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Duct-Mounted Humidity Transmitter

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The KMC Controls Model THE-1002 duct-mounted humidity transmitter is designed for use with automation systems in commercial buildings, hospitals, museums, or other facilities requiring accurate measurement of relative humidity and temperature. It transmits separate relative humidity (RH) and temperature signals for use in temperature, humidity, or enthalpy-based control applications. This transmitter now uses a state-of-the-art silicon CMOS chip sensor.

This provides much more durable and reliable performance than the older capacitive polymer sensor. Plus, it responds within seconds to changes in humidity with a very high degree of accuracy. Able to accept VAC or VDC supply voltage, the THE-1002 offers three different standard outputs, any one of which may be used per application. This reduces the need to stock multiple transmitters to accommodate several output equirements.

The THE-1002 also contains a thermistor for measuring duct temperature. The 10,000 ohm (@ 77° F) thermistor provides The THE-1002 also contains a thermistor for measuring duct temperature. The 10,000 ohm (@ 77o F) thermistor provides precise, stable temperature sensing. The sensor probe is filtered to reduce the possibility of contamination from airborne dirt and dust. An integral housing affords multiple 1/2" conduit knockouts for ease of wiring during installation.

Features: II 10,000 ohm thermistor for temperature sensing

  • Transmits separate temperature and humidity signals

  • Accepts 24 VAC or 28 VDC supply voltage

  • Three standard outputs

  • Filtered sensor probe

  • Supply Voltage 24 VAC -15%, 24 VAC -15%  24 VAC -15%, +20%  28 to 40 VDC

  • Supply Power 12.5 mA at 28 VDC

  • Humidity Element

  • 24 VAC -15%, +20%; 28 to 40 VDC

  • Supply Power% RH over the 10% to 90% RH range

  • Output Signal over 0 to 100% RH 0 to 5 VDC, 0 to 10 VDC, or 4 to 20 mA

  • Output Capacity 0-5 or 0-10 VDC capable of @ 25o C ±2% RH over the 10% to 90% RH range

Temperature Sensor
  • Type Type II thermisto0-5 or 0-10 VDC capable of driving 1,000 ohms or greater 4-20 mA (24 VAC or 28 VDC supply) 250 ohm min. to 650 ohm max.

  • (NTCC) 4.37%/° C @ 25° C

  • Dissipation 2 mW/° C Constant

  • Wire Size 18 to 22 AWG with a 250-foot length, maximum

  • Operating 40° to 120° F (4° to 49° C)

  • Shipping -40° to 140° F (-40° to 60° C)

  • Humidity 0 to 100% relative humidity, non-condensing


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