Multi Channel Box. More Channels. Higher Resolution. Improved Ergonomics.

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Harriet Hines
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1 Multi Channel Box. More Channels. Higher Resolution. Improved Ergonomics.

2 Multi Channel Box SPP Features: 1-4 sensor input channels (portable system) Real-time calculation of valve motion and valve rotation Data conversion 1 MHz, 16 Bit, position resolution 0.25 µm for a valve lift of 16 mm Output of the motion as voltage 0-10 V, ±10 V Analog output 1 MHz, 16 Bit Precision amplifier, 4 steps Offset, amplitude and phase adjustment Adjustment of each sensor is separately storable Display of sensor raw signals at BNC output USB interface (virtual COM interface) Open command language for device control Windows user interface Stand-alone measurement mode Housing system 1 : Robust aluminium housing Earthed housing Optionally with shield-ground separation Separate earth connector at housing 1 19 Systems for VTM-System with 4 channels or more 2 More channels available on request Scheduled options: Capable of being extended up to 32 measurement channels Encoder input for ratiometric position / angle output Digital inputs / outputs, controllable via USB Internal signal encoder Special software functions Customer-specific functions possible Applications: Measurement of valve lift and valve rotation in fired combustion engines Measurement of rotating or linear motion Item description: SPP-3001 Signal Processing Supported sensors: GLM711 AVA-UA - 1 mm GLM713 ASB-Ax - 3 mm GLM711 AVB-UA - 1 mm GLM714 ASB-Ax - (m0.3) 0.94 mm GLM711 ASB-Ax - 1 mm GLM715 ASB-Ax - (m0.4) 1.57 mm GLM712 ASB-Ax - 2 mm Part number 2 : Valve train measurement system 1 channel Valve train measurement system 2 channels Valve train measurement system 4 channels Valve train measurement system 4 channels, 19 2HE Block Wiring Diagram SPP-3001.

Multi Channel Box. Up to 32 Measuring Channels. Sensitec offers a completely new evaluation unit for the valve train measurement system (VTM-System).

implemented. The new unit (SPP-3001) is extendable up to 32 measurement channels, provides a higher resolution and offers better measurement comfort.

The system also now supports some additional sensors from Sensitec. Portable system Real-Time Valve Train Measurement.

The valve position is detected within 1 µm and the value is given in real time as analog voltage. The system provides a reliable measurement of rapid valve motion.

Depending on the number of channels different housing systems are available. This simplifies the mechanical integration into the existing environment.

3 Multi Channel Box. Up to 32 Measuring Channels. Sensitec offers a completely new evaluation unit for the valve train measurement system (VTM-System). All the experience acquired with the successful 1-channel system has made a contribution to the development of this new device and many customer requirements are now implemented. The new unit (SPP-3001) is extendable up to 32 measurement channels, provides a higher resolution and offers better measurement comfort. The existing user interface has been completely revised and updated: A new look, extended features and more measurement functions are available. The system also now supports some additional sensors from Sensitec. Portable system Real-Time Valve Train Measurement. Compared to the previous model the SPP-3001 provides a considerably higher sampling frequency (1 MHz). The valve position is detected within 1 µm and the value is given in real time as analog voltage. The system provides a reliable measurement of rapid valve motion. The maximum lifting movement has been extended and the functionality to measure the valve rotation is completely integrated. Depending on the number of channels different housing systems are available. This simplifies the mechanical integration into the existing environment. Valve spring Valve stem How does the Measurement work? Sensitec Sensor highly integrated. Sensor module The measurement is based on a GMR sensor with a bias magnet which scans a ferromagnetic measurement structure machined into the valve stem. The measurement principle an also be applied for non-magnetic material, even though this requires some additional modifications. Since the sensor is very precise and exhibits negligible hysteresis the measurement accuracy is < 10 µm. Valve guide

4 Valve Train Measurement in Fired Engines. The VTM-System (Valve Train Measurement System) from Sensitec has been developed for the precise length measurement at difficult measuring sites such as the valve train measurement in fired combustion engines. With the development of the new VTM valve train measurement system the modern GMR sensor technology combined with a powerful evaluation electronics is able to solve a highly complex measurement task by means of a surprisingly simple and effective measurement solution. Initially the VTM-System has been developed for a direct measurement at the valve shaft. Nevertheless, it is no problem to use it for other applications, especially when precise measurement is required in small envelopes or under extreme conditions. Since the valve stem is precisely made it is ideally suited as measurement scale. The subsequently applied mechanical structure has no impact on normal valve operation. Valves are normally made of ferromagnetic material. Non-magnetic variants (e. g. titanium) can also be used as measurement scales, however, this requires some additional modifications. We would be glad to advise you on this. We offer even more... After a principal evaluation and definition of the points of measurement we offer different service packages for the integration of the sensors. These may vary depending on the specific measurement task. Service package I Advice regarding the design of the modification of the cylinder head. Service package II Mechanical machining of the valve guide (valve guides are provided by the customer). Service package III Mechancal machining of the cylinder head (normally done by the customer). Service package IV Integration of the sensors into the cylinder head at our plant in Lahnau. Service package V Processing of the valves for the measurement task.

Configuration & calibration VTM-System with installed measurement

evaluation Analog output with calculated valve lift curve in real

Fast realization of measurement projects by our experts.

They are extremely small and very robust under demanding operating

A very modern and intelligent evaluation electronics transfers the

results. Excellent performance very good price.

the most demanding measurement tasks around fired combustion

The solution offered by Sensitec provides first-class results and

5 Configuration & calibration VTM-System with installed measurement valves Measuring data acquisition of customer SPP-3001 sensor evaluation Analog output with calculated valve lift curve in real time Your Advantages. Fast realization of measurement projects by our experts. We are very experienced in the integration of sensors in difficult measurement environments. Each project is a new challenge and we are happy find a solution for this. Robust sensor technology. Our magnetic sensors are the key to success. They are extremely small and very robust under demanding operating conditions. Safe measurement results. A very modern and intelligent evaluation electronics transfers the magnetic effect of our sensors into precise real-time measurement results. Excellent performance very good price. Valve train measurement or valve rotation measurement belongs to the most demanding measurement tasks around fired combustion engines. The solution offered by Sensitec provides first-class results and has established itself also for reasons of cost a standard method for many engine design engineers working on the measurement in fired engines. Modular services. We offer you individual service packages for the sensor integration. You decide which tasks you will carry out on your own. We provide reliable service and advice any time.

6 Sensitec GmbH Georg-Ohm-Str Lahnau Germany Phone: Fax: May 2018 / Subject to technical changes. Source: Egorov Artem / shutterstock.com

VTMS. Valve Train Measurement Solution. Data sheet

VTMS. Valve Train Measurement Solution. Data sheet The measurement solution includes a GMR, an amplifier and a processing unit, which can be controlled by a PC (via USB interface). The head GLM711AVx is intended for the use with passive scales with a pitch