 |
Tractor front wheel drive sensor
- A well known manufacturer of agricultural machinery required a robust sensor for switching off the front wheel drive of a tractor when the wheels turned beyond a certain angle.
- Our magnetic switch design went through weeks of severe field testing before being accepted.
- The system involves a stainless steel assembly mounted to the steering tubes and a magnetic sensing system which is protected inside the chasis.
|
 |
Level sensor with proportional output
- A proportional output was required from a magnetic float in a marine application.
- We developed an array of reed switches which, in combination with several resistors, gave a 20 step output for a pump’s control system.
- The unit is manufactured from plastics and copper-nickel to reduce corrosion.
|
 |
Short magnetic switch with right angle cable exit
- A company required a magnetic switch for a tie-rod pneumatic cylinder which should be less than 22m long, have a right angled cable exit and an NPN output.
- By machining and reassembling parts of our existing magnetic switch housings we were able to supply a batch of 50 magnetic switches to the above specification within a few days. The switches were supplied with our 2 wire sensor so they could be used for any system, not just NPN.
|
 |
Magnetic switch interlock for CNC machines
- A simple magnetic switch interlock device was required for CNC machine operator identification.
- We designed a magnetic switch which is fitted into a hole drilled through the panel and connected to the existing electrical interlock system of a CNC machine.
- We supply a set of magnetic ‘keys’ with identifying key fobs to be issued to the operators.
- To use the machine the operator must insert his or her magnetic key so if they leave the machine running unattended their key will identify them.
|
 |
Water inlet blockage detectors for boats
- The cooling water inlet through a boat’s hull can becomes blocked or the seacock can be accidentally left closed, leading to overheating and possibly the destruction of the engine.
- We developed a corrosion resistant water inlet sensor using a reed switch sensor. It detects the ‘negative pressure’ that occurs in the water cooling system when there is a blockage.
- The sensor gives an output at a pre-set negative pressure to signal a blockage which can then be used to sound an alarm and alert the operator.
|
 |
Latching changeover switch for detecting a passing elevator cabin
- A replacement was required for a specialised latching changeover magnetic switch which was originally purchased from a Spanish company and is no longer available.
- We were sent an old magnetic switch which was borrowed from an elevator unit so we could determine the operating characteristics. After a few tests on the old switch we were able to supply a replacement which was much neater and easier to fit than the original.
|
 |
Contactless angle sensor for vehicle handbrake system
- We developed a contactless angle sensor with a variable output which combined with the non-linear movement of the handbrake to give a linear electronic output.
- By using an electronic magnetic sensor and powerful magnets we created a unit with no moving electrical parts thus eliminating wear.
|
