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Sensirion Temperature/Humidity Sensor - SHT11

SKU: ADA246

$74.95 AUD, inc GST
$68.14 AUD, exc GST
Sensirion Temperature/Humidity Sensor - SHT11

SKU: ADA246

$74.95 AUD, inc GST
$68.14 AUD, exc GST

Retired Product

Replaced by: ADA1638
This product has been replaced by: ADA1638

Humidity is notoriously difficult to measure. Some of the scientific and electronic considerations to measuring humidity include: analog to digital interface and external circuitry which might require op-amps or oscillator circuitry; temperature compensation adjustments to calculate dew point; calibration against a known humidity source; mounting, protection and response time in the real-world. If you're interested in the details see Tracy Allen's web site (EME Systems) for his discussion.

The Sensirion SHT1x addresses many of these issues head on. It is a smart sensor for both humidity and temperature, and it comes from the factory in a tiny package that incorporates the analog to digital interface. All that your microcontroller has to do is read out the humidity and temperature values through the two-wire digital serial interface. The only math required is a simple scale and offset. The SHT1x is factory calibrated so that it returns temperature with a resolution of 0.01 degrees Celsius and relative humidity with a resolution of 0.03 percent. The accuracy is better than most other sensors too. Worst-case temperature accuracy is +/- 2 degrees C - but in the "room temperature" range the accuracy better than +/- 1 degree C. The relative humidity sensor is similarly accurate: +/- 3.5% in the range 20% to 80%. This is quite remarkable for a low-cost sensor. Excellent for commercial or home-based projects that require such readings.

Features:

  • Provides a fully calibrated, digital output
  • Measure temperature with a resolution of 0.01 degrees and within +/- 2 degree accuracy
  • Measures relative humidity with a resolution of 0.03%and within +/- 3.5% accuracy
  • Low power consumption (typically 30 μW)

Key Specifications:

  • Power requirements: 2.4 to 5.5 VDC
  • Communication: Two-Wire Serial
  • Dimensions: 0.43 x 0.49 in (11 x 12.5 mm)
  • Operating temp range: -40 to +254.9°F (-40 to +123.8°C)


Downloads & Resources:
Arduino Library
Sensirion Kit Documentation (.pdf)
Sensirion SHT1x Documentation and Source Code (.zip)
Sensirion SHT1x Data Sheet (.pdf)
Javelin Stamp Example Code (.zip)
N&V column "Environmental Sensing" #91 (.pdf)
N&V code "Environmental Sensing" #91 (.zip)
Sensor Objects for Propeller Programmers

Technical Details

Dimensions (inc. headers):

  • Length: 12.69mm/0.50in
  • Width: 11.16mm/0.44in
  • Height: 11.56mm/0.46in
  • Weight: 1.03g/0.04oz

This product is listed in:

Documentation and Resources:
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Product Comments

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)
  • $8.95 for Express Post (1-2 days, tracked)
  • Pickup - Free! Only available to customers who live in the Newcastle region (only after we email you to notify your order is ready)

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.