Hach-Lange HQD - Luminescent Dissolved Oxygen Probe LDO - Manual (Page 11)

DOC272.53.80021 11
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.
Table 3 Calibration option settings
Setting Option Description
Calibration
User—100% Water-saturated air (100%) calibration
User—100% with 0 Water-saturated air (100%) calibration with 0 point
User—mg/L
Allows calibration with specified dissolved oxygen
concentration (mg/L) solution
User—mg/L with 0
Allows calibration with specified dissolved oxygen
concentration (m/L) solution with 0 point
Factory Calibration with default LDO calibration
Standard value Adjustable
Use arrow keys to specify the concentration of the solution
that will be used for calibration (if mg/L calibration mode is
selected).
Calibration reminder
Reminder Repeat Off, 8 h, 12 h, 1 d, 2 d, 5 d, 7 d
Expires
Immediately, Reminder + 30 min, Reminder + 1 h, Reminder +
2 h, Continue Reading
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 Hach Technical Support Representative.
Connect a probe or
Probe requires
service
Probe not connected properly
Disconnect, then connect the probe. Tighten the locking
nut.
Large number of methods stored on
probe Continue to let probe connect. Do not disconnect the
probe. See the HQd Series meter manual.
Software not updated
Update the HQd software to the newest revision at
wwwhach.com/SoftwareDownloads . Refer to the HQd
Series meter manual.
Damaged probe
Verify connectivity with another probe or meter to confirm
isolated issue with probe. Contact a Hach Technical
Representative.
Out of range
Sensor cap loose, scratched or
damaged
Reposition or replace the LDO sensor cap
Temperature and/or pressure sensor
error Verify that both temperature and pressure sensors are
reading correctly
1
Damaged probe
Verify both blue and red LEDs are illuminated on the
probe. If not, replace the probe or contact a Hach
Technical Representative.
Sample outside of specifications
Verify that the sample concentration, temperature and
pressure are within the range of the LDO101 probe.
iButton number does not match sensor
cap lot number Replace the iButton or sensor cap or perform a user
calibration
Sensor cap exposed to direct sunlight Install the protective shroud