NAVI F-52, Instruction Manual

Page: 217 / 270

Chapter 15 Maintenance and troubleshooting
15.2 Troubleshooting
204 HORIBA
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ERR No.06 Abnormal calibration point
Definition
6th point calibration was tried.
There is no influence to the calibration data up to the 5th point.
Refer to "3.4.3 Calibration point setting" page 46.
●
ERR No.07 The pH meter cannot identify the standard buffer
Definition
If the automatic standard-buffer identifica-
tion function of the meter cannot identify
kinds of standard buffer, re-calibrate the
meter after performing the appropriate mea-
sures, below.
Cause How to solve problem
6th point calibration
was executed. Regulate the calibration up to 5 points.
This error message is released by setting the
pH meter to measurement mode.
Cause How to solve problem
There is a problem
with the standard solu-
tion. Prepare the standard solution anew.
There is a problem
with the standard solu-
tion setting. Check the kind of the calibration solution of
the NIST, USA standard setting and the one
used for calibration and match them.
The responsive mem-
brane is dry or dirty. Measure after cleaning the responsive mem-
brane and soaking it in pure water for 24
hours.
Reference internal
solution is poor or
dirty. Replace the standard solution with new solu-
tion.
The responsive mem-
brane is damaged or
worn out. Replace the electrode.