bedfront piCO+ Smokerlyzer, Operating Manual

Page: 12 / 24

12
piCO
+
Operating Manual
English
www.bedfont.com
3
2
4
1
1.5 l/m
1.0 l/m
0.5 l/m
1
2
Calibration
●
Instruments are calibrated before leaving
Bedfont.
●
Calibration reminders will
prompt the user to calibrate
the unit every six months
●
Double click the
●
The calibration gas required
is Bedfont 20ppm carbon monoxide in air.
●
Ensure that the fine control valve is in the
off position.
● Screw the fine control valve and flow
indicator assembly to the gas can. This is
best done by screwing the gas can into
the valve.
●
Double click on the cylinder
Icon
Bedfont calibration kit
1. Fine control valve
2. Flow indicator
3. Gas cylinder, 20ppm
CO in air
4. Calibration adapter and
tube
● Immediately open the fine control valve
and allow the gas to flow at 1 litre per
minute.
● To maintain this, adjust the flow so the
ball in the flow indicator remains at the
middle line.
● Allow the gas to flow through the
instrument for up to 1.5 minutes to
ensure accurate calibration, again
monitoring the rate of flow.
● As the 20ppm CO
calibration gas is applied,
the displayed ppm
reading will climb. After
1.5 minutes, or until no
further increase in the
reading is obtained, the
final measured value will
be shown and sampling
will cease.