Chapter 8. Servicing the PT878
Transport® Model PT878 Portable Liquid Flowmeter User’s Manual 177
8.7.2 Calibrating Inputs (cont.)4. Press the [X] arrow key to move to the Read box, and then press
[ENTER] to read the low input.
5. The next prompt asks for the value to which you want to set the high
input (20 mA).
a. Press [ENTER] to open the text box.
b. Use the numeric keys to enter the desired value.
c. Press [ENTER] to confirm your entry.
6. Press the [X] arrow key to move to the Read box, and then press
[ENTER] to read the high input.
7. Press the [T] key to move to the Calibrate box, and press [ENTER] to
calibrate the inputs.
8. At this point, you have two options:
a. If you are unsatisfied with the calibration, you can reset the inputs to
factory defaults. Press the [X] arrow key to move to the Reset box,
and then press [ENTER] to undo the calibration.
b. If you are satisfied with the calibration, press the [T] key to return
to the Input# prompt, and repeat steps 2 through 8 for the other
input.
You have completed calibrating the inputs. To leave the Inputs window,
•Press the [S] key to return to the Inputs tab, and the [W] arrow key to move to the Outputs tab.
•Press [F2] (Cancel) to return to Operate Mode without confirming the
changes.
•Press [F3] (OK) to confirm the new data. The PT878 returns to
Operate Mode.