Sourcing and Simulating 4-20mA Loops

This video tutorial provides a comprehensive guide on using the Fluke 789 process meter for sourcing or simulating 4-20mA loops. It explains the difference between sourcing and simulating modes, and provides step-by-step instructions for both processes. The video also covers the auto sinking feature of the Fluke 789, which is useful for working on 0-20mA or 4-20mA loops. Additionally, it offers tips on identifying the setup of a 4-20mA loop and provides information on other modes of the meter, such as continuity and voltage. The video concludes with a call to action for viewers to check out additional resources and support the channel.

What is the primary use of the Fluke 789 process meter?

• Testing resistance

• Sourcing or simulating 4-20mA loops

• Measuring voltage

• Measuring temperature

What is the difference between sourcing and simulating modes?

• Simulating provides power to the loop, sourcing does not

• Both modes provide power to the loop

• Neither mode provides power to the loop

• Sourcing provides power to the loop, simulating does not

What should you do first when sourcing a 4-20mA loop powered by the transmitter?

• Connect the red probe to the meter

• Isolate the transmitter loop and disconnect the transmitter

• Put the meter into mA loop power mode

• Connect the black probe to the meter

In sourcing mode, where should the red probe be connected?

• To the mA output port

• To the common port

• To the left loop power port

• To the ground

What is the final step in sourcing a 4-20mA loop?

• Isolate the loop

• Connect the black probe to the common port

• Deisolate the loop

• Put the meter into mA manual mode

What mode should the meter be in when simulating a loop powered by the input card?

• mA manual mode

• Voltage mode

• mA loop power mode

• Resistance mode

Where should the black probe be connected when simulating a loop?

• To the ground

• To the common port

• To the left loop power port

• To the mA output port

What functionality does the Fluke 789 offer for working on 0-20mA or 4-20mA loops?

• Auto temperature compensation

• Auto resistance measurement

• Auto voltage detection

• Auto step functionality

How can you determine if a loop is in source or simulate mode?

• Measure the resistance in the loop

• Check the temperature of the transmitter

• Test for voltage on the transmitter head and input card

• Check the current on the input card

What should you always check before working with electricity?

• The current settings

• The resistance

• The voltages you are working with

• The temperature