How to measure a 4 to 20 mA Current Signal (Ultrasonic Level Lab

[@gabrielenriquemartinezllan9224]

What is the name of the software used to show the current measurements on the PC?

[@PeteVree]

Hi Gabriel, here is the first video for this lab: kzbin.info/www/bejne/d4PYmaaInaiGZqM The software is from the manufacturer of the Tough Sonic LVL-100 Ultrasonic Level Sensor: senix.com/chemical-liquid-level-sensors/toughsonic-chem-10/

[@gabrielenriquemartinezllan9224]

Thanks a lot, Pete!!!

[@gabrielenriquemartinezllan9224]

thanks alot, Pete!!

[@mohamedklileche7382]

That is the best Electronic Instrumentation workshop I have eve seen . Thanks for sharing. Toronto is awesome!!!!

[@kevin00861]

Dear Proff. Thank you so much for your detailed and comprehensive explanation! Yet, I kindly have this question please, which has need running in my mind since ever! If we measure the current value on the other wire going out from the Analog module, Will we get 4 to 20 mA or not ? I do highly appreciate your answer

[@raquelsapalaran2907]

THANK YOU for sharing your knowledge❤❤❤ please make more educational video ❤😊

[@gokulraveendran8241]

Hlo, why u didn't connect the + mA to Fluke's 400 mA terminal directly..Why you short it with other lead wire?

[@PeteVree]

That jumper has a 250 ohm resistor that I use to demonstrate to the students how to change a 4 to 20 mA signal to a 1-5 Volt DC signal

[@JohnDoe-kv4ef]

why is it that everytime i try to do troubleshoot sensors on site i get like 0.08ma reading but 90%RH (0%-100%) on a 4-20mA input

[@nvignesh59]

Why the resistor needs to be connected? Sorry for the dumb question.

[@PeteVree]

HI Vignesh, Thanks for the question. The resistor wasn't necessarily needed for this portion of the lab. However, in a later part of the lab, the resistor provides the specific load so that the 4 to 20 mA DC current can flow through the 250 ohm resistor and create a proportional voltage drop of 1 - 5 V DC, otherwise we have no means to change the current signal into a voltage signal.

[@nvignesh59]

Thanks for your reply. Really appreciate

[@trade1713]

@@PeteVree i don't get this part. Isn't the whole point of the video to measure 4-20mA current in the circuit? Connecting the multimeter in series would achieve this easily, considering the multimeter can precisely measure mA range. What has voltage amd resistor got to do now with attempted measurement of feedback from the sensor which is in mA?

[@trade1713]

@Sgt Brown sensor should regulate how much current flows through the circuit. Short is huge amount of current in short time. But sensor that measures a quantity of something should regulate mA.

[@buttonman1831]

​@@PeteVreeI was confused by that as well.

[@michaelsabatiii6052]

nice and easy. good job.

[@miguelitodoble6816]

hi pete, can i use this setup on my conductivity controller? i was planning to put a tower lamp 24vdc as an output but i wasnt sure were terminal i will connect it. BTw im using Burkert conductivity controller type 8619 thanks

[@sidharthjayakumar]

Is it possible to measure 4-20ma in parallel in ultrasonic transmitter

[@PeteVree]

The measurement I have shown is in Series. Have a look at the video at the following link to see how you can use a Fluke 773 Multimeter to take a non-invasive measurement of the 4-20 mA current: www.fluke.com/en-ca/learn/blog/electrical/how-to-measure-a-4-20ma-loop-signal

[@sidharthjayakumar]

@@PeteVree thx sir

[@ronaldstroupe9924]

If you add a resistor wouldn't that change the amps that you read at your meter?

[@PeteVree]

The transmitter accounts for the increased resistance by increasing the applied voltage to the circuit to maintain a constant current that reflects the process value.

[@ronaldstroupe9924]

Pete Vree thank you Pete, great videos I've learned so much from you much appreciated!

[@CaliVibe4U]

how to test it on the field

[@akarshkushwaha9109]

Thanks bro it was helpfull

[@mariovictoria8707]

Hello, can you share the location of the training center ?

[@PeteVree]

We are located in Toronto, Ontario, Canada

[@PeteVree]

I provided more information in response to your email. All the best Mario.

[@davidhaines4173]

Thanks Pete.

[@PeteVree]

There should be free t-shirts after every 50 views. Glad your enjoying the videos.

[@davidhaines4173]

Your fine teaching skills don't go without appreciation. FYI I have a mild learning disability and your high calibre presentations are going to help me pass my construction electrician IP Red Seal exam. ( Hopefully). I've passed the Alberta provincial journeyman exam recently, but the red seal will be icing on the cake. Thanks for all of the informative links on your website as well. Nice NASA t-shirt by the way Pete.

[@PeteVree]

Good luck! Here in Ontario we just write once and if you get above 70% you get your Red Seal.

[@arifniaz1149]

Why don't you say simple that u connected Ampere meter is connected in series

[@PeteVree]

I did. It just took me 9:37 to say it.

[@alisubahan2370]

So is it possible to measure any 4-20 mAanalog output signal (such as positioner, transmitter) ?

[@PeteVree]

Yes. Often an Instrumentation Tech. will be carrying a multimeter similar to this one: www.fluke.com/en-ca/product/calibration-tools/ma-loop-calibrators/fluke-789