Measurement Hardware 

Sensors, signal conditioning, RASdelta measurement system (DAQ) including measurement boards for all relevant applications in the development and optimization of modern, efficient, and reliable powertrains: ROTEC measurement products enable users to seamlessly integrate a measurement chain from speed sensor to DAQ with an efficient measurement solution.

Experience the performance of our products firsthand and schedule a personalized consultation appointment. 

 

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Sensors

The magneto-resistive differential sensors from ROTEC are used for detecting rotational speeds on ferromagnetic gears and are available in various designs to suit the most demanding installation situations

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TYPE A

  • Two-part design - the preferred direction can be adjusted after sensor installation
  • Suitable for standard temperature range -15°C to 100°C
  • Optional with direction recognition (4-fold sensor)

 


 

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TYPE B

  • Short sensor length
  • Standard temperature sensor (temperature range -15°C to 100°C) with detachable connection cable
  • High-temperature sensor (temperature range -15°C to 160°C) with integrated cable, including adapter cable

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TYPE C

  • Angled 90° sensor head
  • Standard temperature sensor (temperature range -15°C to 100°C) with detachable connection cable
  • High-temperature sensor (temperature range -15°C to 160°C) with integrated cable, including adapter cable

The ROTEC laser sensors are used for detecting rotational speeds by scanning a black-and-white (zebra) pattern. Both stripe tapes and stripe discs can be used. The stripe patterns are available in various standards. Handling of the butt joint when using stripe tapes is easily achievable through a correction mechanism in the RAS software.

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Laser sensor (SeLas 4/5)

  • Scanning of the object from the front or via a deflecting mirror at a 90° angle possible
  • Fiber optic cables available with textile or metal sheathing

 

 


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Zebra targets

  • High-quality stripe patterns improve the quality of the speed signal
  • Stripe tapes and stripe discs available in different standard dimensions
  • Customized stripe patterns available upon request

The Sensitec sensor GLM711AVB is intended for the use with passive scales with a pitch of 1 mm. A bias magnet for the necessary magnetic fi eld and the sensor element is combined in a very small housing. The integration supports an optimal adjustment between sensor and magnet which helps to generate a very high quality of sensor signals.

Together with a ferromagnetic tooth structure, the sensor delivers two 90 degree phase shifted analog signals (sine and cosine).

The typical application area of the sensor is the measurement of valve lift curves during engine operation. Measurement of valve rotation is also possible.

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Electronics

The differential sensor adapter (DSA) converts the sinusoidal signal of the ROTEC magnetic sensor into a pulse sequence of needle pulses with TTL level, which is processed by the RASdelta speed measurement card. 

An LED display facilitates optimal setup of the differential sensor in relation to the gearing, to achieve the best possible signal quality.

Differential Sensor Adapter ELFP-Front_V1



The Inline TTL Digitizer (Inline-DSA) is the compact version of the ROTEC Differential Sensor Adapter (DSA) and is particularly suitable for mobile use. The electronics convert the sinusoidal signal from the ROTEC magnetic sensor into a TTL pulse sequence, which is processed by the RASdelta speed measurement card.

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ROTEC Laser Tachometer 3 (ELLAS3) is used for optical speed measurement. The electronics generate a power-regulated laser light, which is transmitted by the ROTEC laser sensor to a black-and-white stripe pattern attached to the object being measured. The light-dark transitions of the measurement object are scanned using the reflection method. This results in a pulse train with TTL level, which is processed by the RASdelta speed measurement card.

Lasertachometer3-Front_V3

The Rotary Encoder Adapter (ELDGADP2) is used for capturing TTL or SIN/COS rotary encoder signals.

The electronics generate a digital pulse train with TTL level from the signals of the incremental encoder. The Rotary Encoder Adapter captures the encoder signals in forward and reverse directions and derives direction information from them. The signals for speed and direction, as well as the reference pulse, are captured and processed by the RASdelta speed measurement card.

Additionally, the reference pulse can be tapped at a separate socket and used as a start trigger for measurements.

Rotary Encoder ELDGADP2-Front_V2


The Inline DGADP is the compact version of the ROTEC Rotary Encoder Adapter and is particularly suitable for mobile use. Additionally, the adapter is available in two variants: for TTL and for HTL incremental encoders.

