Resistance temperature detector is a kind of material made of resistance, it will change with temperature rise and resistance, if it along with the rising of temperature resistance also followed up is called positive resistance coefficient, if it along with the rising of temperature resistance decline is called negative resistance coefficient.
Most of the resistance temperature detector is made of metal, with platinum (
, * to stabilize the resistance temperature detector made - acid and alkali resistance, no deterioration, quite linear.
* by industry.
Pt100 temperature sensor
is a kind of platinum (
Of resistance temperature detector, belongs to the resistivity, its resistance and the relation between the temperature changes are as follows: R = Ro (
The alpha = 0.
00392, Ro is 100 Ω (
In the resistance value of 0 ℃)
, so T for the Celsius temperature of platinum resistance temperature detector, also known as PT100.
1 + 0.
255 + T / 1000。
2: when measuring Vo, do not tell any current, or measured value is no.
Industrial PC to define industrial Computer is industry control Computer, but now, more fashionable as industry or industrial Computer, English or IPC, full Industria Personal Computer.
Industrial PC popular said is specially designed for industrial field and the computer.
Industrial features, industrial control popular said is the computer that is designed for the industrial field, industrial field generally have strong vibration, dust much more special, otherwise characteristics such as high electromagnetic force disturbance, the continuous operation and factories are generally without rest in a year.
Therefore, industrial control compared with the ordinary computer must have the following features: 1)
Chassis adopts steel structure, have higher antimagnetic, dustproof, prevent shocks.
Chassis with special floor, floor with PCI and ISA slot.
Chassis with special power supply, power supply has the strong anti-interference ability.
Requires the ability to work continuously for a long time.
Note: in addition to the above characteristics, the rest are basically the same.
In addition, due to the above professional characteristics, with the level of industrial control on price than normal computer too expensive, but generally do not differ too much.
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The main products are PT100 temperature sensor, temperature sensor, humidity sensors, temperature transmitter, pressure sensor and so on.
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The , essentially perfected by custom thermistor, is one of the first home appliance to be widely distributed.
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