Modeles 4370 UR1800 Recorder Instruction Manual

IM 4H3B1-01E
The input value and measured value
are very different.
(e.g. pens are staying at 0% or 100%
of the chart, big fluctuations.)
Does the input satisfy the
specifications? (signal source
resistance, etc.)
YES
Are the span and range
settings correct?
YES
Is the input free of noise?
YES
Is the
environmental temperature
constant? (in case of temperature
measurement)
YES
Is the input wiring correct?
YES
Is the recorder
free of parallel wiring with
other equipment?
YES
RJC INT/EXT setting is
correct?
(TC input)
YES
Is position of pens or
printer carriage correct?
YES
NO
NO
NO
NO
NO
NO
NO
Contact your nearest Sales & Service center
12.2 Troubleshooting Flow Chart
Meet the specifications
Adjust the span and range
Ground the recorder properly.
Ground the measuring object properly.
Insulate TC and measuring object.
Use shielded wire for input.
Correct A/D integration time (see 9.2.1).
Use an input filter (see 9.2.4).
Separate noise generating wire.
Use an input terminal cover.
Protect input terminal from wind or fan.
Stabilize room temperature around the
input terminal.
Wire correctly (see 3.2.3).
Fix the terminal block again.
Fasten terminal screws.
Insulate RTD from ground.
If broken, replace TC.
Stop burnout function of other equipment.
Ground the recorder and other equipment
at the same grounding place.
Disconnect parallel wiring.
(e.g. using double element TC)
Set correctly (see 9.2.3)
NO Adjust pen or printer carriage
position (see 11.3 or 11.4)
Adjust the position of the
printer carriage (see 11.3)
12 - 3
12. TROUBLESHOOTING