Sensor Measures Temperature/Humidity

Claiming position as the industry’s first digital humidity and temperature sensor, the SHT11 integrates a humidity sensor, temperature sensor, calibration, a/d converter, and digital interface on a single surface-mount chip. Measuring 7.5 mm x 5 mm x 2.5 mm, the sensor provides a two-wire interface to microprocessors without external components. Features include interchangeability without recalibration, capacitive humidity sensing from 0% to 100%, a temperature range from -40°C to 120°C, accuracies of ±3% RH and ±0.5°C, a power consumption of less than 0.5 mA, response time of less than 4s, and a long-term drift and stability of less than 1% RH/year. In addition, the sensor is said to exhibit complete immunity to condensation and immersion. For further details, call Randolph C. Bush at ELAN TECHNICAL CORP., Fairfield, CT. (888) 840-2011.