Miniaturized Pressure Sensors for Engine Endurance Test Benches from DDM Sensors

Modern engine endurance test benches operate under extreme conditions – high temperatures, severe vibrations and millions of load cycles place the highest demands on every component installed. Pressure sensors in particular must not only measure precisely, but also function reliably over long periods. DDM Sensors offers specially developed, miniaturised pressure sensors that meet precisely these requirements.

Precision and Reliability for Demanding Endurance Tests

The extreme conditions and high cycle counts in engine endurance test benches represent a unique challenge. The solution lies in robust, miniaturized pressure sensors from DDM Sensors, which offer high accuracy, long-term stability, and a compact design. The Total Error Band of these sensors accounts for factors such as non-linearity, hysteresis, zero-point and full-scale offset tolerances, as well as the effects of temperature on zero-point and span.

Our Pressure Sensor Series for Engine Endurance Test Benches

Maximum Long-Term Stability for Reliable Results in Engine Endurance Test Benches

Pressure sensors from DDM Sensors feature long-term stability of +/- 0.1% FS / year, making them perfect for use in engine endurance test benches. Through factory calibration and, if necessary, adjustment, we guarantee consistent and reproducible data throughout the entire test duration.

Application Areas and Measurable Variables in the Engine Test Bench

DDM Sensors’ pressure sensors are used in various applications within the engine test bench. The measurable parameters include.

• Oil pressure monitoring

• Fuel pressure measurement in the high- and low-pressure ranges

• Boost pressure control

• Measurement of coolant and exhaust back pressure.Erfassung des Kühlmittel- und des Abgasgegendrucks. 

DDM Sensors Pressure Sensors in Detail

Technical characteristics of DDM Sensors pressure sensors developed for test bench applications:

Engineered for Extreme Test Bench Environments

DDM Sensors pressure sensors are specifically designed for extreme test bench environments. Our miniaturized design allows for easy integration into restricted spaces. High thermal resistance ensures reliability at high ambient temperatures, while continuous vibration resistance makes them suitable for high shock and vibration loads. Furthermore, our high measuring accuracy allows for the precise detection of dynamic pressure curves.

Technical Specifications at a Glance

Feature	PV25 / PX25	PV22 / PX22	PV15	PV10
Applications	High-precision measurements; standard applications with ample space.	Applications with wide temperature range (-40 to 125 °C, opt. 150 °C).	Miniaturized sensors for small installation spaces.	Ultra-miniaturized for smallest spaces and high temperatures.
Measuring Ranges	Gauge: 100 mbar to 150 bar; Absolute: 250 mbar to 150 bar.	Gauge: 100 mbar to 150 bar; Absolute: 1 to 150 bar.	Gauge/Abs: 2.5 to 150 bar (PV-15B up to 200 bar gauge).	5 to 250 bar.
Accuracy Class (Total Error)	Standard ≤ ± 1.0% FS; optional up to ≤ 0.1%.	Standard ≤ 1.0% FS; optional up to ≤ 0.25%.	Standard ≤ 1.0% FS; optional up to ≤ 0.25%.	Standard ≤ 1.5% FS; optional up to ≤ 0.50%.
Operating Temp.	-20 °C to +80 °C.	-40 °C to +125 °C; opt. to +150 °C (H-series).	-40 °C to +125 °C; opt. to +150 °C (H/B-series).	-40 °C to +150 °C; opt. to +180 °C.
Long-term Stability	≤ 0.1% FS / year.	≤ 0.1% to 0.2% FS / year.	≤ 0.1% to 0.2% FS / year.	≤ 0.5% FS / year.
Vibration Resist.	DIN EN 60068-2-64 severity level 1.	DIN EN 60068-2-64 severity level 1.	DIN EN 60068-2-64 severity level 1.	DIN EN 60068-2-64 severity level 1.
Materials (wetted)	Stainless steel 1.4404 and 1.4435.	Stainless steel 1.4404 and 1.4435.	Stainless steel 1.4404 and 1.4435.	Stainless steel 1.4404 and 1.4435.
Protection (IP)	IP67 (cable) or IP65 (DIN connector).	IP67 (H-series / TEDS) or connector dependent.	IP67 (HT cable).	IP67 (HT cable).

Easy Installation and Integration

Simple installation and integration into existing systems are ensured by standardized mechanical process connections—such as G1/4″ (int/ext) for the PV25/PX25 series, various M10x1 variants, M14x1.5, 7/16-20 UNF, or Rectus 21 quick-connects for the PV22/PX22 series, and miniaturized M5, M6, and M8 threads for the PV10 and PV15 models—combined with compact dimensions for flexible positioning. Various electrical connection options, such as connectors or cables, are also available.

Custom Solutions for Engine Endurance Test Benches

Custom solutions are available for specific requirements in engine endurance test benches. These include the adaptation of measuring ranges and pressure connections, the implementation of customer-specific electrical interfaces, and the use of compatible materials for contact with specific media.

Lead Times and Availability

Common models are usually available directly from stock, allowing for short lead times. Detailed information on standard lead times for all products is available upon request.

Consult Our Experts for Engine Test Bench Pressure Sensors

For detailed technical advice or a non-binding offer, you can contact our experts for test bench applications directly.