RKI Instruments SD-705EC - Manual (Page 31)

PT2E-1140
② Zero adjustment impossible
Zero adjustment impossible
Yes
Yes
Zero adjustment mode
with fresh air supplied?
No
Carry out zero adjustment
while supplying the fresh air.
No
Is voltage between TP6(+) and
TPO(-) within -120mV ∼ +120mV? Sensor deterioration.
Since the sensor must be
replaced, contact our local
agent or RIKEN KEIKI.
Yes
There may be an abnormality in
the electric circuit.
Turn OFF the power supply to
this unit and contact our local
agent or RIKEN KEIKI.
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