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Calibration
Polytron 5100 EC-specific
It is not possible to zero calibrate Oxygen (O
therefore this function is not displayed in the transmitter
menu.
Polytron 5200 CAT-specific
Sensors must not be calibrated with pure nitrogen. Catalytic
sensors need oxygen to work properly.
Polytron 5720 IR-specific
For Polytron 5720 IR (with PIR 7200 to detect carbon
dioxide), only Nitrogen or Synthetic Air without any CO
content may be used for a zero calibration.
9.3.1 Performing zero calibration
Prerequisites:
– Sensor has finished the warm-up phase
– Calibration is prepared.
All instruments except Polytron 57x0 (IR)
Perform zero calibration:
1. Select -0- Adj and confirm with [OK]
The Maintenance signal is transmitted by the analog
interface, no alarm or fault relays are switched.
The display will show the current value blinking (e.g.
2).
2. Apply synthetic air or nitrogen, if ambient air cannot be
used.
a. Set gas flow corresponding to the sensor used (see
"Gas flow for calibrations", page 15)
After the test gas has been applied to the sensor for 3
minutes and the displayed value is stable perform
calibration.
3. Use [UP] / [DOWN] to adjust the value to 0.
4. Acknowledge with [OK]; the instrument will return to the
main menu.
The zero point is calibrated.
5. Turn off gas flow and remove the calibration adapter from
the sensor or disconnect tubing.
Polytron 57x0 (IR)-specific
Perform zero calibration:
1. Select -0- Adj and confirm with [OK]
The Maintenance signal is transmitted by the analog
interface, no alarm or fault relays are switched.
The display will show 'walking dashes' and then toggle
between 'CAL' and the current value (e.g. '0.1').
2. Apply synthetic air or nitrogen, if ambient air cannot be
used.
a. Set gas flow corresponding to the sensor used (see
"Gas flow for calibrations", page 15)
After the test gas has been applied to the sensor for 3
minutes and the displayed value is stable perform
calibration.
16
3. Tap [OK].
If the calibration was successful, the display will toggle
) sensors,
2
– If [OK] is not acknowledged within approximately 5
– If [UP] is tapped the calibration will be aborted. The
4. Acknowledge with [OK]; the instrument will return to the
main menu.
2
5. To go back to measuring mode, select [UP].
6. Turn off gas flow and remove the calibration adapter from
the sensor or disconnect tubing.
9.4
Polytron 5310 IR-specific
Due to the design of the DSIR gas sensor, the output signal of
the gas sensor is limited to 45 % . . . 55 % of the instrument-
internal supply voltage. If the gas concentrations increase
further after the maximum sensor output signal has been
reached, this does not lead to an increase of the values
displayed on the instrument response transmitted to the
central device. In case of substances with particularly low
calibration factors and/or manual configuration of a high span
calibration factor at the sensor, this may already happen at
concentrations below 100 %LEL. For substitute gas
calibrations, correct triggering of the alarm should therefore
be checked with a test gas concentration corresponding to the
alarm threshold. If necessary, the measuring range which can
be represented can be increased as required by a reduction
of the sensor output signal (see DSIR Instructions for Use,
part number 9023981) and subsequent calibration at the
instrument.
9.4.1 Performing span calibration
Prerequisites:
– Zero-point is calibrated.
– Calibration is prepared.
– Polytron 5310 IR-specific: The correct gas category is
selected.
All instruments except Polytron 57x0 (IR)
Perform span calibration:
1. Select SPN-Adj and confirm with [OK].
The Maintenance signal is transmitted by the analog
The display will show the current value blinking (e.g.
2. Apply span gas.
► Set gas flow corresponding to the sensor used (see
After the test gas has been applied to the sensor for 3
minutes and the displayed value is stable perform
calibration.
between 'CAL' and 'OK'. Otherwise it will toggle
between 'CAL' and 'FAIL'.
minutes, the instrument will time out and the display
will toggle between 'CAL' and 'FAIL'.
instrument will return to the main menu.
Span calibration
interface, no alarm or fault relays are switched.
lower hockey sticks for under range).
"Enter the menu, see 8.3.3 Entering the menu",
page 15)
Instructions for use
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Dräger Polytron 5000 Series
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