Contact Us Buy Now 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. 5-year warranty is valid for instruments purchased in 2021 and beyond. 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). The following models are available: 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 transmitter (with display), Modbus RTU communication TMW90 T transmitter, configurable analog output model HMW90 RH+T transmitter, configurable analog/digital model The HMW90 and TMW90 transmitters are available in two color options: standard white and black. View all our instruments for HVAC applications. Click here to download bid specs for USA. 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 + Show more 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. Watch the video HMW90 installation and calibration video Downloads Application Note: Measuring Temperature and Humidity in Data Centers (202.53 KB) Order Form: TMW90 Order Form (66.26 KB) Bid Specification: HMW95 Bid Specs, Wall Mount RH & T, 1.7% Accuracy, Digital Output (142.01 KB) Brochure: Wall Sensor as a Part of the Interior Design (337.02 KB) Customer case: Infosys chooses Vaisala's HVAC sensors (200.28 KB) Magazine Article: How can high quality humidity and temperature transmitters help improve your data center PUE (273.53 KB) Certificate: HMW90 BACnet Certificate BAC-0080-01 (120.92 KB) Datasheet: Vaisala HUMICAP® Humidity Sensors (286.61 KB) Datasheet: HMW90 Series Humidity and Temperature Transmitters Manual: Decorative Cover Printable Insert (717.45 KB) Application Note: How to choose the right parameter for humidity control in HVAC (1.41 MB) Brochure: HVAC transmitters catalogue (2.01 MB) All downloads Product Resources Common pitfalls when installing HVAC wall sensors Read more Customer Stories Customer case Vaisala probes facilitate rollout of environmentally friendly refrigeration Supermarkets all over Australia and New Zealand are benefiting from advanced carbon dioxide monitors as new natural refrigeration systems are... Read more Customer case 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... Read more Customer case 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... Read more Services Standard calibration Custom calibration Need support? Need to calibrate? Sign up for news Contact us
Customer case Vaisala probes facilitate rollout of environmentally friendly refrigeration Supermarkets all over Australia and New Zealand are benefiting from advanced carbon dioxide monitors as new natural refrigeration systems are... Read more
Customer case 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... Read more
Customer case 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... Read more