VAC V200 POSITIONER, Инструкция по установке, эксплуатации и обслуживанию

Страница: 7 / 14

92077r14
V200 POSITIONER
www.vacaccessories.com
7
1. Power up the current loop.
2. Connect a low ohmic ampere meter over the test points(5).
3. Set the valve/actuator to the closed/zero position (4mA).
4. Turn the feedback potentiometer shaft(6) with
a screw driver until you read 3.7 - 3.9 mA on the meter.
5. Adjust the trim potentiometer(7) marked zero
so that the meter reads 4mA.
6. Set the valve/actuator to the open position (20mA).
7. Adjust the trim potentiometer(8) marked
span until the meter reads 20mA.
8. Re-check the zero position (4mA) and
make fine adjustments if necessary.
A very basic calibration can be accomplished
without a meter, using the two LED’s.
Red LED lights up below 3.9mA, Green LED lights up above 20.1mA.
2.3.5 4-20mA transmitter Calibration
Make sure V200E/P has first been properly calibrated!
Pot adjustment.eps
5
6
6
6
5
8
7
7 8