Hach-Lange HQD - Gel filled ORP_Redox electrode MTC - 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.
Change check standard options
1. Make sure an electrode is connected to the meter.
2. Push the METER OPTIONS key and select (MTC101) Settings.
3. Select Modify Current Settings.
4. Select Calibration Options.
5. Update the settings. Refer to Table 5 .
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.
Offset limits ± 1 mV - 250 mV (± 25 mV default)
Offset must fall within set limits for
successful calibration.
Standard value (for custom
standard option) Enter standard value using up/down arrow keys.
Range -1200.0 mV to 1200.0 mV Custom standard value. Custom
standards are characterized at 25 ºC.
Table 4 Calibration options settings
Settings Option Description
Table 5 Check standard options settings
Settings Options Description
Standard
ZoBell’s (221 mV -- 25 ºC) (default)
Light’s (135 mV -- 25 ºC)
Custom
Temperature compensated for ZoBell’s
solution.
Standard value for check standard.
Standard value will appear on Check
Standard Options screen.
Light’s solution is characterized at 25
ºC. Custom standard values and
temperature are user defined.
Check standard reminder
Reminder: On or Off (default)
Allow Defer:Yes
Meter automatically displays check
standard screen if reminder is on.
Measurement of check standard can be
delayed if Allow defer: is set to Yes.
Acceptance Criteria
Acceptance Limits: ± 1 mV to 25 mV
(default: ± 10 mV)
Cal Expires on Failure:Yes or No
(default) Values (as mV) that check standard
must fall within in order to pass.
Calibration expires if check standard
fails.
Standard value (for Custom Standard
option)
Enter standard value using up/down
arrow keys. Range -1200.0 mV to
1200.0 mV
Value and temperature for custom check
standard are user defined.