Datasheet Differential Pressure Sensor SDP1000/20000 pages

SDP1000 / SDP2000 Low Range Differential Pressure Sensor for Air and Non-Aggressive Gases - 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 - v4.0 SDP1000 / SDP2000 Product Summary The SDP1000 / SDP2000 differential pressure sensors for air cover the following measurement ranges: -5 to 125 Pa (0.5 inch H2O), -20 to 500 Pa (2 inch H2O), and -100 to 3500 Pa (14 inch H2O). Mounted in a rugged, chemically inert PPS housing the SDP1000 / SDP2000 differential 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...4.0V output. Although the output of the SDP1000 / SDP2000 differential pressure sensor 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 is 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 V output or other interfaces (see Figure 8). Its leading performance is based on Sensirion's proprietary CMOSens® 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). Thhis 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. SDP1000 / SDP2000 is fully RoHS compliant. Applications Block Diagram Medical HVAC Automotive Process Automation .!5 d ^ c !5 o CD co 5 -W CMOSens® SENSOR CHIP 5.0 V GND OUT 0.25 V to 4 V CD CD C O O ro 2> o LJ < ~ E e e www.sensirion.com Sensirion - the sensor company