Vaisala's HMT337 HUMICAP® Humidity and Temperature Transmitter is delivered in one of three configurations:
• Basic: non-warmed probe for moderate humidities
• With a warmed probe: for nearcondensing conditions and dew point measurement
• With a warmed probe and an additional temperature sensor: for near-condensing conditions and relative humidity measurement
True humidity readings in conditions of condensation
The Vaisala unique warmed probe provides fast and reliable measurement in environments where humidity is near saturation. The warming prevents condensation from forming on the sensor. As the probe is warmed, the humidity level inside it stays below the ambient level. With accurate temperature measurement, the ambient dewpoint can be calculated precisely. If the relative humidity value is needed, an additional temperature sensor is used. The measured ambient temperature provides the compensation for calculating relative humidity and other humidity parameters.
Many ways to install
A tight installation through a process wall can be achieved with Swagelok® fittings. Meteorological installation kits for outdoor installations and duct installation kits are also available.
Temperature measurement range: -70 ... +180 °C (-94 ... +356 °F)
Cable gland and AGRO HMP247CG
Swagelok fittings (NPT and ISO) for both RH and T probes
PC software + cable 215005
USB-RJ45 Serial Connection Cable 219685
Connection cable for HM70 211339