Tgs 813 Lab Report
TGS 813 is a general purpose Sensor that has good sensitivity characteristics to a wide range of gases. This device is designed to operate with a stabilized 5V heater supply and a circuit voltage depends on the design. The most suitable application for the TGS 813 is the detection of carbon gases, which makes it an excellent Sensor for gas leak detectors.
The initial stabilization time of the TGS 813 is very short and the relative and elapsed characteristics are very good over a long period of Operation. TGS 813 has a very low sensitivity to 'noise-gases’, which considerably reduces the Problem of nuisance alarming. The TGS 8813 is most practically employed in a circuit design, which maintains circuit voltages at fixed value of 5V. This voltage …show more content…
The semiconductor material and electrodes are deposited on a ceramic tubular former. The heater coil is located inside the ceramic former. This coil, made of 60-micron diameter wire, has a resistance of 30 ohms. The lead wires from the Sensor electrodes are a gold alloy of 80-micron diameter. The heater and lead wires are spot welded to the Sensor pins, which are arranged to fit a 6-pin miniature tube socket. The Sensor base and cover are made of nylon. The deformation temperature for this material is in excess of 240°C. The upper and lower openings in the Sensor case are covered with a flameproof double layer of 100-mesh stainless steel gauze. Independent tests confirm that this mesh will prevent a spark produced inside the flameproof cover from igniting an …show more content…
When the alcohol fumes are more than the set value of the op-amp, the output of the op-amp will become high, which is fed to the controller. Here the op-amp is connected as a comparator that compares with the reference value and provides a logic signal to the controller.
The operational amplifier is arguably the most useful single device in analog electronic circuitry. With only a handful of external components, it can be made to perform a wide variety of analog signal processing tasks. It is also quite affordable, most general-purpose amplifiers selling for under a dollar apiece. Modern designs have been engineered with durability in mind as well: several "op-amps" are manufactured that can sustain direct short-circuits on their outputs without damage.
One key to the usefulness of these little circuits is in the engineering principle of feedback, particularly negative feedback, which constitutes the foundation of almost all automatic control processes. The principles presented here in operational amplifier circuits, therefore, extend well beyond the immediate scope of electronics. It is well worth the electronics student's time to learn these principles and learn them
The initial stabilization time of the TGS 813 is very short and the relative and elapsed characteristics are very good over a long period of Operation. TGS 813 has a very low sensitivity to 'noise-gases’, which considerably reduces the Problem of nuisance alarming. The TGS 8813 is most practically employed in a circuit design, which maintains circuit voltages at fixed value of 5V. This voltage …show more content…
The semiconductor material and electrodes are deposited on a ceramic tubular former. The heater coil is located inside the ceramic former. This coil, made of 60-micron diameter wire, has a resistance of 30 ohms. The lead wires from the Sensor electrodes are a gold alloy of 80-micron diameter. The heater and lead wires are spot welded to the Sensor pins, which are arranged to fit a 6-pin miniature tube socket. The Sensor base and cover are made of nylon. The deformation temperature for this material is in excess of 240°C. The upper and lower openings in the Sensor case are covered with a flameproof double layer of 100-mesh stainless steel gauze. Independent tests confirm that this mesh will prevent a spark produced inside the flameproof cover from igniting an …show more content…
When the alcohol fumes are more than the set value of the op-amp, the output of the op-amp will become high, which is fed to the controller. Here the op-amp is connected as a comparator that compares with the reference value and provides a logic signal to the controller.
The operational amplifier is arguably the most useful single device in analog electronic circuitry. With only a handful of external components, it can be made to perform a wide variety of analog signal processing tasks. It is also quite affordable, most general-purpose amplifiers selling for under a dollar apiece. Modern designs have been engineered with durability in mind as well: several "op-amps" are manufactured that can sustain direct short-circuits on their outputs without damage.
One key to the usefulness of these little circuits is in the engineering principle of feedback, particularly negative feedback, which constitutes the foundation of almost all automatic control processes. The principles presented here in operational amplifier circuits, therefore, extend well beyond the immediate scope of electronics. It is well worth the electronics student's time to learn these principles and learn them