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1.6 For samples that are inherently unstable, the
instrument will not autolock. In this case, use the mV
NON-AUTOLOCK mode for measurements.
2. Measurement in the mV NON-AUTOLOCK mode.
2.1 Connect an ORP electrode to the BNC connector of
instrument.
2.2 Press the [MODE] key for the LCD to indicate mV and
for the AUTO annunciator to be off.
2.3 Rinse the electrode with distilled water and immerse
it in sample to be measured.
2.4 Allow sufficient time for the display to stabilize.
The instrument will display the mV value of the
sample.
If "OvEr/Undr”" is displayed, the mV value measured
is out of the “-2000/+2000 mV” range. The instrument
will display the correct value once the input mV is
brought within range. It is not necessary to press the
[CLEAR].
2.5 The ATC/Temp probe can be used to measure the sample
temperature as required.
pH BUFFERS
The temperature coefficient of pH calibration buffers
4.00 ,4.01, 6.86, 7.00, 9.18 and 10.01 are stored inside the
instrument. The buffers used to calibrate the instrument
must exhibit the same temperature characteristics as the
stored values.
