Electronic Twist tester 61

Determination of twistings no for single, double and multi-plied yarns, Open End, etc.

UNI 9069, UNI EN ISO 2060, ISO 2061, ASTM D1423, ASTM D1422, UNI EN BS ISO 2061, UNI 9067, UNI 9277, UNI 9069, ASTM D1422-99, ASTM D1423-02, NMX-A-021-1976, BS 2085, DIN 53832, IWTO 25-70

Overview:
Technical data:
Applications:
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Sample lenght: 50 cm - 19.68 Inches
Sample lenght: 1 m - 39.37 Inches
Sample lenght: 2 m - 78.74 Inches
Standard pretension set (0,5-40) g
Optional pretension set (50-250) g
Application Software TWIST4.0
Riparazione-Repair
Calibrazione - Calibration

Electronic Twist Tester 61S – Precise measurement of yarn twists per unit length

Electronic twist tester 61S for yarn twist measurement

The Electronic Twist Tester 61S determines twist number and twist direction of single and plied yarns, monofilament, multifilament and Open-End yarns made of natural or synthetic fibers.

The instrument accurately measures twists per meter (TPM) or twists per inch (TPI) on all yarn types including single, monofilament, plied, multifilament, spun, synthetic and OE yarns.

Electronic twist tester 61S control panel

Designed in compliance with international standards: UNI 9069, UNI EN ISO 2061, ASTM D1423, ASTM D1422

Reading accuracy is improved to ±0.1 twist. Test length can be set from 1 to 50 cm in standard versions via movable clamps, or up to 1–2 meters in special models, particularly suitable for tyre cord applications and high-tenacity nylon or polyester yarns.

Standard Test Methods

◼ SINGLE – Untwist–Retwist method for single spun yarns in S or Z direction (UNI ISO 2061, ASTM D1422).
◼ DIRECT – Direct counting method reaching the straight yarn section (ASTM D1423).
◼ DUAL – Suitable for plied and folded yarns.
◼ SCHUTZ – Designed for Open-End yarn testing (Schutz method).
◼ MANUAL – Direct motor control with real-time twist counting.

PRO Software Version – Additional Methods

◆ SLIPPAGE TEST – Determines fiber slippage under variable pretension weights.
◆ MULTIFILAMENT – Twist measurement for folded yarns up to 10 levels.
◆ GUIDED ANALYSES – Step-by-step guided testing on multiple bobbins via touch screen interface.

Reporting and Statistical Evaluation

Test reports can be printed via optional ASCII printer. Reports include:

Company details and sample identification
Pretension applied (grams)
Material specification
Test results in TPM or TPI
Operator signature

Additional stored data:

Starting untwist direction (S or Z)
Test length (cm or inches)
Memory capacity: up to 20 results per method

Statistical evaluations include:

Minimum / Maximum
Average
Delta (Max–Min)
Coefficient of Variation (CV%)
Standard Deviation

Results are expressed in TPM (twists per meter) or TPI (twists per inch).

TWIST4.0 PC Software

The optional application software TWIST4.0 allows LAN connection to PC for automatic statistical evaluation, trend graph generation, .csv files export.

The integration of laser check sensor monitoring represents a significant technological upgrade in twist measurement and yarn elongation, especially for high-performance and technical yarns not visible by naked eye.

Technical data:

Here below are listed all technical features of ELECTRONIC TWIST-TESTER 61S:

HMI User Interface: 5" Display Touch Screen
Pretension weights:

STANDARD PRETENSION SET

1 x 0,5 g
1 x 1 g
1 x 2 g
1 x 3 g
1 x 5 g
1 x 7 g
1 x 10 g
1 x 15 g
1 x 40 g

SPECIAL PRETENSION SET

1 x 50 g
1 x 100 g
1 x 150 g
1 x 200 g
1 x 250 g

Motor rotation speed: 5 ÷ 3000 rpm
Power supply: 110VAC/60HZ or 230VAC/50HZ;
Dimensions: 1100 x 260 x 280 mm
Net weight: 20 Kg

Applications:

Test Methods

The Branca 61 electronic twist tester allows twist testing on yarns, determination of the twist direction (S/Z), and measurement of the twist level as turns per unit length, according to the different testing modes.

Standard Version

SINGLE: untwisting and subsequent retwisting of single yarns until the initial condition is restored.
DIRECT (direct untwisting): test for single, plied and multi-level yarns according to ASTM D1423-02.
DUAL: untwisting of the plied yarn until the components become parallel, separation of the components and subsequent single-yarn testing (according to UNI standards).
SCHUTZ: testing of single-end continuous filament yarns and staple fiber yarns.
MANUAL: direct motor control operated by the user.

Special Version

MULTI-LEVEL: analysis of multi-plied samples with multiple twist levels and multiple yarn components.
GUIDED ANALYSIS: programmable number of tests per package via interactive touch screen guidance, with multi-package management (up to 10 packages).

Application Sectors

The electronic twist tester 61 is mainly used in yarn testing laboratories, spinning mills and quality control laboratories within the textile industry.

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