Smart Temperature Acquisition System (SMTAS08)
Price: EUR 65.00
Shipping price up to 0.250 KOS: EUR 8.00
The Smart Temperature Acquisition System (SMTAS08) is an 8 channel temperature measurement system. It was designed to get the best possible temperature measurement results with the SMT160 Smartec temperature sensors. The SMT160 is a three-terminal integrated temperature sensor with a duty-cycle-modulated square-wave output signal (see the SMT160-30 Temperature Sensor page).
If the SMTAS08 board is equipped with the TO18 version of the SMT160 sensor, then an absolute accuracy of 0.7 °C is obtained. The resolution however is 0.02 °C !
The complete specification of the temperature sensor range is presented in the datasheet, which should be consulted in conjunction with the SMTAS08 manual. (You can download both below).
The SMTAS08 is equipped with a Microchip PIC16F876 microcontroller. An RS232 interface chip offers external serial communication with the microcontroller. In turn each of the sensors is powered by a corresponding processor output. An analog multiplexer (74HC4051), which is controlled by the microcontroller, selects one of the eight sensor outputs by connecting it to the microcontroller input port. The input is then sampled to measure the duty-cycle for this sensor (represented by two counter values, t1 and t2). This process is repeated for each of the sensors, after which the 8 values of t1 and t2 are sent to the RS232 port.
For controlling and reading the SMTAS08 board, a Labview program is available (see picture above) as well as a Visual Basic program. Both can be downloaded below. The PIC processor assembly program listing can also be found there.
Manuals, Software and Price List
SMTAS08MAN.PDF: Manual for the Smart Temperature Aquisition System for 8 sensors, January 2003
SMTAS08MANFR.PDF: Manual du Systиme Intelligent d'Aquisition de Tempйrature а 8 canaux, Janvier 2003
SMTAS08.ASM: Source code listing of the Assembly program in the PIC processor
SMTAS08.HEX: Listing of the object code in HEX format of the PIC processor program
SMTAS08LV.ARJ: PC software, Labview executable
SMTAS08VB.ZIP: PC software, Visual Basic application
Price List: all SMARTEC products Net prices
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