This article was originally published on July 25, 2022, and was updated on May 21, 2025.
In tough OEM environments, reliable pressure measurement isn't a given, but it is a necessity. From the rugged terrain of agricultural machinery to the high-stakes precision of performance racing, selecting the right pressure transducer can make all the difference in system performance and longevity. Getting it wrong can affect both your product and your customers.
For more than a century, Ashcroft has been a trusted partner that OEMs and system integrators rely on to meet quality, delivery and budget requirements, ensuring you always have the right pressure and temperature instruments for the job.
Read this article to explore the features, capabilities and specifications of the Ashcroft® S1 OEM Pressure Transducer. This high-quality, robust and economical sensor is designed for large-volume manufacturing at an economical cost and is available for quick lead times. When you finish reading, you will have enough information to decide if this pressure sensor is a good fit for your OEM system.
The Ashcroft® S1 OEM Pressure Transducer: Engineered for challenging applications
Ashcroft built the S1 OEM Pressure Transducer with a compact, rugged design engineered for durability in physically and environmentally harsh conditions where other sensors may fail. This includes exposure to:
- Shock and vibration. Common in mobile hydraulics and heavy machinery such as excavators, cranes, and utility vehicles.
- Extreme temperatures. Frequently encountered in HVAC systems, refrigeration units, and engine compartments.
- High pressure cycling. Typical of hydraulics and fluid power systems, where rapid, repeated pressure changes can degrade lesser components.
Thanks to its durable construction and reliability, the S1 transducer is a preferred solution for a variety of OEM applications, including:
- Mobile hydraulics: Commonly found in excavators, cranes and utility vehicles
- Performance racing: For accurate monitoring of brake, fuel, oil, and boost pressure under extreme conditions.
- Agricultural equipment: Ideal for tractors, sprayers, and irrigation systems that operate in rugged field environments.
- HVAC and refrigeration: Supports commercial and industrial systems where precise and stable measurements are critical.
- Industrial automation: Ensures reliable process control and monitoring across a range of automated systems.
Featuring chemical vapor deposition (CVD) advanced sensing technology
At the core of the Ashcroft® S1 OEM Pressure Transducer is our proven Chemical Vapor Deposition (CVD) technology. This highly advanced, field-proven, thin-film method bonds polysilicon strain gauges directly to a stainless-steel diaphragm. The technology is extremely effective in pressure sensors that are used in mid- to high-pressure applications.
Our CVD technology gives the S1 OEM Pressure Sensor an edge over conventional piezoresistive or ceramic sensors, making it a dependable, high-performance option for OEM applications where conditions are rough. That's one reason OEMs rely on this instrument for their systems. Here are a few others:
- Accuracy. The S1 OEM Pressure Sensor is manufactured to Ashcroft's TruAccuracy™ terminal point standard. This simple standard ensures reliable and repeatable measurements and eliminates any confusion caused by statistically derived accuracy specifications. It also requires no additional calibration at the time of installation.
- Long-term stability. With reduced drift, this sensor gives you the ability to test pressure with the same tool and get consistently accurate, repeatable readings over time. No need for a span adjustment.
- High cycle life. It's CVD technology has the resistance needed to last through millions of cycles.
Other benefits of this OEM pressure transducer
Beyond CVD technology, the S1 offers benefits that enhance its suitability for demanding OEM applications:
- Pressure ranges: Available from vacuum up to 10,000 psi, accommodating various application needs.
- All-wetted stainless steel wetted materials. No glues, epoxies or o-rings, and no leakage, offsets or contamination from silicone fill.
- Temperature resistance: Operates effectively in temperatures ranging from -40°F to 257°F (-40°C to 125°C).
- Ingress protection: Offers IP65 or IP67 ratings, depending on the electrical connection, ensuring protection against dust and water ingress.
- Durability: Rated for 50 million pressure cycles, highlighting its long-term reliability.
- Compact and configurable design: Features a compact form factor with a variety of housing and connection material options, allowing for customization to specific application requirements.
- EMI/RFI immunity: High immunity to electromagnetic and radio frequency interference, ensuring signal integrity in electrically noisy environments.
S1 OEM Pressure Transducer Specifications
Materials:
This pressure transducer utilizes an all-Stainless-steel (17-4 PH) sensor element with 304 Stainless-steel process connection and housing as standard, but is also available in options of aluminum, brass, carbon steel or with all 316L Stainless steel if needed
Reference Temperature:
72 °F ±2 °F (21 °C ±1 °C)
Accuracy Class:
±1.0% Span (±0.50% Optional): Includes non-linearity, hysteresis. non-repeatability, zero offset and span setting errors at reference temperature.
Total Error Band (TEB) Accuracy*:
±1.0% of Span: From 0º C to 85 ºC (32 ºF to 185 ºF)
±2.0% of Span: From 85 ºC to 125 ºC (185 ºF to 257 ºF)
±2.0% of Span: From -40 ºC to -20 ºC (-40 ºF to -4 ºF)''
*TEB Accuracy includes the combined effects of non-linearity (Terminal Point Method), hysteresis, non-repeatability, temperature and zero offset and span setting errors.
Stability:
≤ ±0.25% of span/year
Each specification is crafted to reduce maintenance downtime, increase performance consistency, and extend the service life of your equipment.
S1 OEM Pressure Sensor customization and seamless integration
Ashcroft understands that OEM applications often require tailored solutions. That's why we designed the S1 to be highly adaptable with the following configuration options:
- Multiple Output Signals: Including 4-20 mA, 0-5 Vdc, 0-10 Vdc, and ratiometric outputs to match system requirements.
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Diverse Electrical Connections: Options such as Metri-Pack®, Deutsch®, AMP® Econoseal® and M12 connectors facilitate seamless integration.
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Various Process Connections: Standard male and female NPT, SAE and metric threads and custom fittings available to suit different installation needs.
Offering this type of flexibility enables easy integration of the S1 Pressure Sensor into a broad range of systems without the need for extensive modifications.
An OEM Pressure Transducer built on quality and compliance
Ashcroft's dedication to quality is evident in the S1 transducer's certifications and compliance with industry standards, including CE, RoHS, and UL Recognized Component per UL 61010-1, ensuring adherence to safety and environmental regulations. Plus, to ensure manufacturing excellence, this product is assembled in ISO-certified facilities with traceable materials and documented testing.
Ready to learn more
Now that you know what makes the Ashcroft® S1 OEM Pressure Transducer a reliable and economical option for your OEM, you can decide if it’s the best option for your application. For more information on pressure transducers in general, check out some other articles we’ve written:
- What are the Advantages of Ashcroft Pressure Transducers?
- How Does Media Temperature Affect Pressure Transducer Performance?
- How to Protect and Optimize Pressure Transducers on Mobile Hydraulics
- What is CVD Technology and Why is it Important in OEM Applications?
- How Much Do Pressure Transducers Cost? (6 Factors Impacting Price)
Contact us to speak with one of our industry experts and get all your pressure transducer questions answered. In the meantime, download our guide to learn about the mistakes you can make when selecting a pressure sensor for your OEM application.
