Miniature Low Pressure Flow-Through Sensors 26PC Series, Compensated/Unamplified 1 psi to 100 psi Datasheet Miniature Low Pressure Flow-Through Sensors The 26PC Series Miniature Low Pressure Flow-Through Sensors feature proven sensing technology that uses a specialized piezoresistive micromachined sensing element to offer high performance, reliability, and accuracy. Each sensor contains four active piezoresistive elements in a Wheatstone bridge configuration. When pressure is applied, the resistance changes and provides an output signal in mV proportional to the input pressure. The low power, compensated, unamplified Wheatstone bridge circuit design offers 1 psi through 100 psi sensing ranges in a variety of pressure port types and termination configurations. The mV output is available in both negative and positive voltage. Visit www.honeywell.com/sensing to download 3D CAD drawings in IGES and STEP format, and 2D drawings in PDF format. These sensors are intended for use with media compatible with plastics and media seals specified in the Nomenclature and Order Guide (see Figure 2). (2D drawings also provide plastic housing and port material information.) They are designed and manufactured according to ISO 9001 standards. What makes our sensors better? • Selectable seals available to match media used 26PCXXG6G 26PCXXG6D • Higher pressure ranges for use in high pressure applications • Minimal dead space inhibits bacterial growth • Available in both SIP and DIP packages • Available with cable harness to allow off-board sensing 26PCXXP5G For all available configurations, see Figure 3. Minimal Dead Space • Cable Harness AVAILABLE • SELECTABLE SEALS 2 sensing.honeywell.com Features and Benefits In-line use minimizes the number of pneumatic connections and helps reduce system dead space. Flow through design in miniature, plastic package Provides a reduced-cost alternative (versus stainless steel package) Integrated flow through design Eliminates the need for many additional connections and parts By matching pressure ranges to the application, we optimize resolution and improve system accuracy. Variety of pressure ranges from 1 PSI to 100 psi Allows use in a wide variety of applications Absolute, differential, wet-wet differential, gage and vacuum gage measurement types Allow customers to choose the sensor that fits their applications Robust media compatibility Requires no gel coating Durable Operable after exposure to frozen conditions Also available in DIP, SIP, and SMT packages Provides added design flexibility sensing.honeywell.com 3 Potential Applications MEDICAL HEMODIALYSIS May be used to monitor the correct pressure to help ensure optimal blood filtration Table 1. Absolute Maximum Ratings1 Characteristic Min. Typ. Max. Unit Note Supply voltage 2.5 10 16 Vdc – Input resistance 5.5 7.5 11.5 kOhm – Output resistance 1.5 2.5 3 kOhm – – – 1 ms 2 Time response Absolute maximum ratings are the extreme limits the device will withstand without damage. 1 Time required for the output to increase from 10% to 90% of span in response to a step change in input pressure from the specified min. to max. operating pressure. 2 Table 2. Technical Specifications Characteristic Operating temperature range: without EPDM seals with EPDM seals Compensated temperature range Storage temperature range Soldering terminal temperature/time Vibration Shock Life 4 sensing.honeywell.com Parameter -40 °C to 85 °C [-40 °F to 185 °F] -20 °C to 85 °C [-4 °F to 185 °F] 0 °C to 50 °C [32 °F to 122 °F] 55 °C to 100 °C [-67 °F to 212 °F] 315 °C [599 °F] max./10 s max. 10 G at 20 Hz to 2000 Hz 100 G for 11 ms 1 million cycles min. 26PC Series, Compensated/Unamplified Table 3. Performance Characteristics (Vcc =10.00 ±0.01 Vdc; Ta = 25 °C [77 °F]) Operating Pressure Range 0 psi to 1 psi Characteristic 0 psi to 5 psi 0 psi to 15 psi 0 psi to 30 psi 0 psi to 100 psi 38 psi-low Unit Note Typ. Max. Typ. Max. Typ. Max. Typ. Max. Typ. Max. Typ. Max. Span – 16.7 ±2 – 50 ±3 – 100 ±3 – 100 ±3 – 100 ±5 – 39.5 ±2 mV 1 Null offset – 0 ±1.5 – 0 ±1.5 – 0 ±1.5 – 0 ±1.5 – 0 ±2.0 – 0 ±1.5 mV 2 Linearity (Best Fit Straight Line, P2>P1) 0.25 0.5 0.4 0.5 0.25 0.5 0.1 0.2 0.4 0.6 0.1 0.5 %span 3 Null shift (0 °C to 25 °C; 25 °C to 50 °C) ±0.5 ±1.0 ±0.5 ±1.0 ±0.5 ±1.0 ±0.75 ±1.5 ±1.0 ±0.5 ±0.7 ±1.5 mV 4 Span shift (0°C to 25°C; 25 °C to 50 °C) ±1.0 ±2.0 ±1.0 ±1.5 ±0.75 ±1.5 ±0.75 ±1.5 ±0.5 ±1.5 ±1.0 ±1.5 %span 5 Repeatability and hysteresis ±0.5 – ±0.2 – ±0.2 – ±0.2 – ±0.2 – ±0.2 – mV 6 – 20 – 20 – 45 – 60 – 200 – 60 psi 7 Overpressure Span is the algebraic difference between the output signal measured at the upper and lower limits of the operating pressure range, where Port 2 (P2) > Port 1 (P1). 1 2 The output signal obtained when zero pressure is applied to all available ports. The maximum deviation of product output from a straight line fitted to the output measured over the specified operating pressure range, calculated according to BFSL. The straight line is fitted along a set of points that minimizes the sum of the square of the deviations of each of the points (“leastsquares” method), 3 The maximum deviation in offset due to changes in temperature over the compensated temperature range, relative to offset measured at a reference temperature of 25 °C. 4 The maximum deviation in span due to changes in temperature over the compensated temperature range, relative to full-scale span measured at a reference temperature of 25 °C. 5 Repeatability is the maximum difference between the output readings when the same pressure is applied consecutively, under the same operating conditions, with pressure approaching from the same direction within the specified operating pressure range. Hysteresis is the maximum difference between output readings when the same pressure is applied consecutively, under the same operating conditions, with pressure approaching from opposite directions within the specified operating pressure range. 