User guide

I-E67-84-1B February,2002 4-6
Manual activation is accessible in the
Output/Hold Mode of Operation. In this mode,
the Hold State permits the output to be held
at the current level and/or state or at a
level and/or state manually set by the user.
Automatic activation occurs during a Two-Point
Process Variable Calibration and Cleaner
activation. For the Two-Point Process
Variable Calibration, the analyzer will
automatically hold all outputs at the current
levels and states. Upon completing the two-
point calibration, the TB84PH Advantage Series
analyzer will query the user to either release
or maintain the hold condition.
For a relay output configured as a Cleaner, a
user has the option to enable an automatic
hold condition using the levels and states
capture directly before initiating the
cleaning operation. The hold condition only
occurs during the relay on and recovery times
and can be separately set for the analog and
relay outputs. If desired, the relay outputs
can be disabled instead of held during a
cleaning cycle.