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Temperature Sensors

ICT International manufactures a range of "smart" temperature sensors for various environmental applications ranging from measurement of ambient conditions and crop temperature monitoring, to cattle comfort (heat stress) analysis. Standard sensors use a miniature diode-connected transistor sensor mounted either at the end of a 4mm thick stainless-steel tube, projecting from the electronic sensor housing, or on an extension cable for attachment to plants or tree canopies. Other non-standard sensor types such as thermocouples, RTDs and precision quartz sensors are available for high temperature, process and laboratory applications. The sensing element is connected to a microprocessor-controlled electronics package and provides an output in 0.01^oC steps in low-resolution mode. A higher resolution providing steps of 0.002^oC is available with appropriate sensors. Resolution depends on the type of sensor and the span selected. (Note: The resolution figures quoted above are for standard configurations only).

Accuracy and resolution

The microprocessor in every ICT temperature sensor provides a variety of features such as control and alarm outputs, 16-bit resolution (1 part in 65,000) and dual output signals. Each unit is provided with a multi-point calibration curve for maximum accuracy across the range.With most systems, changeover of a sensor requires either re-calibration of the system or resetting of parameters in the data logger or other data collection devices. ICT's "smart" sensors eliminate this requirement as the on-board microprocessors in each ensure all sensor types exhibit the same electronic specifications and therefore, identical performance. All ICT sensors conform to global algorithm in all output modes, and for operation in digital, voltage or current mode, sensors are supplied with individual calibration certificates to enable software conversion to engineering units. In serial mode, the sensor reports in engineering units and the global algorithm is implemented internally.

Applications	Features
Temperature measurement	Low power consumption
Automatic weather stations	Stainless-steel housing
Horticulture and agriculture	Weatherproof construction
Atmospheric pressure monitoring	Robust design
Meteorology	Frequency, voltage or serial data output
Micro climate studies	Dual control/alarm-output
Laboratory - high accuracy	Multiple calibration points
Equipment control	Independent/stand-alone operation
Animal and human comfort	Customer configured alarm/control set-points