Thermo Scientific Alpha pH 800, Manual

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7.4.2 Selecting pH or ORP mV measurement
Besides selecting the controller to function as a pH or ORP (mV) controller, it
also allows the selection of the type of input: symmetrical or asymmetrical.
Symmetrical mode is used in conjunction with a potential matching pin – in an
electrically noisy environment. Please refer to section 3, page 6 for a graphical
representation.
1) Follow directions in 7.4.1 to enter Configuration mode.
2) Press ENTER key . Scroll with
Δ
or
∇
keys until upper display shows mode of
operation (pH or ORP mV) and lower display shows symmetrical (SY) or
asymmetrical (ASY) input type.
3) Proceed to 7.4.3 , or return to Measurement mode by pressing
Δ
and
∇
keys
simultaneously (escape).
7.4.3 Reverting to factory default settings
Use this parameter to reset all settings to factory default. Changing from “no” to
“YES” and pressing ENTER key resets all settings to factory default.
WARNING: If “Yes” is selected, all settings
input will be overwritten! no
dEF
SETUP
HOLD
1) Follow directions in 7.4.1 to enter Configuration
mode.
2) Press ENTER key . Scroll with
Δ
or
∇
keys until upper display shows “no” or”
YES”, and lower display shows “deF” (default).
3) Press
Δ
or
∇
keys to select no or yes. Selecting “YES” and pressing
ENTER key will overwrite all user-settings and automatically return to
Measurement mode.
4) Press ENTER key to confirm your selection and return to Advanced Set-up
mode, or return to Measurement mode by pressing
Δ
and
∇
keys simultaneously
(escape).