Wet/Dry
Bulb Transducers
The HT-WD-420 provides inexpensive yet very accurate rH
measurements over a wide temperature range. It connects
to two RTD sensors in a wet/dry bulb arrangement and outputs
4-20mA proportional to 0-100% rH. The board may be used
for rH measurements in industrial environment where high
temperatures and harsh environment preclude the use of other
instruments. It may also be used for enthalpy control and
in most accurate climate monitoring applications.
The
HT-WD-420 is microprocessor based using the signal from
two 3-wire RTD sensors (wet bulb and dry bulb) to calculate
the relative humidity value. The microprocessor utilizes
a scientific rH calculation algorithm that produces very
accurate data over a wide temperature range. (This algorithm
is a refined version of ASHRAE equations used originally
for the creation of Psychrometric Charts).
Wet/Dry
Bulb Transducers
The
HT-WD-420 is microprocessor based using the signal from
two 3-wire RTD sensors (wet bulb and dry bulb) to calculate
the relative humidity value. The microprocessor utilizes
a scientific rH calculation algorithm that produces very
accurate data over a wide temperature range. (This algorithm
is a refined version of ASHRAE equations used originally
for the creation of Psychrometric Charts).