From the Wellhead to the Control Room: How Classic Controls Covers the Whole Measurement Loop

Most plants don't have a measurement problem. They have a dozen, scattered across the site.

There's a tank farm where somebody needs level within a quarter inch. A boiler that has to light off safely every time. A compressor train worth more than the building it sits in. A loading rack where every gallon across the meter is money. A control valve that's been hunting for six months and nobody can say why. And a maintenance manager holding it together with a crew smaller than it was five years ago.

Classic Controls has spent decades in exactly that middle. From Lakeland, Florida, we support process instrumentation, valves, and control systems across Florida and southern Georgia, and out through Puerto Rico, the Caribbean, and Central America — including refining and offshore energy work in Trinidad and Tobago, Guyana, and Suriname. Customers don't call because we sell instruments. They call because we've usually seen their problem before.

What does Classic Controls actually handle?

Close to the whole loop:

Level. Radar and guided wave radar for tanks, silos, and vessels that used to be gauged with a stick and a prayer. Point level switches for high-high alarms and pump protection. And the applications with foam, agitation, or steam, where the textbook answer is wrong.

Flow. Thermal mass meters for compressed air, natural gas, flare, and digester gas — where you need standard cubic feet, not actual. Ultrasonic clamp-on and inline meters for liquids and gas, including lines nobody will shut down long enough to cut in a spool. Helical turbine and positive displacement meters for custody transfer, truck loading, and hydrocarbon movements where the ticket has to survive an audit. Vane and thermal switches for pump protection and cooling water.

Pressure and temperature. Transmitters, mechanical gauges, diaphragm seals for slurry and sanitary service, bimetal and filled thermometers, and switches with real mechanical repeatability. Plus RTDs, thermocouples, and thermowells built for the actual insertion length, process connection, and vibration environment — not a catalog approximation.

Analytical. pH, ORP, conductivity, dissolved oxygen, and lab-grade water analysis for treatment plants and process water loops. Moisture and oxygen analyzers for gas streams. Sample conditioning systems and membrane separators that keep liquid carryover out of an analyzer that costs five figures to repair.

Machinery protection. Proximity probes, seismic sensors, and vibration monitoring for turbines, compressors, pumps, and fans. A critical machine should tell you it's in trouble before it proves it.

Combustion safety. Flame safeguard and burner management for boilers, ovens, dryers, and heaters. Code-driven work, treated that way.

Control and infrastructure. Distributed control systems, recorders, panel meters and digital indicators, intrinsic safety barriers and isolators, purge and pressurization systems, remote I/O, DIN rail components and enclosures, surge and lightning protection, and proximity and photoelectric sensing. Plus wireless telemetry for assets half a mile from the nearest conduit run — remote tanks, wellheads, and pump stations never worth trenching to.

The final control element. Measurement only matters if something acts on it. We handle control valves and actuation in the same conversation, and we service them: our Lakeland facility has warehousing, a machine shop, a production area, and QC and test capability, so valve and actuator repair happens here instead of shipping out and waiting. We do systems integration too.

Why does that breadth matter?

Because loops don't respect product categories.

A phosphate operation calls about erratic flow readings. The meter's fine. It's a grounding issue that shows up during afternoon storms, and surge protection is the fix, not a new transmitter. A treatment plant fights pH drift and blames the analyzer, when the culprit is the sample system upstream. A refinery chases a control problem through the transmitter and the DCS tuning before anyone looks at the valve positioner.

If your supplier only sells one of those things, guess which one they recommend.

Working with us

We're a manufacturer's representative and stocking distributor: we carry inventory, we handle startup and commissioning, and we troubleshoot in the field when a loop won't behave. We size, configure, and help write specs. When a device is fifteen years old and the OEM has moved on, we'll tell you honestly whether to keep it or migrate.

The territory has its own personality — heat, humidity, lightning, salt air, storm season, and long logistics tails on islands where a two-week lead time is a shutdown. Instruments that behave in Ohio behave differently here. That context is part of what we bring, whether the site is in Polk County or offshore Guyana.

If you've got an application that isn't cooperating, or a project that needs someone to think through the whole loop instead of quoting a part number, we're a call away.

Yokogawa's Wireless Sushi Sensor Technology

The Yokogawa Sushi Sensor represents a comprehensive family of wireless condition monitoring devices designed to address one of the most persistent challenges in process industries: the need for fragmented and labor-intensive sensing systems. Instead of relying on multiple isolated devices and extensive wiring to monitor vibration, pressure, temperature, and steam trap performance, the Sushi Sensor line provides a unified wireless infrastructure for asset condition monitoring across large-scale industrial facilities.

