PICOTURN-2G

PICOTURN: Rotational Speed Sensing

PICOTURN-2G: The Smart Sensor to Measure Your Turbochargers Speed

PICOTURN-2G represents the second generation of acam's well established system to measure the rotational speed of turbochargers compressor wheels. As a fully integrated and compact solution the PICOTURN-2G is a miniaturized sensor system that perfectly suits to applications in the engine bay. PICOTURN-2G represents the second generation of acam's well established system to measure the rotational speed of turbochargers compressor wheels. As a fully integrated and compact solution the PICOTURN-2G is a miniaturized sensor system that perfectly suits to applications in the engine bay. The sensors are IP 67 proof and provide a standard TTL / CMOS output signal, whereas each edge corresponds to one vane of the compressor wheel. The open system architecture and the modular system design allows an easy integration into existing measurement systems as a stand-alone solution or optionally with acam's PT2G-BX or PT2G-BD signal conditioning boxes.

Features

  • Measuring principle: Attenuation by eddy currents
  • Sensing directly the compressor wheel
  • Fully integrated sensor electronics
  • Self-adjustment simplifies mounting
  • Comfortable spacing sensor-wheel
  • Suitable even for small compressor wheels (32mm)
  • No modification of rotating parts
  • Rotational speeds up to 400.000 rpm
  • Digital TTL/CMOS output
  • Optional signal conditioning with PT2G-BX, PT2G-BD

    Advantages

    • Fully integrated smart sensor solution
    • Improved stability against electromagnetic interferences
    • For passenger cars and commercial vehicles
    • Extended cable length up to 10m, without preamplification
    • Easy integration into existing measurement system
    • Suitable for single stage and two stage systems
    • Price attractive


        DescriptionVersionSizeDownload
        Datasheet PICOTURN-BM:
        PICOTURN rotational speed sensor for turbochargers
        586kBDB_PicoTurnBM_e.pdf
        Datasheet PICOTURN-CT:
        Calibration device for PICOTURN-BM
        173kBDB_PicoTurnCT_e.pdf
        Datasheet PICOTURN-2G:
        Smart sensor for turbochargers
        V1.5652kBDB_PT2G_e.pdf
        DescriptionVersionSizeDownload
        Application Note 094:
        Using PuTTY.EXE as a Port Monitor for the PICOTURN-2G System
        V1.1800kAN094_e.pdf
        DescriptionVersionSizeDownload
        PDN PICOTURN-DY:
        Discontinuation of Production
        V160KPDN0910-01.pdf
        PICOTURN Measuring Principle

        Rotational Speed Sensor for Turbochargers

        The sensor is made of a simple coil with a ferrite core. Together with a resistor this forms an R-L network, the time constant of which is measured by a TDC. Placing a vane of the compressor wheel in front of the coil will change the time constant of the R-L network by the appearance of eddy currents. A DSP-unit following the TDC measurement unit processes the time data and calculates the rotational speed.

        The time measurement is done with very high precision. The resolution is about 125 ps. The time constant of the R-L network can be very small, allowing high sampling rates in the range of 1 to 3 million samples per second.

        The effect of eddy current damping is best for paramagnetic materials. This method therefore is very good for detecting aluminum wheels.

        The maximum distance of the sensor from the wheel depends on the shape of the vanes. It varies from 0.8 mm (32 mm wheels) to 1.6 mm than 1 mm (90 mm wheels). Thanks to the ratio measurement any trimming of the coils is not necessary. The length of the cable between sensor and circuit may be up to several meters. This allows to separate the electronics part from the sensing part, reducing thermal and vibrational influences on the electronics.

        The special kind of measurement reduces the influence of changes in the dielectric constant (e.g. by dirt) to a minimum.

        Videos

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        GP30 UFC

        History of TDCs

        Lighting Sensors

        NFC's Near Field Communications

        PicoCap

        PicoStrain

        PicoTurn

        POS Position Sensors

        Power Management ICs

        Surface Concept

        Synkera VOC

        TDCs

        Temperature and Humidity Sensor

        The Ring Oscillator

        Acam's Picoturn by PMT

        PICOTURN Ordering Numbers

        PT2G (Second Generation)

        Product

        Description

        Part No.

