Veris Industries Humidity Sensors, HD Series HD2NMSTA12

INPUT POWER
Voltage Model* Class 2; 12 to 30 Vdc/24 Vac, 15 mA max.
mA Model Class 2; Loop powered 12 to 30 Vdc only,
30 mA max.
OUTPUT
Voltage Model 3-wire, observe polarity
mA Model 2-wire, not polarity sensitive (clipped and capped)
HUMIDITY
HS Element† Digitally profiled thin-film capacitive
(32-bit mathematics) U.S. Patent 5,844,138
Accuracy at 25°C from
10-80% RH**
(Multi-point calibration,
NIST traceable)
HD only: ±1% at 20 to 40% RH in mA output mode;
(multi-point calibration, NIST traceable)
All models: 2%, 3%, or 5% (specify)
Temperature Effect, Duct
Model
±0.1% RH/°C above or below 25 °C (typical)
Temperature Effect,
Outdoor Model
4 to 20 mA version: (0.0013x%RHx(T°C-25));
0-5V/0-10V versions: (0.0015x%RHx(T°C-25))–
(%RHx0.0008xabs(T°C-25))
Scaling 0 to 100% RH
Hysteresis 1.5% typical
Linearity Included in accuracy spec.
Reset Rate*** 24 hours
Stability  annually, for two years

 

TEMPERATURE
Optional Temp.
Transmitter Output
HO Transmitter Accuracy
HD Transmitter Accuracy
Digital, 4 to 20 mA (clipped & capped) or
0-5/0-10 V output
±1.3 °C (±2.3 °F) typical;
±0.5 °C (1.0 °F) typical
OPERATING ENVIRONMENT
Operating Humidity
Range
0 to 100% RH non-condensing
Operating Temp. Range -40 to 50 °C (-40 to 122 °F)