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HS-D_2X Sensor Series
Duct Relative Humidity Transmitters with Optional Temperature Sensor, Nema 4X
Product Description
This document describes the hardware installation procedures for the HS-
D_2X Series humidity transmitters.
The HS-D_2X Series are duct humidity transmitters. They use a highly
accurate and reliable Thermoset-Polymer-based capacitance humidity
sensor and state-of-the-art digital linearization and temperature-
compensated circuitry to monitor humidity levels. The field replaceable
humidity sensor is encapsulated in a 60-micron HDPE filter at the end of
a 230 mm (9") S/S probe. An optional temperature sensor is available.
Available with RH accuracies of 2%, 3%, or 5%.
General Installation Requirements
Read these instructions carefully before installing and commissioning
the RH transmitter:
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Upon unpacking the product, inspect the contents of the carton for
shipping damages. Do not install damaged device.
Figure 1: HS-D_2X Series Humidity Transmitters.
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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
Avoid areas where corroding, deteriorating or explosive vapors,
fumes or gases may be present.
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.
Do not use in an explosive or hazardous environment, with
combustible or flammable gasses, as safety or emergency
stop devices or in any other application where failure of the
product could result in personal injury.
Take reasonable precautions to prevent electrostatic
discharges to the controller when installing, servicing or
operating the controller. Discharge accumulated static
electricity by touching a grounded object before manipulating
the controller.
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Table of Contents
Related Manuals for Distech Controls HS-D 2X Sensor Series
Summary of Contents for Distech Controls HS-D 2X Sensor 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-D_2X Sensor Series Duct Relative Humidity Transmitters with Optional Temperature Sensor, Nema 4X Figure 1: HS-D_2X Series Humidity Transmitters. Avoid areas where corroding, deteriorating or explosive vapors, fumes or gases may be present.
- Page 2 Relative Humidity Transmitter The Relative Humidity transmitter uses a capacitive-type humidity sensor and a microprocessor temperature compensation for reliable and accurate readings. NOTE: The humidity sensor used in these devices is static sensitive. Anti- static precautions should be followed to prevent damage to the sensor. Mounting Figure 2.2: Mounting Step 2 The transmitter should be installed directly into any air duct with a...
- Page 3 Wiring Dimensions • Deactivate the 24 Vac/dc power supply until all the connections are done for the device in order to prevent electrical shock or equipment damage. • Use 14-22 AWG (2.08 mm to 0.205 mm ) shielded wiring for all connections and do not locate the device wires in the same conduit as any wiring used to supply inductive loads such as motors.
- Page 4 ©, Distech Controls Inc. 2022 All rights reserved. Distech Controls is not responsible for damages or claims arising out of improper or careless installation or handling of its products. 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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