Strain Measurement Devices
Four Core Technologies.
Thousands of Applications.
SMD Sensors builds precision measurement products across four fundamental sensing technologies — Thin Film, Ultrasonic, Capacitive, and Optical. Each technology is matched to the demands of the application, from sub-micron force sensing to non-invasive bubble detection.
Technology Overview
Select a technology to explore
THIN FILMThin Film
Precision at the microscale
Thin film technology involves depositing ultra-thin layers of conductive or resistive material onto a substrate to create highly accurate sensing elements. This manufacturing process enables exceptional repeatability, low hysteresis, and superior temperature stability — ideal for demanding measurement environments.
Key Benefits
- Extremely stable output over temperature ranges
- Low hysteresis and drift
- Miniaturizable for space-constrained designs
- Excellent long-term repeatability
- Compatible with harsh media and environments
Thin Film Products
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Technology Comparison
Not sure which technology fits?
Use this reference to understand the key differences across SMD's four core sensing platforms.
| Criterion | Thin Film | Ultrasonic | Capacitive | Optical |
|---|---|---|---|---|
| Contact with Fluid | Direct | None (clamp-on) | None (through wall) | Prism tip contact |
| Primary Measurement | Pressure, Force, Weight, Torque | Flow, Bubbles, Level | Level (continuous & point) | Point level detection |
| Media Compatibility | Wide range of media | Any liquid or slurry | Non-conductive preferred | Water & aqueous solutions |
| Temperature Range | Very wide (−40°C to +150°C+) | Standard to extended | Wide | Standard (0°C to +85°C) |
| Ideal Applications | OEM embedded sensing | Medical fluid management | Tank & vessel level monitoring | Reservoir & cartridge level |
Need help selecting the right technology?
Our application engineers work directly with your team to match the best sensing technology to your measurement requirements, environment, and integration constraints.