Hach Intellical MTC30101, User Manual

Page: 9 / 16

3. Select Modify Current Settings.
4. Select Measurement Options and update the settings:
Option Description
Response Time Sets the response time—
• Fast (2 mV/minute)
• Medium (1 mV/minute) (default)
• Slow (0.5 mV/minute)
The response time affects the speed of the measurement by adjusting the
stabilization criteria.
Measurement
Limits Sets the measurement limits—Lower limit (default: -1200.0 mV) or Upper
limit (default: 1200.0 mV).
The measurement limits can be set to match the acceptable values for
the sample. When the measurement is above the upper limit setting or
below the lower limit setting, the meter shows an "Out of limits" message.
This message is an alert to a potential problem with the process
conditions.
5. 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.
6. Push EXIT until the meter returns to the measurement mode.
Change calibration options
1. Make sure a probe is connected to the meter.
2. Push and select MTC301 Settings.
3. Select Modify Current Settings.
4. Select Calibration Options and update the settings:
Option Description
Standard Sets the calibration standard—
• ZoBell’s (221mV – 25 °C)
• Light’s (468mV – 25 °C)
• Custom
Temperature compensated for ZoBell’s solution.
Standard values are shown on the Calibration Options screen.
Light’s solution is characterized at 25 °C.
Custom standard values and temperature are user-defined.
Offset Limits Sets the offset limits—±1 mV to 250 mV (default: ±25 mV).
The offset must fall within set limits for successful calibration.
Standard
Value When Standard is set to Custom, sets the values for the custom calibration
standard— -1200.00 to 1200.0 mV (default: +221.0 mV). Custom standards
are characterized at 25 °C.
5. Select Calibration Reminder and update the settings:
Option Description
Reminder
Repeat Meter will make an audible sound when a calibration is due and repeat the
sound at the selected interval—Off (default), 1 d, 7 d or 30 d.
Expires Calibration expires after the selected time—Immediately, Re
30 min, Re 1 h, Re 2 h or Continue Reading.
Note: The meter cannot be used to read samples after calibration has
expired unless Continue Reading is selected.
9