<ISTLER measure, analyze, innovate. Absolute pressure sensorfor hydrogen applications The type 4012A is an absolute pressure sensor suitable for use in hydrogen environments. • Engineered for seamless performance with media containing up to 99.9% hydrogen • Built from advanced materials that resist hydrogen embrittlement, ensuring long-term durability • Incorporates a gold-plated diaphragm to significantly reduce hydrogen permeation, preserving measurement integrity • Delivers dynamic pressure measurements with precision • Equipped with cutting-edge digital temperature compensation, providing uncompromising accuracy in the most demanding environments Description In the type 4012A sensor, the pressure acts on a silicon load cell via a thin steel diaphragm and via oil as the transmission medium. The load cell contains implanted piezoresistive resistors connected to provide a Wheatstone measuring bridge. This bridge is unbalanced due to the action of pressure, producing an output signal that is proportional to the pressure. The sensor is specifically designed to ensure sensor stability and minimize the effects of hydrogen. The sensor components are manufactured from hydrogen compatible stainless steel. The sensor features gold-plated diaphragm to reduce hydrogen diffusion and ensure stable measurements. The type 4012A... has fully shielded cabling in order to deliver better signal quality. Kink protection minimizes cable damage. Connections, extension cables and amplifiers are standardized throughout the digitally compensated DS sensor family, which is equipped with PiezoSmart. This means that Type 4012A... can be integrated seamlessly with piezoresistive amplifiers Type 4624A... (single channel), Type 4665B... (SCP / KiBox1) and Type 4667A (KiBox2). Time is saved on measurements, and less equipment is required. Digital temperature compensation additionally minimizes temperature-induced zero point and sensitivity changes, without impairing the signal bandwidth. Furthermore, digital temperature compensation allows monitoring of the sensor temperature. Application The sensor type 4012A is specifically engineered for the development of hydrogen-powered internal combustion engines, capable of measuring hydrogen pressure with a purity of up to 99.9%. The sensor is versatile, suitable for both gas exchange analysis and pressure measurement in the low-pressure rail of hydrogen engines. Additionally, it can be utilized in the low-pressure range of a fuel cell to monitor hydrogen pressure. Technical data Measuring range (overload) This information corresponds to the current state of knowledge. Kistler reserves the right to make technical changes. Liability for consequential damage resulting from the use of Kistler products is excluded. © 2024 ... 2025, Kistler Group, Eulachstrasse 22, 8408 Winterthur, Switzerland Tel. +41 52 224 11 11, Fax +41 52 224 14 14, [email protected], www.kistler.com Kistler Group products are protected by various intellectual property rights. For more details visit www.kistler.com

Absolute pressure sensor for hydrogen applications,Type 4012A Technical data (continuation) <0.4 <0.2 **Rmin 20 fixed installation Fluid and gases compatible with stainless steel, alternative fuels incl. media containing hydrogen up to 99.9% Class IP67 Das Urheberrecht an dieser Zeichnung, die dem Empfänger persönlich anvertraut wird, verbleibt unserer Firma. Ohne unsere schriftliche Genehmigung darf die Zeichnung weder kopiert noch vervielfältigt, noch an Drittpersonen mitgeteilt oder zugänglich gemacht werden. Maintenance If the sensor shows any signs of a signal offset or a large deviation,...

Absolute pressure sensor for hydrogen applications,Type 4012A Fig. 3: Mounting tool type 1300A165, SW9 ... SW6 Das Urheberrecht an dieser Zeichnung, die dem Empfänger persönlich anvertraut wird, verbleibt unserer Firma. Ohne unsere schriftliche Genehmigung darf die Zeichnung weder kopiert noch vervielfältigt, noch an Drittpersonen mitgeteilt oder zugänglich gemacht werden. Fig. 4: Pressure fitting type 6483 Erste Proj.-Nr. Fig. 6: Extension cable type 4785A_1 Kopie Datum Erstmals verwendet Erste Proj.-Nr. measure. analyze. innovate. 100.256.374 - a - skbvdg - PS/DS VDok Grafik - öffentlich -...

Absolute pressure sensor for hydrogen applications,Type 4012A <ISTLERmeasure, analyze, innovate. Accessories included Type Accessories (optional) • Fork wrench insert SW 11 1300A75 This information corresponds to the current state of knowledge. Kistler reserves the right to make technical changes. Liability for consequential damage resulting from the use of Kistler products is excluded. © 2024 ... 2025, Kistler Group, Eulachstrasse 22, 8408 Winterthur, Switzerland Tel. +41 52 224 11 11, Fax +41 52 224 14 14, [email protected], www.kistler.com Kistler Group products are protected by various intellectual...