Teledyne Gasurveyor 700, Руководство пользователя

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Revision 3
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Gasurveyor 700
USER MANUAL
5. Disconnect the calibration gas from the monitor. When the gas concentration drops below 10%
LEL, the monitor returns to the normal operating screen.
CAUTION: The infrared sensor fitted in the GS700 is used for measuring
all three flammable gas ranges: ppm, LEL and Volume. Testing with the
LEL calibration gas validates both the response and accuracy of the LEL
range and response only of the ppm and Volume ranges.
It is the user’s responsibility to ensure that any local legal regulations
(including internal company procedures), does not require all ranges of
the instrument to be individually tested. In this case, it is recommended
to perform the test described in Section 7.2: Manual Bump Test (all
ranges) .
7.2. Manual Bump Test (all ranges)
To perform manual Bump Test:
1. Switch monitor on and allow warm-up to complete. Select an operating mode that displays all
instrument ranges. Validate all readings on screen are indicating 0 (or 20.9% for O
2
).
2. Connect the calibration gas to the monitor inlet (as shown in Figure 79: Connect Calibration
Gas ).
Figure 79: Connect Calibration Gas
Note: Calibration gas shall be delivered to the monitor at ambient pressure. Application
of pressurised mixture will result in ‘Sample Fault’ alarm. Use of a On-Demand Flow
Regulator is recommended.
3. Wait for readings to stabilize.
Figure 80: Bump Test - Applying Gas
4. Ensure the value displayed matches the concentration of the calibration gas.
Note: Displayed readings to be within the organisation’s internal regulations and/or
local legislation.
5. Disconnect the calibration gas from the monitor and allow the readings to return to 0.