• Temperature and Humidity Transmitters

Temperature and Humidity Transmitters

for high performance HVAC applications


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The humidity and temperature transmitters Vaisala HUMICAP® HMW90 series for wall, measure relative humidity and temperature in indoor areas requiring a high level of accuracy, stability and reliability.

Very flexible, the HMW90 series offers a wide range of options and features. The display is protected by a sliding cover is blind or has a viewing window. Output options include special scales and calculated the following parameters: dew point, mixing ratio, enthalpy, wet bulb temperature, dew point depression and absolute humidity.

Ease and speed of installation
The HMW90 transmitters are quick and easy to install. The wiring is done by the back, which makes it easy to set up electronics and sensors after completing wiring. Access to configuration switches requires opening the housing. In standard models, the most common settings such units metric / non-metric, humidity settings / dewpoint and relay set point can be easily changed without special tools.

A wide range of calibration options
Calibration and adjustment on the site is exceptionally simple. The cover slides to reveal correction potentiometers for the one-point calibration of humidity and temperature settings without disturbing the measurement. The integrated display makes it clear and convenient adjustment instantly showing the effect of changes. Service connector allows two-point calibration with either a PC or with the portable instrument for measuring humidity and temperature HUMICAP® HM70.

The HMW90 transmitters incorporate a measurement module user replaceable and can be ordered as a spare part. This module comes with a calibration certificate. Calibration services are available at Vaisala service centers.

The cover slides to discover the correction potentiometers and service connector for recalibration.

Features / Benefits

  • Ease of installation, configuration and tuning on the site
  • Stability in the long term than the Vaisala HUMICAP® 180R sensor
  • Moisture output settings: relative humidity, dew point and mixing ratio, enthalpy, wet bulb temperature, dew point depression and absolute humidity
  • Full measuring range 0 ... 100% RH
  • Accuracy up to ± 1.7% RH
  • Special Output Scale setting available
  • A relay (only output voltage models)
  • UL V0 materials
  • Humidity and temperature module user replaceable
  • NIST traceable calibration (certificate included)

Typical applications

  • Museums and Archives
  • Production and shops
  • Data centers
  • Laboratories
  • Test environments

Models

TMW92T only2 son, current output
TMW93T only3 son, voltage output
TMW90T onlyconfigurable model
HMW92HR + T2 son, current output
HMW92DHR + T2 son, current output with display
HMW93HR + T3 son, voltage output
HMW93DHR + T3 son, voltage output with display
HMW90HR + Tconfigurable model

Performance

RH
Measuring range0 ... 100% RH
Precision 
Temperature range+10 ... +40 ° C (50 ... 104 ° F)
0 ... 90% RH± 1.7% RH
90 ... 100% RH± 2.5% RH
Temperature range-5 ... +10 ° C, +40 ... + 55 ° C (+23 ... +50 ° F, 104 ... + 131 ° F)
0 ... 90% RH± 3% RH
90 ... 100% RH± 4% RH
Stability in typical applications± 0.5% RH / year
Humidity SensorHUMICAP® 180R
Temperature
Measuring range-5 ... + 55 ° C (23 ... 131 ° F)
Precision
+20 ... +30 ° C (+68 ... +86 ° F)± 0.2 ° C (± 0.36 ° F)
+10 ... +20 ° C, +30 ... + 40 ° C
(50 ... 68 ° F, 86 ... 104 ° F)
± 0.3 ° C (± 0.54 ° F)
-5 ... +10 ° C, +40 ... + 55 ° C
(+23 ... +50 ° F, 104 ... 131 ° F)
± 0.5 ° C (± 0.90 ° F)
Temperature sensorDigital

Operating Environment

Operating temperatures-5 ... + 55 ° C (23 ... 131 ° F)
Storage temperatures-30 ... +60 ° C (-22 ... 140 ° F)
ComplianceComplies with standard EN61326-1 EMC,
electromagneticIndustrial Environment

Parts and accessories

Module humidity and temperatureHTM10SP
Temperature module (for T models only)TM10SP
Connecting cable to the portable measuring apparatus HM70219980
USB cable for PC connection219690

Mechanical characteristics

IP ClassIP30
Standard color of the housingWhite (RAL9003 *)
Optional colors housingBlack (RAL9005 *)
(Only configurable models)Gray (RAL7035 *)
 Light ivory (RAL1015 *)
Housing materialABS / PC, approved UL-V0
Output ConnectorScrew Terminals Size Maximum cable 2 mm2 (AWG14)
Service connector4-pin M8
Weight155 g
* The RAL code is only indicative, small color variations may occur

Inputs and outputs

Current output models
Outputs2 x 4 ... 20 mA loop powered
Loop resistance0 ... 600 Ω
Power supply20 ... 28 VDC 500 Ω load
10 ... 28 VDC at 0 Ω load
Isolation between output channels500 Vdc
Voltage output models
Outputs2 x 0 ... 5 V or 2 x 0 ... 10 V
Load resistanceMinimum 10 kW
Power supply18 ... 35 VDC 24 VAC 50/60 Hz ± 20%
Maximum consumption12 mA 25 mA with relay
Relay1 unit (maximum 50 VDC, 500 mA)
Service connectorRS-485 line for temporary use

Dimensions

Dimensions in mm