Troubleshooting - YSI EcoSense pH1000A User Manual

T R O U B L E S H O O T I N G
Display
1. Stand was pressed before
"Er1"
the electrode and ATC/Temp
probe settled to within +/-
1.5 pH of the buffer value.
2. pH electrode offset is
greater / less than +/-1.5 pH.
3. pH electrode is faulty.
"Er2" 1. Slope was pressed before
the electrode and ATC/
Temp probe settled to within
30% of the buffer value.
2. Buffer 4.00/4.01 or
9.18/10.01 is not correct.
3. pH electrode slope is off by
more than 30% of ideal slope.
"Er3" 1. Temperature is out of
the 0.0 to 60.0 °C range.
"over" 1. Measured pH is out of the
or 0.00 to 14.00 pH range.
"undr"
2. Measured mV is out of the
–1999.9 to 1999.9 mV range.
3. Measured temperature
is out of the 0.0 to
100.0 °C range.
Possible Cause(s) Possible Solution(s)
1. Press Clear key, allow sufficient
time for the electrode and ATC/
Temp probe to stabilize, re-press
Stand key to start the calibration
procedure.
2. Replace the buffer and /or the
pH electrode. Press Clear key to
recalibrate meter.
3. Replace electrode.
1. Allow sufficient time for the
electrode and ATC/Temp probe
to stabilize, re-press Slope key to
continue the calibration procedure.
2. Check if the correct buffer is
used.
3. Replace the buffer and /or the
pH electrode. Press Clear key to
recalibrate meter.
1. Bring the buffer temperature
within range.
1. Bring sample pH into the correct
measuring range.
2. Bring sample mV (ORP) into the
correct measuring range.
3. Bring sample temperature into
the correct measuring range.
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