Hydronic Manometers

Hydronic systems depend on accurate flow to deliver design capacity at coils and terminal units. Hydronic manometers give TAB and HVAC professionals the precision needed to verify differential pressure, calculate flow, and balance branches for comfort and efficiency. Whether you are commissioning a new plant, tuning a variable flow system, or verifying a complaint, these instruments help you locate bottlenecks and confirm corrective actions.

Core functions include measuring differential pressure across balancing valves, control valves, and coils, then converting readings to flow using valve charts, K factors, or Cv values. Many manometers provide temperature compensation, which supports more stable readings and more reliable flow calculations. Paired with accessories such as hoses, bleed adapters, and probe kits, they support quick, clean connections at Pete’s plugs and test points.

Key features:

• High-resolution differential pressure sensors suited for low to medium DP ranges
• Auto-zero and drift management to support consistent readings over long days
• Onboard lookups and user-entered valve data for fast flow calculations
• Time-averaging and min/max capture for fluctuating systems
• Data logging with job and location tags for clear reporting
• Rugged, water-resistant housings designed for mechanical rooms

Typical use cases:

• Balancing terminal coils for comfort and stable control
• Verifying pump head and differential pressure across loops
• Comparing actual vs. design flow to identify restrictions or mis-sized valves
• Documenting retro-commissioning improvements and before/after results
• Validating control strategies in variable primary or primary/secondary systems

Selection considerations:

• Choose appropriate DP range and resolution to match your systems
• Confirm compatibility with the balancing valve types you encounter most
• Evaluate data handling — CSV export, PDFs, and app workflows can save hours
• Look for service and calibration options that fit your maintenance schedule

Tips for reliable results:

• Bleed air from test ports to stabilize readings
• Record water temperatures when flow calculations require it
• Use consistent averaging intervals on variable flow systems
• Label and photograph test points to improve repeatability

With the right hydronic manometer, TAB teams can streamline balancing, help reduce pump energy, and document water-side performance with confidence and clarity.