172-65256M-00 (VFM-T2) 7 Sep 2001
14
7. Press the [RESET] button 8 times to change the third digit to “8”.
The LCD display now reads .
8. Press the [MODE] button one time.
The LCD display now reads .
9. Press the [RESET] button 7 times.
The LCD display now reads .
10. Press the [MODE] button one time.
The LCD display now reads .
11. Press the [RESET] button 6 times to change the smallest digit to “6”, which is
displayed at the far right-hand side of the LCD display of numerals.
The LCD display now reads .
All the numerals for the desired meter factor setting are now displayed.
Note that the number is still blinking at this point.
NOTE: The [RESET] button functions as the number-setting button, and the [MODE]
button functions as the place-shifting button.
12. After making sure that the blinking number is as desired, change the select switch
from "E" to "F" and press the [MODE] button. The LCD display stops blinking and
shows the newly set meter factor.
13. Verifying the New Meter Factor Setting
Change the select switch from "F" to "C" and press the [MODE] button to confirm
each individual digit. The new meter factor (Ex.) is displayed.
14. Change the select switch from “C” back to “8”.
This completes the setting of the factors.
Modifying the Pulse Width of the Output Signal (Optional)
When shipped from the factory, the pulse width is set to 1ms (standard
specification). However, if it is necessary, the product can be modified after it
arrives. It is possible to adjust the pulse width from 2 to 250ms by following the steps
below.
1. Turn the power OFF and pull the internal components out of the unit casing. (See
“Removing the Internal Components”.)
2. Set jumpers JP1 and JP2 on the display board to “2 – 250ms”.
3. Turn ON the power.
4. Produce an output pulse from the flowmeter transmitter connected to the input or
connect a pulse generator and produce an input pulse.
5. Connect an instrument capable of measuring pulse width, such as an oscilloscope,
between terminal blocks 4 and 5 (PULSE OUT).
6. The pulse width is adjusted by turning the P1 volume.
F0.9876
F0.9876
F0.9870
F
0
.0987
F
0
.0980
F
0
.
0
098
