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Humidity - Duct

  • 2% or 3% accuracy (NIST certification options)
  • 0-5/10V and 4-20mA RH/Temp (thermistors optional)
  • LCD with field calibration menu
  • Field replaceable RH element

 

Applications

  • HVAC room humidity and temperature measurement and control
  • Replaceable element is ideal for difficult environments such as swimming pools

Description

The HD Series is designed with both the engineer and field technician in mind. The HD Series combines excellent stability with reliable operation in 2% or 3% RH accuracy options. Optional temperature transmitters, RTDs and thermistors add further flexibilty when ordering. The standard LCD and field replaceable elements make the intitial installation and future service a breeze.

Product     Price   Quantity
HD-2A DUCT RH, 2% ACCURACY   $ 306.26
HD-2B DUCT RH, 2% ACCURACY, WITH TEMPERATURE TRANSMITTER   $ 317.51
HD-2C DUCT RH, 2% ACCURACY, WITH 100PT (385) THERMISTOR   $ 351.26
HD-2D DUCT RH, 2% ACCURACY, WITH 1000PT (385) THERMISTOR   $ 351.26
HD-2E DUCT RH, 2% ACCURACY, WITH 10K TYPE 2 THERMISTOR   $ 336.26
HD-2F DUCT RH, 2% ACCURACY, WITH 10K TYPE 3 THERMISTOR   $ 336.26
HD-2G DUCT RH, 2% ACCURACY, WITH 10K T3 THERMISTOR & 11K SHUNT   $ 336.26
HD-2H DUCT RH, 2% ACCURACY, WITH 3K THERMISTOR   $ 336.26
HD-2I DUCT RH, 2% ACCURACY, WITH 2K2 THERMISTOR   $ 336.26
HD-2J DUCT RH, 2% ACCURACY, WITH 1K8 TAC THERMISTOR   $ 336.26
HD-2K DUCT RH, 2% ACCURACY, WITH 20K NTC THERMISTOR   $ 336.26
HD-2L DUCT RH, 2% ACCURACY, WITH 100K THERMISTOR   $ 336.26
HD-3A DUCT RH, 3% ACCURACY   $ 282.86
HD-3B DUCT RH, 3% ACCURACY, WITH TEMPERATURE TRANSMITTER   $ 294.11
HD-3C DUCT RH, 3% ACCURACY, WITH 100PT (385) THERMISTOR   $ 327.86
HD-3D DUCT RH, 3% ACCURACY, WITH 1000PT (385) THERMISTOR   $ 327.86
HD-3E DUCT RH, 3% ACCURACY, WITH 10K TYPE 2 THERMISTOR   $ 312.86
HD-3F DUCT RH, 3% ACCURACY, WITH 10K TYPE 3 THERMISTOR   $ 312.86
HD-3G DUCT RH, 3% ACCURACY, WITH 10K T3 THERMISTOR & 11K SHUNT   $ 312.86
HD-3H DUCT RH, 3% ACCURACY, WITH 3K THERMISTOR   $ 312.86
HD-3I DUCT RH, 3% ACCURACY, WITH 2K2 THERMISTOR   $ 312.86
HD-3J DUCT RH, 3% ACCURACY, WITH 1K8 TAC THERMISTOR   $ 312.86
HD-3K DUCT RH, 3% ACCURACY, WITH 20K NTC THERMISTOR   $ 312.86
HD-3L DUCT RH, 3% ACCURACY, WITH 100K THERMISTOR   $ 312.86
HSD-2 HD SERIES RH REPLACEMENT SENSOR, 2% ACCURACY   $ 159.00
HSD-3 HD SERIES RH REPLACEMENT SENSOR, 3% ACCURACY   $ 135.50

CLICK ON LISTED ITEM FOR SPECIFICATIONS.

List prices shown; trade pricing appears on orderpad for Senva Trade Accounts.
For qualified trade pricing, please contact us at 866-660-8864.
Oregon has no sales tax.

Versatile

  • 2% or 3% RH versions with field replaceable sensor
  • Switch selectable 5V/10V and 4-20mA RH/T transmitter outputs
  • Thermistor outputs for temperature optional

Easy to maintain

  • Field calibration. LCD and push-button menu allows easy adjustment of calibrated RH value as needed to maintain certification.
  • Field replaceable sensor—without disturbing conduit

Superior RH sensing

  • On-board temperature compensation for RH. Eliminates temperature coefficient errors and achieves an excellent measurement accuracy as well as high repeatability and offset stability. 
  • State of the art testing facilities. Certification options: 8-point (NIST traceability—consult factory)

Quality

  • Industry leading 7-year warranty/ 2-year replaceable element warranty 
SPECIFICATIONS
Power Supply 0-5V or 0-10V operation 12-30VDC/24VAC(1), 15mA max.
4-20 mA operation 12-30VDC, 30mA max.
Outputs RH% and Temperature 3-wire 0-5/10V(4) (jumper) or 2-wire 4-20mA, selectable
Output scaling RH% 0-100% RH
Temperature 32-122° F or -40-140° F (jumper)
Thermistor/RTD Optional  See ordering table
Media filter   PBT with water-vapor permeable membrane
Relative Humidity Accuracy 2% models, +/-2% over 10 to 90%RH range
3% models, +/-3% over 20 to 80%RH range
Resolution 0.05%RH
Hysteresis +/-1%RH
Non-Linearity factory linearized <1%RH
Temperature coefficient fully compensated by on-board temp sensor
Response time (2) 30s
Output update rate 2s
Operating range 0 to 100%RH (non-condensing)
Long term drift <0.5%RH per year
Operating conditions (3) -20° C to 60° C @ RH>90%
-20° C to 80° C @ RH=50%
Temperature Accuracy (-20° C to 70° C range) 2% models, <+/-1° C; 0.5° C typ @ 25° C
3% models, <+/-2° C; 0.5° C typ @ 25° C
Resolution 0.01° C
Repeatability +/-0.1° C
Response time (2) 30s
Output update rate 2s
Operating range -40° C to 120° C
Enclosure Materials ABS/Polycarbonate
  Dimensions 4.0"h x 4.4"w x 2.1"d (+6.8" probe)
  1. One side of transformer, secondary is connected to signal common. Dedicated transformer is recommended.
  2. Time for reaching 63% of reading at 25° C and 1 m/s airflow.
  3. Long term exposures to conditions outside normal range at high humidity may temporarily offset the RH reading (+3%RH after 60 hours.)
  4. 15-30VDC/24VAC power supply voltage required for 10 volt output.