QT301-IS Integrated Circuits (ICs)

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The QT301-IS is an amplified, two-channel transducer with an integrated signal conditioning system and 12-bit analog to digital converter. It is part of the I-Series of transducers and is specifically designed for the measurement of low levels of input pressure. Its robust design and low-cost make it an attractive option for data acquisition applications in noise-reduction, ALV, and industrial instrumentation.

The QT301-IS is a reliable, cost effective component for acquiring accurate data under high-static/dynamic loads. It is capable of providing exceptional accuracy over a wide temperature range (+/- 0.25% full-scale span in temperature range 0-50 deg. C). It also has an input range of 0-1 Bar (1 Bar = 14.7 psi) and an output range of 0-4 V based on full-scale input.

The QT301-IS can be used in a variety of applications because of its flexibility. For example, it can be used as an analog input device for pressure sensors, as well as a multi-channel digital-signal-processing module for various types of applications. It can also be used with both low- and high-gain sensor modules for a variety of applications such as strain sensing, vulnerability detection, and process control and automation.

The QT301-IS works on the principle of the Wheatstone bridge. A Wheatstone bridge is a circuit configuration composed of four resistors and a bridge- imbalance detector circuit. The bridge-imbalance detector circuit provides a differential output that is proportional to the bridge’s bridge-imbalance voltage, which is caused by an input force or pressure. This output can then be linearly transcribed into an electrical signal, which, when it reaches a certain threshold, triggers an action. This is made possible by configuring the Wheatstone Bridge circuit in a specialized way.

The main components of the Wheatstone bridge include a resistive element, two reference resistors, and a bridge imbalance detector. The resistive element undergoes a change in its resistance when a force or pressure is applied, thereby creating a bridge-imbalance voltage. This voltage is then amplified by the Wheatstone bridge and sent to the reference resistors. The reference resistors convert this amplified voltage into an electrical signal and then send it to the bridge-imbalance detector. It is this detector that triggers the action that is desired when the signal is above a certain threshold.

The QT301-IS consists of two major components, the Wheatstone bridge and the integrated signal conditioning system. In order to make sure that the Wheatstone bridge is properly working, the components of the system are connected to one another in the following order: a Wheatstone bridge, a conditioning board, an isolation board, a transducer, a sensor, and a logic board. The Wheatstone bridge is then connected to the conditioning board, which amplifies the bridge-imbalance voltage. The amplified voltage is then sent to the isolation board, which isolates the signal from the rest of the system, preventing it from creating any interference with other components. The conditioned signal is then sent to the transducer, which receives the signal and converts it into an analogue pressure reading. This is then sent to the sensor, which converts the analogue reading into a digital signal, which is then sent to the logic board. The logic board is then responsible for triggering the action that was desired when the signal was above a certain threshold.

The QT301-IS is a reliable and cost effective solution for data acquisition applications in noise reduction, ALV, and industrial instrumentation. It is capable of providing accurate data under high-static/dynamic loads and has an input range of 0-1 Bar and an output range of 0-4 V based on full-scale input. Its complex Wheatstone bridge design and integrated signal conditioning system makes it a great choice for a variety of applications.

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