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Flow Monitoring for Air Compressors

Track exactly how your compressed air system is performing with real-time flow monitoring that cuts waste, prevents downtime and breakdowns, and saves money. This data-driven approach allows for true compressed air consumption monitoring, giving you control over your energy costs and system health.

Understanding What Your Compressed Air System Is Doing

J Ll Leach has been working with compressed air systems since 1936. From our depots in Stoke-on-Trent, Birmingham and Shrewsbury, we see businesses across the Midlands struggling with the same problems – systems that use more energy than they should and break down without warning. Many companies are unaware of their true compressed air consumption or the cost of leaks.

Flow monitoring shows you what’s happening with your compressed air. The data helps you spot problems early and keep running costs down. It provides the real-time data and critical data points needed to improve efficiency.

Why Monitor Your Compressed Air System?

Compressed air systems work hard. Without compressed air monitoring, you won’t know if yours is wasting energy or heading for trouble. This inefficiency can lead to high energy costs and unexpected downtime.

Common problems include:

  • Air leaks that cost hundreds of pounds a year
  • Compressors running at full load when they should be cycling
  • Pressure drops that make tools work poorly
  • Moisture in airlines causing product contamination or water droplets
  • Systems that are too big or too small for actual demand

The Business Case for Monitoring: ROI and ‘Artificial Demand’

Beyond finding basic faults, a primary benefit of an air compressor monitoring system is tackling “artificial demand.” This is the excess consumption of compressed air caused by running the system at a pressure higher than is necessary for your tools. This unnecessary pressure wastes energy and increases wear.Flow monitoring provides the data to calculate your system’s ‘Specific Power’ (kW/m³/min), a key metric for compressor efficiency. By identifying this waste, we can help you optimise pressure settings, reduce energy, and demonstrate a clear return on investment (ROI). Most monitoring systems pay for themselves quickly, often within 12-24 months, through direct energy savings.

What Monitoring Tells You

Flow meters for compressed air measure how much air you’re using and where it’s going. They track pressure, temperature and energy consumption. Dew point sensors monitor moisture levels, essential for achieving specific air quality in food production and pharmaceutical work.The data shows whether your air compressor system is running efficiently or wasting money. This data analysis provides real-time insights for troubleshooting and energy management.

Types Of Monitoring Equipment

Flow Meters

Use thermal mass or ultrasonic technology to measure airflow and air consumption. They’re accurate to within 1-2% and can detect leaks before you hear them. While thermal mass meters are excellent for dry air, they are sensitive to moisture. We will assess your air quality and pipework to recommend the right technology for the job, which may also include Vortex or Differential Pressure (DP) meters.

Pressure Sensors

Track system pressure at different points. Falling pressure often indicates leaks or blockages. This helps manage system fluctuation.

Energy Meters

Measure exactly how much electricity your compressor uses. This helps calculate the real cost of compressed air and benchmark your energy efficiency.

Temperature Sensors

Monitor the compressor and air temperatures. Overheating usually means maintenance is needed.

Dew Point Meters

Measure moisture in the air supply. Critical for applications where water contamination causes problems.

Data Loggers and System Audits

For a complete picture, we often start with a comprehensive air audit, sometimes called an AIRScan. We use temporary data loggers to record your system’s performance over several days. This helps us establish a baseline and identify patterns, providing the foundation for a permanent air monitoring system and a robust energy management system.

How Monitoring Saves Money

Energy typically accounts for 70% of compressed air costs. A 5mm hole in your airline costs about £400 per year to run. Most businesses have several leaks they are unaware of.

Monitoring helps by:

  • Finding leaks quickly
  • Showing when compressors are oversized
  • Identifying pressure drops that waste energy
  • Tracking actual air demand versus supply

We’ve installed compressed air monitoring systems that pay for themselves within 12 months through energy savings alone.

Remote Monitoring with SMARTLINK

As Atlas Copco Premier Distributors, we install SMARTLINK cloud-based systems that connect your compressor to our service team. The system continuously sends compressor data and alerts us to any problems, often sending a notification directly to your mobile app.

