CK-R/I resistor/current valve position converter is a potentiometer that uses an electric actuator as valve position feedback to convert the resistance change value into a 4-20mA DC valve position current signal output, which is used for indicating and controlling the valve position opening. It is widely used in angular and linear electric actuators.
1、 Input:
If it is one of the 500 Ω~5K Ω potentiometers, the potentiometer used for valve position feedback in electric actuators is usually 1K. Please specify the resistance value of the potentiometer used when ordering.
2、 Output:
4~20mA DC. Used for valve position indication and control.
3、 Power supply:
Usually 220V, special requirements can be customized.
4、 Transformer dimensions:
The length, width, and height are 80 × 50 × 30mm
5、 Wiring diagram of resistor/current converter and electric actuator

6、 Debugging methods for resistance/current converters

1. Only after ensuring the correct wiring (especially the 220V power cord cannot be connected incorrectly), can the power test be conducted.
2. When the middle tap of the input potentiometer is at 0%, adjust the output 4mA zero point. Zero adjustment is carried out using the zero potentiometer of the valve position transmitter. When turned clockwise, it can increase the output current, and vice versa.
3. When the middle tap of the input potentiometer is at 100%, adjust the input 20mA range transmission. The range adjustment is carried out using the range potentiometer of the valve position transmitter. Turning clockwise can increase the input current, and vice versa.
4. Repeat steps 2 and 3 until 0% and 100% correspond to the 4-20mA output standard, and the debugging is complete.
5. Each time the potentiometer on the valve position transmitter is adjusted, it should be gently adjusted. If no change is found in the input, the adjustment direction should be changed (for example, clockwise to counterclockwise) and the adjustment of that input point should be immediately stopped and changed to another input point (for example, if it was originally zero adjustment, it should be changed to range adjustment).
6. If it cannot be adjusted due to disorder, the middle tap of the input potentiometer can be placed at a position greater than 0% and less than 100% as a 4-20mA output for trial adjustment. After adjustment, it can be returned to 0% and 100% for correct adjustment.