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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...

HART Communication Tutorial Part 2

S Bharadwaj ReddyAugust 15, 2016

HART ADDRESSING HART addressing is of two types: polling address and unique identifier. Polling address is single byte and is also known as “short address.” Unique identifier is of 5 bytes...

HART Communication Tutorial Part 3

S Bharadwaj ReddyAugust 15, 2016

HART COMMUNICATION LAYERS The HART protocol follows the seven-layer OSI (Open Systems Interconnection) protocol, although it uses only three layers: application, data link, and physical. The other four are not...

HART Communication Tutorial Part 4

S Bharadwaj ReddyAugust 15, 2016August 15, 2016

INSTALLATION AND GUIDELINES FOR HART NETWORKS HART devices use the conventional 4–20 mA current signal cable path to send the HART FSK signal. Thus, no extra communication paths are required to...

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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