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8 - 4
Does input signal satisfy
the specifications?
NO
NO
NO
NO
YES
YES
YES
¥ Errors exceed specified limits
¥ Measuring value indications fluctuate
¥ Pen/printer carriage goes off-scale at 0% or 100%.
YES
Correct the input according to specifications
Are input wires correctly
connected to the terminals?
¥ Correctly attach the terminal cover.
¥ Check the wind from appliances such
as cooling fan.
¥ Decrease the temperature change
around the input terminals.
Is the input free of noise?
Are measures applied
to prevent ambient
temperature changes?
¥ Separate the input signal wires from
the noise source.
¥ Ground the recorder.
¥ Ground the measuring object.
¥ Insulate TC from the measuring object.
¥ Use shielded cables for input signals.
¥ Check the wiring connection being
correct. (See subsection 2.2.3.)
¥ Attach the terminal block correctly.
¥ Tighten the terminal screws again.
¥ Insulate the RTD from grounding wire.
¥ Replace the TC if its wire is broken.
Is the recorder parallel
connected with other
instruments?
NO
YES
¥ Halt the burnout function of other
instruments.
¥ Make one-point grounding together
with other instruments.
¥ Cancel the parallel connection (for
example, use a double element TC).
Contact OMEGA Engineering.
NO
YES
Is pen position/dot-printing
position correctly adjusted?
Readjust the pen position/dot-printing position.
See subsection 4.8.6, 4.8.7.
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