เซนเซอร์วัดความดันแตกต่าง Differential Pressure Sensors

Differential Pressure Sensors
for air or nonaggressive gases

- Pressure-linear characteristic with selectable pressure measuring range
- Operating voltage AC 24 V or DC 13.5...33 V
- Output signal DC 0...10 V
- Delivery with tubing connection set

Use
For acquiring the differential pressure of air or nonaggressive gases in ventilation, air conditioning and heating plant.
The differential pressure sensors are used to:
- Acquire over- or underpressure in air ducts in relation to ambient pressure
- Monitor filters and to control fans
- Acquire pressure differentials between different rooms

Type summary
QBM66.201 0...100 Pa 0...200 Pa +-5000 Pa DC 0...10 V
QBM66.202 0...250 Pa 0...500 Pa +-10000 Pa DC 0...10 V
QBM66.203 0...1500 Pa 0...3000 Pa +-20000 Pa DC 0...10 V
QBM66.204 0...500 Pa 0...1000 Pa +-10000 Pa DC 0...10 V

Technical data
Power supply
Operating voltage: AC 24 V +-20% or DC 13.5...33 V
  Safety extra low-voltage (SELV) or protective extra low-voltage (PELV): HD384
Frequency: 50/60 Hz
Power consumption: <0.5 VA
Current draw: <15 mA at DC 33 V
Signal output
Output voltage: DC 0...10 V
Burden (RLast): >10 k?
Output: not galvanically separated, 3-wire connection, short-circuit-proof and protected against reversed polarity
Functional data
Measuring range: see "Type summary"
Sensing element: piezoresistive (silicon rubber diaphragm and ceramic lever)
Measuring