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Системы контроля за чистыми помещениями и экологического мониторинга
Система управления воздушным потоком
A closed-loop airflow package that measures supply or exhaust volume and drives a modulating damper to maintain the commanded cleanroom air quantity.
- Closed-Loop Air Volume
- Multi-Point Duct Sensing
- Fast Damper Actuation
- Stable Low-Flow Control
Введение продукции
The airflow control system combines a duct averaging sensor, differential pressure transmitter, airflow controller and modulating damper actuator. The controller converts the measured velocity pressure into air volume using the configured duct area and continuously positions the damper. Low-flow cutoffs and sensor filtering prevent noisy readings from driving the actuator unnecessarily. The package can regulate supply, return or exhaust air and can share measured volume with the room pressure controller for coordinated cascade control.
Основные характеристики
Configured duct dimensions convert pressure signal into a usable airflow-volume value.
Modulating actuator feedback confirms the commanded damper position was reached.
Filtering, deadband and low-flow handling stabilize control near minimum ventilation rates.
Обеспокоенность клиентов продуктами
Reliable air-volume control depends on representative sensing and an actuator response matched to the duct and pressure conditions.
A single-point duct reading changes with turbulence and elbow location.A multi-point averaging pickup provides a more representative velocity-pressure signal.
The damper hunts around the minimum airflow setpoint.Appropriate filtering, deadband and low-flow cutoff prevent reaction to measurement noise.
The displayed air volume is wrong after a duct size change.Field-configurable duct area and sensor coefficient recalculate volume for the installed branch.
A disconnected actuator is not noticed until room pressure drifts.Position feedback and airflow deviation alarms identify failed movement before the room leaves its normal band.
Типичные приложения
Cleanroom supply-air branchesProcess exhaust regulationLaboratory make-up airPressure-cascade airflow tracking
Технические параметры
Typical construction for a cleanroom duct airflow controller and actuator package is listed below.
| Основной материал | Aluminum averaging probe, flame-retardant polymer controller and galvanized steel damper frame |
|---|---|
| Толщина панели | 60-140 mm controller and transmitter depth |
| эффективная ширина | 120-300 mm controller width |
| Максимальная длина | Averaging probes up to 2000 mm |
| Толщина линий стали | 0.8-1.5 mm galvanized steel damper casing |
| Плотность ядра | 2650-2750 kg/m³ for aluminum probe components |
| Теплопроводимость | 150-220 W/(m·K) for the aluminum sensing probe |
| Поверхностная отделка | Natural anodized aluminum probe with white controller and zinc-coated damper frame |
| Объединенный тип | Flanged duct pickup with barbed pressure ports and direct-coupled damper actuator |
| Customization | Доступно в зависимости от предполагаемого применения и операционной среды. |
Доступные варианты
Supply or exhaust configurationCircular or rectangular duct probesBACnet or Modbus controllerSpring-return damper actuator
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