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Logistics cold chain Temperature Control
The DS18B20 temperature sensor uses a DS18B20 chip, has a working temperature range of -55°C to +105°C, a temperature accuracy of -10°C to +80°C, and an error of 0.5°C; it is made of three-core sheathed wire conductor and is packaged using epoxy resin perfusion.
The Features of DS18B20 Temperature Control System
| Temperature Accuracy | -10°C～+80°C error ±0.5°C |
|---|---|
| Working Temperature Range | -55℃～+105℃ |
| Insulation Resistance | 500VDC ≥100MΩ |
| Suitable | Long-distance Multi-point temperature Detection |
| Wire Customization Recommended | PVC sheathed wire |
| Connector | XH,SM.5264,2510,5556 |
| Digital Signal Output | high precision, stable performance, waterproof and moisture-proof |
| Support | OEM, ODM order |
| Product | compatible with REACH and RoHS certifications |
| SS304 material | compatible with FDA and LFGB certifications |
DS18B20 temperature sensor adopts DS18B20 chip, the working temperature range is -55℃～+105℃, the temperature accuracy is -10℃～+80℃, the error is ±0.5℃, the shell is made of 304 food-grade stainless steel tube, and it is made of three-core sheathed wire Conductor, epoxy resin perfusion packaging process; DS18B20 output signal is stable, the transmission distance is far from attenuation, suitable for long-distance multi-point temperature detection, the measurement results are serially transmitted in 9~12 digits, with stable performance, long service life, Strong anti-interference ability.
The Applications of Industrial Temperature Control
Industrial temperature control, wine cellar, air conditioner, flue-cured tobacco, granary, hatch room temperature controller.
The Driving Principle of Industrial Temperature Control System
The driving process of DS18B20 mainly relies on the 1-Wire bus system. This bus system can control one or more slave devices with one bus master device. Our MCU is the master device, and DS18B20 is always the slave device. All the slave devices on the 1-Wire bus system The sending of command or data follows the principle of sending the low bit first.
The 1-Wire bus system has only one data line and requires an external pull-up resistor of about 5kΩ, so the data line is high when idle. Each device (master or slave) is connected to the data line through an open-drain or 3-state gate pin. This allows each device to "free up" the data line, and other devices can effectively use the data line when the device is not transmitting data.
