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أنظمة التحكم في الغرف النظيفة والمراقبة البيئية
مرسل الضغط التفاضلي
A wall-mounted transmitter that converts low differential pressure into a stable analog or digital signal for cleanroom controllers and monitoring systems.
- Field-Selectable Pressure Ranges
- Analog and Network Outputs
- Stable Zero Reference
- Service-Friendly Enclosure
مقدمة المنتج
The differential pressure transmitter combines a compensated sensing element, signal conditioning and field terminals in a protective enclosure. Selectable ranges let one hardware platform serve room pressure, filter loading and low-pressure duct applications while preserving appropriate resolution. Voltage or current output integrates with standard controllers, and selected versions add a digital network interface or local display. Removable terminals and front-access zero control simplify service without disturbing the wall-mounted tubing arrangement.
الخصائص الرئيسية
Stable voltage or current output provides a standard signal for PLC, DDC and EMS inputs.
Front-access zero adjustment supports maintenance without removing pressure tubing.
A protected enclosure separates field wiring from the pneumatic sensing section.
مخاوف المنتج للعملاء
A transmitter must preserve low-pressure resolution while offering field wiring, range selection and service access suitable for installed systems.
One fixed range cannot cover rooms, filters and ducts without poor resolution.Selectable full-scale ranges match the signal span to each measurement point.
A controller input requires current output but the transmitter provides voltage only.Configurable voltage and current signals support common building-control input types.
Zero checks require disconnecting tubing and rewiring the device.Front-access controls and removable terminals simplify in-place maintenance.
Condensation or dust reaches the circuit compartment through field entries.Separated pneumatic and wiring zones with sealed cable entries protect the electronics.
تطبيقات نموذجية
Cleanroom differential monitoringHEPA filter differential monitoringDuct static pressureAirflow pickup conversion
المعلمات الفنية
Typical construction values for a wall-mounted low differential pressure transmitter are shown below.
| المواد الأساسية | Silicon MEMS element in flame-retardant polymer enclosure with nickel-plated brass tubing ports |
|---|---|
| سمك اللوحة | 45-75 mm transmitter depth |
| العرض الفعال | 90-140 mm housing width |
| الحد الأقصى الطول | Up to 180 mm housing height |
| الصلب يواجه سمك | 0 mm; impact-resistant polymer enclosure |
| الكثافة الأساسية | 1180-1450 kg/m³ for polymer enclosure components |
| الموصلية الحرارية | 0.19-0.35 W/(m·K) for polymer housing material |
| إنهاء السطح | Smooth light-gray housing with blue range label and transparent service cover |
| نوع المشترك | Dual barbed pressure ports with removable screw terminals and sealed cable entry |
| التخصيص | متوفر على أساس التطبيق المقصود وبيئة التشغيل. |
الخيارات المتاحة
Voltage or 4-20 mA outputBidirectional pressure rangesLocal LCDBACnet or Modbus output
Planning a Differential Pressure Transmitter specification?
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