4.
4,11V, 50,4 hours of logging
with chosen interval.
Pump OFF
LOG Int.S
Log interval:
Adjust the log interval in seconds.
Choose between
16
, 30, 60, 120,
240
, 600, 900,
1200
, 1800,
3600
,
7200
second intervals. Use
the
Up
and
Down arrows
. The
bold
second inter-
vals are in phase with the CO
2
-sensors measuring
frequency. If a logging is initiated without *, the
logged measurements with these time constants
will be measured values (non predicted - *).
•
Battery symbol - initiate logging
The display to the right shows the battery vol-
tage (V) and how long the instrument can log
with the set log interval (hours until the memo-
ry is full). The battery life may be shorter.
By pressing Enter a logging is initiated. Start
once the star disappears to collect a measured
value. Longer log intervals can be chosen for
longtime logging, see (LOG Int.S). Use a USB
power supply to prevent power loss. See also
6.
Logging
.
•
PuP.
Pump:
Use the
Up
and
Down arrows
, to switch
between
ON/OFF.
It is also possible to switch
the pump on and off during a measurement. The
pump absorbs air and blows it into the Carbon
dioxide sensor. Refrain from breathing on the in-
strument as this may affect the CO
2
-measurement
even when the pump is switched on.
•
noti Fy
Notify:
ON
or
OFF
. The instrument will beep once for every thou-
sandth PPM. E.g. at 5300 ppm the instrument shall beep five times.
If the ppm rises, the beeps will sound in higher pitched tones, and
the backlight will turn on for five seconds. If the PPM is stable on the
same thousandth, the beeps will sound in the same pitch. If the PPM
drops, the beeps will also drop in pitch. The instrument waits for a
few minutes between every beep-sequence.
•
AdJ. 410
Adjust
: Adjust the CO
2
-sensor to show 410 ppm. Enable the pump
and absorb some fresh air. This is assumed to have 410 ppm CO
2.
This adjustment is done to prevent drift (offset) of the sensor.
•
Log interval
