how to make test boxes: break out box, 4-20 ma simulator, and transducer tester
Post on 06-Jan-2017
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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.
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