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What does 4 to 20 milliamps mean?

Updated: 12/20/2022
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4-20 milliamps refers to a standard analog signal that is used in many instrumentation circles. For example a tank level transmitter will send a 4 milliamp signal when the tank is empty and a 20 milliamp when the tank is full. 12 milliamp would indicate 1/2 full. Anything less than 4 milliamps is considered a broken wire or failed powersupply. This is the standard often used in the US. Germany often uses 0 to 20 millamp signals.

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Q: What does 4 to 20 milliamps mean?
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A flow transmitter range is 0 to 2500mmH2o How many Milliamperes on 1250mmH2o?

Your total milliamp range is 4 to 20 milliamps. 4 Ma being 0mmH2o and 20 Ma being 2500mmH2o. So 1250mmH2o is 50% which is equivalent to 12Ma signal.


Is 4 kv and 30 ma be lethal from dry hand to hand?

30 ma will not hurt you but 4 kv or 4000 volts will certainly kill you for it will push far more than 30 ma through your body-wet or dry! <<>> Taking any amount of AC voltage from hand to hand is dangerous. This is because the path the voltage takes is across the chest in the location of your heart. Small voltages can stop the heart from beating. Milliamps are dangerous and will hurt you as shown below; Less than 1/2 milliamp no sensation 1/2 to 2 milliamps Threshold of perception 2 to 10 milliamps muscular contraction 5 to 25 milliamps painful shock (may not be able to let go) Over 25 milliamps Could be violent muscular contraction 50 to 100 milliamps Ventricular fibrillation over 100 paralysis of breathing.


How much of ampere can kill?

Milliamps are dangerous Less than 1/2 milliamp no sensation1/2 to 2 milliamps Threshold of perception2 to 10 milliamps muscular contraction5 to 25 milliamps painful shock (may not be able to let go)Over 25 milliamps Could be violent muscular contraction50 to 100 milliamps Ventricular fibrillationover 100 paralysis of breathing. possibily 1-2Amp/s can make your heart stop. and kill you. Not the amount of voltage


What is voltage divided by milliamps?

kilohms.


Why is a GFCI receptacle set for 5 milli-Ampere?

Milliamp dangersLess than 1/2 milliamp no sensation1/2 to 2 milliamps Threshold of perception2 to 10 milliamps muscular contraction5 to 25 milliamps painful shock (may not be able to let go)Over 25 milliamps Could be violent muscular contraction50 to 100 milliamps Ventricular fibrillationover 100 paralysis of breathing. You can see above, if the circuit was not disconnected the damage that milliamps currents can cause. 2 to 10 milliamps will cause muscular contraction but the circuit is opened in 1/40th of a second so that no damage will be caused. The electronic metering of the current at a level of 5 milliamps (.005 amps) was picked by convention as a safe level to trip the breaker. If there is a difference of 5 milliamps of the current entering the circuit and leaving the circuit, the logic states that the current must be going some place else which could be detrimental to someones health, so the breaker shuts off the current to the load.

Related questions

What does 900 mA mean?

900 milliamps.


How much is 4 milliamps?

There are 1000 milliamps (mA) in 1 Amp, so the answer is 4000.


How many milli amps are dangerous?

Less than 1/2 milliamp no sensation 1/2 to 2 milliamps Threshold of perception 2 to 10 milliamps muscular contraction 5 to 25 milliamps painful shock (may not be able to let go) Over 25 milliamps Could be violent muscular contraction 50 to 100 milliamps Ventricular fibrillation over 100 paralysis of breathing.


A flow transmitter range is 0 to 2500mmH2o How many Milliamperes on 1250mmH2o?

Your total milliamp range is 4 to 20 milliamps. 4 Ma being 0mmH2o and 20 Ma being 2500mmH2o. So 1250mmH2o is 50% which is equivalent to 12Ma signal.


How do you write 0.026 in milliamps?

The answer depends on the units which were used for 0.026. For example, 0.026 milliamps would be 0.026 milliamps while 0.026 microamps would be 0.000026 milliamps.


What does the difference of 20 and 4 mean?

20 - 4 or 4 - 20 , whichever is not negative. In this case it is 20 - 4 = +16


How many milliamps in 1.7 amps?

1 amp = 1000 milliamps so 1700 milliamps = 1.7 amps.


How many amps are in 20 ma?

ma stands for milliamp. The prefix 'milli is equivalent to .001 So 1 amp would be 1000 milliamps and 20 milliamps would be .02 amps


What is - 20 - 4?

If you mean: 4/20 then it is 1/5 in its simplest form


What is the max output current rating of a Programmable Logic Control?

It depends on the specification of the PLC. One with a fanout of 10 into a standard TTL load can sink 16 milliamps and source 4 milliamps.


How many milliamps in 12 watts?

There are zero milliamps in 12 watts.


How many amps is 75 milliamps?

There are 0.075 amps in 75 milliamps.