Selecting the right Tension Meter

Selecting the right tension meter is important for getting the best measuring result.
  1. Selecting the Model

    According to your desired use:

    Hand-held or stationary model

    Mechanical or electronic model


    According to application:

    Selecting the right model according to the application

  2. Selecting the Tension Range
    Tension Range*
    up to
    Calibration Material**
    Textil Industry
    e.g. max. yarn count
    Wire Industry
    e. g. copper wire,
    20 cNFilament: 25 tex25 texmax. 0.05 mm Ø
    50 cNPA: 0.12 mm Ø50 texmax. 0.08 mm Ø
    120 cNPA: 0.12 mm Ø120 texmax. 0.13 mm Ø
    200 cNPA: 0.12 mm Ø200 texmax. 0.17 mm Ø
    300 cNPA: 0.20 mm Ø300 texmax. 0.20 mm Ø
    400 cNPA: 0.20 mm Ø400 tex0.10 – 0.25 mm Ø
    500 cNPA: 0.20 mm Ø500 tex0.10 – 0.25 mm Ø
    1000 cNPA: 0.30 mm Ø1000 tex0.10 – 0.45 mm Ø
    1500 cNPA: 0.30 mm Ø1500 tex0.15 – 0.50 mm Ø
    2000 cNPA: 0.50 mm Ø2000 tex0.30 – 0.60 mm Ø
    3500 cNPA: 0.80 mm Ø3500 tex0.35 – 0.80 mm Ø
    5000 cNPA: 0.80 mm Ø5000 tex0.40 – 1.00 mm Ø
    8000 cNPA: 1.00 mm Ø8000 tex0.50 – 1.20 mm Ø
    10 daNPA: 1.00 mm Ø10000 tex0.70 – 1.40 mm Ø
    20 daNPA: 1.50 mm Ø20000 tex1.50 – 2.00 mm Ø
    30 daNPA: 1.50 mm Ø30000 tex1.50 – 2.50 mm Ø
    50 daNSteel rope:
    1.50 mm Ø (7x7x0.20)
    50000 tex1.50 – 3.00 mm Ø
    60 daNSteel rope:
    2.00 mm Ø (7x7x0.30)
    60000 tex1.80 – 3.50 mm Ø

    Recommendations for typical textile and wire applications

    * Tension measured in N (= Newton)
    **Calibration with standard materials – such as polyamide monofilament (PA) – according to the SCHMIDT factory procedure has been proved to provide the best results for 95 % of all industrial applications..

    Note: We recommend selecting the tension range twice the tension you intend to measure. This has the advantage that you can measure higher than expected values. It also facilitates reading the measured tension on analog scales.



    Tex-system is a weight numbering system (tex = weight in gram per 1000 m running length, that means 1 tex = 1 g/1000 m). It is used to describe the fineness of textile fibres, yarns, twines, etc. Even higher the tex-number, the stronger is the yarn. The tex-symbol is set behind the particular number, e. g. 120 tex.
    120 tex x 2 means: There are twisted 2 yarns with 120 tex.
    Fine yarns are declared with the description decitex (abbreviation = dtex). Therefor the weight adverts on continuus yarn in gram per 10000 m running length, theat means 1 dtex = 1 g/10000 m. Even higher the dtex-number, even stronger is the filament. In practice the specifications of chemical fibers occur mostly in dtex..

    If your material to be measured differs in kind and diameter:
    Please contact us for assistance to determine the right tension range and model. For this purpose a material sample of 5 m should be supplied.

  3. Select the Guide Rollers

    according to the following criteria:

    Roller shape V-grooved or with asymmetrical groove…

    Roller shape U-grooved with radius or cylindrical…

    Roller material (hardcoated aluminium, plastic, steel, etc.)…

    Max. line speed of the measured material

    different roller types for tension meters

  4. Required Accessories

    Adjustable damping

    Special lever

    Memory pointer

  5. Special Custom-Made Designs

    We provide customer-supplied designs on request:

    Special tension ranges

    Customized measuring head widths for applications

    Customized distance between the two outer rollers to minimize material deflection

    Calibration for material path other than vertical

    Calibration to different units, such as g or kg

    For more information please contact us.

  6. Calibration using Customer-Supplied Material

    This is recommended when the material to be measured differs significantly from the SCHMIDT calibration material in diameter, rigidity of shape etc. For this purpose a material sample of about 5 m should be supplied.

  7. Inspection Certificate 3.1

    according EN 10204 with calibration report optional.
    These Quality Certificates are optionally available and are recommended especially for ISO 9000 certified companies. Certificate of Compliance with the order 2.1 according EN 10204 is included.

    If you need assistance…
    Should you need any help in selecting your tension meter, please contact us directly, or the service department of your machinery supplier. In any case, please furnish the following information:

    Description of application and machinery, picture

    Description of the material to be measured (Ø, type, characteristics, etc..)

    Line speed of the material

    Maximum measuring head width or available access space

    Recommended or estimated tension

    If necessary, submit a material sample of about 5 m