Posts Tagged 4-20mA
NEW! Quick Start Guide for Precision Digital PD6000 Process Indicator
Posted by danstips in Precision Digital on June 23, 2016
Written by: Dan Weise
In the past decade or so, there’s been a trend towards putting a Quick Start Guide in the product box, probably in response to some bureaucratic requirement for a piece of paper in an era when manuals, references and user guides are generally pdfs on-line or on CD.
I’m the guy who reads that documentation, so I’ve seen the good, the bad and the ugly. Most Quick Starts are so scant, they offer very limited value. But, I’ve just read one that rates fabulous in a world of paper documents that rarely warrant anything but a yawn.
What a delightful surprise to open up a Precision Digital PD 6000 process indicator box and find their new Quick Start Guide. A quick flip through the 12 pages revealed it was exactly what I believe a Quick Start should be (and what most aren’t).
LUT400 universal 4-20mA analog output gets rid of the ground loop
Posted by danweise in 4-20mA, HART, Installation, Level, Level Transmitters, Ultrasonic on August 16, 2013
The Problem
Before I talk about the value of a universal 4-20mA analog output on a level controller, let me explain why anyone would care. It’s all about ground loops.
Since the early days of electronic instrumentation, way back when, even before cell phones or PCs, instrument people struggled with ground loops that create an offset error, drive the signal off scale, or burn up an analog circuit.
Lesman Tech Tips 