He/O
2
Analyzer
| 27 |
Maintenance
Warning:
The cover is connected to the instrument by several cables. When replacing the
sensor, take care not to put excessive tension on the cables or disconnect them.
During the replacement, the cables must remain bent by their own weight and
flexibility; their full tensioning by moving the cover too far from the instrument is
not allowed.
Unscrew the old sensor and install the new one in such a way that the o-ring on the sensor
closely attaches to the inlet block. Do not use excessive strength to tight the sensor to avoid
damaging the thread.
PInstall the inlet block with the sensor in the lower half of the open instrument. The pins of
the block must easily fit into the holes in the body of the instrument. During the installation
of the block ensure that the two o-rings remain fixed to the pins. If need be, use spare o-rings
included in the analyzer package.
A no. 1 Philips screwdriver and a 2.5 mm hexagonal key are needed to replace the sensor.
After each sensor replacement, the instrument has to be recalibrated.
11.3 Flow adjusting
In most cases is generally gas-flowing in the flow limiter suitable for wide range of the input
pressure. When is often analyzed the gas under low pressure, can be flow too low and so is
stabilizing of measured value slow. In this case is possible set the flow on higher value.
Slightly lift
upper cover
Move
sensor off
Unplug connector
to oxygen sensor
Careful with other cables
Содержание He/O2 Analyzer
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