Termperature sensors are used today in many industrial and everyday environments for control and monitoring purposes. To make the most of your existing temperature sensors or to learn more about this sensing technology, Sensor Tips has provided the latest news and information for your reading pleasure.

Making High Temperature Rotation Measurements

Jeff Watson, a systems applications engineer in the High Temperature Strategic Marketing Group of Analog Devices, explains the high temperature measurements in ADI’s demo at Sensors Expo 2011 to Randy Frank.

With the 175°C rated ADXL206 accelerometer and the 210°C rated AD8229 instrumentation amplifier, rotation can be measured inside an oven.

For more information about Analog Devices ADXL206, dual-axis, high temperature accelerometer click here and for the AD8229 high temperature instrumentation amplifier, click here.

To watch the video, click here.

Industry’s Smallest IR Sensor in Action

Daniel Mar, a Product Marketing Engineer for Sensing Products at Texas Instruments demonstrates the TMP006 infrared temperature sensor to Randy Frank at Sensors Expo 2011. Using microelectromechanical systems (MEMS) technology and chip-scale plastic packaging, the sensor is the smallest (1.6 mm × 1.6 mm) non-contact temperature sensor available today.

For more information about Texas Instruments TMP006 infrared temperature sensor, click here.

To watch the video, click here.

A Single-Chip Passive IR Temperature Sensor

Measure Relative Humidity and Temperature Without Wires

Wireless is the must-have attribute for many of today’s consumer and industrial products. When you get two for one, so much the better. With Omega’s UWRH-2 wireless relative humidity transmitter users get both relative humidity and temperature measurements. The battery-powered unit transmits these readings as well as signal strength and battery status back to a host receiver up to 120 m (400’) away.

The unit’s temperature range is -17 to 49°C (2 to 120°F) with an accuracy of ±1°C (±1.8°F). The relative humidity range is 2 to 98% RH with accuracy from ±2.5 to ±3.5 % max depending on the temperature range

For more information about Omega’s UWRH-2 wireless relative humidity transmitter, click here.

Sense Temperature, Use Less Power in Less Space

Performing a function that you have previously done and consuming considerably less power is a goal for many system designers today. If the solution is crammed into even less space – so much the better. For temperature sensing that is the one-two punch that Texas Instruments delivers with its TMP103 digital temperature sensor.

The TMP103 draws a maximum of 1 µA while in shutdown mode and 3 µA while in active mode to extend battery life. Its active state power consumption is approximately half the power of the next closest competitor in shutdown state.

The two-wire IC is packaged in a four-ball wafer chip-scale package (WCSP) that measures only 0.76 mm x 0.76 mm. Capable of reading temperatures to a resolution of 1°C, the sensor’s two-wire interface is compatible with both I2C and SMBus interfaces and can support up to eight daisy-chained sensors.

For more information on TI’s TMP103 digital temperature sensor, click here.

Wireless Temperature Sensing Using SAW Technology

Sensors Provide Temperature Signals without an RTD Input Card

Integration that reduces system complexity is always a highly desirable goal. Turck’s TTM series are integrated miniature temperature transmitters.  The units have analog output that eliminates the need for specialized RTD PLC input cards. This saves both space and cost associated with these cards.  Stainless steel connections make the transmitters well-suited for food and beverage applications.

The series provide a 4-20 mA output using an integrated PT100 resistance temperature detector. The plug-and-play units come pre-scaled at 0 to 100°C, 0 to 150°C, -50 to 50°C, or -50 to 150°C.

Pick product from one of four pages to download pdf datasheet, click here.

Sensors Expo 2010 Exhibitors: Tellurex Corporation and Dexter Research

If you missed Sensors Expo or did not get a chance to check out all the exhibits, here is another of the interesting booths that I visited. Chuck Cauchy from Tellurex and Wayne Baer from Dexter Research explain each company’s role in developing an energy harvesting powered wireless sensor. To see the video, click the arrow link below.

For more information about Tellurex for thermoelectric solutions, click here.

For more information about Dexter Research for wireless sensing solutions, click here.

Ease Temperature Concerns: We’ll Call You

Adding to its USB, and Wi-Fi editions, Temperature@lert Cellular Edition monitors the ambient temperature in a server room or other critical area and alerts the user via email, telephone and text message when the temperature rises or falls outside of an acceptable range. The pre-calibrated digital temperature sensor is accurate to within ±0.5°C with a range of -40°F to +200°F. Plugging the Temperature@lert Cellular Edition into a power outlet initiates transmission of temperature readings over the AT&T and T-Mobile cellular phone networks to the company’s 24/7 monitoring system and dashboard website.

For more information on Temperature@lert Cellular Edition go to: http://www.temperaturealert.com/Remote-Temperature/Temperature-Alert-Cellular-Sensor.aspx

World’s Smallest Digital Temperature Sensor Ideal For Harsh Environments

With the new SHT21, Sensirion launched the world’s smallest digital humidity and temperature sensor. The SHT21 consists of a newly designed, sophisticated sensor chip  encapsulated in a 3x3x1.1-mm DFN 3-0 package. Over-molding provides excellent protection against aging and ambient impact, such as condensation and harsh environments, and thus yields outstanding long-term stability.

The SHT21 is fully calibrated and provides an I2C digital interface. Analog output modes (such as PWM) are available on request. The digital communication mode enables superb low power consumption: A value in the range of 3μW at normal operation is well achieved. Typical sensor accuracy is ±2% RH over 20–80% RH and ±0.3 °C over 25–42 °C. Provided on tape & reel, the reflow solderable SHT21 is suitable for high volume applications. Furthermore, the sensor is qualified in accordance with automotive standard AEC-Q100 and an extended quality assurance program guarantees low PPM values.

www.sensirion.com

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