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Systèmes de contrôle des salles blanches et de surveillance environnementale

Capteur de pression statique duct par

A static-pressure pickup and transmitter package that measures cleanroom duct pressure without directly sensing the moving-air velocity head.
  • Static Pressure Pickup
  • Low-Range Signal Output
  • Fan Control Feedback
  • Sealed Duct Mounting
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Introduction de produit

The duct static pressure sensor combines a properly oriented wall pickup with a low-pressure transmitter. The pickup opening is arranged to minimize direct exposure to velocity pressure, allowing the transmitter to represent duct static condition. A flexible tube connects the pickup to the protected electronics outside the duct. The resulting analog or digital signal supports supply-fan control, high-pressure alarm and diagnosis of restricted or undersupplied duct sections.

Key Features

A flush or shielded pickup reduces influence from the moving-air velocity component.

Low-pressure signal conditioning produces a stable control value for variable-speed fans.

The transmitter stays outside the duct for accessible wiring and zero service.

Selectable ranges match branch, main-duct and plenum pressure applications.

Préoccupations du client produit

Static pressure readings are easily biased when the pickup faces the flow, leaks at the duct wall or sits in highly turbulent air.

The pickup captures velocity pressure and reports an artificially high value.A static tip or flush wall port samples perpendicular to the airflow direction.
Air leaks around the mounting hole distort the low-pressure signal.A gasketed flange seals the duct penetration around the pickup.
The fan control signal is noisy after a bend or damper.Appropriate location and transmitter filtering reduce turbulence-driven variation.
Zero calibration requires entry into the duct.The external transmitter provides accessible zero controls and removable tubing.

Les applications typiques

AHU fan static-pressure controlCleanroom supply manifoldsReturn and exhaust plenumsDuct high-pressure alarms

Paramètres techniques

Typical materials and dimensions for a duct static pressure sensor package are shown below.

Matériaux de base304 stainless static pickup with silicone tubing and flame-retardant polymer pressure transmitter
Panneau épaisseur45-80 mm transmitter depth
Largeur effectiveLargeur de l'émetteur 90 - 150 mm
Longueur maximaleStatic probes up to 250 mm
Acier face épaisseur0.5-0.8 mm 304 stainless pressure pickup
Densité Core7900-8030 kg/m³ for stainless sensing parts
Conductivité thermique14-17 W/(m·K) for 304 stainless steel pickup
surface finieSatin stainless pickup with light-gray transmitter and blue pressure label
Type jointGasketed duct flange, barbed pressure tube and removable electrical terminal
CustomisationDisponible en fonction de l'application prévue et de l'environnement d'exploitation.

Options disponibles

Flush or insertion pickupVoltage or 4-20 mA outputSelectable pressure rangesLocal LCD

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