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Current temperature sensor is introduced

current temperature sensor mainly through measurement on the current path resistance pressure drop to monitor current circuit ( Although there are other techniques, such as magnetic technology, but the discussion here is limited to parallel resistance current measurements) 。

a and by measuring the current temperature sensor output current is proportional to the voltage or current of the path. Thanks to it's widely used to measure current. Traditionally, the current sensor is mainly used for circuit protection and reports, but with the development of technology, current of induction as a means of monitoring performance and become increasingly important, and the purpose of monitoring performance is improved.

the difference between the voltage transformer and current temperature sensor detection current

current transformer, is the primary side large current, in proportion to fit through the instrument or use the relay, rated current 1 a to 5 a or the transformation of equipment. Its working principle and the transformer is similar.

1, a winding and high voltage circuit in series, only depends on the high pressure loop current, which has nothing to do with the secondary load.

2, secondary loop is not allowed to open, otherwise it will produce dangerous high voltage, endangers one's personal and equipment safety.

3, secondary loop must have some grounding directly, prevent after the primary and secondary windings insulation breakdown of high voltage, but only a little ground.

the current temperature sensor has the advantage of this structure is simple, accuracy and linearity of the measurement result is higher. Measurable dc, ac and all kinds of current waveform. But its measuring range, such as bandwidth is limited by certain. In this application, hall device is magnetic field detector, it detects the magnetic core air gap of the magnetic induction intensity. After current increase, core may reach saturation; With increasing frequency, magnetic core in eddy current loss, hysteresis losses, etc. It will rise. These will have an effect on the measurement accuracy. Of course, also can take some improvement measures to reduce these effects, such as choosing high saturation magnetic induction intensity of magnetic core materials; Made from multilayer magnetic core; Multiple hall element is used to test and so on.

the current temperature sensor and temperature sensor with different characteristics?

temperature sensor is able to be measured by rules and convert the available output signal according to certain rules to the sum of the device or devices, he is made up of two parts, namely, respectively is sensitive components and conversion components. The sensitive element refers to the temperature sensor can feel directly or part of the response is measured; Conversion element refers to the temperature sensor will be sensitive element in feeling or response is measured into electrical signal part of the suitable for transfer or measurement.

when the temperature sensor output is the standards prescribed by the signal, is known as temperature sensor.

temperature sensors is to convert the target signal to standard electrical instrument or equipment, the temperature sensor is a physical signal into electrical signal devices, physical signals used to speak, now there are other signal.

in general current temperature sensor output signal is consistent with the measured signal waveform, is proportional to the relationship. The current temperature sensor is on the basis of the current temperature sensor through adjustment of the circuit will originally followed signal transformation became with the original edge current proportional relationship to the size of the dc signal being measured ( Voltage or current signal) Such as, DC 4 - 20mA, DC 0- 5 v直流0 - 10 v signal, etc. The signal can be standard industrial control products such as PLC, RTU, DAS card, AD collection module acquisition received directly, so normally the auxiliary power supply current temperature sensor is also commonly used DC24V dc power to industrial market.