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Wall-Mounted CO2 Sensor

Emerson Wall-Mounted CO2 Sensor Installation guide

  • Hello! I have reviewed the Installation Guide for the Emerson CO2 Sensor 210-2000. This guide provides instructions for installing and using the sensor, including wiring details, mounting instructions, and specifications. The sensor measures CO2 concentration and temperature, and offers features such as a selectable range and self-calibration algorithm. Ask me anything about it!
  • What is the measurement range of CO2?
    What type of sensor is used?
    What is the operating temperature range?
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
Document Part # 026-4858 Rev 0 Page 2 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.
Installation
1. Remove the cover by pressing the tab on the bottom of the sensor while pulling outward on the bottom edge of the cover.
DISPLAY MODELS
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 Approvals
UL 916, European conformance CE: EN61000-6-2,
EN61000-6-3, EN61000 Series - industrial immunity, EN 61326-1
FCC Part 15 Class B, REACH, RoHS, RCM (Australia), ICES-003 (Canada)
Document Part # 026-4858 Rev 0 Page 3 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.
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
Document Part # 026-4858 Rev 0 Page 4 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.
5. With the sensor base fully installed, align the top cover to mounting tabs on top of the sensor base. Swing the cover
downward until it 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 location with the “Install This End Up” label positioned in the upper
right corner.
2. Wire the unit as shown (see the Wiring section on page 5).
3. Attach the front plate.
Document Part # 026-4858 Rev 0 Page 5 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.
Wiring
1. Use Belden #8771 shielded three-conductor cable or equivalent.
2. Connect the RED, BLACK, and WHITE wires to the screw terminals of the CO2 sensor’s connector as shown in the image
below.
3. For TEMP 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. RED wire not used for TEMP OUTPUT; clip and insulate. Connect the SHIELD wire to chassis
ground 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 tapped
transformer. Connect the other side of 24VAC output from transformer to the MultiFlex 0V input terminal used for CO2
OUTPUT signal. Do not use the MultiFlex or 16AI power transformer to power the C02 sensor.
6. Locate the input dip switch for the sensor point, and set to the OFF position (LEFT for MultiFlex, DOWN for 16AI).
Refer to the input board’s user manual for locations of the input dip switches.
LEGEND
1
Power
2
Common
3
Temp Output
9
CO2 Output
Document Part # 026-4858 Rev 0 Page 6 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.
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:
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The contents of this publication are presented for informational purposes only 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 Emerson is a trademark of Emerson Electric Co.
Document Part # 026-4858 Rev 0 Page 7 of 7
Display Icons:
The main screen displays a sensor values for CO2, temperature and Celsius/Fahrenheit.
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