Oehler Research · Ballistic Measurement Systems
Oehler System 85
One system covers interior ballistics (chamber pressure) and exterior ballistics (velocity, time of flight, ballistic coefficient).
System 85 is the workhorse of ammunition-industry ballistic laboratories. Two 12-bit ADCs sample two pressure signals together at 5 or 10 microsecond intervals and keep 400 points per channel, enough to rebuild the full pressure-time curve and compute peak pressure, time to peak, rise time and area under the curve automatically. The same shot also yields muzzle velocity, impact position and time of flight, from which the ballistic coefficient follows. A built-in firing simulator lets you configure the system and train staff without live ammunition. Data exports to Excel on its own and goes straight into existing statistics and QC workflows. Oehler restricts the international export of this system, and supply is assessed case by case.
Overview
A ballistic lab usually needs two separate instruments to cover chamber pressure and velocity, then has to match the two data sets afterwards. System 85 puts both on the same shot and the same report. Pressure channel A reads mid-case or case-mouth pressure; channel B reads mid-case, case-mouth or barrel pressure. Both are sampled together at 12-bit resolution, at 5 or 10 microsecond intervals, 400 points per channel. At the same time, muzzle screens and a distant target give velocity, time of flight and ballistic coefficient. Peak pressure, time to peak, rise time and area under the curve are computed by the system, with no manual curve reading. Optional Bessel and Butterworth low-pass filters suppress measurement noise. The unit connects to a Windows computer through a powered USB port, can also measure machine-gun rate of fire, and exports test data to Excel automatically for statistics and QC traceability. The built-in firing simulator runs on its own battery, so configuration and operator training happen without a live shot.
Key specifications
| Measured quantities | Two pressure channels, action time, muzzle velocity, impact position and time of flight, ballistic coefficient |
|---|---|
| Pressure channel A | Mid-case or case-mouth pressure; outputs pressure-time curve, peak pressure, time to peak, rise time, area under curve |
| Pressure channel B | Mid-case, case-mouth or barrel pressure, same analysis as channel A |
| A/D conversion | Two 12-bit ADCs sampling together, 5 or 10 microsecond interval |
| Sample depth | 400 points stored per pressure channel |
| Filtering | Optional Bessel and Butterworth low-pass filters |
| Interface | Windows PC over a powered USB port |
| Other functions | Built-in firing simulator (own battery), machine-gun rate of fire, automatic Excel export |
Features
Two pressure channels sampled together
5 or 10 microsecond intervals and 400 points per channel rebuild the whole pressure-time curve rather than logging only the peak.
Interior and exterior ballistics on one report
Chamber pressure, velocity, time of flight and BC come from the same shot, so there is no matching of two instruments' data afterwards.
Built-in firing simulator
Runs on its own battery, so setup and operator training need no live ammunition, cutting training cost and risk.
Optional low-pass filtering
Bessel and Butterworth filters suppress measurement noise while keeping the curve's shape.
Automatic Excel export
Test data flows into existing statistics and QC processes and supports long-term trend tracking.
Machine-gun rate of fire
Action time and rate of fire for automatic weapons are logged in the same test.
Screens and applications
Pressure curve · PRESSURE
The full pressure-time curve
Peak pressure is only one number. The 400-point record rebuilds the entire curve, and time to peak and rise time are what reveal differences between loads.
Data · DATA
Automatic computation and statistics
Peak, time to peak, rise time and area under curve are computed by the system; shot-by-shot results export to Excel for QC traceability.
Configuration · SETUP
Pressure and velocity in one setup
Pressure channels tap mid-case, case mouth or barrel; the velocity side uses screens and a distant target, so one shot gives interior and exterior data.
Laboratory
Ballistic laboratory
Chamber pressure, velocity and consistency measurement in indoor tunnels and labs, where data must flow straight into statistical analysis and QC reporting.
Options and configuration
System 85 is a system-class product and Oehler restricts its international export. Send us your requirement first; Evencat will obtain a supply assessment and lead time from the factory.
Standard equipment (included)
Options and extensions
Service and support
Downloads
- Product brochureBrochure · PDF
- User manualUser Manual · PDF
- Manufacturer product pageOehler Research · Full specifications
This product is a ballistic measurement system. Oehler restricts its international export and a US export license may be required. Evencat can submit an export assessment to the factory and obtain a supply and lead-time reply. Evencat supplies and quotes Oehler Research, Inc. (Austin, Texas, USA) products in Taiwan, with model selection advice, supply assessment and training.
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