SIEMENS Differential pressure sensor QBM3120-25D 24VDC 4-20mA 0 to +2500Pa with display
SIEMENS Differential pressure sensor QBM3120-25D 24VDC 4-20mA 0 to +2500Pa with display Differential pressure sensor for sensing the pressure difference, overpressure and underpressure of air and non-aggressive gases where high accuracy and measurement quality are required. It is also suitable for volumetric flow measurement using a pressure difference, as the output signal can be set to a square root characteristic.
High measurement accuracy Adjustable measuring characteristic (linear or square root) Operating voltage: QBM3020-..: AC 24 V / DC 13.5...33 V / QBM3120-..: DC 8...33 V Output signal: QBM3020-..: DC 0...10 V / QBM3120-..: 4...20 mA Setting the zero point Simple and quick installation using mounting brackets integrated into the sensor housing Maintenance-free due to excellent long-term stability Calibrated and temperature compensated measurement signal A plastic tube is included in the delivery Very short response time Displaying the current value depending on the type Fields of application Measurement of minimum pressure differences in ventilation and air conditioning pipes Air flow control Filter condition monitoring and fan control Pressure monitoring in laboratories, production zones and in clean environment operations Measurement of supply and exhaust air flow in VAV systems (with variable air flow)
Why choose SIEMENS Differential pressure sensor QBM3120-25D 24VDC 4-20mA 0 to +2500Pa with display:
SIEMENS Differential pressure sensor QBM3120-25D 24VDC 4-20mA 0 to +2500Pa with display Differential pressure sensor for sensing the pressure difference, overpressure and underpressure of air and non-aggressive gases where high accuracy and measurement quality are required. It is also suitable for volumetric flow measurement using a pressure difference, as the output signal can be set to a square root characteristic. High measurement accuracy Adjustable measuring characteristic (linear or square root) Operating voltage: QBM3020-..: AC 24 V / DC 13.5...33 V / QBM3120-..: DC 8...33 V Output signal: QBM3020-..: DC 0...10 V / QBM3120-..: 4...20 mA Setting the zero point Simple and quick installation using mounting brackets integrated into the sensor housing Maintenance-free due to excellent long-term stability Calibrated and temperature compensated measurement signal A plastic tube is included in the delivery Very short response time Displaying the current value depending on the type Fields of application Measurement of minimum pressure differences in ventilation and air conditioning pipes Air flow control Filter condition monitoring and fan control Pressure monitoring in laboratories, production zones and in clean environment operations Measurement of supply and exhaust air flow in VAV systems (with variable air flow)
Technical specifications:
| Measured variable | differential pressure |
| Measuring range | 0...2500 Pa |
| Supply voltage | DC 8...33 V (18...33 V for loads up to 500 Ω) |
| Output signal | 4...20 mA |
| Wiring | 2-wire |
| Power consumption | <0.7 VA |
| Sensing element | piezoresistive, silicone diaphragm |
| Measuring characteristic | linear or square-root |
| Zero-point adjustment | yes |
| Display | yes |
| Medium | air and non-corrosive gases |
| Application | HVAC, filter and fan monitoring, VAV systems |
