
TYPE A
Two-part design - the preferred direction can be set after mounting the sensor
Suitable for the standard temperature range -15°C to 100°C
Optionally with direction of rotation detection (4-fold sensor)ROTEC MEASUREMENT TECHNOLOGY
Magnetic and optical sensors for rotational speed, direction of rotation and valve movement.

ROTEC MEASUREMENT TECHNOLOGY
Magneto-resistive differential sensors detect rotational speed at ferromagnetic gears. Different designs accommodate the available installation space.

Two-part design - the preferred direction can be set after mounting the sensor
Suitable for the standard temperature range -15°C to 100°C
Optionally with direction of rotation detection (4-fold sensor)

ROTEC MEASUREMENT TECHNOLOGY
Magneto-resistive differential sensors detect rotational speed at ferromagnetic gears. Different designs accommodate the available installation space.

Two-part design - the preferred direction can be set after mounting the sensor
Suitable for the standard temperature range -15°C to 100°C
Optionally with direction of rotation detection (4-fold sensor)

ROTEC MEASUREMENT TECHNOLOGY
Magneto-resistive differential sensors detect rotational speed at ferromagnetic gears. Different designs accommodate the available installation space.

Two-part design - the preferred direction can be set after mounting the sensor
Suitable for the standard temperature range -15°C to 100°C
Optionally with direction of rotation detection (4-fold sensor)

ROTEC MEASUREMENT TECHNOLOGY
Magneto-resistive differential sensors detect rotational speed at ferromagnetic gears. Different designs accommodate the available installation space.

Two-part design - the preferred direction can be set after mounting the sensor
Suitable for the standard temperature range -15°C to 100°C
Optionally with direction of rotation detection (4-fold sensor)

ROTEC MEASUREMENT TECHNOLOGY
Laser sensors detect rotational speed by scanning a black-and-white zebra pattern. Grating tapes and discs are available in standard sizes. A correction mechanism in RAS Software accounts for the join when grating tape is used.

Scanning of the object from the front or via a deflecting mirror at a 90° angle possible.
Fibre optic cable available with textile or metal sheathing.
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High-quality grating patterns support the quality of the rotational speed signal.
Grating tapes and discs are available in standard sizes. Custom patterns are available on request.
ROTEC MEASUREMENT TECHNOLOGY
Laser sensors detect rotational speed by scanning a black-and-white zebra pattern. Grating tapes and discs are available in standard sizes. A correction mechanism in RAS Software accounts for the join when grating tape is used.

Scanning of the object from the front or via a deflecting mirror at a 90° angle possible.
Fibre optic cable available with textile or metal sheathing.
.png?width=1200&height=564&name=Banner%20Kachel%20(7).png)
High-quality grating patterns support the quality of the rotational speed signal.
Grating tapes and discs are available in standard sizes. Custom patterns are available on request.
ROTEC MEASUREMENT TECHNOLOGY
Laser sensors detect rotational speed by scanning a black-and-white zebra pattern. Grating tapes and discs are available in standard sizes. A correction mechanism in RAS Software accounts for the join when grating tape is used.

Scanning of the object from the front or via a deflecting mirror at a 90° angle possible.
Fibre optic cable available with textile or metal sheathing.
.png?width=400&height=188&name=Banner%20Kachel%20(7).png)
High-quality grating patterns support the quality of the rotational speed signal.
Grating tapes and discs are available in standard sizes. Custom patterns are available on request.
ROTEC MEASUREMENT TECHNOLOGY
Laser sensors detect rotational speed by scanning a black-and-white zebra pattern. Grating tapes and discs are available in standard sizes. A correction mechanism in RAS Software accounts for the join when grating tape is used.

