General
The QBM3700.. Modbus air pressure sensor and I/O extension is used in ventilation systems and air handling units (AHU):
- To measure and monitor pressure in air ducts and over filters and fans
- On the supply and extract air side
The QBM3700.. is ideally suited for a multitude of tasks in the HVAC industry:
- Measures relative and differential pressure and flow of air and non-aggressive gases
- Available with a differential pressure sensor
- Allows monitoring of pressure or volume flow at two individual points in the system
Features
- ● Modbus RTU communication interface
- Two analog inputs for 0...10 V or passive temperature elements
- One analog output for 0...10 V
- Available with a differential pressure sensor element
- Pressure sensor elements with high accuracy and long-term stability via ceramic strain-gauge technology at different pressure ranges from 0...500 – 2500 Pa
- Decentralized node provides simple installation and less wiring
- DIP switches for addressing and Modbus line termination
- Push button for automated on-event addressing together with Siemens Climatix controllers
Specifications
- Operating voltage: AC/DC 24 V
- Power consumption: 2 VA
- Analog output, signal: DC 0...10 V
- Analog outputs: 0...10 V
- Measuring range, pressure: 0…1250 Pa
- Degree of protection: IP54
- Dimensions (W x H x D): 146 x 81.9 x 60 mm
- Communication:Modbus RTU (RS-485)