HTX01-C01/HTX02-C01/HTX03-C01 Interior Wall Mount RH Transmitter

Brand: Intempco Controls, Inc.

The Intempco HTX series humidity / temperature transmitters are designed for use in HVAC energy management.

The HTX01-C01 is an interior wall mount RH transmitter. The small off-white plastic enclosure is esthetic and takes up very little space. They are designed for mounting directly to walls or any flat surface.

The HTX02-C01 is a high performance low cost Interior/Exterior DUCT mount RH transmitter. The enclosure is Polycarbonate NEMA 4X and the probe is PVC with an HDPE porous filter.

They are designed for mounting directly into ventilation DUCTs.

The HTX03-C01 is a high performance low cost Interior/Exterior RH transmitter. The enclosure is Polycarbonate NEMA 4X and the probe is PVC with a HDPE porous filter.

They are designed for mounting directly on walls or support brackets inside or outside. Outside mounting requires protection form the elements.
Features
  • Low cost
  • Rugged design using solid state sensors
  • High accuracy (±3% over 5 to 90% RH)
  • 2-wire, loop-powered operation (4-20 mA output)
  • On-board zero and span adjustments
  • Temperature compensated humidity measurement
  • Factory calibrated
  • Temperature outputs available

Specifications

Accuracy

  • 0.1 % of Full Scale (Includes Effects of Linearity, Hysteresis & Repeatability)
  • System Accuracy: ± 3 % (5 to 95 % Relative Humidity Range)

Ambient Temperature Range

  • -40° to 85° C (-40° to 185° F)

Compensated Temperature

  • -20° to 60° C (-4° to 140° F)

Current

  • Sensor Break Indication: Downscale (< 3.5 mA)

Electrical Connectors

  • Via on Board Terminal Blocks, Accepts 18 to 24 AWG Size

Enclosure, Body Material

  • ABS - HTX01-C01
  • Polycarbonate - HTX02-C01, HTX03-C01
  • Polystyrene - HTX02-C01, HTX03-C01
  • PVC - HTX02-C01, HTX03-C01

Environmental Protection

  • IP20 - HTX01-C01
  • IP50 - HTX02-C01, HTX03-C01
  • IP64 - HTX02-C01, HTX03-C01
  • IP66
  • NEMA 4X - HTX02-C01, HTX03-C01

Humidity

  • Calibrated Range: 5 to 95 % Relative Humidity, Non-Condensing
  • Output: 0 to 100 % Relative Humidity

Hysteresis

  • ± 1 % Relative Humidity of Operating Humidity Span

Linearity

  • ± 1 % Relative Humidity

Linearization

  • ± 0.01 % of Full Scale

Mounting

  • Duct Mount - HTX02-C01 (Interior/Exterior)
  • Wall Mount - HTX01-C01 (Interior), HTX03-C01 (Interior/Exterior)

Operating Temperature

  • -40° to 85° C (-40° to 185° F) Non-Condensing (0 to 95 % Relative Humidity)

Output

  • 4-20 mA, Loop Powered 2-Wire
  • Open Circuit Detection - Over-Scale Limit: 27 mA
  • Open Circuit Detection - Under-scale Limit: 2.2 mA

Power Requirement

  • 40 mA - Maximum

Power Supply

  • 12-30 Vdc, Polarity Protected

Power Supply Effect

  • ± 0.002 RH/V (Negligible) from 12-30 Vdc
  • 0.02 %/V

Repeatability

  • ± 0.5 % Relative Humidity

Resistance

  • 1,000 ohms at 0° C (32° F) - DIN EN 60751 Class B, 2-Wire & 3-Wire
  • 100 ohms at 0° C (32° F) - DIN EN 60751 Class B, 2-Wire & 3-Wire

Reverse Polarity Protection

  • Diode Reverse Polarity Protected

Sensor, Probe Type

  • RTD

Span & Zero Adjustments

  • ± 10 %, 20-Turn Potentiometer
  • Rotary Potentiometers

Stability

  • Sensor Stability: ± 1 % Relative Humidity Typical at 50 % Relative Humidity in 1-Year

Storage Temperature

  • -40° to 85° C (-40° to 185° F) Non-Condensing

Supply Voltage

  • 12-30 Vdc, Polarity Protected

Temperature Effect

  • (± 0.0021 % Relative Humidity/ °C) × % Relative Humidity (From -20° to 60° C [-4° to 140° F])
  • 0 % Relative Humidity = < 0.005 % Relative Humidity/°C (Negligible)
  • 100 % Relative Humidity = 0.21 % Relative Humidity/°C

Temperature Range

  • -40° to 70° C (-40° to 158° F) - HTX02-C01, HTX03-C01
  • Temperature Output: -50° to 80° C (-58° to 176° F)

Thermal Drift

  • Long Term Drift: ± 0.05 % of Full Scale Per Year
  • Zero & Span Drift: ± 0.02 % of Full Scale/°C

Update Time

  • Warmup: 30 seconds

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