Error Messages - Datcon DT9000 Operating Instructions Manual

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10.3. Error messages

The instrument has a sophisticated self-testing function; it
is capable of detecting the majority of the errors. All
mnemonics (code words) presented on the display comes
from English expressions in abbreviated form.
A/D overflow (Error: A/D Overflow)
The loop current is too high, it cannot be measured.
Repairing: the measuring loop (most probably the
transmitter) is faulty, therefore too high current flows in the
loop. Repair the measuring loop.
Loop current < 3.5 mA
The loop current is too low, it cannot be measured.
Repairing: the measuring loop (the transmitter) is faulty or,
the load resistance in the loop is too high. Repair the
measuring loop.
Loop current > 20.5 mA
The loop current is too high, it cannot be measured.
Repairing: the measuring loop (most probably the
transmitter) is faulty, therefore too high current flows in the
loop. Repair the measuring loop.
Scaling error (Error: Scale)
The value of the physical quantities corresponding to the
currents 4 mA and 20 mA is set to zero.
Repairing: set the actual physical value.
Underflow (Error: Underflow)
The physical quantity is lower than the minimum that can
be displayed. (In the case of four-and-a-half-digit display
mode: < -20 000; in the case of three-and-a-half-digit
display mode: < -2 000.)
Repairing: most probably you haven't set the scale of the
instrument correctly when you specified the physical
values, or the measuring loop is faulty.
Overflow (Error: Overflow)
The physical quantity is higher than the maximum that can
be displayed. (In the case of four-and-a-half-digit display
mode: >20 000; in the case of three-and-a-half-digit display
mode: >2 000.)
Repairing: such as Underflow.
DT9000
20171205-V2