Modular Architecture for Flexibility and Serviceability

The Sushi Sensor family employs a modular design philosophy that emphasizes flexibility, maintainability, and scalability. Rather than a single, all-in-one multi-parameter sensor, the line consists of specialized modules—each optimized for specific measurement functions—connected through a shared LoRaWAN wireless communication backbone.

The XS770A is a fully integrated wireless vibration sensor that combines tri-axial vibration measurement with built-in surface temperature sensing. Introduced as the first product in the Sushi Sensor series, it laid the foundation for Yokogawa’s broader Industrial IoT (IIoT) monitoring ecosystem.

The XS530 pressure measurement module and XS550 temperature measurement module both interface with the XS110A wireless communication module. This modular pairing enables the measurement components to remain mounted in place during maintenance. At the same time, the XS110A can be detached for battery replacement, thereby dramatically improving service efficiency and minimizing process disruptions.

The XS822 steam trap monitoring module also connects with the XS110A and incorporates acoustic and temperature sensing elements to automatically detect and classify steam trap operating conditions. Together, these modules provide plants with a cohesive, interoperable sensing architecture that scales from pilot installations to full plant coverage without requiring re-engineering of infrastructure.

Shared Wireless and Environmental Design Standards

All Sushi Sensor products share a standardized technical foundation that defines their performance, durability, and connectivity. Each uses LoRaWAN® wireless technology, offering long-range communication—up to approximately six miles (ten kilometers) under ideal conditions—while maintaining very low power consumption and robust interference resistance. This makes the system suitable for large industrial sites such as refineries, petrochemical complexes, and power generation plants, where traditional wired installations are costly and inflexible.

The devices feature rugged environmental protection, with IP66 and IP67 ratings for dust and water resistance, and are designed for installation in hazardous environments with explosion-proof certifications, including ATEX and IECEx. Battery life can be extended up to ten years under specified conditions (such as one-hour reporting intervals, moderate ambient temperatures, and optimal signal strength), minimizing lifecycle costs and reducing the frequency of maintenance visits in hazardous or remote areas.

XS770A: Wireless Vibration and Temperature Sensing for Rotating Equipment

The XS770A vibration sensor forms the backbone of condition-based maintenance programs for rotating machinery. It measures vibration velocity and acceleration along three axes, as well as a composite value for overall vibration, while simultaneously recording surface temperature. These parameters allow early detection of bearing degradation, imbalance, and shaft misalignment in motors, pumps, compressors, and fans.

By leveraging its wireless LoRaWAN communication, the XS770A can be deployed in locations that were previously difficult or unsafe to monitor—such as elevated piping, confined spaces, or high-temperature zones—without the need for costly wiring runs. When vibration anomalies are detected, maintenance teams receive timely alerts that allow intervention before minor mechanical issues evolve into equipment failures or costly process shutdowns.

XS530: Pressure Measurement for Process Insight

The XS530 pressure measurement module provides accurate monitoring of gauge pressure in gases and liquids. When paired with the XS110A wireless module, it becomes a self-contained, battery-powered transmitter suitable for both high- and low-pressure applications. The sensor’s wetted materials are engineered to resist corrosion in demanding process conditions, supporting long-term stability and low drift.

Pressure data from the XS530 often serves as a critical complement to vibration and temperature measurements on adjacent equipment. For example, a gradual pressure fluctuation correlated with increased vibration amplitude can reveal pump cavitation or progressive valve leakage. This multi-parameter context—made possible by combining readings from different Sushi Sensor modules—provides a depth of diagnostic capability that single-parameter devices cannot achieve.

XS550: Dual Thermocouple Input for Broad Temperature Applications

The XS550 temperature measurement module accommodates dual thermocouple inputs compliant with nine IEC standards, including types B, E, J, K, N, R, S, T, and C. This allows it to measure a wide range of process and surface temperatures, from cryogenic conditions to furnace-level heat. Typical applications include monitoring temperature profiles in multistage heat exchangers, detecting energy losses from steam leaks, and tracking the temperatures of refractory surfaces in furnaces and vessels.

Because the XS550 connects to the detachable XS110A wireless module, technicians can replace batteries or update communication components without needing to remove the temperature measurement hardware from the process. This feature reduces maintenance time, prevents unnecessary dismounting of probes, and minimizes exposure to hot or hazardous areas.

XS822: Automated Steam Trap Monitoring

Steam traps play a vital role in maintaining steam system efficiency, yet they are notoriously difficult to monitor using manual inspection methods. The XS822 steam trap monitoring module automates this process by combining acoustic and temperature sensing to evaluate trap performance and classify operational status.

