History

The ominous Tuesday the 13th, April 2021

Yesterday was Tuesday the 13th. For most of the world, Friday the 13th is the traditional bad luck day. But for the majority of Spanish-speaking people, Tuesday the 13th is the ominous one. The fear of the number 13th has a scientific name: “triskaidekaphobia”.The fear of the Friday the 13th is called “paraskevidekatriaphobia”. Apparently, its …

The ominous Tuesday the 13th, April 2021 Read More »

To mux or not to mux

When digital technology became available, the idea of improving the 4-20 mA signal became the goal for every major instrumentation supplier. Using newly available cheap microprocessors, manufacturers developed various techniques to include additional information to be encoded digitally into the 4-20 mA current signal loop. As far as I can remember, the three major contenders that attempted to do this were Foxboro, with its FoxCom protocol, Yokogawa with its Brain protocol and Rosemount with the HART (Highway Addressable Remote Transducer) protocol.

This isn’t funny anymore….

Until a few days ago, the majority of the current Trump administration actions and policies affected mostly US citizens. Last week’s Middle East and Europe trip was troubling for other reasons, such as the “tremendous” arms sale to Saudi Arabia, a country really as far away from the democratic ideals of the USA Founding Fathers …

This isn’t funny anymore…. Read More »