SMARTLINK monitors:

  • Compressor performance and efficiency
  • Operating hours and maintenance schedules
  • Energy consumption patterns
  • System faults and warning conditions
  • The real-time status of your compressed air supply

You get access to the same data through a web dashboard. The system is compatible with most smartphones and tablets. This gives you 24/7 access to your air system’s critical data points and optimal performance.

Installation And Setup

Most monitoring equipment can be fitted during regular operation. Ultrasonic compressed air flow meters clamp onto existing pipes without cutting or welding. Installation typically takes 2-4 hours, depending on the system size. We ensure proper installation, including adhering to requirements for straight pipe runs, to guarantee measurement accuracy.

We work around your production schedule. Many installations happen during planned maintenance or at weekends.

What’s Involved

Our engineer visits to assess your system and recommend suitable monitoring points. We then:

  • Install flow meters and sensors at agreed-upon locations
  • Connect compressed air equipment to your network or set up wireless communication
  • Configure monitoring software and alarm settings
  • Train your maintenance team to use the system

Documentation includes operating instructions and maintenance schedules.

Industries we work with

Our monitoring systems work across different sectors:

Manufacturing

Automotive components, textiles, general engineering

Food and Drink

Breweries, bakeries, packaging operations

Ceramics

 Pottery manufacturers around Stoke-on-Trent

Healthcare

Hospitals and medical device manufacturers

Pharmaceuticals

Companies requiring validated air quality

Each industry has different air quality requirements. We configure monitoring systems accordingly, from general manufacturing to validated pharmaceutical air quality. Our Birmingham and Midlands teams also have experience with specialised air sampling systems for critical applications.

Maintenance And Support

Monitoring equipment needs regular calibration to stay accurate. We check sensors every 12 months and recalibrate as needed. This ensures your data remains traceable and reliable, which is essential for compliance and auditing (such as ISO 11011).

Software updates happen automatically through the network connection. Technical support is available during normal business hours.

Emergency call-out is available for system breakdowns. Our engineers carry standard spare parts and can often fix problems the same day.

Getting Started With Flow Monitoring

Contact us to arrange a site visit. Our engineer will assess your compressed air system and recommend monitoring points. We’ll explain what compressed air monitoring equipment is needed and provide a fixed-price quotation.

Installation can usually be scheduled within 2-3 weeks of the order.

FAQs

How accurate are flow meters?

Modern thermal mass air flow meters are accurate to within 1-2% of the reading. They’re calibrated in our workshop before installation and checked annually to maintain accuracy.

Can monitoring be added to old compressors?

Yes. An air monitoring system is compatible with any compressed air system, regardless of age. Sensors connect to the pipework and don’t require modifications to the compressor itself.

What happens if the monitoring system fails?

Your compressor continues to operate normally. Monitoring systems are separate from compressor controls and don’t affect operation. We carry spare parts for quick repairs.

How long does installation take?

A typical installation takes half a day. Large systems with multiple monitoring points might take a full day. We work around your production schedule to minimise disruption.

What is ‘Specific Power’ and why does it matter?

Specific Power is the key metric for measuring compressor efficiency. It’s the ratio of energy used (kW) to the compressed air output (often in m³/min). A lower Specific Power value means higher efficiency. Our compressed air monitoring helps you measure and improve this crucial benchmark.

How does monitoring help with UK compliance like ESOS or SECR?

Energy audits and reporting are now a legal requirement for many UK businesses under schemes like the Energy Savings Opportunity Scheme (ESOS) and Streamlined Energy & Carbon Reporting (SECR). A permanent flow monitoring system provides the accurate, verifiable data on your compressed air energy consumption required for these reports, ensuring you are compliant.

What is ‘downtime’ monitoring?

Downtime monitoring is a key feature of our systems. Instead of just waiting for a breakdown, the system’s real-time data analysis can spot small deviations in temperature, pressure, or flow that signal a component is failing. This allows for predictive maintenance, preventing unplanned downtime before it stops your production.