Hach-Lange HQD - Sodium (Na+) Ion Selective Electrode ISENa - Manual (Page 12)

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6. If prompted, enter a name for the new method settings. Additional changes made to
the settings of an existing method are automatically saved with the same method
name.
7. Push EXIT until the meter returns to the measurement mode.
Standard units
mg/L (default)
µg/L
g/L
g/kg
mol/L
mmol/L
mol/kg
%
ppm
ppb
Select the preferred unit for ISE check
standard.
Standard value
(for Custom standard option) Enter standard value using up/down
arrow keys
Value for the custom check standard.
Table 5 Check standard options settings (continued)
Settings Options Description
Troubleshooting
Message or symptom Possible cause Action
Probe not supported
Software not updated
Update the HQd software to the newest revision at
www.hach.com/SoftwareDownloads. Refer to the HQd
Series meter manual.
HQd meter does not support
IntelliCAL probe
Contact a Technical Support Representative.
Connect a probe or
probe requires service
Electrode not connected properly
Disconnect, then connect the electrode. Tighten the
locking nut.
Software not updated
Update the HQd software to the newest revision at
www.hach.com/SoftwareDownloads . Refer to the HQd
Series meter manual.
Large number of methods stored on
electrode. Continue to let electrode connect. Do not disconnect
electrode.
Damaged electrode
Verify connectivity with another electrode or meter to
confirm isolated issue with probe. Contact a Technical
Representative.
mV reading is the same
for all solutions
Soaker bottle not removed Remove the soaker bottle.
Electrical issue Contact a Technical Support Representative
Standard not recognized
error
Soaker bottle not removed Remove soaker bottle.
Incorrect or contaminated buffer
solution
Use fresh standard solution as specified in the method
Contaminated filling solution Replace the filling solution.
Slow response time
Tape not removed from the
filling-hole
Remove the tape.
Contaminated glass sensor Clean the electrode.
Contaminated filling solution Drain and replace the filling solution with fresh solution.
filling-hole cap closed Open filling-hole cap while in use.
Low sample temperature or
temperature difference between
samples Check the sample temperature. The lower the temperature
or the greater the difference of temperatures between
samples, traditionally the longer the response time.