Ion Science Hydrosteel 7000 - Manual (Page 37)

Hydrosteel 7000 MANUAL Ion Science Ltd
Page 37 of 43
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Maintenance and calibration
Hydrosteel 7000 unit maintenance
The unit should be checked routinely for operation and re-calibrated yearly. Re-calibration requires that the
unit be returned to Ion Science Ltd for service.
Quarterly maintenance

Inspection of LED, 4-20 mA outputs and diagnostic data should be stored to memory to ensure that it
is running correctly. If the 4-20 mA are used, the diagnostic alarms will be raised as 3.5 mA alarm
signals. It is still advisable to check the LED and then if necessary the diagnostic data as this
provides additional information.
Yearly maintenance

Inspect the LED, 4-20 mA outputs and diagnostic data stored to memory.

Factory calibration and service. This includes testing and possible replacement of H
2
sensor, filters,
pump, restriction, back up battery, tubing, valve, fuses.
Note Ion Science does not recommend maintenance in the field that requires the lid to be removed. With the
lid removed the Hydrosteel 7000 analyser is vulnerable to water and dirt ingress.
Probe installation
Hydrosteel probes are made of high temperature tolerant materials and are corrosion resistant. The main
concerns are; blockage of the probes and conduit by water or rust from corrosion of the target surface or
mechanical damage. The following should be inspected yearly and after every shut down:

The sample tube is secure and free from damage

The Han connection to the Hydrosteel 7000 is free from damage

If the probe is accessible check the following:

The conformance to the test surface is correct and the banding is secure

Evidence of corrosion

The probe is free from blockages or dirt debris that may potentially cause a blockage. If
appropriate do a quick pressure decay test. No pressure should be supported if the system is
free from blockages.

If the probe is covered by insulation check the following:

Inspect at the entry point that no damage has occurred to the probe

Check that insulation is secure, sealed and free from external damage that might allow water
ingress. Water that penetrates the insulation may block the probe directly or cause corrosion of
the test surface under the probe. This corrosion is likely to block the air flow during sampling.

Check that the thermocouple is functioning. See the diagnostics table for more information.