m – up to 50 m (9.8 ft, 16 ft, 33 ft – up to 164 ft)
Display (optional) 128 x 64 resolution full graphics B&W display without backlight
Material Transmitter housing PBT plastic
Display window PC plastic
Probe body Stainless steel (AISI 316)
Probe grid filter Chrome coated ABS plastic
Connections Inputs and outputs Screw terminals 0.5 … 1.5 mm2 (AWG 20 … AWG 15)
Probe interface 4-pin M8 female panel connector
Compliance
EU directives EMC, RoHS
EMC compatibility EN 61326‑1, basic electromagnetic environment
CISPR 32 / EN 55032, Class B
Compliance marks CE, RCM
Spare Parts & Accessories
Probes Humidity and temperature probe HMP110 (1)
Humidity and temperature replacement probe HMP110R (1)
Constant output probe HMP110REF (1)
Sensors Standard humidity sensor HUMICAP180R
Catalytic humidity sensor for H2O2 HUMICAP180V
Sensor protection Plastic grid filter DRW010522SP
Plastic grid with membrane filter DRW010525SP
Stainless steel sintered filter HM46670SP
PTFE membrane filter with stainless steel grid ASM212652SP
PTFE sintered filter DRW244938SP
Probe installation Probe mounting clamps, 10 pcs 226067
Probe mounting flange 226061
Probe holder, 5 pcs ASM213382SP
Cables Probe cable 3 m (9.8 ft) HMT120Z300
Probe cable 5 m (16 ft) HMT120Z500
Probe cable 10 m (33 ft) HMT120Z1000
Probe cable 20 m (66 ft) HMT120Z2000
HM70 connection cable 211339
USB serial interface cable 219685
Transmitter protection and installation Radiation shield DTR504A
Rain shield with installation kit 215109
Duct installation kit 215109
(1) See separate order form.

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