SDP1000 / SDP2000
For cost sensitive HVAC and medical OEM applications Unsurpassed performance thanks to CMOSens
® technology Offset and hysteresis free Excellent accuracy and reproducibility even below 10 Pa Fully calibrated and temperature compensated Linear or square root extracted output characteristics available Not sensitive to the mounting orientation Direct PCB mounting with simple snap-on system
actual size
Data Sheet – June 2005 v2.7 SDP1000 / SDP2000 Product Summary
The SDP1000 / SDP2000 differential pressure trans-ducers for air cover the following measurement ranges: –5 to 125 Pa (0.5 inch H
2 O), -20 to 500 Pa (2 inch H
2 O), and -100 to 3500 Pa (14 inch H V output or other interfaces (see Figure 8). Its leading performance is based on Sensirion’s proprietary CMOSens
2 O). Mounted in a rugged, chemically inert PPS housing the SDP1000 / SDP2000 differential
industrial pressure sensors feature a unique dynamic range, zero offset and unsurpassed long term stability. This makes it an ideal fit for demanding yet cost sensitive OEM applications in HVAC and medical equipment. The devices are supplied with 5.0 V and provide a 0.25…4.0 V output. Although the output of the SDP1000 / SDP2000 differential pressure
transducer is analog, the internal linearization and temperature compensation is performed digitally. This results in a superior accuracy, outstanding resolution (up to 0.05 Pa), and lowest temperature dependence. The SDP1000 and the SDP2000 are available with a linear or square root extracted output characteristics at the same price. Since fully exchangeable just a few external electronic components around the SDP1000 / SDP2000 make a high quality differential sensor transmitter with e.g. an 0...10
® sensor technology which combines the sensor element with
amplification and A/D conversion on one single silicon chip. The differential pressure is measured by a
thermal sensor element. In contrast to other thermal differential pressure sensors only a very small amount of air is required (see Figure 6). This leads to a reliable operation even under harsh conditions. In comparison to membrane based sensors the SDP1000 / SDP2000 differential pressure sensors show an extended measurement range, better offset stability and improved reproducibility even at lowest pressure ranges (see Figure 1 and 2). In addition the SDP1000 / SDP2000 is robust against pressure bursts and shows no sensitivity to the mounting orientation.
Applications Block Diagram
- Variable air volume systems (VAV) - Filter pressure drop - Fan/ventilator control - Duct air flow measurements - Room/cabin pressure control - Industrial burner control - CPAP equipment - Sleep apnea monitors
CMOSens ® V DD SENSOR CHIP 5.0 VOUT0.25 Vto 4 VGND Memory DifferentialpressureSensor DIGITALLinearization andTemperaturecompensation D/Aconverter A/D converter www.sensirion.com Sensirion AG, Laubisrütistr. 50, 8712 Stäfa ZH, Switzerland, Tel: +41 44 306 40 00, Fax: +41 44 306 40 30