Scanning of the object from the front or via a deflecting mirror at a 90° angle possible.
Fibre optic cable available with textile or metal sheathing.
.png?width=400&height=188&name=Banner%20Kachel%20(7).png)
High-quality grating patterns support the quality of the rotational speed signal.
Grating tapes and discs are available in standard sizes. Custom patterns are available on request.
ROTEC MEASUREMENT TECHNOLOGY
The Sensitec GLM711AVB is designed for passive scales with a 1 mm pitch. A bias magnet and sensor element share a compact housing. With a ferromagnetic tooth structure, it provides two analogue signals, sine and cosine, phase-shifted by 90 degrees.
Typical applications include valve lift curves in a fired engine and valve rotation measurement.
-png.png?width=350&height=233&name=Design%20ohne%20Titel%20(18)-png.png)
Very compact size
Magnetically biased
Wired ready for connection
Valve lift measurement in combustion engines
Valve rotation measurement
Tappet rotation measurement
Measurement on gear wheels or gear racks
Measurement on sliding cam mechanisms
Many other applications with toothed structures
ROTEC MEASUREMENT TECHNOLOGY
The Sensitec GLM711AVB is designed for passive scales with a 1 mm pitch. A bias magnet and sensor element share a compact housing. With a ferromagnetic tooth structure, it provides two analogue signals, sine and cosine, phase-shifted by 90 degrees.
Typical applications include valve lift curves in a fired engine and valve rotation measurement.
-png.png?width=1563&height=1041&name=Design%20ohne%20Titel%20(18)-png.png)
Very compact size
Magnetically biased
Wired ready for connection
Valve lift measurement in combustion engines
Valve rotation measurement
Tappet rotation measurement
Measurement on gear wheels or gear racks
Measurement on sliding cam mechanisms
Many other applications with toothed structures
ROTEC MEASUREMENT TECHNOLOGY
The Sensitec GLM711AVB is designed for passive scales with a 1 mm pitch. A bias magnet and sensor element share a compact housing. With a ferromagnetic tooth structure, it provides two analogue signals, sine and cosine, phase-shifted by 90 degrees.
Typical applications include valve lift curves in a fired engine and valve rotation measurement.
-png.png?width=350&height=233&name=Design%20ohne%20Titel%20(18)-png.png)
Very compact size
Magnetically biased
Wired ready for connection
Valve lift measurement in combustion engines
Valve rotation measurement
Tappet rotation measurement
Measurement on gear wheels or gear racks
Measurement on sliding cam mechanisms
Many other applications with toothed structures
ROTEC MEASUREMENT TECHNOLOGY
The Sensitec GLM711AVB is designed for passive scales with a 1 mm pitch. A bias magnet and sensor element share a compact housing. With a ferromagnetic tooth structure, it provides two analogue signals, sine and cosine, phase-shifted by 90 degrees.
Typical applications include valve lift curves in a fired engine and valve rotation measurement.
-png.png?width=350&height=233&name=Design%20ohne%20Titel%20(18)-png.png)
Very compact size
Magnetically biased
Wired ready for connection
Valve lift measurement in combustion engines
Valve rotation measurement
Tappet rotation measurement
Measurement on gear wheels or gear racks
Measurement on sliding cam mechanisms
Many other applications with toothed structures
QUESTIONS & ANSWERS
Magneto-resistive differential sensors detect ferromagnetic tooth structures. Optical laser sensors scan a suitable grating pattern. Installation space, surface, temperature and the required direction information determine the choice.
Type A is optionally available as a four-fold sensor for direction detection. Suitable signal conditioning passes the direction information to the RASdelta speed card.
When grating tape is used, a correction mechanism in RAS Software can account for the join.
ROTEC supports measurement-point design, sensor installation, measurement and analysis. Training can be tailored to the application.
NEWS & TECHNICAL INSIGHTS
Technical insights into rotational measurement and news from the ROTEC network.
With its Shanghai office and regional contacts, ROTEC is expanding technical support for customers and partners in China.
The return to the original name connects ROTEC’s history with the continued development of precise rotational analysis and measurement technology.
How transmission errors arise and how rotational and order analysis help investigate vibration and noise in wind turbine gearboxes.