Dräger Polytron 5000 Serie Bedienungsanleitung Seite 24

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en Sensor settings Polytron 5xx0
Change gas category:
1. Select Set-GAS-CAt
 The display toggles between the current value and the
menu item.
2. Tap [OK]
3. Select the gas category at the DSIR using
on the sensor surface.
4. Place the magnetic wand on [S] for 10 seconds.
 The transmitter display shows 80%
5. Remove the magnetic wand
 The displays shows the LEL value corresponding to
the current gas category.
 Within the next 30 seconds the gas category can be
changed.
6. Tap [S] to select the desired gas category and wait 30
seconds
 The displays shows the LEL value corresponding to
the selected gas category.
 After 30 seconds the new gas category is set.
7. Check span calibration.
14.2.2 Sensor type
This function defines the sensor type installed.
1. Select SNR-SET-dd/LC/DSIR
 The display toggles between the current value and the
menu item.
2. Tap [OK]
 The value flashes (data entry mode)
3. Tap [UP]/[DOWN] to scroll through the sensor types.
dd DrägerSensor DD/DQ
LC DrägerSensor LC
DSIR DrägerSensor IR
4. Select the sensor type and confirm with [OK].
 The value is set and the instrument returns to the
menu.
5. Exit the menu.
 Info - 301 is displayed to indicate the warm-up phase.
 Err - 112 is displayed. Perform zero calibration.
 Err - 113 is displayed. Perform span calibration.
With firmware versions ≤ 1.5.0 of the instrument, the display
text DQ is not implemented.
To install a DQ sensor, select DD.
14.3 Sensor settings Polytron 57x0 (IR)
14.3.1 Setting LEL type
Selecting a different LEL type will convert the A1 and A2
alarm level set points from internal units of ppm to equivalent
values in display units, using the new LEL factor and the
existing units of gas measurement.
24
LEL types
The LEL (Lower Explosive Limit) is an empirically determined
value for the gas concentration where an ignition could
happen. These values vary amongst the different authorities.
E.g. 100 %LEL for Methane is 5 Vol% according to NIOSH,
and 4.4 Vol% according to IEC and PTB.
S
and
Procedure:
1. Select LEL - type
 The display toggles between the current value and the
menu item.
2. Tap [OK]
 The value flashes (data entry mode)
3. Tap [UP]/[DOWN] to scroll through the LEL type definitions
corresponding to the different authorities.
Ptb
IEC
NI0S
4. Confirm with [OK].
 The value is set and the instrument returns to the
menu.
5. Exit the menu.
 Info - 305 is indicated. Please check the alarm level
set points to ensure safe operation with the new
configuration.
14.3.2 Setting the target gas
Polytron 5700 IR only
The target gas can be selected from a list of up to 100 gases
and vapors stored in the gas library of the PIR 7000. For the
list, see the Instructions for Use of PIR 7000 (9023885).
1. Select Gas - set
 The display toggles between the current value and the
menu item.
2. Tap [OK]
 The value flashes (data entry mode)
3. Tap [UP] or [DOWN] to scroll through the gas library.
4. Confirm with [OK].
 The sensor signal of the PIR 7000 is automatically
linearized and temperature compensated for the
selected substance.
 All other parameters for the selected substance (e.g.
measuring ranges etc.) are updated automatically.
 The selected substance is automatically selected as
the calibration gas. During calibration, any substance
listed in the library can be selected as calibration gas.
No manual re-calculation is necessary.
5. Exit the menu.
 Info - 305 is indicated. Please check all settings to
ensure safe operation with the new configuration.
Physikalisch-Technische Bundesanstalt
(PTB)
International Electrotechnical Commission
(IEC)
National Institute for Occupational Safety
and Health (NIOSH)
Instructions for use | Dräger Polytron 5000 Series