1240 UltraStable™ • PC Board Mountable Pressure Sensor • 0-50 mV Output • Voltage Excitation • Gage, Differential, and Absolute • Temperature Compensated DESCRIPTION The 1240 is a high performance temperature compensated, piezoresistive silicon pressure sensor packaged in a dual-in-line configuration. It is intended for cost sensitive applications where excellent performance and long-term stability are required. When using the 1240 with a fixed voltage reference and current set resistor as shown in the application schematic, a span of 50mV and 1% interchangeability can be achieved. Integral temperature compensation is provided over a range of -20°C to +85°C using laser-trimmed resistors. Absolute, differential and gage pressure ranges from 0-15 to 0-100 psi are available. Multiple lead and tube configurations are available for different applications. Please refer to the 1210 and 1220 information on products with operating pressures less than 0-15 psi. For current excitation, please refer to the Model 1230. FEATURES • • • • • APPLICATIONS Dual-in-Line Package -20ºC to +85ºC Compensated Temperature Range ±0.1% Non Linearity 1.0% Interchangeable Span (provided by current set resistor) Solid State Reliability • • • • • • Medical Instruments Airspeed Measurement Process Control Factory Automation Leak Detection Handheld Calibrators STANDARD RANGES Range 0 to 2 0 to 5 0 to 15 0 to 30 0 to 50 0 to 100 1240 psia • • • • psid • • • • • • www.meas-spec.com 1/4 psig • • • • • • April 2012 1240 UltraStable™ PERFORMANCE SPECIFICATIONS Supply Voltage: See application schematic Ambient Temperature: 25°C (unless otherwise specified) PARAMETERS Span MIN TYP MAX UNITS NOTES 49.5 50 50.5 mV 1 Zero Pressure Output -2 2 mV Pressure Non Linearity -0.1 ±0.05 0.1 %Span Pressure Hysteresis -0.1 ±0.01 0.1 %Span Input Resistance 2200 4000 5800 Output Resistance 4200 2 Ω Ω Temperature Error – Span -0.5 ±0.3 0.5 %Span 3 Temperature Error – Zero -0.5 ±0.1 0.5 %Span 3 Temperature Coefficient – Resistance 0.15 %/ºC 3 Thermal Hysteresis – Zero ±0.05 %Span 3 Short Term Stability (Offset & Span) ±0.05 %Span 4 Long Term Stability (Offset & Span) ±0.1 %Span 5 Supply Voltage Reference 1.235 V 1 Response Time (10% to 90%) 1.0 mS 6 Output Noise (10Hz to 1kHz) 1.0 Pressure Overload Compensated Temperature -20 µV p-p 3X Rated +85 °C °C Operating Temperature -40 +125 Storage Temperature -50 +150 °C 3 grams Weight Solder Temperature 250ºC Max 5 Sec. Media Non-Corrosive Dry Gases Compatible with Silicon, Pyrex, RTV, Gold, Ceramic, Nickel, and Aluminum 7 Notes 1. Refer to application schematic. 2. Best fit straight line. Non Linearity for 2 PSI is ±0.2% 5 PSI is ± 0.50%. 3. Maximum temperature error between -20°C and +85°C with respect to 25°C. 4. Short term stability over 7 days with constant current and temperature. 5. Long term stability over a one year period with constant current and temperature. 6. For a zero-to-full scale pressure step change. 7. 2X maximum for 100 psi device. Application Schema 1240 www.meas-spec.com 2/4 April 2012 1240 UltraStable™ DIMENSIONS CONNECTIONS 1240 www.meas-spec.com 3/4 April 2012 1240 UltraStable™ APPLICATION SCHEMATIC ORDERING INFORMATION 1240 - 015 G - 3 S Pressure Tubes (L = Long, S = Short, N = None) Lead Configuration (1,3 - See Dimensions Diagram) Type (G= Gage, A = Absolute, D = Differential) Pressure Range Model NORTH AMERICA EUROPE Measurement Specialties 45738 Northport Loop West Fremont, CA 94538 Tel: 1-800-767-1888 Fax: 1-510-498-1578 Sales: [email protected] Measurement Specialties (Europe), Ltd. 26 Rue des Dames 78340 Les Clayes-sous-Bois, France Tel: +33 (0) 130 79 33 00 Fax: +33 (0) 134 81 03 59 Sales: [email protected] ASIA Measurement Specialties (China), Ltd. No. 26 Langshan Road Shenzhen High-Tech Park (North) Nanshan District, Shenzhen 518057 China Tel: +86 755 3330 5088 Fax: +86 755 3330 5099 Sales: [email protected] The information in this sheet has been carefully reviewed and is believed to be accurate; however, no responsibility is assumed for inaccuracies. Furthermore, this information does not convey to the purchaser of such devices any license under the patent rights to the manufacturer. Measurement Specialties, Inc. reserves the right to make changes without further notice to any product herein. Measurement Specialties, Inc. makes no warranty, representation or guarantee regarding the suitability of its product for any particular purpose, nor does Measurement Specialties, Inc. assume any liability arising out of the application or use of any product or circuit and specifically disclaims any and all liability, including without limitation consequential or incidental damages. Typical parameters can and do vary in different applications. All operating parameters must be validated for each customer application by customer’s technical experts. Measurement Specialties, Inc. does not convey any license under its patent rights nor the rights of others. 1240 www.meas-spec.com 4/4 April 2012