User's Guide CO2 Monitor Model CO200
Introduction Congratulations on your purchase of this Model CO200 Carbon Dioxide Meter. This meter measures CO2 level, air temp., humidity, date and time. With visible and audible alarms, this is an ideal instrument for indoor air quality (IAQ) diagnosis. This meter is shipped fully tested and calibrated and, with proper use, will provide years of reliable service. Meter Description Meter 1. CO2, Temp and RH sensors (rear) 2. LCD display 3. Controls LCD Display 1. CO2 concentration in ppm 2.
Operation POWER ON Plug in the adaptor and the meter turns on automatically with a short beep. If the voltage is too high or low, “bAt“ will display on the LCD and an LED will flash. The LCD will display current CO2, temp., humidity, date and time. The air quality level is displayed as well TAKING MEASUREMENT The meter starts measurements when powered on and updates readings every second. If the operating environment changes (ex. from high to low temp.
RELAY OUTPUT The meter is designed with a relay for connection to an external indicating or controlling device. When CO2 readings go over the upper limit the relay closes. The relay will open again when CO2 readings fall below the lower limit. The relay output port requires a 2.5mm STEREO phone jack plug. The relay is: 1A 30VDC/0.5A 125VAC. 1. AC adaptor input (5VDC) 2. Alarm Relay output 3.
P1.3 CO2 ALARM: BEEP ALARM P1.3 is used for setting the CO2 upper limit for the BEEPER ALARM level. The current set value will be blinking on the display. Press the ▲or MIN/MAX▼ button to increase or decrease the value. Each press adjusts in 100ppm increments. The alarm range is 1000 to 5000ppm. When the value has been set, press the SET button to confirm the limit and to proceed to P1.0. Press the ESC button to exit without saving the setting. P2.0 TEMPERATURE SCALE Press the ▲ button in P1.
P4.0 RESET Press the▲button in P1. 0 three times to access P4.0 to reset the meter to default settings. Press the SET and the meter will go to P4.1 with a blinking “No”. Press the ▲ to switch the status then press either the ▲ button to save the settings or the ESC button to exit without saving the settings. Default settings: Parameter Default P1.1 700ppm P1.2 1000ppm P1.3 1000ppm P2.1 C ° P4.1 No 6 CO200-EU-EN v1.
Calibration CO2 CALIBRATION The meter is calibrated to a standard 400ppm CO2 concentration at the factory NOTE: When the accuracy becomes a concern or after a year of use, return the meter to Extech for a standard calibration. CAUTION: Do not calibrate the meter in an atmosphere of unknown CO2 concentration. ABC (Automatic Baseline Calibration) ABC (Automatic Baseline Calibration) establishes a baseline calibration to eliminate the zero drift of the infrared sensor.
Specifications Function Range Resolution Accuracy CO2 0 to 9999ppm 1ppm ±(5%rdg +50ppm) Temperature -10 to 60°C 14 to 140°F 0.1° ±0.6°C/0.9°F Humidity 0.1 to 99.9% 0.1% ±3%(10 to 90%) ±5%(< 10% or > 90%) Display LCD Sensor Type CO2: NDIR (non-dispersive infrared) technology Humidity: Capacitance sensor; Temperature (air): Thermistor Response CO2: <2min for 90% step change Temp: <2min for 90% step change %RH: <10min for 90% step change Relay 1A 30VDC/0.
TROUBLESHOOTING Can’t power on: Check whether the adaptor is properly plugged in. Slow response: Check whether the air flow channels on the rear of the meter are blocked. "BAt” and green LED keep flashing: The adaptor output voltage is too high or too low. Please use the adaptor with correct output.
CO2 Levels and Guidelines Non-Enforced Reference levels: 250 - 350 ppm – background (normal) outdoor air level 350- 1,000 ppm - typical level found in occupied spaces with good air exchange. 1,000 – 2,000 ppm - level associated with complaints of drowsiness and poor air. 2,000 – 5,000 ppm – level associated with headaches, sleepiness, and stagnant, stale, stuffy air. Poor concentration, loss of attention, increased heart rate and slight nausea may also be present.
