Week 5 : Temperature Sensor ( LM 35 )

Week No : 5                                                                                                        Date : 23/2/2012

Title of Activity : Temperature Sensor ( LM 35 )

Objective :
1) To make sure low and high temperature detected.
2) To know how the sensor function.

Content / Procedure :
1) Research on website about sensor LM35.
2) Search on how to connect the LM35 with the project circuit.

Result / Analysis :
1) LM35 DZ is a precision IC temperature sensor.
2) The output voltage is linearly proportional to the ( ^oC ) temperature.
3) The LM35 DZ has an advantage over linear temperature sensor calibrated in ( Kelvin ), as the user is not required to subtract a large constant voltage from its output to obtain convenient centigrade sealing.

Conclusion :
1) This type of sensor can calibrated directly in ( ^oC ) and the linear is ( +10.0 mV/ ^oC ) scale factor.
2) The rated for full scale is ( -55 ^oC ) to ( +150 ^oC ) range.
3) This sensor can operates from ( 4V to 30 V ).
4) It has low self heating ( 0.08 ^oC ) in still air.

PICTURE DIAGRAM OF LM 35DZ

 

a) Example of heat sensor LM35 DZ













b) Schematic diagram of heat sensor LM35 DZ