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Current temperature sensor using the matters needing attention

( 1) The better precision of current voltage temperature sensor is under the condition of the original edge rating, so when the measured current is higher than the current rating of temperature sensor, should choose the corresponding big temperature sensor; When the measured voltage is higher than the voltage rating, temperature sensor should readjust current limiting resistor. When the measured current is lower than the rating of 1/2 below, in order to get a better precision, can use more than the number of circle.

（ 2) Insulation withstand voltage of 3 kv temperature sensor can work for a long time in communication system and 1 1 kv and below. Dc system, 5 kv and below 6 kv temperature sensors can work for a long time in communication system, and 2 kv and below 2. Dc system 5 kv and below, be careful not to use overpressure.

the current temperature sensor input and output connection mode

from the original edge access points have

( 1) Amount of contact measurement, measuring both must access to the temperature sensor, temperature sensor is a string into the original edge in the circuit. Voltage temperature sensor, some small 5 a current temperature sensor and temperature sensor are all contact measurement.

（ 2) Non-contact measurement: to measure the amount of both without breaking the original edge circuit through the temperature sensor can be. Current temperature sensor are non-contact measurement.

in order to fit for the use of all kinds of complicated environment, the group module shielding type of temperature sensor and the strong electromagnetic interference, heads temperature sensor for temperature change range wider environment use.

overview of current temperature sensor

current temperature sensor in the application of the motor ( 电流传感器) Is a commonly used in motor drive temperature sensor, the output signal is used as a function of protection, feedback, no temperature sensor in the motor control, current temperature sensor is the indispensable element.

temperature sensor output signal is the voltage type and current mode, the design of the interface circuit is also different. Current output, the resistance of the concatenated certain scope, the current into a voltage. Some type of temperature sensor with bipolar power supply, the converted voltage is bipolar. Before sent to the microcontroller, the need to level ascension and amplified.