Sensing Technology
Thin Film.
Precision micro-deposited layers on stainless steel diaphragms. The technology of choice for pressure, force, load, weight and torque measurement.
BROWSE BY MEASUREMENT
Explore by Measurement
Force
Miniature load cells and force sensors for OEM integration
Explore load cells
Pressure
OEM sensors for gauge, absolute and differential pressure
Explore pressure sensors
Level
Level sensing through the vessel wall, with no contact with the fluid
Explore level sensors
Bubble
Detect air emboli and bubbles in medical fluid lines
Explore bubble sensorsBROWSE BY SENSING PRINCIPLE
Explore by Technologies
THIN FILM
Thin Film
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.
ULTRASONIC
Ultrasonic
Ultrasonic technology uses high-frequency sound waves — typically above 20 kHz — to detect, measure, and analyze targets without physical contact. SMD's ultrasonic sensors are engineered for demanding medical, industrial, and fluid management applications, offering non-invasive measurement that preserves both the sensing element and the measured medium.
CAPACITIVE
Capacitive
Capacitive sensing technology measures changes in an electrical field caused by the presence, proximity, or movement of a medium. Because there is no mechanical contact with the measured medium, capacitive sensors are inherently resistant to wear and well-suited for detecting liquids, solids, and interfaces in challenging environments.
OPTICAL
Optical
SMD's optical liquid level sensors use infrared light refraction through a polished prism tip to detect the presence or absence of liquid at a precise point. When the prism is dry, total internal reflection returns light to the detector — when wetted, the refractive index changes and the signal drops. The result is a fast, reliable switch with no moving parts, no calibration, and no sensitivity to foam or turbulence.
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Explore by Industry Solutions
INDUSTRY
Medical & Healthcare
Life-critical sensing for infusion, diagnostics, and surgical devices.
INDUSTRY
Semiconductor
Ultra-pure chemical delivery, wet process, and bubble detection.
INDUSTRY
Aerospace & Defense
Fuel systems, structural load, and harsh-environment sensing.
INDUSTRY
Industrial & Automation
Equipment OEMs, fluid handling, robotics, and process control.
INDUSTRY
Bioprocess & Pharma
Single-use systems, media handling, and sterile sensing.
INDUSTRY
Energy & Nuclear
Downhole drilling, subsea, and harsh-environment sensing.
PRECISION OEM SENSING
Engineered for the applications where failure is not an option
SMD Sensors designs and manufactures precision sensing solutions for medical devices, industrial automation, and life-critical equipment. Our OEM sensors are built to perform in environments where accuracy, reliability, and longevity are not negotiable.
From thin film pressure sensors rated to ±0.1% accuracy, to clamp-on ultrasonic flow and bubble detection sensors — every product is engineered, calibrated, and tested to exacting OEM specifications.
±0.1%
ACCURACY
30+
YEARS OEM
100+
APPLICATIONS
Knowledge Base
Latest Technical Resources
What is a Load Cell? Clarifying the Terminology
Force sensor vs. load cell vs. strain gauge — understand the differences before specifying your next design.
Understanding Strain Gauges in Load Cells
Thin Film vs. Bonded Foil vs. Silicon — a deep dive into the pros and cons of each technology for OEM applications.
Noninvasive Pressure Measurement with Thin-Film Sensors
Critical fluid management in medical applications requires precise, repeatable, non-contact pressure sensing.
Contact Us
Request a Quote or
Talk to an Engineer
90% of our products are custom-engineered. Tell us about your OEM application and our engineering team will develop the right sensor solution — with short lead times and competitive pricing.
Phone (USA)
+1 (203) 481-6777
Manufacturing Locations
Milford, Connecticut, USA
Basingstoke, Hampshire, UK