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Temperature, pressure, humidity, flow – all this you have under control with the Sensirion components, the top quality Swiss producer. 

CMOSens technology and other innovative technologies of company Sensirion enabled production of top quality calibrated sensors with a long lifetime. As you may have read in our articles:

•  New sensors Sensirion will take you only 3x3mm on PCB!
•  Professional humidity and temperature measuring with calibrated sensors Sensirion
•  Professional solution for accurate measurement of humidity and temperature

or other. Sensirion sensors in fact aren´t sensors but ready-made solutions with a sensor, preamplifier, AD converter and a communication interface. The result of this concept is high disturbances immunity, high accuracy, saving of components and a simplified development.

Compendious description of Sensirion components can be found in the Sensirion sensor solutions,  Humidity and temperature sensors and Differential pressure sensors flyers.

The world’s smallest humidity and temperature sensor was introduced at Electronica 2012 by Sensirion, setting new standards for size and power consumption.

The SHTC1 sensor is designed for mobile deices, measuring 2 x 2 x 0.8 mm. Based on the company’s CMOSens Technology, the sensor and signal processing electronics are combined on a single silicon chip.

The devices measure relative humidity over a range of 0 to 100 %RH with a typical accuracy of ±3 %RH. The temperature measuring range is -30 to +100 °C with a typical accuracy of ±0.3 °C. Fully calibrated, the sensor has a digital I²C interface, and is suitable for reflow soldering. This makes it compatible with standard industrial mass production processes for electronic modules. Contact company for pricing and availability.

World’s smallest humidity and temperature sensor - [Link]

raph @ raphnet.net writes:

USBTenki is an electronic project to interface sensors to an USB port for collecting weather related data such as temperature. The firmware supports many different sensors and interfaces. It is up to you to decide what your USBTenki will support.

USBTenki: USB Temperature sensors and more - [Link]

To be able to quickly test a suitability of a sensor for a given application will appreciate perhaps every designer. For this purpose company Sensirion brings an evaluation USB kit EK-P3.

EK-P3 is usable with digital output pressure sensors of SDP5xx, SDP6xx and SDP7xx series. Kit EK-P3 enables literally within few minutes to test a sensor in a given application and to display measured values by a viewer software, which is available on the Sensirion website. Software allows selecting all available resolutions, absolute or relative timing and also to freely choose a sampling time. Output signal can be displayed as linearized or raw data. It is possible to log and save data (CSV), or to export to Excel format.

Kit EK-P3 consists of a USB dongle with I2C to USB converter, sensor cable and the SDP610 digital output pressure sensor. Detailed information will provide you the EK-P3 datasheet.

Simplify development of applications with Sensirion pressure sensors - [Link]

embedded-lab.com writes:

Measurement and control of temperature and relative humidity finds applications in numerous areas. These days devices are available which have both temperature and humidity sensors with signal conditioning, ADC, calibration and communication interface all built inside them. The use of such smart sensors greatly simplify the design and reduces the overall cost. We discussed in past about Humidity and temperature measurements with Sensirion’s SHT1x/SHT7x sensors. These sensors are capable of measuring both temperature and relative humidity and provide fully calibrated digital outputs. While  SHT1x/SHT7x are very accurate sensors, they are still expensive for hobbyists use. This articles discusses the DHT11 sensor which also provides calibrated digital outputs for temperature and humidity but is relatively lot cheaper than the Sensirion sensors. The DHT11 sensor uses a proprietary 1-wire protocol which we will be exploring here and implementing with the PIC16F628A microcontroller that will receive the temperature and humidity values from the sensor and display them on a 16×2 character LCD.

Measure temperature and humidity using DHT11 sensor and PIC - [Link]

Calibrated humidity and temperature sensors Sensirion SHT21, SHT25 and STS21 excel by very small dimensions. Thanks to their miniature size and a very low power consumption, you can use them even in small portable devices.

Sensors SHT21, SHT25 and STS21 with I2C digital output belong to the SHT product line, with the CMOSens technology of swiss company Sensirion. SHT21 and SHT25 measure relative humdity and temperature, STS21 measure only temperature. With a new CMOSens chip, reworked capacitive type humidity sensor and the improved band-gap temperature sensor they feature excellent properties. They have very similar and in some aspects even better properties than SHT1x and SHT7x sensors. Also these sensors belong to high quality CMOS sensors, which contain all elements of the measuring chain on one chip: humidity and temperature sensor, precise supply, low noise linear amplifier, AD converter and interface. Inspite of very compact dimensions also SHT21 and 25 sensors remain resolution of 12 bits for relative humidity and 14 bits for temperature. Temperature sensor STS21 has also a 14 bit resolution and a user can choose by a command the resolution of 14, 13, 12 or 11 bits.

I2C interface enables a very simple communication with a host microcontroller, in a Hold/ No Hold Master mode. Defaultly sensors have the same I2C adress set from production. Upon request it is possible to provide sensors with various adresses from producer. STS21 is fully compatible with SHT2x but it has a different I2C address. This enables to use sensor STS21 in applications where humidity measurment is optional and enables to use the same hardware.

New sensors Sensirion will take you only 3x3mm on PCB! - [Link]

Sensirion’s SHT series of humidity sensors provide fully calibrated digital readings for relative humidity and temperature. This tutorial explains how to interface two of these sensors (SHT11 and SHT75) to PIC microcontroller.

Humidity and temperature measurements with Sensirion’s SHT1x/SHT7x sensors – [Part1]+[Part2]

This project is a wireless temperature and humidity sensor with USB interface based on obdev’s RemoteSensor example and their firmware-only USB implementation. The main change is the replacement of the analog sensors with a Sensirion SHT11 digital temperature and humidity sensor. The sensor unit consists of an ATTiny45 microcontroller, a SHT11 sensor, and a hoperf RFM12 868 MHz transceiver module. Check details on the link below.

Wireless temperature and humidity sensor with USB interface – [Link]

crazyrobotsoftware.com writes : As an educational experiment, I decided to build a small temperature sensor, and data logger. Since I have little experience with direct Analog to Digital (A->D) converters, I decided to start out with a little more “meaty” hardware. I used a Basic Stamp II (BOE) BS2-IC microcontroller to capture temperature using a Sensirion Temperature and Humidity Sensor, and display using a 2×16 Serial Display. [via]

PIC Microcontroller Temperature Sensor - [Link]