By continuously analyzing the sound and temperature patterns associated with condensate discharge, the XS822 can distinguish between regular operation and failure modes such as blowing (steam loss) or plugged (condensate retention) traps. The device requires no configuration for specific trap types or manufacturers—it automatically learns and identifies trap conditions, transmitting simple failure or non-failure status to host systems.

This automation converts a historically manual, schedule-based maintenance task into a continuous, data-driven process. Plants benefit from measurable energy savings, reduced steam losses, and lower carbon emissions, while maintenance teams can prioritize repairs based on actual performance rather than routine inspection intervals.

Unified Wireless Infrastructure and Analytics Integration

From an infrastructure perspective, the Sushi Sensor’s LoRaWAN-based network architecture enables robust, plant-wide deployment. Thousands of endpoints can communicate through strategically placed gateways, transmitting data to Yokogawa’s cloud-based analytics platforms or on-premises systems. Within these systems, condition data populates dashboards that display equipment health trends, risk levels, and recommended maintenance actions.

This centralized visibility transforms maintenance operations from a reactive response to a predictive intervention. Instead of waiting for breakdowns, engineers can anticipate failure patterns, optimize spare-parts inventory, and schedule repairs when they will have the least operational impact. Over time, this approach extends equipment lifespans and boosts overall plant reliability.

Safety and Deployment Advantages

Wireless remote monitoring also enhances personnel safety by reducing the need for manual inspections in confined spaces, at elevation, or in hazardous areas. Technicians no longer have to routinely approach hot equipment, pressurized lines, or areas with explosive atmospheres to gather data.

Since its market introduction, more than 30,000 Sushi Sensor units have been deployed globally across diverse industries, demonstrating proven reliability in challenging operating environments and validating Yokogawa’s vision for wireless, modular condition monitoring.

A Scalable Platform for Digital Transformation

The Sushi Sensor family aligns seamlessly with broader Industrial IoT and predictive maintenance initiatives. By utilizing specialized sensors that share a common wireless infrastructure, plants can implement comprehensive condition monitoring without the cost, complexity, or wiring density associated with legacy systems.

As facilities evolve, the modular architecture allows incremental expansion—beginning with vibration monitoring on critical assets, adding steam trap monitoring for energy optimization, and later incorporating pressure and temperature measurement to complete a fully integrated program. Each stage builds toward a unified, data-driven maintenance strategy.

For process industries pursuing higher reliability, greater energy efficiency, and safer operations, the Yokogawa Sushi Sensor family delivers a technically proven, scalable foundation for condition-based maintenance. It exemplifies how modern wireless sensing technology can reshape operational excellence—merging rugged industrial design, intelligent measurement, and long-range connectivity into a cohesive platform built for the future of smart manufacturing.

Plant-wide Condition Monitoring

In addition to the most important assets found in industrial facilities, there are often a host of “supporting” assets that make up the balance of the plant such as pumps, motors, blowers, heat exchangers, fans, and others. This auxiliary or plant-wide equipment may be spared or sacrificed, and its impact on the process stream may vary from moderate to minor. Regardless, such machines—just like their more highly important counterparts—can benefit from Condition Monitoring. Condition Monitoring provides affordable, effective portable and permanent condition monitoring solutions that are delivering tangible benefits for tens of thousands of customers around the globe.

Financial Justification

For many assets, failure can mean substantial or total loss of production, often worth millions per day. Or it can lead to the release of hazardous substances, fires, and even explosions— resulting in a severe safety hazard as well as fines for violating environmental regulations.

Maintenance Costs

When viewed on a per-asset basis, maintenance costs for plant-wide assets can appear modest. However, when viewed collectively across the dozens, hundreds, or even thousands of assets in a typical plant, these costs can be appreciable. Reducing the maintenance costs on each asset through effective condition monitoring—even by a mere 10%—has a large impact on plant profitability. Condition Monitoring is a planning tool that allows more effective insight in planning and asset management, allowing maintenance to be done in advance of a functional failure.

Things to think about as you move towards Predictive Maintenance:

• 90% of failures are NOT time-based.
• 50% of companies site maintenance and reliability as a top priority.
• It costs 6x as much for unplanned events vs. planned maintenance in process industries.
• A 60% estimated increase in environmental, health and safety spending among global exploration & production companies.
• 50% of workforce to retire in the next 5 to 10 years. Knowledge & experience is not being transferred.

Potential impact of a conditioning monitoring program and the move towards Predictive Maintenance:

• -70% Machinery breakdowns 
• -40% Plant downtime
• -50% Maintenance costs
• +25% Production

For more information on Plant-wide Condition Monitoring, contact Classic Controls by calling 863-644-3642 or visit their web site at https://classiccontrols.com.