Cleanroom Testing and Validation Instruments

Pitot Tube

A stainless steel L-type Pitot-static tube with separate total and static pressure connections for duct velocity traverses and ventilation balancing.

Concentric total and static pressure sensing.
Etched depth marks for systematic duct traverses.
Durable slender stainless construction.

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Product Introduction

This Pitot tube uses a forward-facing impact opening and circumferential static ports to develop velocity pressure without electrical sensing elements. Its slender stainless shaft enters duct access holes with limited blockage, while etched insertion marks help repeat probe depth across a traverse. Separate high and low connections attach to a micromanometer for velocity calculation.

Key Features

Concentric total and static passages produce differential velocity pressure.

Stainless construction tolerates repeated duct insertion and cleaning.

Slender shaft minimizes blockage within the measured airflow.

Etched depth marks support repeatable traverse-point positioning.

Right-angle head aligns the impact opening with duct airflow.

Separate color-coded hose connections reduce polarity mistakes.

Customer Product Concerns

Accurate duct airflow measurement requires pressure sampling at prescribed depths while keeping the sensing head aligned and minimizing obstruction of the air stream.

A single centerline reading may not represent the duct average.Etched depth markings support a defined multi-point traverse across the duct area.

Probe insertion can disturb flow in a small duct.The slender shaft and compact sensing head limit blockage at each point.

Reversed pressure tubing creates invalid negative velocity pressure.Separate color-coded total and static outlets clarify the connection to the micromanometer.

Duct probes are exposed to handling and repeated cleaning.All-stainless construction provides a durable, smooth and cleanable surface.

Typical Applications

Supply and exhaust duct traversesCleanroom ventilation balancingAir-handler airflow verificationIndustrial exhaust testingCommissioning of high-velocity duct systems

Technical Parameters

Typical stainless Pitot-static construction values are shown below; shaft length, geometry and connection tubing can be selected for duct size and process conditions.

Core Material	Corrosion-resistant 304 stainless steel concentric pressure tubes
Panel Thickness	Typically 0.5-0.9 mm tube wall thickness
Effective Width	Approximately 6-8 mm outside diameter at the probe shaft
Maximum Length	350-1000 mm insertion lengths available
Steel Facing Thickness	Typically 0.5-0.9 mm for the stainless sensing tube wall
Core Density	Approximately 7900-8000 kg/m³ for 304 stainless steel
Thermal Conductivity	Approximately 16-17 W/(m·K) for 304 stainless steel
Surface Finish	Smooth satin stainless steel with permanently etched insertion graduations
Joint Type	Brazed concentric Pitot-static head with separate barbed total and static pressure outlets
Customization	Available based on the intended application and operating environment.

Available Options

350, 500 or 1000 mm shaft lengthL-type or straight designEtched insertion scaleSilicone or silicone-free tubingCompression access fittingProtective storage tube

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