Quest Controls TELSEC MP1 User Manual page 12

3.4.3 Current Sensors
®
The TELSEC MP1 can read and scale any linear current input from 0 to 20 mA. An external 249 ohm
resistor (recommend 1% tolerance) is required to convert the signal to voltage. Twist the incoming
sensor wire and resistor together prior to insertion into the spring-loaded connector to ensure a proper
connection. Alternatively use a butt splice or similar device to connect the resistor and input wire
together and then feed a single wire into the input terminal. Contact Quest for the Input Scaling spread
sheet to determine the correct number for the Low and High Custom scale factors.
249 Ohm
Resistor
Figure 4 - Wiring a 4-20mA Sensor
©
Rev 3.0 9/15/22 - 7 - TELSEC MP1 User Guide