The YSL-2000HD combines the functions of three separate instruments in one, easy-to-use device. It accurately measures the speed and length of yarns, wires and other filaments using a unique "wrapper" roller. This precision roller directs the filament onto the low-inertia, U-grooved measuring wheel to maximize contact and eliminate filament slip and breakage. The YSL-2000HD can also be used as either a contact or non-contact tachometer to measure rotational speeds of shafts, motors, pulleys, etc. or linear speeds of moving surfaces such as conveyor belts, webs of paper or fabric, etc. 
Features
- Slide-on measuring heads make it simple to rapidly convert from one function to another
- 5 Year Warranty
- Accuracy of ± 0.02%
- NIST Certification Included
- Built-in memory for last, maximum, minimum values
Specifications
| RPM | Non-Contact: 1.00 - 99,999 rpm
Contact: 1.00 - 19,999 rpm | | Surface Speed | 0.30 - 6,500 feet/min
0.10 - 1,999 meters/min
4.0 - 78,000 inches/min | | Length | 0.01 - 99,999 feet
0.02 - 99,999 meters
1.0 - 99,999 inches | | Resolution | .01 from 0 - 100
.1 from 100 - 1,000
1 from 1000 - 99,999 | | Yarn/Wire Diameter (max.) | Yarn: 1mm Wire: 0.3mm | | Accuracy | ± 0.02% of reading or 1 digit | | Display | 5 - Digit LCD, 10mm high | | Decimal Point | Automatic | | Memory System | Maximum, minimum, and last reading (retained in memory for the life of the batteries) | | Measurement System | Non-Contact: Visible LED light beam
Contact: Contact adapter | | Sensing Distance | Up to 14 inches (350mm) | Display Update
Time | 0.5 seconds or one measuring | | Auto Power Off | After 30 seconds of non-use (minimum, maximum and last reading retained in memory) | | Battery Life | 20 hours continuous use | | Weight | 6 ounces (170 grams) | | Housing Material | ABS Plastic | | Operating Temp | 32 to 122° F (0 to 50° C) | | Storage Temp | -4 to 150° F (-20 to 70° C) | | Accessories | Shaft extension, 3.15 inches (80 mm) | | Warranty | 5 years |
Optional Accessories
| Linear Speed | Length | Revolutions | | feet/min | feet | rpm | | meters/min | meters | | | inches/min | inches | |
Complete Kit
The YSL unit, two slide-on measuring heads (tachometer and yarn speed), cone tip, universal surface speed wheel with integrated funnel tip adapter, reflective tape, two AA batteries and operating instructions, all supplied in a foam-fitted, hard-plastic carrying case
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