■Temp and Ventilation Rates (Lower Display)
The Up/Down button (○
4/○
3) allows you to scroll through the Temperature and Ventilation Modes. When pressing the Up button, the
lower display will go through the following sequence: Temp°C -> Temp°F -> Vent Rate lps -> Vent Rate cfm/p
*Note: lps refers to Liter Per Second Per Person; cfm/p refers to Cubic Feet Per Minute Per Person
■Operation of Mode Adjustment
1. ALTI Mode:
1.1. Press the Mode Button (○
5), ALTI flashes
1.2. Press Mode (○
5) to alter between m (meters) and ft (feet).
1.3. Press Up/Down (○
4/○
3) to adjust the altitude (Step=100m/500ft)
1.4. Press the Enter Button (○
2), save or leave the ALTI Mode, return to UserMode
2. ALARM Mode
2.1.Adjust the alarm level
2.1.1. Press the Mode button (○
5), until ALARM flashes
2.1.2. Press Enter Button (○
2), “CO2” icon flashes
2.1.3. Press Up/Down(○
4/○
3) to adjust the alarm level (≧1,000 ppm, interval is ±100ppm;＜1,000ppm,interval is ±50 ppm)
2.1.4. Press the Enter (○
2), save the setting and return to UserMode.
2.2. Turn ON/OFF the ALARM
2.2.1. Press the Mode button (○
5), until “Speaker Icon” flashes.
2.2.2. Press Enter Button (○
2)
2.2.3. Press Up/Down (○
4/○
3) to turn on/off the ALARM,
2.2.4. Press the Enter (○
2), save the setting and return to UserMode.
3. OUTSIDE Mode
** Note: Ventilation Rate
Ventilate rate represents how much air is introduced into the indoor space from the outside. Low values indicate low ventilation rates and
potentially poor air quality. High levels indicate excessive ventilation and potential excessive energy usage. To obtain an accurate
measurement, reading should be taken 2~3 hours after occupancy has stabilized in a space or at a peak in daily CO2
concentrations. In indoor air quality control, CO2value is an indicator of ventilation rate. 400ppm (Parts Per Million) is the default CO2
concentration outside (according to ASHRAE: American Society of Heating, Refrigeration and Air conditioning Engineers)
3.1. Press the Mode button (○
5), until OUTSIDE flashes
3.2. Press Enter (○
2), show OUTSIDE, CO2and PPM flash
Press Up/Down (○
4/○
3) to adjust the reading
3.3. Press the Enter (○
2), save the setting and return to UserMode
After modification, the VENT Rate will change
4. CALI Mode
The CO2monitor has been calibrated in the factory. Sensor drift usually occurs in linearity. Please follow below steps.
4.1. If battery icon shows low power, please replace new batteries or use AC adapter
4.2. Press the Mode button (○
5), until CALI flashes
4.3. Press Enter (○
2), CALI shows on display
4.4. Adjust the lower display to ambient CO2value by Up/Down (○
4/○
3) Button.
4.5. Press Mode button (○
5) more than 10 sec., CALIBRATING flashes.
Calibration will be done after about 3 min and LCD will appear “PASS”. If LCD appears “FAIL”, please calibrate once again.
4.6. Press Enter (○
2), return to UserMode
5. DATA LOGGER Mode
The device has a built-in data logger, which can provide users the past CO2and temperature readings within the past 24 hours.
5.1. Press the Mode button (○
5), until DATALOGGER flashes
5.2. Press Enter (○
2), CO2and Temperature show up
Press Up/Down (○
4/○
3) to page up/down the reading.
5.3. Press the Enter (○
2), return to UserMode
6. MaxMin Mode
The device has a built-in MaxMin mode, which can provide users the Maximum and Minimum CO2readings since the device has last been
turned on.
6.1. Press the Mode button (○
5), until MAX MIN flashes
6.2. Press Enter button (○
2), MAX and MIN CO2reading alternatively shows.
6.3. “CLR” will flash if press Up/Down (○
4/○
3)
Press Enter (○
2), to CLEAR the MAX and MIN record.
6.4. Press Mode or enter (○
5), return to UserMode
