If you do smoke frequently, expect to test positive on a marijuana drug screen for anywhere from 3 weeks to almost 2 months. If you smoke everyday or several times a day, you can test positive for 2 months or more. Detection times also vary depending upon your weight, metabolism, and other person factors.
Definition: A transducer is a device that converts one form of energy â typically a signal â into another. Example: A speaker is a type of transducer that converts electrical energy (the audio signal) into mechanical energy (vibration of the speaker cone/diaphragm).
Transducer - The conversion of energy from one form to another is known as Transduction. A transducer serves for this purpose. Now why there is confusion is that, A Sensor can sense in any form(usually electronic) i.e due to some mechanical change, it can react in electrical form. Thus there is a conversion, similar to that of a transducer. A classic example would be a thermocouple. Or a pressure sensor which might detect pressure and convert it into electric current (3-15psi to 4-20ma) A Transducer is more than a sensor. It consists of a sensor/actuator along with signal conditioning circuits.