This application story explores the use of high-precision digital instrumentation to validate robotic surgery manufacturing equipment through rigorous Gage Repeatability and Reproducibility (Gage R&R) testing.
- Application: Benchmarking medical device leak testers against a high-accuracy reference standard.
- Precision: Utilizing 0.1% Full Scale Output (FSO) accuracy to ensure measurement consistency.
- Data Strategy: Leveraging integrated data logging and USB interfaces for seamless PC-based statistical analysis.
- Adaptability: Implementing modular sensor designs and versatile mechanical adapters for diverse testing stations.
To ensure the reliability of miniaturized robotic surgery instrumentation, a specialized medical technology developer required a high-precision reference standard to perform a comprehensive Gage R&R study on their internal leak testing equipment. The primary objective was to validate the consistency and repeatability of their existing leak testers by comparing them against a significantly more accurate measurement device. The application demanded a 300 mbar gauge pressure range, necessitating a solution capable of maintaining extreme precision at relatively low pressures. Given the sensitive nature of robotic surgical components, the reference gauge needed to provide not only a live readout for immediate verification but also a robust method for capturing high-resolution data points to support deep statistical analysis of measurement drift and variance.
The solution centered on the implementation of the DL 01 series, a precision digital gauge specifically engineered for leak testing and pipeline monitoring. This instrument features a modular sensor concept and a high-resolution graphic display capable of visualizing pressure decrease over user-adjustable time intervals, which is critical for identifying minute leaks in surgical assemblies. With an accuracy class of 0.1% FSO, the device provides the necessary resolution to act as a gold-standard reference against the production-line equipment. To facilitate the Gage R&R data collection, the integrated data logger—capable of recording up to 600,798 values—was utilized alongside a USB 2.0 interface and dedicated configuration software. This allowed the engineering team to capture entire pressure curves during R&R trials at measurement rates of up to 50 samples per second, ensuring that even transient pressure fluctuations were documented.
The hardware configuration included a stainless steel 1.4404 housing and an FKM-sealed sensor to ensure long-term stability and resistance to laboratory environments. For mechanical integration, the gauge was fitted with a 1/4″ NPT male connector, allowing it to interface seamlessly with the existing pneumatic ports of the leak test stations. The battery-powered, self-contained nature of the DL 01 series, boasting a battery life of over 2,000 hours in standard use, provided the portability required to move the reference standard between multiple test benches without the need for external power supplies or complex wiring. This combination of laboratory-grade accuracy and industrial durability enabled the manufacturer to finalize their equipment validation with a high degree of confidence in the underlying measurement data.
DL01 High Precision Digital Pressure Gauge with Integrated Datalogger for Leak Testing
- Part No: DL01-A21 / M0P-4000-0-1-N40-1-000 / ZUSBCD02
- Position 1: Digital pressure gauge DL 01 with communication interface
- Position 2: Transmitter for DL 01
- Pressure Type: Gauge pressure
- Pressure Range: 0 … 400 mbar
- Accuracy: 0.1% FSO
- Mechanical Connection: 1/4″ NPT male
- Seal: FKM
- Special Version: Standard
- Accessory 1: USB converter including DAQ software for data logging and PC interface