SAW Technology

Benefits

Benefits of SAW Technology

Measure moving components
Measures torque, thrust, pressure and temperature on rotating or moving components.
No wear and tear
Non-contact offers long mechanical life and are maintenance free as they don’t use parts which will wear and tear.
Wireless
There are no wires or slip rings between the sensor and electronics.
Passive
No electrical power is applied to or generated by the sensor, the energy exciting the SAW sensor is provided by the interrogating RF pulse.
Cost effective
A typical Transense SAW sensor is an intrinsically a low cost device. It contains no electronic components.
Low Mass
A typical SAW sensor weighs less than 1 gram. This is very beneficial in motorsport applications where every gram counts.
Small Size
Enables the addition of one or two sensing elements to existing components such as shafts or disks with only minimal intrusion or modification.
Integration
Existing customer components can be instrumented.
No special materials are required
Unlike other technologies the SAW torque sensor can be mounted on any type of steel even other types of metal.
Insensitive to Magnetic Fields
Many automotive applications require torque sensing close to electric motors and solenoids. This is problematic for some other types of sensor technology.
Mechanically Rugged
SAW sensors have demonstrated considerable tolerance to high shock loads, high speed centripetal forces, vibration and chemical resistance.
Good Dynamics
High sample rate of 2 kHz enabling for example, torque measurement in engines and powertrains every few degrees of shaft or disk rotation (eg. every 3 degrees at 1000 rpm).
Good Measurement Accuracy
SAW torque sensors can deliver better than 1% of full scale accuracy over the temperature range -40°C to +150°C together with low hysteresis and drift.