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الألمانية
العربيةالحالي
الفرنسية
الإندونيسية
اليابانية
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اللغة الملاوية
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الروسية
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اللغة الفيتنامية
أنظمة توزيع الهواء في الغرف النظيفة
Duct
A permanently installed multi-point sensing assembly that converts representative duct velocities into continuous volumetric airflow and temperature data.
- Multi-Point Velocity Traverse
- Low-Airflow Measurement
- Remote Digital Transmitter
- Supply or Exhaust Monitoring
مقدمة المنتج
The duct airflow measuring station uses several bead-in-glass thermal sensors distributed across the duct cross-section to capture a representative velocity traverse. Each node compares a heated element with a reference temperature element, and the remote transmitter combines the readings with the entered duct area to calculate volumetric or mass airflow. Stainless-steel probes, plenum-rated cables and an external display enclosure suit permanent installation where operators need more than a one-time balancing reading. Analog and network outputs can feed room-pressure control, air-change verification or maintenance trending.
الخصائص الرئيسية
Thermal-dispersion measurement operates at the low duct velocities common in ventilation and pressure-tracking branches.
A remote transmitter displays airflow and temperature while isolating electronics from the active duct section.
Selectable analog and serial communications support connection to airflow alarms or a building control system.
مخاوف المنتج للعملاء
Reliable airflow control depends on a measurement point that represents the whole duct profile and remains stable at low velocity.
An elbow or transition creates a skewed velocity profile across the measuring plane.A multi-node probe array averages velocities over the duct area instead of reporting one unrepresentative point.
Pitot-style pressure signals become too small for dependable low-flow tracking.Thermal-dispersion sensor nodes retain useful resolution at substantially lower air velocities.
A failed probe remains unnoticed while the control loop continues using a false total.Node-status diagnostics and configurable alarms identify sensor or transmitter faults for maintenance.
Temporary balance readings do not show later drift caused by filter or fan changes.Permanent measurement provides continuous total airflow and a recordable signal for trend comparison.
تطبيقات نموذجية
Cleanroom supply-air verificationReturn and exhaust airflow trackingLaboratory pressure-control systemsOutdoor-air delivery monitoringAir-change-rate performance trending
المعلمات الفنية
Typical construction and dimensional ranges for a permanent multi-point duct airflow station are listed below.
| المواد الأساسية | 304 stainless-steel probe tubes with hermetically sealed thermistor nodes and plenum-rated sensor cables |
|---|---|
| سمك اللوحة | 1.0–2.0 mm stainless probe supports and mounting plates |
| العرض الفعال | 100–2500 mm duct traverse width using one or more probes |
| الحد الأقصى الطول | Up to 2500 mm active probe length for rectangular duct arrays |
| الصلب يواجه سمك | 1.0–2.0 mm stainless mounting flange and probe bracket |
| الكثافة الأساسية | Approximately 8000 kg/m³ for 304 stainless-steel probe components |
| الموصلية الحرارية | Approximately 14–16 W/(m·K) for 304 stainless-steel probe components |
| إنهاء السطح | Clean passivated stainless probes with powder-coated remote transmitter enclosure |
| نوع المشترك | Duct-insertion compression flange with sealed cable glands to a remote transmitter |
| التخصيص | متوفر على أساس التطبيق المقصود وبيئة التشغيل. |
الخيارات المتاحة
Round-duct single-probe configurationRectangular multi-probe traverse arrayAnalog 0–10 V or 4–20 mA outputsBACnet or Modbus communication interface
Planning a Duct Airflow Measuring Station specification?
أرسل لنا الأبعاد الخاصة بك، شروط التثبيت، أهداف الأداء والتشطيب السطحي المطلوب.
