400-414DA-12N

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The 400-414DA-12N is a voltage-to-pressure converter (VPC). As its name implies, it can convert voltage signals into pressure signals. It utilizes pressure as a control element often used in control systems. Thus, in modern industrial systems, VPCs, such as the 400-414DA-12N, can be found. These devices are used to control the performance of an industrial process by providing a desired input.

The 400-414DA-12N is a single-ended type pressure transducer with high accuracy and linearity specifications, as well as a wide range of input and output voltage ranges. It is also equipped with a pressure input range of 2.5 to 15 PSI, and an output voltage range of 0 to 5 volts. It also incorporates isolated bridge circuitry that allows for complete isolation from the input voltage signal for high noise immunity and excellent noise rejection. Additionally, this device is protected against thermal damage and shock, is waterproof, and operates over a wide temperature range of -20 to 60°C.

The 400-414DA-12N covers many application fields. It is particularly suitable in applications where constant pressure control needs to be maintained. It is used in aircraft braking applications, which require a high resolution and accuracy of the pressure output. It is also used in medical machinery, such as insulin pumps, to accurately control and monitor pressure signals. It is also useful in oil and gas applications where control of pressure, e.g. for wellbore hydraulics, is required.

The 400-414DA-12N operates in a typical fashion of many other pressure transducers. When the pressure source is applied to the pressure input, it causes a physical change in the transducer which is converted to a voltage signal. The proportional voltage output is then used as a control signal for applications where pressure control is required. The pressure conversion process begins with a Wheatstone bridge, which is typically made up of four resistor elements. The bridge output is a voltage signal proportional to the applied pressure.

The 400-414DA-12N employs a specific bridge circuitry type called a zero-pressure offset bridge. This circuitry ensures that the voltage output remains at zero volts even when the pressure is absent or is at its minimum. This allows for better linearity and accuracy when pressure is applied within the transducer\'s range by keeping the output level down in the lower range and increasing it as the pressure increases. The internal capacitance in the bridge circuitry can also be adjusted to aim for an optimal noise-immunity. This is especially useful in high-noise environments.

Similarly, the 400-414DA-12N also incorporates a temperature compensation circuit. This circuit compensates for temperature-induced changes in the transducer\'s output. This ensures that the output voltage is always proportional to the applied pressure and minimizes the influence of temperature changes in the output.

In summary, the 400-414DA-12N is a highly accurate, high-resolution voltage-to-pressure converter, suitable for a wide range of applications. With its zero-pressure offset bridge circuitry and temperature compensation, it provides excellent linearity and accuracy in applications requiring pressure control. Its high noise immunity also makes it suitable for use in noisy industrial environments.

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