        Sensors

        PT2G-SM5.3

        Intelligent sensor with integrated signal processing and TTL output, sensor length 60 mm / 54 mm thread, 230°C

        MNR 1537

        PT2G-SM5.5

        Intelligent sensor with integrated signal processing and TTL output, sensor length 46 / 40 mm tread, 230°C

        MNR 1591

        PT2G-SM5.6

        Intelligent sensor with integrated signal processing and TTL output, sensor lenght 75 / 69 mm tread, 230°C

        MNR 1660

        PT2G-SM5F.2

        Intelligent sensor with integrated signal processing and TTL output, sensor lenght 75 / 69 mm fine read, 230°C

        MNR 1590

        PT2G-SM5F.3

        Intelligent sensor with integrated signal processing and TTL output, sensor length 56 / 40 mm fine thread, 230°C

        MNR 1538

        PT2G-SM5F.5

        Intelligent sensor with integrated signal processing and TTL output, sensor length 76 / 60 mm fine thread, 230°C

        MNR 1666

        Accessories

        PT2G-BX

        Signal conditioning box with RS232 interface

        MNR 1526

        PT2G-BD

        Signal conditioning box with display

        MNR 1527

        PT2G-XS-01.5

        Adapter cable, interconnecting PT2G-SM...sensor and PT2G-B...signal conditioning box, 1,5 m lenght

        MNR 1771

        PT2G-XS-03

        Cable connecting sensor and signal conditioning box, 3 m length

        MNR 1569

        PT2G-XS-05

        Cable connecting sensor and signal conditioning box, 5 m length

        MNR 1539

        PT2G-XS-10

        Cable connecting sensor and signal conditioning box, 10 m length

        MNR 1540

        PT2G-C-2B

        Power supply cable, 4 mm "banana" connectors, 2 m lenght

        MNR 1541

        PT2G-C-2U

        Power supply cable , open end, 2 m length

        MNR 1542

        PT2G-C-2B&2BNC

        Combination cable for power supply and signals(2 x BNC, 2 X "banana" 4 mm), lenght 3 m / 3.6 m 

        MNR 1659

        PT2G-X-CT

        Cable, interconnecting PT2G-B...box and PICOTRUN-CT calibration device

        MNR 1543

        PT2G-CCT

        Cable connecting PT2G-BD to PICOTURN-CT calibration device

        MNR 1767

        PT2G-C-CSM2M

        Cable, connecting one PT2G sensor to a "CNTMM" counter minimodule by GSM GmbH, lenght 2m (also available in 10m)

        MNR 1963

        PT2G-C-ETAS_E441

        Cable connecting two sensors PT2G to one "E441" module by ETAS GmbH, lenght: 2m

        MNR 1984

        PT2G-C-IPTRKLM

        Cable. connecting one PT2G sensor to an IPETRONIK "SIM_CNT" or "-FRQ" counter module

        MNR 1667

        PICOTURN-BM/SM (First Generation)

        Product

        Description

        Part No.

        Controller Unit

        PICOTURN-BM V6

        Controller with BNC output connectors for 8 to 30 V power supply

        MNR 1242

        Sensors

        PICOTURN-SM5.1

        Sensor M5, L=60 mm, 1.5 m cable length, for temperatures up to 180°C

        MNR 586

        PICOTURN-SM5.2 (*)

        Sensor M5 L=60 mm, with reduced head diameter (3.6 mm), 1.5 m cable length, 180°C

        MNR 607

        PICOTURN-SM5.3

        Like SM5.1 but for high temperatures up to 230°C

        MNR 933

        PICOTURN-SM5.5 (*)

        Sensor M5 L=46 mm, 1.5 m cable length, 230°C

        MNR 998

        PICOTURN-SM5.5L (*)

        Sensor M5 L=46 mm, 2.0 m cable length, 230°C

        MNR 1108

        PICOTURN-SM5.6 (*)

        Sensor M5 L=75 mm, 1.5 m cable length, 230°C

        MNR 1059

        PICOTURN-SM5.7 (*)

        Sensort M5 L=45 mm, with reduced head diameter (3.6 mm), 1.5 m cable length, 180°C

        MNR 1065

        PICOTURN-SM5F.2

        Sensor M5 fine thread for high temperature range up to 230°C,

        L=41 mm, 1.5m cable length

        MNR 934

        PICOTURN-SM5F.3 (*)

        Sensor M5 fine thread for high temperatures up to 230°C, L=56 mm,

        1.5 m cable length

        MNR 1081

        PICOTURN-SM5F.3L (*)

        Sensor M5 fine thread for high temperatures up to 230°C, L=56 mm,

        2.0 m cable length

        MNR 1109

        Accessories

        PICOTURN-CT

        Calibration Device for PICOTURN-BM controllers

        MNR 890

        Extension cable

        1.5 m SMB-SMB, for sensors

        MNR 594

        Extension cable (**)

        2.5 m SMB-SMB, for sensors

        MNR 707

        Clamping nut

        for M5 fine thread sensors -SM5F.x

        MNR 696

        PICOTURN-SM5.1, -SM5.3
        (Click To Enlarge)
        PICOTURN-SM5.7
        (Click To Enlarge)
        PICOTURN-SM5.2
        (Click To Enlarge)
        PICOSTRAIN-SM5F.2
        (Click To Enlarge)
        PICOTURN-SM5.5
        (Click To Enlarge)
        PICOTURN-SM5F.3
        (Click To Enlarge)
        PICOTURN-SM5.6
        (Click To Enlarge)

        ADDITIONAL INFORMATION