CLAMP METER WORKS WITH THE PRINCIPLE OF HALL EFFECT..
basic principle of analogue clamp meter
Clamp the meter around the energized conductor that is connected to the load to be measured and read the amperage off of the dial face of the meter.
1)what is the relation of total dissolved solid and conductivity of water? 2)What is the difference of the conductivity of treated water and raw water?
Wattmeters are used for the measurement of dielectric power loss. It is also useful for the calibration of commercial forms of wattmeter and watt-hour meter in laboratories.
The working principle of an electronic energy meter is a device that measures the electronic energy consumed (usually in KWh). It is often incased in glass and has a disk that rotates that measures the amount of power (product of current and voltage) the flows through the meter. The rotation is then integrated over time either by mechanical dials or an electronic digital counter to determine the total energy used.To simplify reading, many modern ones also contain a type of radio transponder that can be interrogated remotely from the meter reader's vehicle so he/she no longer has to find, read, and write down the value on every meter on his route.
basic principle of analogue clamp meter
Continuity tester, volt meter, clamp on amp meter, megger and ohm meter.
Q-meter works on the principle of Series Resonance
D. Neon circuit tester. Page # 59 in your book.
http://en.wikipedia.org/wiki/Electricity_meter
Nutral wire can be measured by using clamp meter, if there is a current passing through the wire, we got a reading in the clamp meter i.e. 2A. If we clamp the earth wire by the clamp meter the reading will be zero.
this is good to know that there is a way i can find somthing usuful for mi studies
as a tester
how to use the Clamp-On Meter Model GCM-600 to find the current of a DC power?
With a continuity tester , found on most, but not all ,electrical test instruments(voltage meter).
A DC clamp meter works by measuring the magnetic field produced by the flow of direct current in a conductor. When the clamp is placed around the conductor, it detects the magnetic field and converts it into a direct current measurement. This measurement is then displayed on the meter's screen.
That is a sound pressure level meter (SPL meter).