The electronics generate a digital pulse train with TTL level from the signals of the incremental encoder, which serves as the measurement signal. The Inline DGADP captures the encoder signals in forward and reverse directions and derives direction information from them.

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The 4-fold sensor electronics are used to measure speeds with direction detection. The electronics convert the analog sinusoidal signal generated by the sensor into a digital pulse sequence with TTL level, which serves as the measuring signal. Together with the analog cosine signal, the direction information is also derived. The analog sensor signal and the digital TTL pulse sequence can be tapped separately via a scope output.

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  • Measures speeds with direction detection
  • Converts analog sinusoidal signal into digital pulse train with TTL level
  • Derives directional information from the measurement signal
  • Supplies sensor with voltage
  • Power supply via speed measurement card

 

Der ROTEC Laser Tachometer 3 dient zur optischen Messung der Drehfrequenz bzw. Drehzahl. Die Elektronik erzeugt ein leistungsgeregeltes Laserlicht, das vom Sensor auf ein am Messobjekt angebrachtes schwarz/weiß-Muster übertragen wird. Die Hell-Dunkel-Übergänge des Messobjekts werden im Reflexverfahren abgetastet. Das empfangene optische Signal wird erst in ein Analogsignal und dann in ein digitales Signal umgewandelt. Daraus resultiert eine Impulsfolge mit TTL-Pegel und geschwindigkeitsproportionaler Frequenz. Am Scope-Ausgang der Elektronik können das analoge Sensorsignal sowie die digitale Impulsfolge separat abgegriffen werden.

 

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  • Verzögert das originale Referenzsignal um eine einstallbare Anzahl an Drehzahlpulsen
  • Stellt synthetischen Referenzimpuls an separater Buchse zur Verfügung
  • Versorgt Rotary Encoder Adapter und Sensor mit Spannung
  • Spannungsversorgung durch Drehzahlmesskarte

The electronic valve train measuring module (ELVTMM) serves as an evaluation unit for measurements on the valve train. The electronics condition the sensor signal and calculate the valve stroke with an accuracy of +/- 10 μm. The result is provided at the BNC connector as an output voltage between 0-10 V, proportional to the valve movement. The valve train measuring module offers up to four measuring channels, a high resolution and has a high sampling frequency of the raw sensor signals. The valve position is recorded within 1 μm and output in real time as an analog voltage. This means that even very fast movements can be reliably recorded. 

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The GMR sensor adapter is suitable for valve lift measurements with the FixPitch sensor from Sensitec (GLM711AVB). The electronics are used to amplify the recorded raw signals and ensure a noise-free signal and sufficient bandwidth (signal bandwidth > 100 MHz / amplitude response 0.1 dB, up to 300 MHz). The amplified sensor signals are output via separate sine and cosine outputs. It is possible to connect two sensors in parallel. 

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RASdelta measurement boards

The powerful RASdelta Trigger Card synchronizes all measurement data between the channels, acquisition modules and connected front ends. As a master card, it is an integral part of the RASdelta. 
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  • Synchronizes all measuring cards, channels and cascaded systems
  • 1x TTL trigger input with adjustable threshold values
  • 2x TTL output + 1x analog output
    Power supply for electronic units (DC 5 V and 12 V; 5 W)
  • Data transmission via Ethernet

The RASdelta Speed Board records precise multi-channel and digital speed measurement data for all transmission, control and auxiliary drive tests. It is therefore the basis for torsional vibration analysis. The data is recorded via magnetic, angle-equidistant scanning, an incremental encoder or a laser.

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  • 2-channel measuring card with 12 GHz counter clock (time resolution = 0.081 nanoseconds)
  • Signal inputs for direction and reference pulse detection
  • Adjustable values for trigger threshold and edge
  • Operating modes: speed, frequency, duty cycle, on/off ratio

The RASdelta Analog Board measures analog variables such as airborne and structure-borne sound, acceleration, temperature, displacement or pressure. These variables can be used to determine the position of a sound source or to analyze the valve train or cylinder pressure. The analog measurement data is acquired by equidistant sampling.

