Shanxi hall current wireless temperature sensor price is recommended

Current selection reference temperature sensor element

1, what is the output, current or voltage, such as the output voltage is 4 v.

2, and accurately determine the temperature sensor, some need high accuracy, so emphasize accuracy when the choice, choose high precision current temperature sensor.

3, the specifications of the auxiliary power - Alternating current temperature sensor in order to accurately detect the change of input current current temperature sensor, and also to the dc signal output to the input current into a linear change, usually requires an auxiliary power supply for the current temperature sensor working power supply, such as power supply voltage of power supply voltage, + 15 v.

current temperature sensor how to correctly use the

using the environment

current temperature sensor, the hall current temperature sensor using the environment should be no conductive dust and no corrosive action on metals, and damage the insulation gas exists. Otherwise due to the conductive dust with objects in a secondary circuit, or secondary side short circuit between power supply and signal, burn out temperature sensor.

the environment temperature

will be stipulated in the specifications of the temperature sensor temperature sensor working environment temperature range, such as. . . 40 ~ 85 degrees, depending on product model has a certain difference. Not recommended over the temperature range specified in the specifications, more than the normal work of the temperature sensor temperature range, the internal part of the device will reduce performance due to the temperature characteristic, a precision is reduced, the output signal is not accurate, or unable to work, and so on and so forth.

temperature sensor installed in the ventilation and heat dissipation good place, as far as possible to avoid high temperature affect the measuring accuracy of the temperature sensor and life.

the elevation

usually temperature sensor, when the design will consider altitude, in general, is 2000 meters. Elevation 2000 meters, but not only apply if the actual use of more than 2000 meters above sea level, mainly affect the temperature sensor cooling and insulation performance. Can reduce insulation properties, although but can be by way of external insulation to improve, but hard to implement also will increase the cost, in the actual selection and use can be reference to IEC 60664 - 1 the provisions of the standard for derating use, specific see the corresponding table A. Derating factor of 2. Heat dissipation problems may, by way of forced air cooling, it is relatively easy to solve.

current temperature sensor characteristic parameters on the motor protection

1, the temperature sensor voltage VA.

the VA means the power supply voltage, pay attention to the power supply voltage should not exceed the prescribed values, if more than a specified value can lead to equipment detection performance is low, or equipment can't normal operation.

2, the standard rating ISN IPN and rated output current.

in general current IPN value of the temperature sensor is the detection rating, different models is different, ISN refers to the rated output current, output current usually between 100 ~ 400 m current temperature sensor A, when trying to choose need to choose according to need.

3, overload.

the overload ability of the actual current temperature sensor, when more than current overload condition, the original and current will increase, while the overload of the actual value, but will not affect to equipment.

4, Ipmax measuring range.

Ipmax means to measure the current value, this value is usually higher than that of IPN, users need to pay attention to when choosing a current temperature sensor belongs to the single-phase power supply, power supply voltage it is 2 times of bipolar power supply voltage.

5, precision.

the precision of the equipment, is also considering a big general accuracy directly and standard rated current is related.