6 Overpressure is the maximum pressure that may safely be applied to the product for it to remain in specification once pressure is returned to the operating pressure range. Exposure to higher pressures may cause permanent damage to the product. Unless otherwise specified, this applies to all available pressure ports at any temperature within the operating temperature range. 7 Figure 1. Circuit Diagram PIN 1 VCC PIN 2 OUTPUT A PIN 4 OUTPUT B PIN 3 GROUND Output “A” increases as P2 pressure increases. Symbol Description Output “B” deceases as P2 pressure increases. Vcc supply OUTPUT A bridge positive output GROUND ground OUTPUT B bridge negative output sensing.honeywell.com 5 26PC Series Miniature Low Pressure Flow-Through Sensors, Miniature Low Pressure Flow-Through Sensors Compensated/Unmplified Figure 2. Nomenclature and Order Guide1 For example, a 26PCBEG6G catalog listing defines a 26PC Series Miniature Low Pressure Flow-Through Sensor, Compensated/Unamplified 5 psi pressure range, EPDM seal material, small flow-through pressure port type, 1x 4 SIP/15,2 mm [0.60 in] long termination configuration, normal polarity output, and gage pressure measurement type. 26PC B E G Product Series Pressure Range Seal Material Pressure Port Type 26PC Series Miniature Low Pressure Flow-Through Sensors, Compensated/ Unamplified A 1 psi F fluorosilicone B 5 psi E EPDM C 15 psi N neoprene2 D 30 psi F 100 psi 6G Termination Configuration, Output, Pressure Measurement Type G Small flow-through 2G 2 x 2 DIP, normal polarity, gage P Flow-through, long ends, 5G 1 x 4 SIP for wire harness3, normal polarity, gage U Flow-through, short ends 6G 1 x 4 SIP, 15,2 mm [0.60 in] long, normal polarity, gage J 38 psi-low Every combination may not be possible. Contact customer service. 1 2 Available in 1 psi, 5 psi and 15 psi pressure ranges only. 3 Various wire harnesses with end connector options are available. Contact customer service. Figure 3. All Available Configurations 26PCXXG5G 26PCXXG6G Notes: 1. Every combination may not be possible. Contact customer service. 2. Available in 0.5 psi, 1 psi, 5 psi and 15 psi pressure ranges only. 3. Various wire harnesses with end connector options are available. Contact custom 26PCXXP2G 6 sensing.honeywell.com 26PCXXP5G 26PCXXU5G 26PC Series, Compensated/Unamplified Figure 4. Pressure Port Types and Termination Configuration Dimensions (For reference only: mm) 26PCXXG5G 26PCXXG6G sensing.honeywell.com 7 Miniature Low Pressure Flow-Through Sensors Figure 4. Pressure Port Types and Termination Configuration Dimensions (continued) 26PCXXP2G 26PCXXP5G 8 sensing.honeywell.com 26PC Series, Compensated/Unamplified Figure 4. Pressure Port Types and Termination Configuration Dimensions (continued) 26PCXXU5G 10,8 [0.43] sensing.honeywell.com 9 ADDITIONAL INFORMATION The following associated literature is available at sensing.honeywell.com: • Product Line Guide • Product Range Guide • Product Installation Instructions • Application-Specific Information • Technical Information WARNING 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. WARNING 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. WARRANTY/REMEDY Find out more Honeywell serves its customers through a worldwide network of sales offices, representatives and distributors. For application assistance, current specifications, pricing or name of the nearest Authorized Distributor, contact your local sales office. To learn more about Honeywell’s Honeywell warrants goods of its manufacture as being free of defective materials and faulty workmanship. Honeywell’s standard product warranty applies unless agreed to otherwise by Honeywell in writing; please refer to your order acknowledgement or consult your local sales office for specific warranty details. If warranted goods are returned to Honeywell during the period of coverage, Honeywell will repair or replace, at its option, without charge those items it finds defective. The foregoing is buyer’s sole remedy and is in lieu of all other warranties, expressed or implied, including those of merchantability and fitness for a particular purpose. In no event shall Honeywell be liable for consequential, special, or indirect damages. While we provide application assistance personally, through our literature and the Honeywell website, it is up to the customer to determine the suitability of the product in the application. Specifications may change without notice. The information we supply is believed to be accurate and reliable as of this printing. However, we assume no responsibility for its use. sensing and control products, call +1-815-235-6847 or 1-800-537-6945, visit sensing.honeywell.com, or e-mail inquiries to email@example.com Sensing and Control Honeywell 1985 Douglas Drive North Golden Valley, MN 55422 honeywell.com 32307743-A-EN GLO May 2015 © 2015 Honeywell International Inc. All rights reserved.
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