■ A power-generating rotation pickup sensor made up from a magnet and a coil.
■ The sensor is mounted close to the detection gear (a rotating body), and an electrical signal can be obtained with a frequency proportional to the rotational speed.
This sensor is a power-generating rotational pickup sensor comprised of a magnet and a coil.
By mounting the sensor close to the magnetic detection gear, which is mainly installed on the rotation axis (of the rotating body), an electrical signal can be obtained which has a frequency proportional to the rotational speed.
When the signal white line is taken as 0V, a plus voltage is generated and output when the magnetic body comes close to the tip of the sensor, but a minus voltage when moving away from it.
| Model | GM12 |
|---|---|
| Name | Rotation pickup sensor |
| DC resistance | Approx. 2.2kΩ |
| Detection gear (rotating body) | Module 1 to 3 (module = pitch circular diameter / number of gears) Material Magnet material (e.g. S45C, SS400) Width of gear teeth 3mm or more |
| Output voltage | f=1kHz For the module = 1 condition (GAP = space between the tip of the sensor and the rotating body) 2.0Vp-p (GAP=0.5mm Load resistance=10kΩ) (TYP) 0.5Vp-p (GAP=1.0mm Load resistance=10kΩ) (TYP) 2.4Vp-p (GAP=0.5mm Load resistance=∞Ω) (TYP) 0.6Vp-p (GAP=1.0mm Load resistance=∞Ω) (TYP) |
| Signal cable | Sheath PVC Approx. φ5 Balanced shield cable 2m Red (+), White (-) |
| Magnet polarity | Tip N pole |
| Polarity of output power generated | When the magnetic body approaches the tip, the (+) signal line is a + polarity |
| Operating temperature range | -10 to +100ºC |
| External dimensions | M12(P=1) L:46 |
| Weight | Approx. 95g (including the cable) |
| Accessories | 2 nuts (M12 B17 H3 P1 double-chamfered), 1 toothed washer |
