FEATURES· Low Cost· High-Impedance Bridge· Absolute and· Differential (Gauge)· Low Noise· Low Power Consumption for Battery Power TYPICAL APPLICATIONS· Medical· Instrumentation· Barometric· Measurement· Pneumatic Controls· Battery Powered Equipment EQUIVALENT CIRCUITS
GENERAL DESCRIPTION The SX Series pressure sensors provide the lowest cost components for measuring pressures to 150 psi. These sensors are designed for use with non-corrosive, non-ionic media, such as air and dry gases. Convenient pressure ranges are available to measure differential, gauge, and absolute pressures from 0 psi to 1 psi to 0 psi to 150 psi (SX150). The Absolute (A) devices have an internal vacuum reference and an output voltage proportional to absolute pressure. The differential (D) devices allow application of pressure to either side of the diaphragm and can be used for gauge or differential pressure measurements. This product is packaged in either the standard low cost chip carrier "button" package, a plastic ported "N" package, or a DIP package. All packages are designed for applications where the sensing element is integral to the OEM equipment. These packages can be o-ring sealed, epoxied, and/or clamped onto a pressure fitting. A closed-bridge four pin SIP configuration is provided for electrical connection to the "Button" or "N" Package. The DIP Package mounts a PC board like a standard IC with through-hole pins. This extremely small size package enables the use of multiple sensors in applications with limited space.
PERSONAL INJURY DO NOT USE these products as safety or emergency stop devices or in any other application where failure of the product could result in personal injury. Failure to comply with these instructions could result in death or serious injury.
MISUSE OF DOCUMENTATION· The information presented in this product sheet is for reference only. Do not use this document as a product installation guide.· Complete installation, operation, and maintenance information is provided in the instructions supplied with each product. Failure to comply with these instructions could result in death or serious injury.
Supply Voltage, VS Operating Temperature Range Storage Temperature Range Humidity Common-mode Pressure Lead Soldering Temperature 12 Vdc to 185 °F] to 257 °F] RH 150 psig °C [482 °F] 2 sec to 4 sec
Characteristic Description (2) Zero Pressure Offset (3,4) Temperature Coefficient of Offset (5) Combined Pressure Non-Linearity, and Hysteresis (6) Long Term Stability of Offset and Span (7) Response Time Input Resistance (3,4) Temperature Coefficient of Resistance (3,4) Temperature Coefficient of Span Output Resistance (8) Repeatability
Part Number SX100 SX150 Operating Pressure Range 0 psi to 1 psi 0 psi to 5 psi 0 psi to 15 psi 0 psi to 30 psi 0 psi to 100 psi 0 psi to 150 psi Sensitivity (mV/V/psi) Typ
Specification Notes: Note 1: Reference Conditions; °C [77 °F], Supply = 5 Vdc; Common Line Pressure = 0 psig, Pressure Applied to P1 Note 2: The zero pressure offset 0 mV minimum -20 mV typical and 35 mV maximum for part numbers SXxxxGD2 and SXxxxDD4. Note 3: Slope of best straight line fit from to 70°C. For operation outside this temperature range, contact factory for more information. Note 4: This parameter is not 100% tested. It is guaranteed by process design. Note 5: Pressure Hysteresis - the maximum output difference at any point within the operating pressure range for increasing and decreasing pressure. Pressure Non-linearity the maximum deviation of measure output, at constant temperature °C [77 °F]), from "best straight line" through three points (offset pressure, full-scale pressure, one-half full scale pressure). Note 6: Long term stability over a one year period. Note 7: Response time for a 0 psi to Full-Scale Span pressure step change, to 90% rise time. Note 8: Maximum difference in output at any pressure within the operating pressure range and the temperature range within to 158 °F] after: a) 100 temperature cycles, 0 °C and to 158 °F] b) 1 million pressure cycles, 0 psi to full-scale span. Note 9: Full-scale span is the algebraic difference between the output voltage at full-scale pressure and the output at zero pressure. Full-scale span is ratiometric to the supply voltage. Note 10: Exceeding maximum pressure can cause permanent sensor failure
Pressure Range to 1 psid or psig to 5 psid or psig 0 psia to 15 psia 0 psia to 30 psia 0 psia to 100 psia 0 psia to 150 psia to 15 psid or psig to 30 psid or psig to 100 psid or psig to 150 psid or psig Button Package SX100D SX150D Order Part Number Nipple Package "N" Package SX100DN
PHYSICAL DIMENSIONS for reference only mm [In] Button Package