Delta OHM HD37AB1347, Руководство пользователя

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Confirm with ENTER. The following screen will appear:
PROBE CALIBRATION
CO CALIBRATION
1) Cal zero
2) Sensitivity set
▼▲
select
<ESC> exit/cancel
<ENTER> confirm
Confirm with ENTER. The following screen will appear:
PROBE CALIBRATION
CO CALIBRATION
CAL ZERO
Cal zero 0 ppm
<ESC> exit/cancel
<ENTER> confirm
•
Wait about 15 minutes before continuing.
•
Supply the gas adjusting the bottle flow meter to get a constant flow from 0.1 to 0.2 l/min.
•
Press ENTER and wait the two minutes necessary for calibration without changing the
working conditions.
•
At the end, close the bottle spigot and remove the cap from the CO sensor.
•
Insert the protection grid.
Replacement of the CO sensor:
In normal usage conditions, the CO sensor has an average life longer than 5 years. If you need to
replace the CO sensor, order a new sensor (code
ECO-SURE-2E CO ).
To replace the CO sensor, follow this procedure:
1. Switch the instrument off.
2. On the P37AB147 probe, open the
sensor-holder small door using a
screwdriver and extract the
exhausted CO sensor.
3. Take a new CO sensor and note
down the number printed on the
edge that indicates its nA/ppm
sensitivity.
4. Insert the new sensor electrodes in
the terminals.
5. Turn the instrument on, and wait
for at least 5 minutes so as to
stabilize the measurement.