Instructions

CO260-en-GB_v1.0 8/17
7
Advanced Functions
Data Hold
Short press the H/ button to freeze the readings on the display. The "HOLD” icon flashes in the
top left of the display. Short press the H/
 button again to unfreeze the readings on the display.
Note: the HOLD function is not operational in Min/Max/Avg mode.
Display Backlight
The meter is equipped with a backlight for easy viewing in dimly lit areas. The backlight will
activate for 10 seconds by pressing any button.
MIN, MAX, STEL, TWA Recording
In normal operating mode, short press the MXMN/AV/ button to view the minimum,
maximum, weighted average, and current readings. With each short press of the MXMN/AV/
button, the meter displays the MIN, MAX, STEL, TWA, or current value along with elapsed timer,
in sequence. Short press the /ESC button to return to normal operating mode.
In MIN and MAX modes, the meter shows the lowest (minimum) or highest (maximum) reading
in the primary display.
In STEL and TWA modes, the main display shows the weighted average of readings for the past
15 minutes (STEL) or 8 hours (TWA). TWA and STEL mode are only operational in CO
2
mode.
In CURRENT mode, the primary display shows the current readings. The secondary display shows
the elapsed timer. Press the /ESC button to exit and return to normal operating mode.
NOTES:
1. If the meter is ON for < 15 minutes, the STEL value will be the weighted average of
readings taken since power on. Similarly, for the TWA mode when the meter has been
ON for < 8 hours, the display only shows a weighted average of the readings up to the
moment.
2. The CO260 requires at least 5 minutes calculating STEL and TWA. The display shows “----”
during the first 5 minutes from power ON.
3. While in HOLD mode, the STEL and TWA values will continue to update every 5 minutes.
4. Hold, Record, and Recall functions are not operational while in Min/Max/Avg mode.
5. TWA and STEL will function only in CO
2
mode
6. The unit of measure can be changed while in Min/Max mode.
Manual Data Recording
The CO260 has 99 memory locations for which to store readings one at a time.
1. While in normal operating mode or hold mode, short press the MEM/ button to store
a reading. The REC icon flashes on the display for approximately 3 seconds. The primary
display briefly shows the memory location.
2. Each measurement parameter is saved, not just the currently displayed parameter. (For
example, when recording CO readings, the CO
2
, %RH, and air temperature will also be
recorded).
3. Short press the H/ button to freeze the readings on the display before recording the
data if the readings change too quickly.