RH TT Duct - Data Sheet

The ACI Relative Humidity with Temperature Transmitter Duct Series utilizes a thermoset polymer
capacitive sensing element with a factory fitted hydrophobic filter to improve its moisture resistance.
The sensing elements multilayer construction also provides excellent resistance in applications
where dust, dirt, oils and common environmental chemicals are found. The RH duct sensors include
on board DIP switches which allow the user to select the desired output signal and can be powered
by AC or DC power sources. Single point field calibration can be performed by using the increment
and decrement calibration DIP switches to adjust your curve up or down in +/- 0.5% increments
with each toggle of the corresponding switches. These enhancements provide increased flexibility
and outstanding long-term reliability without the need to replace the sensors in the field. Duct
configurations feature either a NEMA 4X or NEMA 3R enclosure and a conformally coated circuit
board for increased moisture resistance in high humidity environments. NIST Calibration Certificates (Temperature and RH) are included for all
TTM RH part series.