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Instruments d'essai et de validation de salle blanche
Testeur de fuite duct
A portable positive/negative duct leakage tester with variable blower, calibrated flow measurement and automatic pressure control for HVAC commissioning.
- Controlled positive and negative duct pressurization.
- Calibrated leakage-flow measurement.
- Portable integrated field test system.
Introduction de produit
This self-contained tester connects to an isolated duct section, raises or lowers it to a defined pressure and measures the airflow required to hold that condition. A variable-speed blower, calibrated inlet and dual pressure channels allow the controller to calculate leakage rate during positive or negative tests. The wheeled enclosure and flexible test hose support field commissioning across large installations.
Key Features
Closed-loop control maintains the selected test pressure.
Calibrated inlet measurement quantifies stabilizing leakage airflow.
Dual pressure channels monitor duct pressure and flow element.
Guided controller calculates leakage rate and test duration.
Wheeled field enclosure organizes hose, cables and adapters.
Préoccupations du client produit
Duct leakage must be quantified at a stable specified pressure even though the system response changes with seal quality, section size and test direction.
Test pressure drifts as leakage changes during the run.Closed-loop blower control continuously adjusts flow to maintain the selected pressure.
One-direction equipment cannot assess both supply and extract ductwork.A reversible flow arrangement supports positive and negative pressure tests.
Leakage calculations vary when technicians use separate instruments.Integrated pressure and calibrated-flow channels calculate leakage within one guided workflow.
Large test equipment is difficult to move through an active site.A compact wheeled enclosure and stored flexible hose simplify relocation between duct sections.
Les applications typiques
Cleanroom supply-duct leakage testingExhaust and return duct commissioningNew ductwork quality verificationPost-repair airtightness checksHVAC leakage-class documentation
Paramètres techniques
Representative portable leakage-tester construction is shown below; blower capacity, calibrated flow range and hose size can be selected for the duct sections under test.
| Matériaux de base | Variable-speed centrifugal blower, calibrated flow nozzle, pressure sensors and powder-coated steel enclosure |
|---|---|
| Panneau épaisseur | Typically 1.0-2.0 mm for the steel cabinet panels |
| Largeur effective | Approximately 450-650 mm across the mobile enclosure |
| Longueur maximale | Approximately 700-1000 mm including wheeled cabinet and stored hose |
| Acier face épaisseur | Typically 1.0-2.0 mm for powder-coated steel enclosure panels |
| Densité Core | Approximately 7850 kg/m³ for structural steel components |
| Conductivité thermique | Approximately 45-55 W/(m·K) for structural steel components |
| surface finie | Safety-yellow powder-coated cabinet with graphite controls, black hose and stainless fittings |
| Type joint | Cam-lock flexible duct connection with sealed calibrated inlet and barbed pressure taps |
| Customisation | Disponible en fonction de l'application prévue et de l'environnement d'exploitation. |
Options disponibles
Low- or high-flow configurationPositive/negative test modeMultiple calibrated flow nozzlesFlexible connection hose sizesReport download and printingCouverture de transport de protection
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