Siemens QBM-3020, Siemens Differential Pressure
Siemens QBM-3020, Siemens Differential Pressure

Siemens QBM-3020 Series Differential Pressure Sensor

Siemens Differential pressure sensor QBM3020...D provide high measurement accuracy with an analog output signal of 4 to 20mA. And thanks to the built-in housing connectors for mounting, the installation of new Siemens sensor models is quick and easy. Its compact sensors are ideal for control and monitoring systems for ventilation and air pressure monitoring.


• Measuring the slightest differential pressures in ventilation and air conditioning ducts 

• Check air flows 

• Monitor filters and control fans 

• Pressure supervision in labs, production, and clean rooms 

• For acquiring variable air flow in VAV plants on the supply and extract air side 

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Tax /GST included

Siemens differential pressure sensor 3020...D acquires differential, over and under pressure of air and nonaggressive gases if a high degree of measuring accuracy and quality is required. It is also suited for measuring volume flow via differential pressure since the output signal can be set to extracting-the-root.


• High degree of measuring accuracy

• Adjustable characteristic curve (pressure-linear or extracting-the-root)

• Zero-point adjustment

• Simple and fast mounting thanks to integrated fixing angle bar in the housing

• Maintenance free thanks to excellent long-term stability

• Calibrated and temperature-compensated measuring signal

• Supplied with plastic tubing

• Very short response time

18 Items

Data sheet

Measuring Range
0 to 100 Pascals
LCD display (QBM3020-..D only), to digitally display the sensor signal in Pascal
Operating Conditions
Temp:0...70 °C
Operating Voltage
AC 24 V ±15 %, 50/60 Hz or DC 13.5...33 V
Analog Output
DC 0 to10 V
Power Supply
Safety extra low voltage (SELV/PELV)
Screw terminals
Protection class
IP 54
Provided alongwith and valid for 1 year, traceable to National Standards
92 x 94 x 49 mm
0.196 kg
1 Year

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