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HS-OT_2X Transmitter Series
Outside Air Humidity and Temperature Transmitters, Nema 4X
Product Description
The HS-OT_2X outside humidity/temperature transmitter series uses a highly accurate and reliable Thermoset-Polymer-based
capacitance humidity sensor and Platinum RTD temperature sensor together with state-of-the-art digital linearization and temperature
compensated circuitry to monitor humidity levels. A hinged, gasketed weatherproof Polycarbonate enclosure ensures ease of
installation and protection from the elements.
General Installation Requirements
For proper installation and subsequent operation of each device, pay special attention to the following recommendations:
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Upon unpacking the product, inspect the contents of the carton for shipping damages. Do not install damaged device.
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Avoid areas where corroding, deteriorating or explosive vapors, fumes or gases may be present.
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Ensure that all equipment is installed according to local, regional, and national regulations.
Personal injury or loss of life may occur if you do not follow a procedure as specified.
Equipment damage or loss of data may occur if you do not follow a procedure as specified.
Take reasonable precautions to prevent electrostatic discharges to the controller when installing, servicing or operating
the controller. Discharge accumulated static electricity by touching one's hand to a well-grounded object before working
with the controller.
H a r d w a r e I n s t a l l a t i o n G u i d e
Figure 1: HS-OT_2X Transmitter Series
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Summary of Contents for Distech Controls HS-OT 2X Series
- Page 1 H a r d w a r e I n s t a l l a t i o n G u i d e HS-OT_2X Transmitter Series Outside Air Humidity and Temperature Transmitters, Nema 4X Figure 1: HS-OT_2X Transmitter Series Product Description The HS-OT_2X outside humidity/temperature transmitter series uses a highly accurate and reliable Thermoset-Polymer-based capacitance humidity sensor and Platinum RTD temperature sensor together with state-of-the-art digital linearization and temperature...
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Page 2: Mounting Instructions
Mounting Instructions Select a suitable mounting spot on an exterior wall where the sensor is best protected from direct exposure to sunlight, wind, etc. preferably on a north-facing wall. Do not mount the sensor near opening windows, supply/exhaust air louvres or other known air disturbances. - Page 3 Figure 4: Connecting Make wiring connections as per the illustrations in the Wiring section. Swing door closed until securely latched. For added security, two screws are provided that may be installed in the integrated screw tabs. See Figure 5. Figure 5: Closing...
- Page 4 Wiring • Deactivate the 24 Vac/dc power supply until all connections are made to the device to prevent electrical shock or equipment damage. • Use 14-22 AWG shielded wiring for all connections and do not locate the device wires in the same conduit with wiring used to supply inductive loads such as motors.
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Page 5: Specifications
Specifications Humidity Sensor Type Thermoset Polymer based capacitive Accuracy ±2, 3, or 5% RH, (5% to 95% RH) Measurement Range 0 to 100% RH Hysteresis ±1.5% RH maximum Repeatability ±0.5% RH typical Linearity ±0.5% RH typical Sensor Response 15 seconds typical Time Stability ±1% RH typical at 50% RH in 5 yrs. - Page 6 ©, Distech Controls Inc. 2019 All rights reserved. While all efforts have been made to verify the accuracy of information in this manual, Distech Controls is not responsible for damages or claims arising from the use of this manual. Persons using this manual are assumed to be trained HVAC specialist / installers and are responsible for using the correct wiring procedures and maintaining safe working conditions with fail-safe environments.
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