Datasheet Differential Pressure Sensor ASP1400 - Sensirion - #1

Text version of the page

ASP1400 Bidirectional Differential Pressure Meter - Ultra low differential pressure from 100 Pa down to 0.002 Pa - Zero drift & offset free - Outstanding accuracy and resolution - Ultra fast response time - Fully calibrated & temperature compensated Digital output signal - Datasheet - April 2008 v2 ASP1400 Product Summary The ASP1400 differential pressure sensor is especially suited for measurements of ultra low pressure differences of gases and true mass flow measurements in bypass solutions. The micro-machined silicon sensor element of the ASP1400 enables extremely long term stable and offset free measurements. Its leading performance is based on SENSIRION's unsurpassed CMOSens® technology. With CMOSens®, the on-chip sensor element forms an integrated whole with the amplification and A/D converter circuit. This results in superior resolution, fast response time and large dynamic range at lowest power consumption. All measurement data is fully calibrated and temperature compensated by means of an internal micro controller. Mounted in rugged, chemically inert PBT housing the ASP1400 is suitable for a wide range of applications. Such include for example monitoring of clean room conditions, intrusion detection and almost unlimited bypass solutions in process control, building control as well as medical applications. Bypass solutions allow a true mass flow measurement. The sensor housing provides two inlets for measuring the differential pressure and withstands overpressures of 1 bar (15 psi). The ASP1400 requires a supply voltage of 7...18Vdc and provides an RS-232 electrical interface. ASP1400 DIFFERENTIAL PRESSURE SENSOR GND VDD CMOSens TECHNOLOGY Power Supply GAS FLOW VOLTAGE REGULATOR LU OC ZD co co LU OC Q_ CMOSens™ SENSOR CHIP MICRO CONTROLLER i RxD i TxD SPI interface interface is no longer supported _I < i— LU ai LU u_ ll o o < RS232 LINE DRIVER/ RECEIVER RS232 Interface EEPROM GAS FLOW Figure 1: Block Diagram ASP1400 Differential Pressure Sensor with CMOSens® technology www.sensirion.com Sensirion - the sensor company