Xylem PC320 Process Controller - Manual (Page 15)

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SAVE and MENU. A sensor does not need to be connected during this process. The
20mA Output Cal menu sets the 20mA output in the same way. Use UP and DOWN
to adjust the output until the current meter reads exactly 20.000mA. The Calibrate
Logger menu is used to recalibrate the PC320 data logger option only and will be
discussed in the section titled Data Logger Option and in the Data Logger Option
software manual.
Decimal Places:
Use this menu option to set the maximum number of decimal places for the sensor
readings in the display. Press RIGHT arrow to select, then UP and DOWN to change
the display resolution, Then SAVE to store. If the display overflows, the decimal point
will automatically be shifted to the right to provide the most accurate data. The
maximum number of decimal places is 5.
Averaging Time:
The PC320 Process Controller can average the sensor reading over a programmable
period of time. A one second time setting defeats the averaging feature, since the
display is normally updated every second anyway. Press the RIGHT arrow button to
change the setting. use the UP and DOWN arrows to set the averaging time and then
press SAVE. The maximum averaging time is 30 seconds.
Power Saving Mode:
The power saving mode allows the average power consumption to be reduced by
controlling the time the sensor and LCD backlight are turned on. To set the power
saving parameters, press the RIGHT arrow button. The LCD Backlight has 3 settings,
ON turns the backlight on all the time, OFF forces the backlight to be off, and 1
Minute mode will turn the backlight on when any button on the keypad is pressed, then
it will turn off again after one minute of inactivity. Use the UP and DOWN arrows
and SAVE to change and save the setting. The Sample Rate is the interval between
sensor readings (and how often the display and 4-20mA output will be updated). Use
LEFT and RIGHT to select a digit and use UP and DOWN to scroll through 0-9, press