1. Turn the 665 by pressing the
2. Zero the 665 by pressing
3. Connect the device under test to the “+” port of the 665. If a
differential measurement is being made, connect the other
pressure source to the “-” port.
Note:
Any pressure connected to the “-” port will be subtracted
from the “+” port and the result will be displayed.
4. Read the measurement in the display.
5. Remove pressure prior to diconnecting the lines from the
inputs.
During a measurement the following functions can be used.
9
8
D. CONTROLS & FUNCTIONS (Continued)
Press to turn the 665 on.
Press to activate the display backlight. Backlight
powers off after 15 seconds.
Press the SHIFT key first then this key to acti-
vate the digital filter. Use to smooth fast chang-
ing measurements.
Press to activate “blue” functions (Load, Save,
Min, Max). “EXP” will display when active.
Press the SHIFT key first, then this key to turn
the 665 off.
Press to activate/deactivate the display hold.
Press the SHIFT key first, then this key to print
readings to the optional A740 printer.
Press to select resolution and confirm menu
selections.
Press the SHIFT key first, then this key to turn
deactivate/activate auto power off.
Press to change the unit of measure.
Press the SHIFT key first, then this key to zero
the 665 prior to making a measurement.
Press to activate shift mode (red key functions).
Press to cycle through bottom display modes
(percent of fullscale, current time, number of
logged readings.
Press the SHIFT key first, then this key to acti-
vate EDIT mode.
Press to display number of logs made.
Press the SHIFT key first, then this key to acti-
vate/deactivate log mode.
E. Making a Measurement
Activates the display backlight. Backlight powers off
after 15 seconds.
key.
Press to change the unit of measure.
Press to activate/deactivate the display hold.
Press to select resolution.
Press to cycle the bottom display through cur-
rent time, ration in percent of reading compared
to full scale, and number of logged data (NUM)
Press the SHIFT key first then this key to acti-
vate the digital filter. Use to smooth fast chang-
ing measurements.
There are many other features such as data storage and log-
ging that can be used. Please see next sections.
TPI 665 manual.qxd 11/14/2008 10:36 AM Page 8
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