Siemens Differential Pressure Monitor Switch P/N: QBM81-3, 101001A
Siemens Differential Pressure Monitor Switch QBM81-3 (P/N: 101001A)
Product Overview
The Siemens QBM81-3 Differential Pressure Monitor Switch is a highly reliable and accurate pressure monitoring device designed for HVAC, industrial ventilation, clean room, and air handling applications. Engineered to monitor differential pressure, overpressure, and underpressure, the QBM81-3 provides dependable switching performance for airflow verification, filter monitoring, fan status detection, and pressure control systems. Its robust construction and long-term stability make it an ideal choice for demanding commercial and industrial environments.
Key Features
- Differential pressure monitoring range: 20 to 300 Pa
- Suitable for air and non-aggressive gases
- Adjustable switching point for precise control
- SPDT switching contact output
- High long-term stability and reliability
- IP54-rated housing for industrial environments
- Factory-calibrated for easy installation
- Compact and lightweight design
- Over 1 million switching cycles for extended service life
- Includes air duct connectors and PVC tubing for installation convenience
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Siemens |
| Model Number | QBM81-3 |
| Part Number | 101001A |
| Pressure Range | 20 – 300 Pa |
| Media | Air and Non-Corrosive Gases |
| Output Type | SPDT Switching Contact |
| Protection Class | IP54 |
| Operating Temperature | -30°C to +85°C |
| Housing Material | Fiberglass Reinforced Polycarbonate |
| Service Life | >1,000,000 Switching Cycles |
| Application | HVAC & Industrial Air Pressure Monitoring |
Applications
- Air Handling Units (AHU)
- HVAC Systems
- Clean Rooms
- Ventilation Duct Monitoring
- Air Filter Condition Monitoring
- Fan and Belt Failure Detection
- Positive & Negative Pressure Monitoring
- Laboratories and Pharmaceutical Facilities
- Commercial Buildings and Industrial Plants
- Building Automation Systems (BMS)
Condition: New-Open Box
Product Summary
100% Genuine Products | 30 Days Return Policy
*You are only buying what you see in photos*
DESCRIPTION : Differential Pressure Monitor Switch
MAKER : Siemens
P/N : QBM81-3, 101001A
CONDITION : NEW-OPEN BOX
[Check photos – You get what you see in photos]
[Please understand the product before buying]
Taxes & import duties
- Destination country all taxes & duty to be paid by buyer.[not included in price].
Packing
- Quality packing for each product.
- Assured safe and undamaged delivery.
Shipping
- FedEx Express, DHL Express International Shipping.
- Shipping through sea available for large order.
RETURN POLICY
- Returns accepted 30 days. Buyers pay courier charges. Restocking Fee 20%
- Please check the listing properly as returns are not accepted in only for parts products.
Specifications
- Brand
- Siemens
- Condition
- New- In Company Packaging
- Country of Origin
- Switzerland
- Model
- QBM81-3
- Part Number
- 101001A
- Pressure Range
- 20 – 300 Pa
- Operating Temperature
- -30°C to +85°C
- Output Type
- SPDT Switching Contact
- Availability
- In stock(20 units available)
Category & Brand
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