Pressure Systems, Inc.

NetScanner™ System (9016, 9021, & 9022) User’s Manual

4.2Re-zero Calibration

The NetScanner™ System Intelligent Pressure Scanners including Models 9016, 9021, and 9022 are capable of independently performing a transducer calibration adjustment function, referred to as Re-zero adjustment (or simply Re-zero Cal). The Re-zero calibration will result in a recalculated “offset” coefficient for each channel being calibrated, which automatically compensates for any transducer offset drift errors. Since the factory-set coefficients in each transducer (that characterize both pressure and temperature) are extremely stable over time, these simple offset corrections compensate for the majority of transducer errors over time. For this reason, a Re-zero may be the only calibration adjustment required by many applications. For those applications requiring more accuracy, an optional single-point Span-only calibration adjustment will be described in Section 4.3. An improved multi-point calibration adjustment, integrating both the Re-zero and Span calibration process will be described in Section 4.4.

For Model 9016, with integral DH200 pneumatic transducers, internal manifolds and valves allow a Re-zero calibration to be accomplished easily and automatically. For Models 9021 and 9022, which have external 9400, 9401 or 9402 (or third-party) all-media transducers, the user must supply any necessary valves and controls to accomplish the application of a “minimum” pneumatic or hydraulic pressure to these transducers before executing the re-zero adjustment.

When instructed to execute a Calculate and Set Offsets (‘h’) command, the NetScanner™ System module will automatically perform the Re-zero adjustment calibration, and then update the offset coefficients in its volatile memory. It will subsequently use the newly calculated terms for all future engineering-unit calculations until power is lost to the module.

NOTE: When using the Calculate and Set Offsets command (‘h’), only local terms in the module’s volatile main memory (RAM) are updated. Under normal operation, it is not recommended to store these new coefficients in transducer non-volatile memory. Instead, the re-zero should be performed at regular intervals. Refer to Section 4.6 if it is desired to also store these new re-zero terms in transducer nonvolatile memory.

4.2.1. Re-zero Calibration Valve Control

When instructed to execute a Re-zero (Calculate and Set Offsets (‘h’)) command, Model 9016 modules will normally shift the internal calibration valve into the CAL position and use the pressures present at the CAL and CAL REF inputs for the “minimum” (e.g., zero) calibration pressure. After the Re-zero adjustment is complete, the Model 9016 calibration valve will be placed in the RUN position. Models 9021 and 9022 assume a “minimum” calibration is already applied to the transducers. This automatic shift of the calibration valve can be disabled through use of the

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Pressure Systems 9022 user manual Re-zero Calibration Valve Control
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9022 specifications

Pressure Systems 9022 is a state-of-the-art pressure management system designed for various industrial applications, offering unparalleled efficiency and reliability. This innovative system has become a benchmark in pressure technology, providing users with advanced control and monitoring features.

One of the main features of Pressure Systems 9022 is its ability to deliver precise pressure regulation. Utilizing advanced algorithms, the system continuously monitors pressure levels and adjusts them in real-time, ensuring optimal performance and safety. This feature is particularly beneficial in industries such as oil and gas, pharmaceuticals, and food processing, where maintaining specific pressure levels is crucial for product integrity and process efficiency.

The 9022 is also equipped with cutting-edge connectivity options. With built-in IoT capabilities, the system can be easily integrated into existing networks, allowing for remote monitoring and control. Users can access pressure data in real-time through a user-friendly interface, which enhances decision-making and reduces response times in case of irregular conditions.

Another standout characteristic is its robust construction. Designed to endure harsh environmental conditions, the Pressure Systems 9022 is built from high-grade materials that provide excellent resistance to wear and corrosion. This attribute ensures longevity and minimizes maintenance costs, making it an economical choice for businesses.

Moreover, the system incorporates various safety features. Automatic shut-off valves and alarms are integrated into the design to prevent overpressure situations, protecting both equipment and personnel. These built-in safeguards align with industry standards and promote a culture of safety within organizations.

The Pressure Systems 9022 also emphasizes energy efficiency. By optimizing the pressure regulation process, it reduces energy consumption, contributing to lower operational costs and a smaller environmental footprint. This focus on sustainability resonates with modern businesses looking to enhance their eco-friendly practices.

In conclusion, Pressure Systems 9022 stands out as a versatile, efficient, and reliable solution for pressure management. Its advanced features, durability, and commitment to safety make it a valuable asset for any industrial operation. By adopting this technology, organizations can enhance performance while ensuring compliance with safety regulations, ultimately leading to a more productive and sustainable operation.
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