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Instruction Manual pH 5+, pH 6+, Ion 6+
3.3 Millivolt (mV) Calibration (6+ only)
Oxidization Reduction Potential (ORP or Redox) as measured by an ORP electrode in
mV units is not a precise measurement, but is useful as a relative indicator. As such,
mV offset adjustment is not meant to enhance accuracy, but rather to make readings
comparable to a reference.
Commercial ORP solutions are commonly used as a check standard—a meter/electrode
system is verified to be close to a given value although adjustments are not made.
These solutions can be used as a calibration standard in which adjustments are made in
an attempt to match the ORP value, however results are often difficult to reproduce.
1. Turn on the meter and select mV mode by pressing
if necessary. Dip the ORP
electrode into a solution with a known mV value (e.g. Zobel, Light’s, quinhydrone, or
iodidetriiodide) and provide brief or slow stirring.
2. Press
to begin mV calibration mode. “” (calibrate) will display briefly. The
un-adjusted mV value will blink.
3. Use
(pH 6+) or (Ion 6+) to adjust the reading to the desired value.
The maximum adjustment is ± 50 mV.
4. When the reading has stabilized, the mV annunciator will stop blinking. Press
to confirm the value. “” (confirm) will display briefly. The meter will automatically
save the calibration, cease blinking, and begin mV measurement.
12
- Instruction Manual 1
- Table of Contents 3
- 1. INTRODUCTION 4
- 2. GETTING STARTED 5
- or to access the 5
- or again to change setup 5
- Inserting New Batteries 7
- Powering the Meter On 8
- 3. CALIBRATION 9
- Changing the pH Buffer Group 11
- Reset Type Description 12
- ” will 12
- 3.4 Temperature Calibration 16
- 4. MEASUREMENT 18
- Problem Cause Solution 19
- 6. SPECIFICATIONS 20
- 9. RETURN OF ITEMS 23
- 8. WARRANTY 23
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