CO2 & Pressure Devices > CP11

Taking Measurements

The instrument starts measuring when it is on and refreshes the measurements every second. If the environment changes, it takes 30 seconds before the CO2 sensor reacts.

NOTE: Keep the instrument away from faces as exhalation can change the CO2 value (carbon dioxide).

CO2, Humidity and Temperature

Press MODE/RECALL to view the CO2 content. Users see the CO2 measurement in ppm on the main display. The bottom line of the display shows the real time clock.

Press MODE/RECALL to view the humidity. The bottom line of the display shows the real time clock.

Press MODE/RECALL to view the temperature. The bottom line of the display shows the real time clock.

Data Hold

When you are in the normal display, press HOLD/UP to stop the measurements. The “HOLD” symbol flashes at the top left of the LCD screen. All measurements taken so far remain unchanged. Press HOLD/UP again to cancel the “HOLD“ function.

NOTE: The hold function is not available in Min/Max/AVG mode.

Backlight

The backlight is activated by pressing any key for 10 seconds.

MIN, MAX, AVG

This instrument enables you to check the minimum, maximum, average and current values as soon as you press MIN/MAX/AVG/ENTER. By pressing MIN/MAX/AVG/ENTER in normal mode, the MIN, MAX, AVG and current values are shown one after the other. Press START/ESC to return to normal mode. In this mode, the corresponding measurements and time that this mode has been active are shown. This mode can be active for up to 18 hours.

You can change the parameter shown by pressing MODE/RECALL.

Alarm

The instrument sounds an audible alarm when the CO2 limit is exceeded. (You can set the respective limit values in the instrument’s settings.) It beeps (approx. 80 dB) when the CO2 content exceeds the set limit, and only stops again when the measurements drop below the set value. It beeps again when the value exceeds the limit again

Auto Power Off

The instrument switches itself off automatically when it has not been used for 20 minutes. To override this function, first switch the instrument off. Then press and hold ON/OFF/SET and HOLD/UP for 2 seconds and switch on the instrument until an “n“ appears.

Manual Recording

he instrument has a 99 data point memory. In normal mode or hold mode, press MEM/DOWN to start recording. The REC symbol and main display light up three times. Up to 99 measured values can be stored for later viewing directly on the instrument’s display. The log data contains all information on the parameters, not only of the one being shown at the moment. When the 99 data point memory is full, the message “FULL” appears on the screen. If you feel that the readings are changing too quickly, you can press HOLD/UP to stop the current recordings and then record the data manually. The function is not available in min/max mode.

Setpoint Memory

Press MODE/RECALL and hold in normal mode or in hold mode for more than 2 seconds until the Recall symbol appears. Press HOLD/UP or MEM/DOWN to scroll through the contents. The log sequence number is shown on the main LCD display first, then the readings. The time in memory mode shows how long readings were recorded.

Data Logging

The instrument can record the humidity, temperature and CO2 content automatically and monitor the environment over the long term. The memory has a capacity of 6000 points for every parameter. Users can set the sampling rate from 1 second to 4 hours, 59 minutes and 59 seconds. The factory defaults are 30 seconds.

To set the sampling rate while the instrument is on, press and hold ON/OFF/SET for more than 2 seconds to enter setting mode. Press HOLD/UP or MEM/DOWN to select the program P60 (rAtE) and press MIN/MAX/AVG/ENTER to start the program.

Press HOLD/UP or MEM/DOWN to select the hours, minutes and seconds of the sampling rate and press MIN/MAX/AVG/ENTER to confirm your selection. Press START/ESC to return to normal mode. When you have set the sampling rate, press and hold START/ESC for 2 seconds in normal mode to start the logging program. The REC symbol appears to show the logging status. The main LCD display shows the real time value. The bottom line of the display shows the real time clock.

Repeat the above to create another log. When the log memory is full, the message “FULL” appears on the screen. Press and hold START/ESC for 2 seconds to close the data log. The REC symbol goes out. Press MODE/RECALL to enter the mode of your choice. Except for the mode selection function, auto power off, min/max, manual recording, and the hold and memory function are not available during logging.

Operation