Manual

detect mode that is available through the setup menus.
When trip detect is active, the Model 320 calibrator
will monitor the electrical measurement for a
significant change of state. When a change of state is
detected, the last pressure measurement is frozen on
the display, and the message “tripped” is displayed
over the electrical measurement.
When the Trip Rst key is pressed, the Model 320 will
resume displaying the instantaneous pressure and
monitoring for a change of state at the electrical
terminals.
The message “ready” will be displayed over the
electrical measurement.
A change of state is signified by a 10% change in
either the volts or milliamps reading. When trip detect
is active, voltage measurements will be made on the
30 V scale and milliamps measurements will be made
on the 50 mA scale. The Model 320 makes 2-3
electrical measurements per second. To guarantee that
the change of state will be detected, the change must
exist for a minimum of ½ second.
For a hook-up diagram, refer to the application note
on page 43.
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