Download the Zero Speed Switches Spec Sheet:
- Frequency range from zero speed to 25 kHz
- Air Gap: Gear target: 1" (25 mm) (target mass and velocity variables influence distance)
- Vibration and shock resistant construction;
- Temperature Range: -40 to 150° C (-40 to 300° F)
- Available in most popular thread and smooth shell sizes:
- Power input 6 - 36Vdc
- Standard shell: 303 Stainless Steel.
Available specialized zero speed switches: Intrinsically Safe; dual output; additional output for temperature; sanitary and hermetically-sealed; high temperature and cryogenic sensors; additional output protection: Short circuit, reverse voltage, moderate lightning and 60V load dump
Zero Speed Switches Applications
The Hall effect technology fulfills a wide array of applications due to a zero speed switch's ability to detect zero speed or direction change of ferrous targets and produce a digital output read by computers, motion control devices, and position monitors. Zero speed switches are used in many industrial applications to determine gear or shaft rotational speed by detecting changes in the magnetic field and our quadrature switch is used to detect direction.
Standard output (NPN) is provided by a 2.2 K ohm internal resistor to a collector which can sink 25mA. In addition, PNP and open collector types are available in order to serve all logic needs. The HF zero speed Hall effect sensor is used in speed applications and digital devices which switch from logic state 0 to logic 1 in the presence of a magnetic field of 5 - 10 gauss.
Gear Tooth Zero Speed Switch Operation
The Gear tooth zero speed switches are designed with an internal magnet to switch in the presence of ferrous targets such as blade tips and gear teeth down to absolute zero speed. The gear-tooth zero speed sensor detects changes in the magnetic field and can also be configured to detect either the presence or absence of a ferro-magnetic target.
The Hall effect speed switch detects a ferrous target while applying zero drag on the target wheel with a sensitivity that detects gear teeth as small as 0.10" wide and 0.10" deep with an air gap of up to 1/8 inch depending on mass of target (gear size).