October 2009

Hall-Effect ASIC’s are available from a range of different suppliers worldwide. Most of them have been developed for a specific automotive application for which the chip is produced until this use is modified or disappears. Applications that use the element are in this case also subject to modification. This often leads into expensive tests and heavy re-qualification work.

JAQUET AG decided therefore to design its own Hall-Effect-ASIC for the use in speed sensors. This element is now available. It is especially designed and optimized for hydraulic motors and pumps and is ideally suited to be designed into advanced solutions for the detection of speed, sense of direction and position of such elements. Even a combination with temperature detection in the same sensor is possible.

As a result you will get a small but powerful device for your motor or hydraulic pump that combines excellent performances with a great reliability. With a stainless steel housing that is specially adapted to the needs of your specific mechanical environment this is the low-cost device that you have looked for to equip your product and make it even more valuable for your customers. 

July 2009

On a street sweeping machine installed on a truck chassis the actual sweeping device is driven by a hydraulic motor. The cleaning result depends from the correct speed of this hydraulic motor. On the other hand the delivered hydraulic power, which is generated by the main engine of the truck, depends from the throttle position. It is the duty of the driver to keep the speed of the sweeper in the right band.  To assist him in doing so, a simple speed measuring chain built form a speed sensor installed in the hydraulic motor and an indicator on the dash-board delivers the required information. The speed sensor used in this application is a single channel hall effect unit with a thread dimension of M12x1 mm.

June 2009

Sensor technology is always also a packaging question. The sensing elements and the electronics to condition the delicate raw signals are often exposed to harsh environment. Among temperature and vibration also water tightness and robustness against chemicals are important. Specifically in certain hydraulic applications the sensor is additionally also exposed to high pressure of the hydraulic fluids. This can easily reach values up to 300 bar or higher. Sensor housings of JAQUET’s speed sensors are designed to withstand all of this. Stainless steel based, blind front ends and consistent sealing concepts are combined with easy to assemble push in and bolt type housings.

May 2009

JAQUET TECHNOLOGY GROUP is a global engineering and manufacturing company, specialized in providing speed sensors and complete system solutions in demanding ambient conditions. Our DSY sensor line was specially designed for hydraulic applications. With 2 channels it allows to sense speed and sense of rotation at the same time.

The signal created by the chopped Hall Effect sensor element in the DSY can be used in two different ways. First, the sensor output is a frequency signal on channel A and a 90° phase shifted frequency signal on channel B. This quadrature signal then can be used in the central computing unit to determine a sense of rotation.

Alternatively, the built in signal treatment in the sensor can conduct this step. The signal output of the DSY then consists of a frequency signal on channel A and a high/low level indicator for sense of rotation on channel B.

Either way, the DSY sensor can be executed as a 12 mm diameter flange or thread housing. This makes the DSY the smallest 2 channel sensor on the market, which allows it to operate at very high pressures due to its small contact surface. Moreover, the flange connection makes it easy to assemble the sensor because the orientation of the hall element is fixed.

April 2009

From hydro electric power stations high in the Pyrenees to nuclear submarines at the bottom of the ocean, JAQUET tachometer products are in service providing optimum solutions for measurement, control and that all important machine protection function.

The T400 series are single channel tachometers that are available with or without display. With a frequency input compatible with almost all speed sensors, an analog and a frequency output (Open Collector) and a built in relay, it can cover all fundamental functions you would expect from a tachometer. This includes: converting absolute speed into an analog signal, monitoring speed and over-speed protection with programmable levels.

Together with a DSY hydraulic sensor however, the T400 can do even more than that. Where a speed and direction signal is required, JAQUET’s DSY series sensors may be used in conjunction with a T401 and a T420. The sensor supply must be wired through the T420 in this case, while the sensor monitoring of the T401 must be turned off. The output of the T420 can either be used as potential free relay contacts or can be connected to the mains potential. Additionally it is still possible to get a limit function from the T401, which would then use the relay sitting in this unit.

March 2009

Although JAQUET has accrued over 100 years of experience and over 2500 documented solutions, there are always new challenges in this business. We can offer a wide selection of standardized, modular and uniquely customized products, but would be more than happy to find a flexible, individual solution to your specific need. We do that, irrespective of whether you need just one piece or thousands of parts per year.

Being a supplier for the automotive industry, we are used to dealing with large quantities. In our three production lines, we can produce 3000 sensors per day in up to 3 shifts. Automatic inline testing stations ensure that you not only get the right quantity but also the quality that you expect from a JAQUET product.

Since we do most of the manufacturing of our sensors in house, we developed a profound understanding of our manufacturing processes, such as injection moulding, machining and welding. This knowledge gives us the capability and flexibility we need, to produce prototypes, small sets of highly customized products and also large series of mass produced sensors in reasonable time.

February 2009

JAQUET TECHNOLOGY GROUP offers the world’s most versatile and advanced range of solutions for the detection, measurement, diagnosis and management of rotational speed. Our industry and application specific expertise ensures that you will achieve an optimum solution.

In order to satisfy our customers in all the industries we serve, quality management is one of our main focuses. Reliable business processes and consistent high quality services are essential everywhere, but especially in the automotive world. Thus, the International Automobile Task Force (IATF) established a worldwide standard, guaranteeing that suppliers meet the rigorous quality requirements, the automotive industry demands. JAQUET TECHNOLOGY GROUP is proud to be certified by the new automotive QM standard ISO/TS 16949.

Though the ISO/TS 16949 is based on automotive industry guidelines and reflects these demanding specifications, it goes one step further. The process-oriented approach of the audition ensures that the quality of all important business processes is high.

For you this means that you not only can be sure that we’ll provide all the certificates your customer might demand. Furthermore, it shows our efforts to design all of our processes to achieve the highest possible level of customer satisfaction.

January 2009

Turbulent times require unconventional measures. Naturally we wish you success in your business, but today that alone is not enough. We want to take a step further and make a concrete offer to support you in your daily exercise of cutting costs. Should you require speed sensors for your application we have the better solution for you. Lowering the total costs for our customers has always been JAQUET’s strongest argument. And that is even more important these days.

As a supplier we are financially solid, privately owned and since we have been in business for 119 years and thus survived also the 1930’s you not need to be concerned about your future deliveries of parts. We have at least some experiences how to survive difficult times. With some short eMail Newsletters about the latest developments and application examples for the hydraulic industry we want to give you ideas and keep the communication with you fluent. Tease us with your technical and cost saving targets – we look forward to talking with you about solutions.