Wet Bulb Temperature Sensor 4 20ma

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 bulb temperature sensor 4 20ma.

At 100 relative humidity the wet bulb temperature is equal to the air temperature dry bulb temperature. Model wb4 wet bulb transmitters are rugged compact and ideally suited for monitoring wet bulb in building automation and process applications. 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. 4 channel 0 10v or 4 20ma analog input.

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. 2 channel temperature pt1000 resolution 0 01 c uncertainty 0 1 c. Wet and dry type humidity sensor pola sxps for use with pola hp models hp14 hp27 hp46 hp57.

Wall mounted humidity sensors hmw82. Wet and dry bulb temperature relative humidity resolution 0 1 uncertainty 1. Two options are available. Optional outputs dew point wet bulb temperature and enthalpy can be easily selected by a single dip switch or can be.

Kele is the leading supplier of building automation products. 2 digital s300 inputs for external sensors isolated output. Duct mounted humidity sensors hmd42. Combined humidity and temperature sensors with twin 4 20ma output.

Using a capacitive rh sensor and an rtd temperature sensor the unit s microprocessor computes the dew point wet bulb or enthalpy. The vaisala humicap humidity and temperature transmitters hmt120 and hmt130 incorporate the vaisala humicap technology with humidity sensor humicap 180r. Construction different materials react differently to different humidities so this temperature is needed when designing a building in different climates. The wet bulb temperature might not be a widely known measure but it has some valuable functions.

The 2 wire hms82 transmitter measures relative humidity and temperature in outside air osa. The hmt120 is delivered with a weather shield for the transmitter unit to protect it from the outdoor elements. Hmt120 wet bulb dry bulb transmitter for cooling towers current loop. Two linear outputs provide a 4 20 ma signal for wet bulb and a 4 20 ma signal for dry bulb.

The hmt120 is intended for outdoor wet dry bulb measurements in hvac cooling tower applications. 2 binary inputs isolated optionally. Hms82 outdoor humidity dew point wet bulb enthalpy and temperature sensor for hvac and cooling towers current loop 3 accuracy. 2 wire loop powered or 3 wire voltage output configurations.