The ultra-fast Series HU Transmitter provides a stable, repeatable, and accurate means of measuring humidity or both temperature and humidity in the harshest of environments The polymer capacitance sensor is not affected by condensation, fog, high humidity or contaminants. Sophisticated integrated circuits provide a fully conditioned and temperature compensated 4-20 mA output signal. For humidity or temperature/humidity control, a rugged NEMA 4X (IP56) fully gasketed duct mount enclosure is available or for monitoring space humidity, choose the ABS plastic wall mount enclosure. Units also feature non-interacting zero and span adjustments, short circuit protection and reverse polarity protected output.

SPECIFICATIONS
Relative Humidity Range: 0 to 100% RH.
Temperature Range: -30 to 130°F (-35 to 55°C).
Accuracy: ±2 RH (includes non-linearity and non-repeatability); ±0.12 @ 0°C.
Hysteresis: ±1%.
Temperature Limits: -30 to 130°F (-35 to 55°C).
Operating Relative Humidity: 10 to 90% RH, non-condensing.
Compensated Temperature Range: -30 to 130°F (-35 to 55°C).
Power Requirements: 12-40 VDC.
Output Signal: Humidity, 4-20 mA, 2-wire; Temp (Model HU1142): pt 1000O RTD.
Zero and Span: ±15%, non-interactive.
Response Time: Temp: 60 msec; RH: 30 sec.
Loop Resistance: 3000O max. @ 40 VDC.
Electrical Connections: Unpluggable screw terminal block.
Conduit Connection: 1/2" (22.3 mm) knockout.
Enclosure Rating: Duct Mount: Cold-Rolled Steel, NEMA 4 (IP56) or Wall Mount: ABS plastic.
Temperature Sensor: Pt 1000O RTD.
Drift: ±2 RH over 2 years.
Weight: Duct Mount: 1.0 lb (.45 kg); Wall Mount: 0.5 lb (.25 kg).
Agency Approvals: CE.