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Arsenometer HMAS100
Instruction Manual v2.0
2.4. TROUBLESHOOTING
Whilst your Arsenometer is designed to be very reliable, problems may occur
throughout its working life. The following tables are intended to help you
diagnose and resolve these problems simply and quickly. Should you not be
able to resolve the problem please contact your supplier and they will be able
to assist you.
When troubleshooting your Arsenometer the following steps should be undertaken in this
order:
1. Reference Electrode
– does the Reference Electrode contain the right level of
electrode fill solution? Is it damaged at all? Are there air bubbles in the inner
tube?
2. Stirrer
– does the stirrer rotate? Does it mix the powder reagents when
operating?
To check this run the stirrer according to the instructions on page 16
3. Working Electrode
– is the Working Electrode plated correctly?
Is WE2 yellow in colour?
4. Solutions
– have the solutions been contaminated? Have the correct buffers been
added in the correct order? Has the right amount of standard been added?
The Arsenometer will try and help you with determining the problems. See below.
Displayed Error Probable Cause
> L.O.D
The metal concentration is above
the maximum limit of 500ppb.
Dilution should be used.
< L.O.D
The metal concentration is below the
minimum limit of detection for the method
being used.
Addition error
The increase in metal response was not
sufficient enough to determine the addition
Calibration error
The addition was not added or the
metals have not been detected
