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Pressure Sensors, Transducers

The 1865-03G-LDN by Legato Automation is a miniature pressure transducer that measures pressure ranges from 5 to 15 psi and a maximum pressure reading of 100 psi. It is ideal for measuring low-pressure applications such as powering up or rebuilding after installation. The 1865-03G-LDN features a piezoresistive bridge and ceramic capacitive sense element, and it has two highly accurate sensors that measure pressure with a resolution of 0.1 psi.

The 1865-03G-LDN is connected to a power source or a control board with a 4-pin terminal block. It also has two separate outputs: an analog signal (4-20 mA) and a digital signal (RS-422). The transducer is self-contained with an active temperature compensation feature that enables it to maintain accuracy over a wide range of temperatures. The sensor also offers a built-in self-test feature that verifies its accuracy during startup.

The sensor can be used in a wide range of applications including control, test and safety, such as compressor or fluid controls, as well as pressure monitoring. It is suitable for controlling and monitoring low-pressure air, fuel and water systems in the automotive, aerospace, chemical and industrial sectors.

Working Principle

The 1965-03G-LDN pressure transducer produces an analog and digital output proportional to the applied pressure. The analog output is a 4-20 mA current loop, and the digital output is an RS-422 serial communication signal. The transducer works by measuring the resistance generated by the piezoresistive element on the sense element. The resistance generated is converted into a voltage that is then converted into the 4-20 mA current loop or digital output.

The transducer also features an active temperature compensation circuitry that helps it maintain its accuracy over a wide temperature range. This circuitry continuously samples the temperature and adjusts the transducer\'s calibration to compensate for any temperature fluctuations. The transducer also features a built-in self-test feature that ensures its accuracy by comparing the output of the sensor to a reference signal.

Conclusion

The 1865-03G-LDN pressure transducer by Legato Automation is a highly accurate sensor with a resolution of 0.1 psi. It is suitable for use in a wide range of applications including controlling and monitoring low-pressure air, fuel and water systems in the automotive, aerospace, chemical and industrial sectors. The transducer produces an analog and digital output proportional to the applied pressure and offers an active temperature compensation circuitry to ensure accuracy over a wide temperature range. The transducer also features a built-in self-test feature that verifies accuracy during startup.

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