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Document Part # 026-4858 Rev 0

Page 1 of 7

©2021 Emerson Digital Cold Chain, Inc. This document may be photocopied for personal use. 
Visit our website at www.climate.emerson.com for the latest technical documentation and updates.

Emerson specs a CO2 Sensor (P/N 210-2000) to be used in building 
control and anti-sweat control applications using the Emerson input 
boards. The CO2 sensor measures CO2, room temperature, and 
provides analog outputs.

The 210-2000 CO2 sensor is a non-dispersive infrared analyzer 
designed for measuring environmental CO2 concentration in 
ventilation systems and indoor spaces. Its measurement range of 
0-2000 or 0-5000 ppm covers the range required to monitor 
compliance with ASHRAE and other ventilation efficiency standards.

The LCD display is available to provide local indication of CO2 
concentration and facilitate the setup and calibration process. An 
adjustable setpoint relay is available for direct control and alarm 
applications. The microprocessor-based digital electronics and unique 
self-calibration algorithm improves long-term stability and accuracy.

Specifications

OPERATING ENVIRONMENT

Input Power

Class 2 (20 to 30Vdc), 24Vac 50 to 60 Hz

Analog Output

0 to 5V, Selectable 4 to 20mA, 0 to 10V

Operating Temp. Range

(32°F to 122°F) 0°C to 50°C

Operating Humidity Range

0 to 95% (non-condensing)

Housing Material 

High-impact ABS plastic

Terminal Block Torque

0.5 to 0.6 N-m (0.37 to 0.44 in-lbf )

IP Rating

IP 30

CO2 TRANSMITTER

Sensor Type

Non-dispersive infrared (NDIR), diffusion sampling

Output Range

0 to 2000/5000 ppm (selectable)

Accuracy

±30 ppm ±3% of measured value

Repeatability

±20 ppm ±1% of measured value

Response Time

<60 seconds for 90% step change

CO2 Wall-mounted Sensor

Wall-mounted CO2 Sensor

Installation Guide

Summary of Contents for 210-2000

Page 1: ...able to provide local indication of CO2 concentration and facilitate the setup and calibration process An adjustable setpoint relay is available for direct control and alarm applications The microprocessor based digital electronics and unique self calibration algorithm improves long term stability and accuracy Specifications OPERATING ENVIRONMENT Input Power Class 2 20 to 30Vdc 24Vac 50 to 60 Hz A...

Page 2: ... LCD 52mm 2 05 in segmented with 3 buttons Setpoint 0 10Vdc Temperature humidity or fan speed selectable Timeout override Display timeout Lockout override Touchscreen button lockout OVERRIDE Override Button Display models feature momentary to ground override button WIRING TERMINALS Terminal Blocks Screw terminals 18 24 AWG Screw Terminal Torque 0 2 N m 2 0 in lbF max COMPLICANCE INFORMATION Agency...

Page 3: ...for the latest technical documentation and updates 2 Position the sensor vertically on the wall 4 feet 1 5 m above the floor Place so that the Install This End Up statement on the board is in the upper right corner 3 Mount the backplate onto the wall using the screws provided 4 Wire the backplate Connect the wires to the screw terminals Do not over tighten the screws 1 2 ...

Page 4: ...t latches at the bottom 6 Installed the locking screw to secure cover in a closed position 7 The 400 ppm baseline calibration allows the sensor to be set at 400 ppm Push and hold the calibrator button for 3 to 5 seconds The LED will flash green Once the push button is released the calibration is complete and the LED is switched off Mounting 1 Mount the backplate on the wall in an appropriate locat...

Page 5: ...round near the MultiFlex board 4 For C02 OUTPUT wiring connect the BLACK wires to the 0V terminal of the input board Connect the WHITE wire to the SIG terminal of the input board Connect the RED wire as described in Step 5 Connect the SHIELD wire to chassis ground near the MultiFlex board 5 Connect the RED wire to one side of the 24VAC power output of the P N 640 0039 Class 2 isolated non center t...

Page 6: ...ite at www climate emerson com for the latest technical documentation and updates Operations Emerson wall mounted humidity sensors measure the levels of RH and temperature if equipped in the air inside of a room To maintain accurate functionality keep all pickup vents clear and free of dust debris etc Dimensions LCD Display Button functions ...

Page 7: ...and they are not to be construed as warranties or guarantees express or implied regarding the products or services described herein or their use or applicability Emerson reserves the right to modify the designs or specifications of such products at any time without notice Responsibility for proper selection use and maintenance of any product remains solely with the purchaser and end user 2021 Emer...

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