The company says its HMT230 transmitters are ± 1% rh accuracy transmitters designed to meet unique needs and applications. You can select output parameters (rh, Td, T, absolute humidity, mixing ratio, wetbulb temperature, enthalpy), temperature range, serial or analog output, type of sensor head, and more, says the company. Modules with cables and adjustable probe heads are available for wall or duct mount, small and pressurized spaces, and demanding high temperature applications (-40°F to 356°F), it says.

- Vaisala, Inc.

Woburn, MA