22
flash. This means the instrument is waiting for a stable
reading.
The display will track the mV value as sensed by the
electrode,.
When the display changes less than 1 mV within 10
seconds, the
AUTOLOCK function will be activated. The WAIT
annunciator
will stop flashing and stay off. The reading is the "locked"
and will
respond to further changes from the electrode. The "locked"
display
is the mV value of the sample.
If "
OvEr/Undr
" is displayed, the mV value measured is out
of the “1250/-2000 mV” range. The instrument will display
the correct value once the input mV is brought within
range. It is not necessary to [CLEAR] the instrument.
1.5 The ATC/Temp probe can be used to measure the sample
temperature as required.
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 optional combination ORP electrode to the
instrument in the BNC connector.
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.
