Tag Archives | calibration

AutoQuiz-When-Does-an-Instrument-Need-to-Be-Recalibrated

AutoQuiz: When Does an Instrument Need to Be Recalibrated?

Today’s automation industry quiz question comes from the ISA Certified Control Systems Technician (CCST) program. Certified Control System Technicians calibrate, document, troubleshoot, and repair/replace instrumentation for systems that measure and control level, temperature, pressure, flow, and other process variables. Click this link for information about the CCST program. This question comes from the Level I […]

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How-to-Calibrate-Analytical-Instruments

Webinar Recording: How to Calibrate Analytical Instruments

This is the first of a series about maintaining analytical instrumentation. Insight into common applications and issues of analytical instrumentation as well best practices to calibrate will be explained. The webinar will provide examples of how you document “one-sided” calibrations, such as pH/ORP and gas sensors/analyzers. This approach can apply to other instrumentation as well, […]

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Improve-Industrial-Productivity-with-Loop-Calibration

How to Improve Industrial Productivity with Loop Calibration

The typical approach to calibration has been to regularly test instrumentation that affects successful control, safe operation, quality, or other relevant criteria. In most cases, scheduling is conservative, and methods at a particular site have evolved over time. Instrument technicians follow practices that were set up many years ago. It is not uncommon to hear, […]

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Webinar-Recording-How-to-Calibrate-Differential-Pressure-Flowmeters

Webinar Recording: How to Calibrate Differential Pressure Flowmeters

In this webinar, experts examine the complexity of testing popular multivariable differential pressure cells that provide a compensated flowmeter output based on differential inches of water (inH2O), static (psia) and temperature (RTD) variables. While this smart instrument can make a very accurate measurement, it is often a “mystery” as to how to properly check and […]

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Webinar-Recording-How-Does-Low-Flow-Affect-Differential-Pressure-Flowmeter-Calibration

Webinar Recording: How Does Low Flow Affect Differential Pressure Flowmeter Calibration?

For flowmeter calibration, the phenomenon of “low flow cut-off” is only associated with differential pressure transmitters with square root extraction—if the square root (flow) calculation is done in the control system (DCS/PLC), then this test approach does not apply. The graphic below illustrates the issue. Some may ask why we are testing the initial point […]

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business-case-calibration

How to Build an Industrial Calibration System Business Case

An investment into calibration equipment and systems must be financially justified, just like any other business investment. But does a cheaper cost of purchase always mean a higher return on investment? Not necessarily. When building a business case for calibration system investment, what may seem at the outset to be cheaper may not necessarily be […]

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vibration-seismic-measurement-calibration

Vibration Sensor Monitoring and Calibration Protects Vital Plant Machinery

Seismic velocity measurements provide ideal resolution at typical rotating equipment running speeds. Vibration is always transmitted through the bearings used on rotating equipment. It has been proven time and time again that measuring vibration on rotating equipment is the most universally effective predictive maintenance practice for critical pumps, motors, compressors, fans, cooling towers and rollers. […]

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