Humidity and Temperature Transmitter Series HMW90

HMW90 Series Humidity and Temperature Transmitters

HMW90D and the sliding cover

White and black enclosures of the HMW90

Example of a decorative cover for GMW90 and HMW90 with a cafeteria sign

Example of a decorative cover for GMW90 and HMW90 on a brick wall

An example of a decorative cover for GMW90 and HMW90 with wallpaper

Decorative covers for GMW90 and HMW90

Humidity and Temperature Transmitter Series HMW90

±1.7%RH Wall Transmitters with a Certificate for Demanding HVAC

Typical applications are include museums and archives, production and warehouse facilities, data centers, laboratories, and testing environments.

The HMW90 series measures relative humidity and temperature in indoor environments, where high accuracy, stability, and reliable operation are required. The HMW90 is a flexible product family with a variety of options and features, both analog and digital output models are available. The sensors are exceptionally easy to configuration, install, and adjust in the field. Calculated humidity parameters (Td, x, h, Tw, a, T-Td).

BACnet certified by the European Certification Body.

View all our instruments for HVAC applications.

Click here to download bid specs for USA.

Watch the video

View this HMW90 installation and calibration video.

Key Benefits

Two output choices

Both analog and digital output models available.

Easy to use

Exceptionally easy configuration, installation, and field adjustment.

Easy maintenance

Field exchangeable measurement modules for easy maintenance.

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Overview

Wall-mounted Vaisala HUMICAP® Humidity and Temperature Transmitter Series HMW90 includes the following models:

TMW92 T transmitter, current output
TMW93 T transmitter, voltage output
HMW92(D) RH+T transmitter, current output (with display)
HMW93(D) RH+T transmitter, voltage output (with display)
HMW95(D) RH+T digital (BACnet, Modbus) transmitter (with display)
TMW90 T transmitter, configurable analog output model
HMW90 RH+T transmitter, configurable analog/digital model

The HMW90 Series was complemented with four new models: TMW92 and TMW93 temperature transmitters for applications where only temperature measurement is needed and the configurable HMW90 and TMW90 for special scalings. The HMW90 and TMW90 transmitters are available in two color options: standard white and black.

Features

Analog and digital outputs

Easy installation, configuration, and field adjustment

Humidity parameter options: relative humidity, dew point, mixing ratio, enthalpy, wet bulb temperature, dew point depression, and absolute humidity

Full 0 … 100%RH measurement range

Accuracy up to ±1.7%RH

User exchangeable humidity and temperature module

Traceable calibration, certificate included

Available in two colors

Details

Specifications

Datasheet

HMW90 datasheet1.85 MB

Documents

Application Note

Challenges in HVAC CO2 Measurement102.96 KB

Digital HVAC Sensors Save Time and Energy167.55 KB

Humidity and Condition Monitoring for Data Centers150.27 KB

Increased human comfort from optimal indoor air humidity189.99 KB

Good Indoor Air Quality Leads to Good Decisions2.66 MB

Humidity and Condition Monitoring for Data Centers150.27 KB

How to choose the right parameter for humidity control in HVAC1.41 MB

Brochure

Vaisala Humidity, Temperature, and CO2 Instruments for HVAC Applications1.65 MB

Wall Sensor as a Part of the Interior Design337.02 KB

Certificate

HMW90 BACnet Certificate BAC-0080-01120.92 KB

Datasheet

HMW90 datasheet1.85 MB

Manual

Decorative Cover Printable Insert717.45 KB

Decorative Cover Quick Guide in English2.16 MB

HMW90 Series User's Guide in English1.97 MB

HTM10 and TM10 Quick Guide in English382.29 KB

XMW90 Series BACnet PICS in English304.41 KB

Order Form

HMW90 Order Form75.45 KB

TMW90 Order Form66.44 KB

Technology Description

Vaisala HUMICAP Sensor for Measuring Relative Humidity274.38 KB

Success Story

Infosys Chooses Vaisala's HVAC Sensors318.78 KB

Presentation

HVAC Product Family Presentation2.94 MB

Magazine Article

Article published in REHVA 5-2018 - How to choose the right parameter for humidity control in HVAC730.81 KB

Stories

Field Maintenance of HVAC Humidity and CO2 Sensors

Blog | Feb 06th 2019

Field Maintenance of HVAC Humidity and CO2 Sensors

Anything worth measuring is worth measuring right, and to do that periodic calibration is essential. In HVAC, the primary reason to measure CO 2...

Which Factors Can Cause Drift in Relative Humidity

Blog | Jan 16th 2019

What Causes Drift in Relative Humidity Sensors?

All gases in the environment will interact with a humidity sensor and potentially cause drift. Water needs to get in and out of the sensor,...

How to Choose the Right Parameter for Humidity Control in HVAC

Blog | Nov 21st 2018

How to Choose the Right Parameter for Humidity Control in HVAC

Most people working in the HVAC field are familiar with using relative humidity (RH) as the default control parameter for humidity measurement....

Humidity Control

Blog | Oct 25th 2018

Relative Humidity – What Is It And Why Is It Important?

The basics Put simply, relative humidity (RH) is a measure of the water vapor content of air. More explicitly, it is the amount of water vapor...

Infosys Head Office in Bengaluru, India. Photo courtesy of Infosys.

Success Story | Jun 11th 2018

Infosys Monitors Indoor Air with Vaisala’s HVAC Sensors

Best Quality Indoor Air with Vaisala's HVAC Sensors Infosys is the second largest Indian IT consulting company with 200,000 plus employees and...

Vaisala keeps data centers cool

Success Story | Jun 01st 2017

Keeping Data Centers Cool

Increasing demand for data processing and storage capacity has led to major companies investing in new facilities that provide web-based...

Services

Standard Calibration

Custom Calibration

Events

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