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Системы контроля за чистыми помещениями и экологического мониторинга
Датчик скорости воздуха
An insertion-type hot-film sensor that measures cleanroom duct air velocity directly and provides a linear signal for control or monitoring.
- Hot-Film Velocity Measurement
- Adjustable Probe Insertion
- Selectable Velocity Ranges
- Analog Output Options
Введение продукции
The duct air velocity sensor places a heated-film element in the moving airstream and determines velocity from the heat removed by the flow. A graduated stainless probe and adjustable flange position the sensing tip away from the duct boundary layer. Direction markings help align the element with the airflow, while selectable ranges match low- and high-velocity duct applications. The electronics provide a linear voltage or current output and can include a separate temperature signal for HVAC diagnostics.
Основные характеристики
An adjustable mounting flange places the sensing element at the selected duct depth.
Directional markings prevent installation with the element facing the wrong way.
Selectable output ranges improve signal resolution for different cleanroom duct velocities.
Обеспокоенность клиентов продуктами
A duct velocity sensor can be accurate only when its probe is oriented correctly and located outside strong turbulence or the wall boundary layer.
The probe is installed too close to the duct wall and reads a low local velocity.Graduated insertion and an adjustable flange place the element at a representative depth.
The sensor is rotated away from the airflow direction.A visible direction arrow aligns the hot-film element with the moving air.
One wide range gives weak resolution at normal low-speed operation.Selectable velocity ranges match the electrical span to the actual duct condition.
Dust accumulation changes thermal response over time.A smooth protected hot-film design reduces exposed geometry and allows planned inspection.
Типичные приложения
Cleanroom supply-air ductsReturn and exhaust branchesAHU airflow verificationLow-velocity process ventilation
Технические параметры
Typical materials and dimensions for an insertion hot-film duct air velocity sensor are shown below.
| Основной материал | Hot-film sensing element in 304 stainless steel probe with ABS and polycarbonate electronics head |
|---|---|
| Толщина панели | 35-55 mm electronics-head depth |
| эффективная ширина | 70-100 mm housing width |
| Максимальная длина | Up to 210 mm adjustable probe length |
| Толщина линий стали | 0.5-0.8 mm stainless steel probe tube |
| Плотность ядра | 7900-8030 kg/m³ for stainless probe components |
| Теплопроводимость | 14-17 W/(m·K) for 304 stainless steel probe |
| Поверхностная отделка | Satin stainless probe with light-gray housing and blue airflow-direction marking |
| Объединенный тип | Adjustable duct flange with gasket, M16 cable entry and screw terminals |
| Customization | Доступно в зависимости от предполагаемого применения и операционной среды. |
Доступные варианты
Low, medium or high velocity rangeVoltage or 4-20 mA outputAir temperature outputHeavy-environment probe
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