Wet Bulb Temperature Sensor 4 20ma

The hmt120 is intended for outdoor wet dry bulb measurements in hvac cooling tower applications.

Wet bulb temperature sensor 4 20ma.

At lower humidity the wet bulb temperature is lower than dry bulb temperature because of evaporative cooling. Snowmaking snow production needs low temperatures and when the humidity decreases the temperature rises. The hmt120 is delivered with a weather shield for the transmitter unit to protect it from the outdoor elements. Model wb4 wet bulb transmitters are rugged compact and ideally suited for monitoring wet bulb in building automation and process applications.

Duct mounted humidity sensors hmd42. The 2 wire hms82 transmitter measures relative humidity and temperature in outside air osa. 2 wire loop powered or 3 wire voltage output configurations. Two linear outputs provide a 4 20ma signal for dew point wet bulb or enthalpy and a 4 20 ma signal for dry bulb.

2 digital s300 inputs for external sensors isolated output. Two options are available. Using a capacitive rh sensor and an rtd temperature sensor the unit s microprocessor computes the wet bulb. 2 channel temperature pt1000 resolution 0 01 c uncertainty 0 1 c.

Combined humidity and temperature sensors with twin 4 20ma output. Hms82 outdoor humidity dew point wet bulb enthalpy and temperature sensor for hvac and cooling towers current loop 3 accuracy. 4 channel 0 10v or 4 20ma analog input. 2 binary inputs isolated optionally.

Electronic humidity sensors such as hr03 xh20p hmd42 and hmw82 for all humidity controls. The wet bulb temperature wbt is the temperature read by a thermometer covered in water soaked cloth wet bulb thermometer over which air is passed. Wet dry dual pt100 thermometer module with 4 to 20 ma outputs for high accuracy relative humidity measurement or humidity measurement in high temperature or constantly wet environments. At 100 relative humidity the wet bulb temperature is equal to the air temperature dry bulb temperature.

Two linear outputs provide a 4 20 ma signal for wet bulb and a 4 20 ma signal for dry bulb. Using a capacitive rh sensor and an rtd temperature sensor the unit s microprocessor computes the dew point wet bulb or enthalpy. Construction different materials react differently to different humidities so this temperature is needed when designing a building in different climates. Wet and dry type humidity sensor pola sxps for use with pola hp models hp14 hp27 hp46 hp57.

Hmt120 wet bulb dry bulb transmitter for cooling towers current loop. The vaisala humicap humidity and temperature transmitters hmt120 and hmt130 incorporate the vaisala humicap technology with humidity sensor humicap 180r. Wet and dry bulb temperature relative humidity resolution 0 1 uncertainty 1. Kele is the leading supplier of building automation products.