Martel Electronics 235 - Manual (Page 64)

Application Notes
Calibration of mV to Current Converters
This example assumes a 10 to 50 mV input and a 4 to 20 mA output.
1. Connect as shown in Figure 1.
2. Select mA input.
3. Select mV output.
4. Enter 10 mV and adjust converter zero for 4 mA output.
5. Enter 50 mV and adjust converter span for 20 mA output.
6. Repeat steps 4 and 5 until both zero and span are within desired
tolerance.
Figure 1
Application Notes 230/235 59
mV/Current
Converter
OUTPUT
- +
INPUT
- +
Input 10-50 mV
Output 4-20 mA