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Видео на тему: Технологии и Эко Жизнь - видео

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Examples of outputs could be the position of a valve, a flow meter, temperature, pH, or ORP. Pretty much anything where you need to make a measurement that isn't simply on/off or good/not good. Examples of inputs could be a PLC, display meter, data logger, or a speed control on a drive. Where a 4-20 mA loop gets tricky is that you can have multiple input devices connected to an output as long as they are all in the loop. So say the input on the right is a PLC and someone wanted a local display. They would cut this wire then connect the plus of the milliamp output to the plus of the local display then connect the minus of the local display to the plus of the next input device. When troubleshooting a milliamp circuit your first inclination will be to grab your amp meter. It makes sense but this is made to measure big amps, in this ones case, big amps. We need to measure milliamps which is a much smaller meter. If you google “4-20mA meter” then you are going to come up with some expensive solutions such as this Fluke 772. But don't fret. You typical affordable meter such as this one https://amzn.to/3v4WCaI can measure a 4-20mA signal. One thing you must pay close attention to when testing a mA signal is down near the terminal post where it says fused. Nearly all volt meters are fused and the post common way to blow a fuse in a volt meter is when checking milliamps. I've heard of instructors that would give students a lower grade if they blew the fuse in their meters. Students, if this happened to you then sorry about your luck but trust me, you just got a valuable lesson that will help you in the real world. Instructors, if you are doing this will you please stop. If your budget doesn't allow for you have replacement fuses then call us and we will donate some to you. Now before we can understand how to prevent blowing fuses in our volt meter we need to understand how they get blown. So we take our positive terminal of our volt meter and connect it to the positive terminal of our mA output just like we typically would when checking voltage. Then we take the minus of our voltmeter and connect it to the minus terminal of our volt meter. When reading mA on our voltmeter there is a small fuse in the circuit and for our purposes there is no other resistance in the circuit so we are dealing with a short circuit. So the moment touch these two leads to the circuit we blow the fuse in the meter. In order to properly test a 4 to 20 mA loop you must be part of the loop. So instead of connecting it across the circuit you must remove one of the wires. It could the positive or the negative wire. Then connect your meter through the loop. Then your meter will only see between 4 and 20 milliamps preventing the fuse from blowing. Now we are ready to measure our milliamp signal. First we will turn our volt meter to mA, we'll make sure we have the leads in the proper position for measuring a milliamp signal, then we will turn on our SIM-ALP2 which will generate a 4-20 mA signal. https://plctools.com/products/plc-tools-sim-alp2-4-to-20ma-analog-simulator-and-0-10vdc-generator We will select a current source and we see that the black post is our common so we will connect it to our multimeters black lead and the red post is our PLC input or in this case the red lead of our meter.Hello Friends, aaj hum jis project per kam krenge vo hoga 12 volt bike/scooty battery repair kaise kre, hum bike ki battery recover krna sikhenge saath hi aap ko me ye bhi bta du ki es battery ko repair se aapko bike ki battery baar baar replace karne ke jhanjhat se chutkara mil jayega, to friends i hop ye video apko bahut pasand aayega. #bikebatteryrepair #Recover #Bike #Battery Thanks for watching dosto Other video link given below How to check mobile battery by multimeter ! मोबाइल की बैटरी कैसे चेक करें https://youtu.be/Czr0mnOaQGM How to Make Mini DC Motor FAN with 4 Volts Battery | dc motor se fan banaye | dc motor fan ideas https://youtu.be/xlRspZFWWoA मोबाइल से बिजली बिल कैसे चेक करे https://youtu.be/l1xDgdnIIlE बिजली बिल पर्ची में कैसे देखें https://youtu.be/UQfL52h6Hfk खराब चार्जर से इमरजेंसी लाइट बनाएं ! देसी जुगाड़ https://youtu.be/FJhU9h15DTs लोहे की कील को चुंबक 2 मिनट में कैसे बनाएं https://youtu.be/nQHrpb7_u88 बैटरी की ग्रेविटी कितनी होनी चाहिए ! घर बैठे चेक करें हाइड्रोमीटर से https://youtu.be/Wv2rig2aZXg चेंज ओवर की कनेक्शन कैसे किए जाते हैं ! How to make a changeover connection https://youtu.be/jZcz14LNKm8 खराब मोबाइल चार्जर कैसे रिपेयर करें घर बैठे | How to repair mobile chargers | https://youtu.be/yftlAZUVFCI single switch single socket Electric board connection || board kaise banayen https://youtu.be/5BOgi1fpzRI Electric board wiring connection || How to make an electric extension board https://youtu.be/nZ539Fa-WzY How to Check Ac Voltage with Multimeter || स्विच बोर्ड में || AC वोल्टेज कैसे चेक करें https://youtu.be/wshqjb5IFv4 #batterydischarge -Topic coverd in this video- battery ful charge hai kaise pahchane battery Kitni charge hai battery check karna sikhen multimeter se 12 volt battery kaise check Karen battery down hai yah charge hai kaise pata lagaen battery down hai charger Kaise Dekhen battery case check Karen lithium ion battery Kaise Dekhen battery ka voltage Kitna Hona chahie Jab battery 12 volt ki ho to kitne voltage Hona chahie battery ke andar kitne voltage hone chahie how to check battery by multimeter multimeter se battery kaise check Karen how to check battery Volt by multimeter how to check voltage of battery When battery discharge battery ful charge voltage battery discharge voltage Batra kaise check kare baitra check kaise kare how to repair bike bettery how to repair bike battery bike ki battery kaise theek kare bike battery theek ke baad kitni chalgi kya bike ki battery theek ho sakti h battery replacement battery repair battery kaise banate hain battery repair karne ka tarika battery repairing 12 volt battery ka carbon kaise hataye Disclaimer - Video is for educational purpose only. 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