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Fieldbus Transmitters Calibration and Ranging

S Bharadwaj ReddyApril 4, 2018October 6, 2018

Calibration and ranging for a FF device is similar in principle to any other “smart” measurement instrument. Unlike analog instruments, where the “zero” and “span” adjustments completely deﬁne the instrument’s

Instruments Calibration Procedures

S Bharadwaj ReddyMarch 7, 2018October 4, 2018

Calibration refers to the adjustment of an instrument so its output accurately corresponds to its input throughout a specified range. The only way we can know that an instrument’s output

Difference between Calibration and Ranging

S Bharadwaj ReddyMarch 5, 2017October 4, 2018

The concepts of calibration (trimming) and ranging are often difficult for new engineers of instrumentation to immediately grasp. A simple analogy useful for understanding these topics is that of setting

Smart Transmitter Calibration Tutorial Part 1

S Bharadwaj ReddyAugust 30, 2016November 15, 2017

Calibration can be carried out using a handheld communicator in the field, a laptop on the bench in the workshop, or from intelligent device management (IDM) software as part of

Smart Transmitter Calibration Tutorial Part 2

S Bharadwaj ReddyAugust 30, 2016September 5, 2018

Range Setting (Re-range) Range setting (re-ranging) refers to setting the scale for the 4 mA and 20 mA points. This scale is usually referred to as “calibrated range” or “calibration

Smart Transmitter Calibration Tutorial Part 3

S Bharadwaj ReddyAugust 30, 2016December 16, 2016

Transmitter Output Current Trim (Analog Trim) It is rare for the analog output current circuitry of a 4-20 mA transmitter to drift. However, should the analog output current be incorrect,

Important Terms in Calibration

S Bharadwaj ReddyAugust 29, 2016October 10, 2018

The term “calibration” in the context of smart/intelligent transmitters is often misunderstood. The information provided here serves to explain the difference between sensor trim, range setting, and current trim. Plants

Instrument Zero and Span Calibration

S Bharadwaj ReddyAugust 16, 2016May 2, 2018

Every instrument has at least one input and one output. For a pressure sensor, the input would be some fluid pressure and the output would (most likely) be an electronic

Transmitter Calibration Procedure

S Bharadwaj ReddyFebruary 25, 2016September 27, 2016

In today’s environment of shrinking cost margins and increased regulations, maintaining properly calibrated equipment becomes ever important. Even the smallest inaccuracy in process measurements can cause a significant loss in

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