Wet Bulb Temperature Sensor 4 20ma

Hms82 outdoor humidity dew point wet bulb enthalpy and temperature sensor for hvac and cooling towers current loop 3 accuracy.

Wet bulb temperature sensor 4 20ma.

The hmt120 is intended for outdoor wet dry bulb measurements in hvac cooling tower applications. 4 channel 0 10v or 4 20ma analog input. Two linear outputs provide a 4 20ma signal for dew point wet bulb or enthalpy and a 4 20 ma signal for dry bulb. The 2 wire hms82 transmitter measures relative humidity and temperature in outside air osa.

Wall mounted humidity sensors hmw82. 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. Duct mounted humidity sensors hmd42. Using a capacitive rh sensor and an rtd temperature sensor the unit s microprocessor computes the dew point wet bulb or enthalpy.

At lower humidity the wet bulb temperature is lower than dry bulb temperature because of evaporative cooling. 2 binary inputs isolated optionally. Two options are available. Model wb4 wet bulb transmitters are rugged compact and ideally suited for monitoring wet bulb in building automation and process applications.

Optional outputs dew point wet bulb temperature and enthalpy can be easily selected by a single dip switch or can be. 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. 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.

Construction different materials react differently to different humidities so this temperature is needed when designing a building in different climates. The hmt120 is delivered with a weather shield for the transmitter unit to protect it from the outdoor elements. 2 channel temperature pt1000 resolution 0 01 c uncertainty 0 1 c. Kele is the leading supplier of building automation products.

Electronic humidity sensors such as hr03 xh20p hmd42 and hmw82 for all humidity controls. Wet and dry type humidity sensor pola sxps for use with pola hp models hp14 hp27 hp46 hp57. 2 digital s300 inputs for external sensors isolated output. The wet bulb temperature might not be a widely known measure but it has some valuable functions.

Wet and dry bulb temperature relative humidity resolution 0 1 uncertainty 1. Combined humidity and temperature sensors with twin 4 20ma output. Hmt120 wet bulb dry bulb transmitter for cooling towers current loop. Using a capacitive rh sensor and an rtd temperature sensor the unit s microprocessor computes the wet bulb.