Digitálny snímač teploty DS18B20 – Programovateľné

Toto je vlastná 1-káblová a vodotesná verzia snímača DS18B20. Praktické, keď potrebujete zmerať niečo ďaleko, alebo vo vlhkom prostredí. Using the digital temperature sensor DS18B20 from Dallas Semiconductor and the high thermal conductivity sealant potting, the temperature sensor is highly sensitive and has a small temperature delay. Snímač teploty podporuje “1-Drôt” rozhranie (1-Drôt), a teplotný rozsah merania je -55 ℃ ~ + 125 ℃. In the range of -10℃~+85℃, the accuracy is plus or minus 0.5 degrees Celsius. The field temperature is directly transmitted in a digital way of “1-Drôt”, which greatly improves the anti-interference ability of the system. They work great with any microcontroller using a single digital pin, and you can even connect multiple ones to the same pin, each one has a unique 64-bit ID burned in at the factory to differentiate them. Usable with 3.0-5.0V systems.

Programovateľná sonda digitálneho snímača teploty DS18B20

OD 6 * 30 mm rúrka z nehrdzavejúcej ocele UL2547 kábel DS18B20 digitálny snímač teploty

DS18B20 temperature sensor -55℃ ~ +125℃ Power supply 3.0V-5.5V

It is suitable for field temperature measurement in harsh environments. DS18B20 digital temperature sensors all have unique numbers, and the temperature acquisition equipment uses the number to identify the corresponding temperature sensor.

The only downside is they use the Dallas 1-Wire protocol, which is somewhat complex, and requires a bunch of code to parse out the communication.

We toss in a 4.7k resistor, which is required as a pullup from the DATA to VCC line when using the sensor. We don’t have a detailed tutorial up yet but you can get started by using the Dallas Temperature Control Arduino library which requires also the OneWire Library.

Cable specs:
Stainless steel tube 6mm diameter by 30mm long
Cable is 36″ long / 91cm, 4priemer mm
Contains DS18B20 temperature sensor
If your sensor has four wires – Red connects to 3-5V, Black connects to ground and White is data. The copper wire is soldered to the wire shielding
If your sensor has three wires – Red connects to 3-5V, Blue/Black connects to ground and Yellow/White is data

DS18B20 Technical specs:
Usable temperature range: -55 to 125°C (-67°F to +257°F)
9 do 12 bit selectable resolution
Uses 1-Wire interface- requires only one digital pin for communication
Unique 64 bit ID burned into chip
Multiple sensors can share one pin
±0.5°C Accuracy from -10°C to +85°C
Temperature-limit alarm system
Query time is less than 750ms
Usable with 3.0V to 5.5V power/data

Vlastnosti:
·High-quality stainless steel tube packaging, vodotesný, odolný proti vlhkosti a hrdzi
·Stainless steel head lead length 1 meter, steel tube 6*50mm (lead length is 1 meter, 2 meters and 3 meters in stock, možno prispôsobiť podľa potrieb)
·Each probe is individually packaged after strict testing
·3.0V~5.5V power supply
·9~12-bit adjustable resolution
·Wide temperature sensing range -55℃ ～ +125℃ (lead can only withstand a temperature of about 85 stupňa)
No external components are required, unique single bus interface
···DS18B20’s sealing glue is hard glue, and the wire is pure copper lead (not aluminum-plated copper);
The probe uses an imported DS18B20 temperature sensor chip, and each pin of the chip is separated by a heat shrink tube to prevent short circuits, and the internal sealing glue is waterproof and moisture-proof.