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
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 ˝-inch conduit knockouts for ease of wiring during
installation.
Features:
·CMOS chip humidity sensor provides excellent linearity,
sensitivity, and reliability
·Type 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
Specifications:
Supply Voltage 24 VAC –15%, +20%; 28 to 40 VDC
Supply Power 0.75 VA at 24 VAC 12.5 mA at 28 VDC
Humidity Element
Output Range 0 to 100% RH
Sensing Accuracy @ 25° C ±2%
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 driving 1,000 ohms or greater 4–20 mA (24 VAC or 28 VDC supply)
250 ohm min. to 650 ohm max.
Temperature Sensor
Type Type II thermistor
Accuracy ±0.36° F (±0.20° C)
Resistance 10,000 ohm @ 77° F (25° C)
NTC 4.37%/° C @ 25° C
Dissipation 2 mW/° C Constant
Wire Size 18 to 22 AWG with a 250-foot length, maximum
Material ABS UL Flame Class 94
Weight 12 oz. (34 kg)
Temperature Limits
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
specifications and design subject to change without notice.
