System 450™ Series Modular Control Systems with Standard Control Modules Technical Bulletin
10
System 450 Compatible Sensors and Transducers
System 450 standard control modules are designed to operate with a variety of compatible sensors and
transducers. The System 450 compatible sensors and transducers cover a wide range of temperature, pressure,
and humidity conditions.
Note: System 450 compatible sensors consist of temperature sensors, humidity sensors, and pressure
transducers. The term sensor refers to all System 450 compatible input devices including transducers,
unless noted otherwise.
System 450 compatible sensors also come in a variety of styles and configurations, allowing you to select the
sensor or transducer that best fits your control system requirements. See Table 14 through Table 23 in Repair and
Ordering Information on page 55 for more information on System 450 compatible sensors for communications
control modules.
You can connect up to three sensors to a System 450 control module at the low-voltage terminal block. See Wiring
System 450 Components on page 36 for more information on System 450 sensor wiring terminals on control
modules. Refer to the System 450 module installation instructions and the sensor installation instructions
referenced in System 450 Overview
on page 3 for information on installing, wiring, operating, troubleshooting, and
replacing System 450 compatible sensors.
For each sensor in your control system, you must select the sensor’s corresponding Sensor Type when you set up
the sensors in the System 450 UI. A sensor’s corresponding Sensor Type determines the controlled condition, unit
of measurement, minimum differential, setup values, and ranges for each output that is set up to reference the
sensor.
See Table 2 on page 10 for information about Sensor Types, the corresponding output setup values and ranges,
sensor models, and transducer models used in standard System 450 control systems.
The System 450 control automatically designates the sensor connected to the Sn1 terminal and a common (C)
terminal as the Sn-1 sensor in the UI. The sensor connected to the Sn2 and a C terminal is designated Sn-2, and
the sensor connected to Sn3 and a C terminal is designated Sn-3. You set up each sensor in the corresponding
sensor setup screens in the UI.
Note: For a System 450 control system to operate properly, you must wire the correct sensor or transducer
model to the correct sensor input terminals on the control module and select the correct Sensor Type in the
corresponding Select Sensor Type screen in the System 450 UI.
See Setting up a System 450 Control System
on page 40 and Setting Up the Sensors and Transducers on page 43
for more information and procedures on setting up sensors and Sensor Types in the System 450 UI.
System 450 Sensors and Transducers for Standard Control Modules
Table 2 shows the Sensor Types, output setup values, value ranges, and product types for the temperature
sensors, humidity sensors, and pressure transducers that are compatible with System 450 standard control
modules.
Table 2: System 450 Sensor Types, Setup Values, and Sensor/Transducer Product Codes (Part 1 of 3)
Sensor
Type
Unit of Measurement
Value
(Condition/Units)
Effective
Sensing
Range
Range of
Usable
Values
1
Resolution
Increment
Value
Minimum
Proportional
or Control
Band
Sensor Product Type
Number
2
F F (Temperature/degrees) -46 to 255 -40 to 250 1 1 A99x-xxx
C C (Temperature/degrees) -43 to 124 -40 to 121 0.5 0.5 A99x-xxx
rH % (Humidity/%RH) 1 to 100 10 to 95 1 2 HE-67Sx-xxxxx
HE-67Nx-xxxxx
HE-68Nx-0N00WS
P 0.25 INWC (Pressure/in. W.C.) -0.250 to
0.250
-0.225 to
0.250
0.005 0.010 DPT2650-R25B-AB
P 0.5 INWC (Pressure/in. W.C.) 0 to 0.5 0.025 to 0.5 0.005 0.010 DPT2650-0R5D-AB
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