Thermo Scientific MIE ADR-1500, Instruction Manual

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Troubleshooting
6-6 MIE ADR-1500 Instruction Manual Thermo Fisher Scientific
The sixth column in logged data is the two digit hexadecimal error code
under the heading “Flags”. An error code of ‘00’ indicates that no error was
detected during that logging period. Error codes other than ‘00’ indicate
that one or more of eight possible errors have occurred during that logging
period.
Table 6–3 indicates the codes which are summed to produce the 8-
bit (2 digit hexadecimal) error flag code.
Flow rate errors do not always indicate a serious instrument malfunction as
they might indicate that the flow may have been momentarily obstructed
or that a filter requires changing.
Except in the case of Flow rate errors , instruments indicating an error
should be serviced to correct the problem. The identification of the error
may help the user to decide whether or not the data collected is valid. For
example, a “Scatter signal” error indicates that scattering or mass
concentration data is invalid, but a persistent “Flow rate” error may
indicate that particle cut point may be flawed.
The fault causing the error can be determined by converting the
hexadecimal error code to a binary number, which is translated by the
following
Table 6–3 .
Table 6–3. Troubleshooting – Error Codes in Logged Data
Hex code [Flags] Binary Fault
01 x 0000 0001 b Flow rate low
02 x 0000 0010 b Flow rate high
04 x 0000 0100 b Source current low
08 x 0000 1000 b Source current high
10 x 0001 0000 b Ref. detector low
20 x 0010 0000 b Ref. detector high
40 x 0100 0000 b Scatter signal low
80 x 1000 0000 b Scatter signal over-range
Example: 12 x = 0001 0010 b => Ref. detector low, Flow rate high
Example: A4 x = 1010 0100 b => Scatter signal over-range, Ref detector
high, and Source current low
Example: 03 x = 0000 0011 b => Flow rate low, Flow rate high (not
unusual for a first point)
Error Codes in
Logged Data