| direct measurements | stress, temperature, magnetic field |
| indirect measurements | bend, torque, pull, strain, position, flow, vibration, humidity |
| operating temperature range | –273 to 600°C |
| temperature measurement accuracy | 0.01°C |
| sensor diameter | 3–70 µm |
| - metallic alloy nucleus diameter | 1–50 µm |
| - glass coating diameter | 2–20 µm |
| sensor length | 1cm-4cm |
| frequency of sensing coil | up to 50.000 times per second |
| frequency of exciting coil | from DC up to 20 kHz (audiofreq.) |
| Long term survival | 1000+ years |
| sensor permeability | ~ 1 (like vacuum) |
| sensor saturation field | cca. 3 Oe. |
| operating pressure limit | none |
| corrosion to alkaline and acidic environments | none |
| contactless sensing | up to 10 cm distance |
| low power consumption | mA on one single measurement |
Power Consumption
mA on one single measurement Sensor is passive, power wired is only the sensing device (set of coils) Sensor is glass coated – provide protection from aggressive (acidic/alkaline) environment Sensor provides biocompatibility – no affecting X-ray or MRI
Sensor input and output
Input: temperature, pressure and magnetic field and other physical attributes we can convert to: position, el. current, humidity Output: is always digital, its data (AD converted)
How to collect signal
Sensor is magnetic, so we collect signal by magnetic induction. In the end its magnetic response of the wire to our sensing device.