Expert’s answer

Yep, I’ve seen that video too. And yes, Emerson’s wireless pressure gauge provides more stability than a classic manometer but looks almost the same. Why?

First, I have to give kudos to Emerson for creating a modern device with a familiar interface. The standard dial means the operator feels comfortable with the new wireless pressure gauge.

However, it improves measurement and also adds wireless communication. So the same data you collect in the field you can now receive remotely. This remote data collection allows you to reduce hours in the field and also provides more accurate data than before.

wireless pressure gauge
Courtesy of Emerson

The principle

A traditional pressure gauge uses a mechanical system to measure pressure, with a Bourdon tube expanding and contracting based on the pressure applied. The entire system – rack, pivot, spring, pinion, and pointer – moves to show the pressure on the dial.

However, the wireless pressure gauge uses a strain-relief sensor that processes the signal electronically. Then it imitates the old interface with a tiny motor driving the pointer on the dial. So you get more stable measurement than the old pressure gauge, as well as remote data collection. And it looks the same as always. Good show, Emerson.

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