Chapter 3. Programming Site Data
3.9Entering the Analog Output (cont.)
3.The next prompt asks you to enter the zero (base) value for the analog output. This value represents the 0/4 mA output (in flow units).
a.Press [ENTER] to open the text box.
b.Use the numeric keys to enter the desired value.
c.Press [ENTER] to confirm your selection.
4.The next prompt asks you to enter the span (full scale) value for the analog output. This value represents the 20 mA output (in flow units).
a.Press [ENTER] to open the text box.
b.Use the numeric keys to enter the desired value.
c.Press [ENTER] to confirm your selection.
5.The last prompt, On Error, asks you to select how the PT878 will handle the analog outputs in the event of a fault condition. The meter offers three alternatives:
•Hold Last Value (hold the last good reading)
•Force Low (force the reading to 0 or 4 mA)
•Force High (force the reading to 20 mA).
a.Press [ENTER] to open the
b.Scroll to the desired selection.
c.Press [ENTER] to confirm your selection.
You have completed entering data in the Analog Output option.
•To confirm the entries and return to Operate mode, press [F3] (OK). The PT878 returns to Operate Mode.
•To leave the window without confirming the entries, press [F2] (Cancel) or the [ESC] key. The PT878 returns to Operate Mode.
56 | Transport® Model PT878 Portable Liquid Flowmeter User’s Manual |