Wet Bulb Temperature Sensor 4 20ma

The 2 wire hms82 transmitter measures relative humidity and temperature in outside air osa.

Wet bulb temperature sensor 4 20ma.

2 wire loop powered or 3 wire voltage output configurations. Hmt120 wet bulb dry bulb transmitter for cooling towers current loop. 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.

Hms82 outdoor humidity dew point wet bulb enthalpy and temperature sensor for hvac and cooling towers current loop 3 accuracy. Using a capacitive rh sensor and an rtd temperature sensor the unit s microprocessor computes the wet bulb. At lower humidity the wet bulb temperature is lower than dry bulb temperature because of evaporative cooling. Using a capacitive rh sensor and an rtd temperature sensor the unit s microprocessor computes the dew point wet bulb or enthalpy.

At 100 relative humidity the wet bulb temperature is equal to the air temperature dry bulb temperature. Snowmaking snow production needs low temperatures and when the humidity decreases the temperature rises. The wet bulb temperature might not be a widely known measure but it has some valuable functions. Wall mounted humidity sensors hmw82.

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. Two options are available. 2 binary inputs isolated optionally. Optional outputs dew point wet bulb temperature and enthalpy can be easily selected by a single dip switch or can be.

The hmt120 is delivered with a weather shield for the transmitter unit to protect it from the outdoor elements. 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. The vaisala humicap humidity and temperature transmitters hmt120 and hmt130 incorporate the vaisala humicap technology with humidity sensor humicap 180r. Combined humidity and temperature sensors with twin 4 20ma output.

Wet and dry bulb temperature relative humidity resolution 0 1 uncertainty 1. The hmt120 is intended for outdoor wet dry bulb measurements in hvac cooling tower applications. Duct mounted humidity sensors hmd42. Model wb4 wet bulb transmitters are rugged compact and ideally suited for monitoring wet bulb in building automation and process applications.

Two linear outputs provide a 4 20ma signal for dew point wet bulb or enthalpy and a 4 20 ma signal for dry bulb. Construction different materials react differently to different humidities so this temperature is needed when designing a building in different climates. 4 channel 0 10v or 4 20ma analog input. Two linear outputs provide a 4 20 ma signal for wet bulb and a 4 20 ma signal for dry bulb.