This unit will work with any ball winder or other device that can pull yarn through it. But only the NKK Power Base, which has been sold since 2008 and which powers our Heavy Duty Ball Winder, will accept a connection from this meter and allow the meter to shut the Power Base off.
The EYM Measures Yarn in both Yards and Meters. It will also allow you to convert length to weight so that you can measure out ounces or grams.
Detailed Overview of how the EYM works
The EYM is designed to work with all types of Ball Winders and Swifts. From the smallest ball winder to the largest. The unit can be adjusted both in height and in table depth (in from the table's front edge). This places the EYM's yarn orifice (curly Q) at the correct position between the swift and the ball winder to prevent the addition of unintentional yarn tension.
In addition to the height and depth adjustments, the user can even rotate the EYM Module around the vertical 1" hardwood dowel giving the user a 3rd axis with which to make adjustments in the yarn path.
EYM Model Max. Height from table surface = 14"
Max. Table Depth from front edge of table = 11"
Rotation of meter head = 360 degrees
Accuracy of Measurement
The EYM utilizes a high tech electronic optical encoder system combined with a custom designed microprocessor controlled circuit card.
The unit divides each inch of yarn into 28.4 equal segments and then performs its calculations to measure either yards, meters, or weight. At the maximum speed of the unit (up to 7-10 yds per second) under normal use, this means that over 11,000 data signals are interpreted by the computer every second.
The end result: 0.001% error rate for meters (that is 1 meter per 1,000 meters measured) and 0.003% error rate for yards (that is 3 yards per 1,000 yards measured). The reason that Metric measurements are more accurate is because there are 100 centimeters in a meter and only 36 inches in a yard. This finer degree of resolution for metric results in a more finely tuned measurement. When compared to mechanical meters under the best of circumstances (which have error rates of approx 5% or more) that means that the EYM measures from 17 to 50 times more accurately and much more consistently than the typical mechanical fishing meter based systems.
Accuracy also has much to do with the method by which the yarn drives the measurement wheel/pulley. In the fishing meter type systems, the yarn engages a very small amount of the pulley's surface (20-30 degrees of contact). In the EYM, the contact area is 180 degrees approx.. Furthermore, the EYM utilizes a large diameter drive wheel which has a soft foam rubber type surface which ensures that the yarn will not slip over the surface. Yarn slippage is the Achilles heel of the mechanical fishing meter systems and we made sure in our design of the EYM that yarn slippage would not occur.
Please note, however, that when the user directs the yarn underneath the wheel as opposed to over the top and around the wheel, that slippage could begin to creep into the accuracy equation. But notwithstanding that, accuracy rates in the EYM will still outperform virtually every known metering system.
The last element of measurement accuracy has to do with the mechanical axle that both supports the structure and connects the drive wheel with the optical encoder. The EYM's drive shaft utilizes two ball bearing units to ensure trouble free and friction free rotation. This design does not add any significant drag or tension to the yarn while it is being measured.
Please note: the user must ensure that the axle area in the front of the housing (where the axle emerges from the housing prior to connecting to the drive wheel) is not jammed with fiber debris. Fiber debris build-up in this area will impede the unit from freely turning and cause errors in the measurement or other more serious probems.
- Yarn Type - The EYM has a 5/16" diameter orifice on its yarn guides. As long as your yarn will fit through these openings, you will be able to measure it with the EYM. This includes ribbon yarns and other novelty yarns.
- Yarn Direction - You may measure yarn in either direction through the EYM.
- Power - The EYM utilizes standard 100-240 VAC 50-60 Hz power on the input side, but delivers 12 Volts DC to the meter. This makes it capable of being used anywhere on the planet. The unit will go into Sleep mode after 5 minutes of inactivity. The user can bring it out of sleep mode by simply pressing the Reset button once (pressing it twice will clear the last qty. measured and target qty. information).
- Warranty - 1 year limited warranty for both consumer and commercial users
- Shipments - started in 2009 and hundreds have shipped since that time.
Other EYM Systems/Connections
In addition to the standard RS485 stop signal that is used by the Power Base used with the Ball Winder, the EYM can also send a stop signal that is interpreted by 1 other system that we offer (the Motorized Skein-winder). When using it with our motorized skeinwinder, you simply plug the EYM into the EYM jack on the skein-winder. If you would like more information about these other connections, please contact us.