DS18B20 temperature cable, transmission principle using DS18B20 single bus, multiple DS18B20 on a bus, in order to meet the needs of a line, multi point temperature measurement occasions, thus simplifying the single sensor wiring costs, not only easy to use, and the precision and other performance is good, can be used for long distance multi granary point temperature, cold storage temperature, room and other places.
HD-DS18B20Series of temperature sensorsDetails
The main parameters of DS18B20 components:
A single unique interface mode, DS18B20 needs only one line can be realized by microprocessor and DS18B20 two-way communication in connected with the microprocessor when.
The temperature range of 55 ℃ ~ +125 ℃, -10 ~ +85 ℃ accuracy is ± 0。5 ℃
The DS18B20 supports multipoint function, multiple DS18B20 can be connected in parallel in three online only, achieve network multi-point temperature measurement。 If the amount is too much, will make the power supply voltage is too low, resulting in the instability of signal transmission。
The working power supply: 3.0~5.5V/DC (data line parasitic power)
The DS18B20 does not require any external components in use, all sensor and conversion circuit are integrated into the shape of a transistor in integrated circuit
The programmable resolution is 9 ~ 12, the corresponding resolvable temperature were 0.5 ℃, 0.25 ℃, 0.125 ℃ and 0.0625 ℃, which can achieve high precision temperature measurement
The pressure features: power supply polarity reverse connection, the chip will not burn down because of the heat, but can not work normally.
When ordering, please inform the following parameters:
1 please inform the temperature measurement cable length and quantity or distribution of measuring point
2 the use of the environment
3 whether to match acquisition module
4 other custom