Technical Manual
|
Dräger Polytron
®
8000 Series
53
Calibration
2. Select
Calibration
>
Auto calibration
and confirm.
The message
please wait...
is displayed and the instrument automatically
performs the zero calibration.
In case of an O
2
sensor
Fresh air cal.
is displayed.
The Maintenance signal is transmitted by the analog interface, no alarm or
fault relays are switched and the symbol is displayed.
3. After a successful zero calibration, the span calibration is started.
The parameters for the gas are displayed, e. g.:
6)
Gas :
H
2
S
Unit
: ppm
Concentr.:
25
4. If the displayed parameters do not match the target gas, adjust the
parameters:
7)
a. Select
Gas
and confirm.
b. Select the calibration gas from the list and confirm.
c. Select
Unit
and confirm.
d. Select the unit of measurement from the list and confirm.
e. Select
Conc.
and confirm.
f. Set the concentration of the calibration gas.
5. If settings are correct:
a. Select
Next
and confirm.
A message like
Gas flow ON H
2
S
is displayed.
6. Apply calibration gas.
a. Set gas flow corresponding to the sensor used (see "Gas flow for
7. Select
Next
and confirm.
The current value is displayed
After 15 minutes without confirmation, the instrument reverts to the calibration
menu without performing a calibration.
8. Once the current value is stable, the instrument automatically performs the span
calibration.
9. After a successful calibration, the new current value and the message
Value
OK?
are displayed.
●
If not, select Redo and confirm to perform the calibration again.
●
If the value corresponds the target value, proceed.
10.Turn off gas flow and remove the calibration adapter from the sensor or
disconnect tubing.
11.Select
Accept value
and confirm to finish the calibration. The instrument returns
to the calibration menu.
6) Not applicable for all sensors (see "Display, analog interface and relay status", page 41).
7) Only possible for certain sensors.
