High Temp Waterproof DS18B20 Digital Temperature Sensor - 3m long

PRODUCT ID: 3846
$21.95


QTY DISCOUNT
1-9 $21.95
10-99 $19.76
100+ $17.56
  • Description

    Description-

    This is a pre-wired and waterproofed version of the DS18B20 sensor made with a PTFE wire cable. Handy for when you need to measure something far away, or in wet conditions. This sensor is a little more expensive than the other waterproof version we have with a PVC cable because this one can be used up to 125°C - the limit of the sensor itself. That said, it's still not recommended for salt-water or corrosive environments since the stainless steel will eventually rust!

    Because the sensor signal is digital, you don't get any signal degradation even over long distances! These 1-wire digital temperature sensors are fairly precise (±0.5°C over much of the range) and can give up to 12 bits of precision from the onboard digital-to-analog converter. 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.

    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. If you want something really simple, and you have an analog input pin, the TMP36 is trivial to get going.

    You'll need a 4.7k resistor which is required as a pullup from the DATA to VCC line when using the sensor. Here's a CircuitPython/Python guide for these sensors. We don't have a detailed Arduino tutorial, but you can get started by using the Dallas Temperature Control Arduino library which requires also the OneWire Library.

     

     

    https://www.youtube.com/embed/Zzhqn1K7OwQ?start=193

  • Technical Details

    Technical Details+

    Cable specs: 

    • Stainless steel #316 tube 6mm diameter by ~30mm long (size of stainless steel capsule may vary!)
    • Cable is approx 3m long / 300cm long
    • Contains DS18B20 temperature sensor
    • Three wires - Orange Stripe connects to 3-5V, White connects to ground and Blue Stripe is data.

    DS18B20 Technical specs:

    • Usable temperature range: -55 to 125°C (-67°F to +257°F)
    • 9 to 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

    DS18B20 Datasheet

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