Setting the Volts/Amps Switch, Setpoint

Carbon Dioxide Sensor

Product Information Sheet

210-2000

Figure 3 - CO2 Sensor Reassembly

Setting the Volts/Amps Switch

The front of the circuit board has a switch that controls whether the analog output sends a signal as voltage (V) or milliamps (mA). To work with CPC I/ O boards, this switch should be set to voltage (the DOWN position). Verify this switch is in the DOWN position before operating the sensor.

Setting Up the CO2

Sensor Software

Before operating the sensor, you must use the LCD display and the three buttons on the front of the circuit board to set the sensor’s operating parameters. Figure 4 shows the keys on the circuit board and the setup screens. Use the ENTER key to cycle through the setup screens, and the + and - keys to adjust parameter values.

Figure 4 - CO2 Sensor Keys and Screens

Setpoint

If you are using the CO2 sensor’s relay for alarming or control, use the + and - keys to adjust the value of the set point. When the CO2 sensor’s reading is above this set point, the relay will energize. Press ENTER to save the setpoint value.

Altitude

To properly measure CO2 concentrations, you must specify the approximate altitude of the site. Use the + and - keys to select the number of feet above sea level closest to the site’s altitude. Press ENTER to save the altitude value.

CO2 Calibration

WARNING! Calibrating the CO2 sensor requires a gas calibration kit. DO NOT perform a calibration without this kit, or else the sensor will give erroneous readings.

All CO2 sensors are shipped pre-calibrated, and will only require calibration once every five years to ensure proper readings. Calibration requires a special gas kit available from CPC. Follow the instructions that come with this kit to calibrate the sensor. Otherwise, press ENTER to bypass this screen and continue setup.

210-2000 specifications

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