Test Gases - Dräger Polytron 6100 EC WL Gebrauchsanweisung

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Calibration
Special states are displayed in PolySoft.
9.2 Exiting special states
1. Identify the malfunction:
a. Check measured value status (PV_STATUS).
b. Check device status (DIAG_STATUS).
c. Read out the device status using PolySoft.
2. Start with troubleshooting (see "Troubleshooting", page 43) or follow
corrective actions according to PolySoft.
Errors and warnings are non-latching. If error or warning conditions are
resolved, the respective special state is also no longer transmitted.
10 Calibration
During calibration, the measuring accuracy of the sensor is checked and
adjusted with a known test gas concentration. First, the zero-point and then the
sensitivity of the sensor is calibrated. The length of the calibration intervals
depends on the respective regional normative requirements.
To ensure proper operation, never adjust the sensitivity before the zero-point is
set. If these operations are performed in the wrong order, the calibration is
incorrect.
WARNING
Incorrect adjustment!
Incorrect adjustment can lead to inaccurate measured values.
► After a sensor change, check all settings and parameters.
► Check a newly installed sensor with target gas to ensure correct operation.
10.1

Test gases

For test gas properties (e. g. humidity, concentration) refer to the corresponding
sensor data sheet.
42
Test gas humidity is irrelevant for O
Depending on the type of calibration different test gases are used.
Zero gas
Zero gas is a test gas to calibrate the zero point. If ambient air is free from
interfering impurities and measured gas, it can be used as zero gas. For O
sensors, nitrogen (N
Calibration gas
Calibration gas is a test gas to calibrate the sensor sensitivity during span
calibration. Calibration gas is a known concentration of the measured gas
diluted with clean air or nitrogen.
10.2
Prerequisite:
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–
Health hazard due to test gas
Inhaling test gas may risk health or lead to death.
► Do not inhale test gas.
► Observe risks and security statements related to the test gas (Refer to data
Triggering alerts by test gas
Applied test gas may trigger alerts.
► Make sure that test gas is no longer applied after calibration.
Supplies:
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–
–
Instructions for use |
Dräger Polytron
sensors.
2
) is used.
2
Preparing the test gas supply
Warm-up phase of the sensor completed (see "Commissioning", page 41).
The date and time are set correctly (check with PolySoft).
WARNING
sheets and instructions figuring on calibration devices).
CAUTION
Test gas cylinder with pressure reducer, for corrosive gases with stainless
steel pressure reducer
Calibration adapter with hose nozzles (order no. 68 10 536)
Hose, type according to the gas property (e.g., FKM hose, order
no. 12 03 150)
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6100 EC WL, Dräger Polytron
2
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Repeater ISA