empowering creative people

High Temp Waterproof DS18B20 Digital temperature sensor + extras

SKU: ADA642

$25.00 AUD, inc GST
$22.73 AUD, exc GST
High Temp Waterproof DS18B20 Digital temperature sensor + extras
25 AUD

SKU: ADA642

$25.00 AUD, inc GST
$22.73 AUD, exc GST
2 reviews 0 5 5
In stock, with a short lead time. 109 units dispatch in 4 to 7 days (in addition to the shipping method you choose). Our timing and stock is accurate. Delivery to you by Wed, 4th of Oct with Express Post within Australia.
Shipping Offer

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 Adafruit have with a PVC cable because this one can be used up to 125°C - the limit of the sensor itself.

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.

Adafruit toss in a 4.7k resistor, which is required as a pullup from the DATA to VCC line when using the sensor. Adafruit 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.

Technical Details

Cable specs:

  • Stainless steel #316 tube 6mm diameter by ~30mm long (size of stainless steel capsule may vary!)
  • Cable is approx 3 ft long / 90cm 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

This product is listed in:

Documentation and Resources:

Product Comments


Customer Reviews

  1. Review by Peter verified purchaser
    Rating
    100

    Very high quality. Works great. Be careful as touching the metal coating to metal interferes with the temp reading. (Posted on 28/02/2017)

  2. Review by Jaimys verified purchaser
    Rating
    100

    This is the superior big brother to the ADA381, the primary reason being the ADA381 had issues with rusting in salt water, whereas this version appears more robust.

    I've hooked one up to a Raspberry Pi 2 to log temp data for one of my PhD experiments, and it works a charm. Python scripting is relatively easy to find online and modify too.

    10/10 - would sense temp again! (Posted on 25/05/2016)

We deliver Australia-wide with these options:

  • $3 for Small Items (4-6 days, not tracked, only available on selected small items)
  • $6.95 for Standard Post (2-4 days, tracked)
  • $8.32 for Express Post (1-2 days, tracked)
  • Pickup - Free! Only available to customers who live in the Newcastle region

International Orders - the following rates are for New Zealand and will vary for other countries:

  • $11.49 for Pack and Track (3+ days, tracked)
  • $16.50 for Express International (2-5 days, tracked)

If you order lots of gear, the postage amount might increment based on the weight of your order.

Our physical address:

Unit 18, 132 Garden Grove Parade
Adamstown
NSW, 2289
Australia

Please checkout our customer service page if you have other frequently asked questions such as "do we do purchase orders" (yes!) or "are prices GST inclusive" (yes they are!). We're here to help - get in touch with us to talk shop.