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4. D isplay actual temperature. The CP 440 is temperature compensated,
this displays the temperature measured by the internal sensor.
The value can be set to degrees F or degrees C using the arrow keys.
5. S et damping. Choices are "on" and "off" set with the 6 and 5 keys.
Turning damping on will smooth readings from pulsating pressure
sources.
6. Set sample rate: This determines how often pressure is sampled and
the display is updated. Choices are 0.5, , 3, and 0 samples/second.
Note that 0/sec provides the fastest response time.
7. S et TARE. This allows you to set a constant offset value, which is then
subtracted from the measured pressure. For example if a TARE is set at
30 Psi, and the measured pressure is 37 Psi, the displayed value will
be 7 Psi. A pressure of 27 Psi would be displayed as –3 Psi.
The tare value is set manually with the 6 and 5 keys, and is based on
the engineering units and resolution selected for display. TARE value
can be set to the maximum range of the gauge.
The bar graph will always display the actual pressure based on the full
range of the gauge regardless of the tare setting. This is done for safe-
ty to insure that even with a "0" reading that pressure is being applied
to the gauge.
8. F unction Lock: Access to each of the settable parameters above can
be turned "off" once set, to prevent unauthorized changes to configu-
ration. This is accomplished through a password protected "superviso-
ry mode". Press ENTER to access the supervisory mode, or CONFIG to
return to normal operation.
3. Supervisory Mode
Press ENTER when "FUnC LOCK" is displayed, 0PWRD will be displayed
on the gauge. The password to enter supervisory mode is 0, set using
the 6 and 5keys. Holding a key continuously will cause the display to
advance more quickly for faster setting. The password is factory set and
cannot be changed.
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