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Analog board 3,2 MHz
  • 2 analog voltage inputs, galvanically isolated
  • AC and DC coupling, power supply for IEPE (ICP) sensors
  • Adjustable voltage ranges for input signals
  • 16 bit SigmaDelta ADC
  • 3.2 MHz max. sampling rate for single-channel use
  • 1.6 MHz max. sampling rate per channel for dual-channel operation
  • 1.2 MHz analog bandwidth

 

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Analog board 50 kHz
  • 3 analog voltage inputs, galvanically isolated
  • AC and DC coupling, power supply for IEPE (ICP) sensors
  • Adjustable voltage ranges for input signals
  • 24 bit SigmaDelta ADC
  • 50 kHz max. sampling rate per channel
  • 24 kHz analog bandwidth

Das RASdelta DMS (strain gauge) Board ist ein integrierter Zweikanal-Gleichspannungsverstärker für die Signalerfassung von Dehnungsmessstreifen-basierten, piezoresistiven, magnetoresistiven oder potentiometrischen Aufnehmern. Dazu gehören Kraft-, Drehmoment-, Druck-, Weg- und Winkelsensoren oder Maßstäbe. Die Karte benötigt keine zusätzlichen Messverstärker.

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2-Kanal-Messkarte
Max. Abtastrate: 50 kHz pro Kanal
Unterstützt Vollbrücken- und Halbbrückenanwendungen
Einstellbare Brückenversorgungsspannung: 1 V, 2,5 V, 5 V, 10 V
Unterstützt Vierdraht- und Sechsdraht-Konfiguration
Automatischer Nullabgleich
Erkennung von Leitungsunterbrechungen/Burn-Out
  • Zweidraht- und Vierdrahtkonfiguration für Pt 100/1000

The RASdelta strain gauge card is an integrated dual-channel DC voltage amplifier for signal acquisition from strain gauge-based, piezoresistive, magnetoresistive or potentiometric transducers. These include force, torque, pressure, displacement and angle sensors or scales. The card does not require any additional measuring amplifiers.

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  • 2-channel measurement board
  • Max. Sampling rate: 50 kHz per channel
  • Supports full bridge and half bridge applications
  • Adjustable bridge supply voltage: 1 V, 2.5 V, 5 V, 10 V
  • Supports four-wire and six-wire configuration
  • Automatic zero adjustment
  • Detection of line interruptions/burn-out

The CAN-BUS board records CAN and OBD-II variables and evaluates them in relation to the torsional vibration analysis. This means that existing variables can be included in the measurement without the need for additional sensor applications. In addition to OBD II, Raw CAN and SAE J1939 protocol, it is possible to record FD CAN data directly via the measurement PC and separate third-party hardware.

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  • 2-channel measurement board
  • Max. Baud rate: 1 Mbit/s per channel
  • Adjustable post-sampling rate
  • CAN standard 2.0 A (11-bit identifier) and 2.0 B (29-bit identifier); OBDII; J1339; (CAN-FD via PC USB connection)
  • Modes: active/passive listener
  • Adjustable BUS termination (120 Ohm)

RASdelta Mainframe

The RASdelta mainframe connects sensors and measurement cards. The housing offers space for at least 8 measurement cards, which can be combined as required. The integrated fan also makes it insensitive to temperature. In this case, one of the front ends acts as the master and synchronizes the other devices in the cluster. With the data logger function, measurements can be configured and carried out directly on the touch display. The measurement data is saved on an SD card and can later be transferred to a PC for evaluation.

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  • Space for 8 measuring cards
  • Integrated touch panel display
  • Insensitive to temperature, thanks to the integrated fan
  • Measuring cards can be replaced if necessary
  • Optionally with data logger function
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  • Space for 8 measuring cards
  • Integrated touch panel display
  • Insensitive to temperature, thanks to the integrated fan
  • Measuring cards can be replaced if necessary
  • Optionally with data logger function

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  • Slots can be expanded by cascading the RASdelta frontends
  • One front end acts as master
  • Integrated touch panel display
  • Insensitive to temperature, thanks to the integrated fan
  • Measuring cards can be replaced if required
  • Opt. with data logger function

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  • Measurements are configured and carried out directly on the touch display
  • Measurement data is saved on an SD card and can later be transferred to a PC for evaluation.