SECTION 4.0 RANGE CONFIGURATION
4.1 RANGE CONFIGURATION. Corresponding pH
values for output zero (4 mA) and full scale (20 mA)
are user selectable. The factory values are 4 mA = 0
pH and 20 mA = 14 pH.
A. Output Zero (4 mA) “LoPH”
1. Depress and hold both push buttons. The display
will begin to auto scroll.
2. Release both keys when “LoPH” is displayed. The
present 4 mA pH value in memory will be dis-
played with the last digit flashing.
3. Depress and hold push button #1 (scroll) and #2
(shift) as needed to display the desired pH value.
4. Enter the value into memory by depressing both
push buttons briefly. The display will return to dis-
playing the present pH value.
B. Full Scale (20 mA) “HiPH”
1. Depress and hold both push buttons. The dis-
play will begin to auto scroll.
2. Release both keys when “HiPH” is displayed. The
present 20 mA pH value in memory will be dis-
played with the last digit flashing.
3. Depress and hold push button #1 (scroll) and #2
(shift) as needed to display the desired pH value.
4. Enter the value into memory by depressing both
push buttons briefly. The display will return to dis-
playing the present pH value.
NOTE
For a reverse output, enter the higher value
for “LoPH”, and the lower value for “HiPH”.
NOTE
If the factory values are to be used, the
Quick Start-up Procedure may be used.
See Section 2.0
.
MODEL 2081 pH SECTION 4.0
RANGE CONFIGURATION
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