Bullet Sensors & Transducers e-Digest, Vol. 127, Issue 4, April 2011: Product News

    (ISSN 1726-5479)



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High-Performance Piezoresistive Pressure Transducers for Automotive Powertrain and Component Leak Testing



Farmington Hills, Michigan, USA – Kistler has announced the North American market introduction of Types 4260A and 4262A, two high-performance piezoresistive pressure transducer families, each designed to meet the demanding requirements of automotive powertrain and component leak testing applications, such as transmission and engine block assemblies, intake and exhaust manifolds, oil pans, water jacket liners, fuel rails, cylinder heads, shock absorbers and braking systems, as well as water, oil and fuel pumps.


The manufactured products of automotive OEMs and Tier 1, 2 and 3 suppliers must be designed and tested according to strict industry standards to ensure that critical quality, uniformity, safety and performance criteria are met. As a result, precision joining and assembly operations of automotive component parts and electrical systems are closely monitored. In addition, the hundreds of manufactured automotive components which must reliably contain a liquid, gas or vacuum to facilitate efficient and safe operation must be routinely tested for leaks. Thus, many types of factory floor in-line leak testing machinery incorporate a pressure transducer for highly accurate and repeatable leak testing and monitoring.


Design of Kistler Type 4260/62A transducers is based upon more than 30 years of field-proven pedigree in pressure sensing technology, developed across thousands of successful applications. With a measurement range of -14.7 to 5,000 psi, transducer construction consists of a MEMS sensing element, mounted within a high-integrity seal assembly that is fully isolated from pressure media by a welded 316L stainless steel or Hastelloy™ diaphragm. The sensing element exhibits the performance attributes of high accuracy, stability, repeatability and linearity, most essential to leak testing, with a proof pressure greater than 3X FS. In addition, the transducer assembly features a patented sealing method (US Patent 7,373,827) facilitating multiple measurement cycles without fatigue, a benefit for cyclic assembly line applications. The design also enables flexibility of pressure connections without the use of adaptors or ‘O’ rings. Surface mount electronics condition the output of the MEMS sensing element and provide temperature compensation from -4 to 250 ºF. Additional circuit boards can be added at the factory to configure a wide choice of voltage and mA electrical outputs, along with non-interactive zero and span calibration adjustments.


EMC protection, reverse polarity, power supply regulation, overvoltage and short circuit protections are standard, with optional additional protections available for ATEX environments, as well as optional compound and bi-directional pressure ranges, customer-configurable fittings and electrical connectors. Units are also available with calibration certificates that are A2LA accredited to ISO17025 or NIST traceable.










Bill Taylor

Application Manager – Manufacturing

Kistler North America

Tel.: +317.507.2497

E-mail: bill.taylor@kistler.com

Piezoresistive Pressure Transducer 4262A

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