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Cleanroom Testing and Validation Instruments
Air Valve Flow Measurement Device
A compact cone-type airflow measurement device for direct supply and extract volume-flow checks at circular disc valves and small ventilation terminals.
- Full-flow capture at circular air valves.
- Integrated straightener controls swirl effects.
- Compact bidirectional direct-flow display.
Product Introduction
This device seals a shaped low-resistance cone around a circular air valve and guides the full stream through an integrated flow straightener and sensing grid. The detachable digital meter displays supply or extract volume flow without requiring a separate area calculation. Its compact mouth is easier to position on small ceiling and wall terminals than a full-size capture hood.
Key Features
Integrated straightener reduces swirl-related measurement variation.
Reversible sensing supports supply and extract terminals.
Direct volume-flow display removes manual area conversion.
Soft perimeter seal limits bypass around the valve face.
Compact handheld format suits congested ceiling locations.
Customer Product Concerns
Circular air valves generate curved and swirling flow patterns that are difficult to quantify with a point sensor and often sit where a full-size hood cannot be positioned.
Point velocity readings are unreliable in the swirling flow near a disc valve.The cone captures the full stream and the straightener conditions it before measurement.
Air bypass around the measuring device understates terminal flow.A compliant perimeter gasket seals against the surrounding ceiling or wall surface.
Large capture hoods are awkward around closely spaced ceiling services.The compact circular cone reaches small valves with less clearance.
Supply and extract checks may otherwise require different setups.Bidirectional sensing reports both flow directions through the same cone.
Typical Applications
Circular ceiling air-valve balancingCleanroom supply terminal verificationExtract valve flow checksSmall grille commissioningRoutine ventilation maintenance
Technical Parameters
Representative compact valve-flow device dimensions are listed below; cone diameter, handle reach and measurement range can be selected for terminal size.
| Core Material | Molded engineering-polymer cone, elastomer perimeter seal and differential-pressure sensing grid |
|---|---|
| Panel Thickness | Typically 2.5-4.0 mm for the molded cone wall |
| Effective Width | Approximately 250-350 mm across the capture mouth |
| Maximum Length | Approximately 400-550 mm including handle and display |
| Steel Facing Thickness | Typically 0.5-0.8 mm for stainless sensing-grid elements |
| Core Density | Approximately 1050-1200 kg/m³ for the engineered polymer cone |
| Thermal Conductivity | Approximately 0.18-0.25 W/(m·K) for the engineered polymer housing |
| Surface Finish | Matte white capture cone with graphite handle, black seal and blue-gray display |
| Joint Type | Detachable meter coupling with sealed cone-to-grid interface and soft valve-face gasket |
| Customization | Available based on the intended application and operating environment. |
Available Options
Multiple cone mouth diametersSupply/extract bidirectional meterTelescopic support handleWireless displayProtective transport bagTraceable calibration service
Planning a Air Valve Flow Measurement Device specification?
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