Zero Speed Switches by Thunderbird International Corp::
- H type zero speed switch is activated by a magnetic target
- HF type zero speed switch is biased by an internal magnetic to be triggered by a gear tooth or ferrous target, and
- Intrinsically Safe type zero speed switches.
The Hall effect technology fulfills a wide array of applications due to a zero speed switch's ability to detect zero speed and direction change combined with a digital output. These zero speed switches are used to determine gear or shaft speed or direction by detecting changes in the magnetic field.
Zero Speed Switches - Magnet Triggered
Our H type Hall effect speed switches are designed to switch in the presence of a m50 Gauss minimum magnetic field. Thhunderbird International Corp's zero speed switch meets a wide array of applications due to its ability to detect the difference in a magnet's south or north pole disposition. Both uni-polar (activated by either N or S pole magnets), bi-polar (alternating N - S pole activation), and an omni-polar model is available which switches for both a N or S pole field shift, converting it to a digital output.
Zero Speed Switches - Gear Tooth & Ferrous Targets
Our HF type zero speed switches are engineered to detect and switch down to absolute zero speed in the presence of ferrous turbine and gear tooth targets. The gear tooth zero speed switch detects fluctuations in the magnetic field and can be configured to detect either the presence or absence of a ferro-magnetic target.
The HF type zero speed switch has the ability to detect a ferrous target while applying zero drag on the target wheel. This speed switch has the sensitivity to detects gear teeth as small as 0.10" wide and 0.10" deep. Depending on mass of target (size of gear), air gaps of up to 1/8 inch are possible.
Our variety of Hall effect zero speed switches include intrinsically safe, single output, dual output, hermetically sealed, and sanitary variations. The H and HF zero speed Hall effect switches are used in digital devices and speed applications which switch from logic state 0 to logic 1 in the presence of a magnetic field of 50 gauss and 5 - 10 gauss.