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mV Operation:
mV Measurement
XL15, 20, 25, 50 and 60 meters
In the mV mode, you will be able to make measurements in either absolute or relative millivolts,
access the mV Setup screens and print your results to a printer or a computer.
Connect the electrodes you will be using to the meter.
Absolute mV Measurements
1. Access the mV measure screen from the main screen
2. Immerse the rinsed electrode(s) in the sample and stir gently.
3. Record the measurement when STABLE is displayed.
Relative mV Standardization and Measurement
In the relative mV mode, we have an option either to adjust the displayed value within a ±150 mV
window or equate it to zero.
1. Access the mV Measure screen from the main screen.
2. Immerse the rinsed electrode(s) in the mV (ORP) standard solution and wait for
STABLE
to appear.
3. Touch
rel mV
to access the Relative mV screen. When rel mV is touched, a dialog box
appears.
4. Touch
SET
to set relative mV using numeric keypad
and press
Enter
to confirm value.
OR
Touch
DEFAULT
to accept the default
value (0 mV)
OR
Touch
CANCEL
to cancel and return to previous screen.
5. The meter is now ready to take relative mV measurements.
Rinse the electrode with water and shake dry. Do not wipe the electrode. Wiping the electrode
can cause a static charge on the glass bulb that will result in inaccurate readings.
Summary of Contents for XL 20
Page 1: ......
Page 138: ...127 Ion Operation Known Addition Method XL25 50 and 60 meters...
Page 140: ...129 Ion Operation Known Subtraction Method XL25 50 and 60 meters...
Page 142: ...131 Ion Operation Analate Addition Method XL25 50 and 60 meters...
Page 144: ...133 Ion Operation Analate Subtraction Method XL25 50 and 60 meters...