Industrial IoT: Merging Legacy Systems with Smart Sensors

Is industrial IoT a brand‑new trend, or is it simply a modern facelift of time‑tested machinery? The reality lies in between.

For decades, factories have relied on data‑driven controls. The first industrial robot, Unimate, debuted at a General Motors plant in 1959, and SCADA systems—now ubiquitous in manufacturing, oil, and gas—have been managing equipment since the 1960s. Yet today’s media blitz suggests that even the most venerable plants are discovering the power of connected devices for the first time.

Consider the U.S. transformer fleet: the average age is roughly 43 years, with some units exceeding 70 years—well beyond their 35‑year warranties. In San Francisco, a wastewater treatment plant still hosts piping and pumps that date back to the 1950s. These aging assets are now being paired with modern IoT gateways, proving that data can breathe new life into old infrastructure.

So what is the correct answer? Both. Industrial IoT is a marriage of the old and the new. Rather than replace entire lines, manufacturers are attaching wireless radios and sensors to existing equipment, achieving higher reliability and fewer disruptions.

Take J.D. Irving, a 135‑year‑old Canadian conglomerate that supplies frozen French fries, publishes Vogue paper, and reforests 20 million trees annually. Their paper mills use a log saw that converts a large roll into a cascade of identical six‑inch rolls. Although the saw’s control system is “remote,” it remained landlocked until 2017, when the company spent $31,500 on a wired upgrade. Switching to wireless sensors cost just $9,600, thanks to a partnership with RtTech Software. The result: real‑time vibration analysis, predictive maintenance, peak‑power management, and the ability to track automated forklifts.

Rail operators face similar challenges, fitting rugged wireless sensors onto freight cars to reduce accidents and enhance post‑incident forensics.

Not Every Situation Requires a Retrofit

Some systems are designed from the ground up for connectivity. Dell, for example, monitors power consumption and equipment health in its micro‑modular data centers using IoT gateways. These units—think of them as local Netflix servers—allow carriers and content providers to keep popular data close to users, cutting lag and telecom costs.

Retrofits are not a one‑size‑fits‑all solution. Installing gateways often means revisiting security policies and deciding whether to keep analytics on‑premise or in the cloud. However, the falling cost of sensors, improved algorithms, and a growing ecosystem of analytics platforms make wireless upgrades increasingly the default choice. The payoff is simple: older equipment gets a new lease on life, and companies can experiment with fewer upfront investments.

The author is a technical analyst at OSIsoft.

See also: Industrial IoT set to turbocharge lean manufacturing