Models KHR, KHD, and KHO Humidity Transmitters are specifically
designed for use in HVAC/BAS applications.
They come in room (KHR), duct (KHD), and OSA (KHO)
mounting styles.
Sensor Precon HS-2000 capacitive
Accuracy ±2% or ±3% RH from 0° to 70°C, 5% to
95% RH noncondensing
Temp effect Temperature compensated with
<0.008% RH per °C
Long-term stability <±0.5% drift per year
Output humidity 4-20 mA = 0% to RH, two-wire,
loop-powered
Supply voltage 8.5-28 VDC
Ambient temp -22° to 185°F （-30° to 85°C）
Max load impedance （Supply voltage - 8.5 VDC） /0.02,
775Ω @ 24 VDC
Enclosure
Room White plastic, UL94HB
Duct Metal handy box
（weatherproof box optional）
OSA NEMA 3R plastic box
Probe
Sensing Interchangeable; no need to re-calibrate or
remove mounting box
Room HSR, plug-in module under cover
OSA HSO, 1/2" aluminum tube, plug-in wiring harness,
40 micron stainless steel sintered filter
Duct HSD, 1/2" aluminum tube with wiring plug and
expanded Teflon® filter
Options N.O. button, RJ11 comm jack, LED-24V
Optional temp
Thermistor Type 3, 21, 22, 24, 27,42
RTD （Platinum） Type 81, 85, 91
Connections Screw terminals
Weight
Room/OSA 0.2 lb （.084 kg）
Duct 1 lb （0.45 kg）
