How To Use a Process Meter - (5 Step Guide to Source / Simulate 4-20mA)

In this video I show you how to use a process meter to source or simulate 4- 20 mA using a fluke 789 process meter on Instrumentation loops.

I also talk about the different modes and how to determine the setup of aa current loop.

In this video, I’m going to show you an easy to follow 5 step guide to using a fluke 789 process meter - for sourcing or simulating 4-20mA loops, perfect for a whole host of instrumentation calibration and fault finding needs.

Quickly, before we move onto to the steps on how to use the fluke 789. we should discuss the difference between sourcing and simulate modes.

Transmitters and other sensors that give 4-20mA signals are connected to a plc or other input device that reads the current within the loop. These current loops are usually 24v DC powered.

These Instrumentation loops can be either have the 24Vs powered from the input card or the transmitter is externally powered and it provides the 24Vs for the loop power.

When using a process meter in place of transmitter to test a loop you will need to use it in a different mode depending on what is powering the loop.

If the transmitter was supplying the loop power, you’ll need to source the loop.

If the input card or isolator is powering the loop, you’ll need to simulate the loop.

Lets now lets look at the steps you’ll need to source or simulate, afterwards I’ll go through a few tips how to identify how a 4-20mA loop is setup so you will know what mode to use.

Remember electricity is dangerous, so only work on equipment you are competent to do so! And always check the voltages you are working with.

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[karaouilaredj]

No music
Clear
Simple
And no much talk.
👍

[kenyattafrazier]

I just started an apprenticeship in which I thought I’d be doing nothing but electrical work but instrumentation is a huge huge part of what we do. I came from a commercial and residential background so this industrial stuff is so new to me. So much to learn about these instruments it seems

[kevin]

Wooow, thanks a million times,
that was very explanatory, simple and straight to the point

[leef]

Another useful & informative video. Keep up the nice work!

[mdmclaughlin]

Could you do a tutorial using a Hart 475 with a Fluke simulator and press pump to do loop tests/simulations and calibrations on Rosemount flow, pressure, level and temp?

[iamsupercoolish]

This is excellent! Thank you for this.

[InstrumentationControl]

▶▶Check out brilliant T-shirts / Merch at my store:

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[fltp]

Hi Bro, may I know what is the software you use to produce all this fantastic videos? Your videos are wonderful and full of values. Thanks.

[angelstain]

I've been a Industrial electrician for about 9 years but want to jump to being a instrument tech.. how can I start about that ?

[mauricethegecko]

Can this meter source/simulate 0-10vdc control loop systems? Does it have a 250 or 500 ohm resistor in it? 250 0-5vdc or 500 0-10vdc?

[uzairasif]

Sir can we connect single 4-20 ma to 2 sources?(i mean from single 4-20ma can we run 2things?)

[BoandBeceadventures]

Thanks I’m trying to decide on a new meter. What’s the main differences between the 789 and 117 mentioned here please?

[Trudeautthebestt]

BUT WHAT ABOUT THIS >>>...You must need to connect negative terminal of transmitter to 400 mA(red probe) terminal and common probe to negative terminal of power supply to measure mA value.