How to Make: Break Out Box, 4-20 ma Simulator and Pressure Transducer Tester.

David Aakre Technologist

Test Boxes to Build

BREAK OUT BOX

ATTACH YOUR CABLE CONECTORS TO BOX

SOLDER TEST POINTS TO CONNECTOR. USE DIGITAL METER WITH TEST BOX TO MEASURE VOLTAGE,FREQUENCY, CURRENT AND SIMULATE 4-20 MA AND

FREQUENCY. TROUBLE SHOOTING JUST BECAME EASY.

4-20 Ma Simulator

4-20 Ma Simulator Diagram

SOLDER COMPONETS TOGETHER. LIGHT SWITCH IS INSTALLED TO SHOW POWER. YOU CAN BUILD WITHOUT SWITCH AND LIGHT. TEST POINTS ARE AN OPTION AS WELL. YOU WILL NEED A DIGITAL

METER SET ON DC MA CURRENT IN TEST POINTS TO MAKE THIS OPTION WORK. WITH THIS OPTION YOU WILL SEE THE 4-20 CURRENT AS YOU MOVE RESISTOR.

4-20 MA SIMULATOR WITH METER READING DC MILLIAMP CURRENT.

TRANSDUCER TESTER

You will need to know pin out on transducer. PIN A and D are calibration loop.

9 Volt battery is used to go through calibration loop on Pin A and D. Switch toggled will give transducer 20 ma calibration number on

Digital meter in DC current reading such as 19.8 milliamps.

Write Calibration numbers on Transducers such as 3.9 ma and 19.9 ma.

DAVID AAKRETECHNOLOGIST

Have fun building your test boxes.