Lab and Biosafety Systems

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Lab and Biosafety Systems Flow and energy solutions for commercial HVAC and lab systems. Fast answers. Reliable results. LABS knows flow.

We help engineers and contractors design, troubleshoot, and optimize high-performance systems. 31 years of expertise.

10/19/2026

A single flow measurement is not automatically proof of performance months later.

Demand on a system changes throughout the year. A reading taken under one set of conditions only reflects that moment, not what happens once load shifts with the season. The gaps that were never there at the time of that reading can surface later, often at the worst possible time.

Accurate flow meter data covering both seasons is what actually shows whether a system is still performing, not a single reading taken once.

Contact us at [email protected] to talk through your flow meter and BTU measurement.

10/16/2026

Most systems get one check a year, usually at full cooling load, and nothing after that.

The gaps showing up in October were not there in July. Load profiles shift as the season changes and flow readings that looked fine at peak cooling can tell a different story at part load in fall.

A single annual check captures one moment in time. What happens between checks is where the real performance picture lives and where most comfort complaints and energy inefficiencies quietly build up.

If your team wants to talk through flow meters, airflow stations, or dampers before the load shifts that is a conversation we are glad to have early.

Reach out at [email protected] or link in bio.

Two audits. Two different measurement methods. Two different answers about the same duct.Thermal dispersion and pitot ar...
10/16/2026

Two audits. Two different measurement methods. Two different answers about the same duct.

Thermal dispersion and pitot arrays aren't interchangeable. One reads low, variable velocity accurately.

The other is built for higher, steady velocity. Using the wrong one doesn't just add error. It can produce a confident-looking number that's simply wrong for that duct condition.

Before your fall audit, it's worth checking which method the technician is actually using and whether it fits the application they're measuring.

Save this for your next system audit.

10/15/2026

A stable confident looking reading is proof the instrument is working. Whether it is working correctly for that specific duct condition is a completely separate question.

The display shows a clean number. Nobody questions it. But the method was never matched to the duct, wrong velocity range, wrong placement, wrong technology for the application. The reading looks right and the data is wrong and everything built on top of it is off from the start.

This is where a lot of audit findings trace back to. Not broken equipment. Not bad installations. Just a measurement method that was never verified against the actual duct condition it was being asked to measure.

Before your next audit it is worth asking not just whether the instrument is reading but whether it is the right instrument for what it is reading.

Reach out at [email protected] to talk through measurement method for your next project.

10/14/2026

A valve that appears closed can still be passing bypass flow, and that small leak is often the entire explanation for a delta-T that has been quietly dropping for weeks.

It does not take much. A valve that is 95 percent closed is still open. That remaining flow bypasses the coil, mixes with the return, and pulls delta-T down in a way that looks like a coil problem or a pump problem or a balancing issue, until someone actually checks the valve.

Partial load is when this shows up most clearly because the system is running closer to its limits. What the valve was doing at full cooling load in August gets exposed when demand drops and the margins tighten.

If delta-T has been drifting and the valves have not been verified at partial load that is usually the first place worth looking.

Reach out at [email protected] before your next partial load check.

10/13/2026

A sensor that reads accurately at full load can miss what is happening at partial load entirely.

Delta-T sensors placed and calibrated for peak cooling demand do not always hold that same accuracy once flow rates drop. The temperature differential across the coil is often smaller than the sensor is reporting, and that gap is what makes low delta-T hard to catch early when it matters most.

Verifying sensor accuracy at partial load, not just full load, is what actually catches the problem before it becomes a comfort issue or an energy drain.

Learn more at labsga.com

Thank you to the entire Control Industries team for the hospitality at your Open House in Seattle last week.A few highl...
10/13/2026

Thank you to the entire Control Industries team for the hospitality at your Open House in Seattle last week.

A few highlights from the visit:

✓ Continuing to strengthen our relationship with the FCI team while connecting with new guests
✓ An up-close look at how the DeltaPValve is built and the engineering behind it
✓ Live demonstrations showing exactly how the valves respond as system conditions change

One of the biggest takeaways: stable, controlled flow is critical to overall HVAC system performance. When flow remains predictable, the rest of the system has a far better opportunity to perform the way it was designed.

Thank you again to the entire Flow Control Industries team for the hospitality and another great Open House.

Summer airflow numbers don't carry over to winter automatically.A system that performed well in cooling mode can behave ...
10/12/2026

Summer airflow numbers don't carry over to winter automatically.

A system that performed well in cooling mode can behave completely differently once heating load kicks in. Dampers that were tuned for one season often weren't re-verified for the next. Sensor placement that worked for cooling airflow doesn't always translate cleanly to heating airflow.

Most comfort complaints in the first cold week trace back to the same root cause: nothing was re-checked between seasons. The system wasn't wrong. It just wasn't re-verified for the load it's now running.

Save this before the next changeover on your project.

10/12/2026

The measurement method should be chosen before the audit starts not after the numbers come back confusing.

Duct velocity and how much it varies over time are the two questions that actually decide which method belongs in that spot. Thermal dispersion handles variable low velocity zones. Pitot arrays work in higher velocity steady flow conditions. Skipping that evaluation is how audits end up with data nobody knows how to act on.

Getting the method right before the first measurement is taken is what makes the rest of the audit worth doing.

Contact us to discuss your project at [email protected]

10/06/2026

A good meter with the wrong signal type gives your controls bad data from day one.

Analog output and scaled pulse signals are not interchangeable. Analog output tracks flow continuously, it is the right choice when your controls need to respond to real-time changes in flow rate. Scaled pulse counts flow over time , it is the right choice when you are tracking consumption rather than modulating a response.

Use a scaled pulse signal where your controls expect analog and the system reads a flat line or a spike instead of a smooth flow curve. Use analog where you need consumption tracking and your energy data becomes unreliable.

The meter is not the problem. The signal selection is, and it happens at the specification stage before anyone touches the installation.

If you want a second set of eyes on signal type selection for your next project reach out at [email protected]

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