equipment sourcebook - Loctite.ph

DISPENSINGVariable Ratio Systems for Meter Mix 1000, 2000 and 3000 Dispense SystemsVariable ratio machines are capable of changing the mix ratio within the pump configurations capabilities. To specify a VARIABLE RATIOpump configuration, use chart 2. Variable ratio units have the same standard pump sizes; 8, 10, 15, 20 and 25 mm.CHART 2 - Variable Ratio Pump Diameter Configuration and Corresponding Mix RatioTwo-Part VolumetricDispensingMeter Mix SystemsHIGH VOLUME PUMP (mm) 8.000 9.500 10.000 11.000 12.000 13.000 14.000 15.000 20.000 25.000 30.000 35.000LOW VOLUME PUMP (mm) Output CCs 1.277 1.800 1.995 2.414 2.873 3.371 3.910 4.489 7.980 12.468 17.954 24.4388.000 @ MAX 0.906 1.41 1.99 2.20 2.66 3.17 3.72 4.31 4.95 8.80 13.75 19.81 26.968.000 @ MIN 0.300 4.26 6.00 6.65 8.05 9.57 11.24 13.03 14.96 26.60 41.56 59.84 81.459.500 @ MAX 1.278 1.00 1.41 1.56 1.89 2.25 2.64 3.06 3.51 6.24 9.75 14.05 19.129.500 @ MIN 0.423 3.02 4.26 4.72 5.71 6.79 7.97 9.24 10.61 18.86 29.47 42.44 57.7610.000 @ MAX 1.416 0.90 1.27 1.41 1.70 2.03 2.38 2.76 3.17 5.63 8.80 12.68 17.2510.000 @ MIN 0.469 2.72 3.84 4.26 5.15 6.13 7.19 8.34 9.57 17.02 26.60 38.30 52.1311.000 @ MAX 1.714 0.74 1.05 1.16 1.41 1.68 1.97 2.28 2.62 4.66 7.28 10.48 14.2611.000 @ MIN 0.567 2.25 3.17 3.52 4.26 5.06 5.94 6.89 7.91 14.07 21.98 31.65 43.0812.000 @ MAX 2.040 0.63 0.88 0.98 1.18 1.41 1.65 1.92 2.20 3.91 6.11 8.80 11.9812.000 @ MIN 0.675 1.89 2.67 2.96 3.58 4.26 4.99 5.79 6.65 11.82 18.47 26.60 36.2013.000 @ MAX 2.394 0.53 0.75 0.83 1.01 1.20 1.41 1.63 1.88 3.33 5.21 7.50 10.2113.000 @ MIN 0.792 1.61 2.27 2.52 3.05 3.63 4.26 4.94 5.67 10.07 15.74 22.66 30.8414.000 @ MAX 2.776 0.46 0.65 0.72 0.87 1.03 1.21 1.41 1.62 2.87 4.49 6.47 8.8014.000 @ MIN 0.919 1.39 1.96 2.17 2.63 3.13 3.67 4.26 4.88 8.68 13.57 19.54 26.6015.000 @ MAX 3.187 0.40 0.56 0.63 0.76 0.90 1.06 1.23 1.41 2.50 3.91 5.63 7.6715.000 @ MIN 1.055 1.21 1.71 1.89 2.29 2.72 3.20 3.71 4.26 7.57 11.82 17.02 23.1720.000 @ MAX 5.666 0.23 0.32 0.35 0.43 0.51 0.60 0.69 0.79 1.41 2.20 3.17 4.3120.000 @ MIN 1.875 0.68 0.96 1.06 1.29 1.53 1.80 2.09 2.39 4.26 6.65 9.57 13.0325.000 @ MAX 8.852 0.14 0.20 0.23 0.27 0.32 0.38 0.44 0.51 0.90 1.41 2.03 2.7625.000 @ MIN 2.930 0.44 0.61 0.68 0.82 0.98 1.15 1.33 1.53 2.72 4.26 6.13 8.3430.000 @ MAX 12.747 0.10 0.14 0.16 0.19 0.23 0.26 0.31 0.35 0.63 0.98 1.41 1.9230.000 @ MIN 4.219 0.30 0.43 0.47 0.57 0.68 0.80 0.93 1.06 1.89 2.96 4.26 5.7935.000 @ MAX 17.351 0.07 0.10 0.11 0.14 0.17 0.19 0.23 0.26 0.46 0.72 1.03 1.4135.000 @ MIN 5.743 0.22 0.31 0.35 0.42 0.50 0.59 0.68 0.78 1.39 2.17 3.13 4.26SELECTION PROCESS1. Determine the adhesive shot volume required per part, in cubic centimeters (cc’s; same as ml’s), from production requirements.2. From adhesive technical data sheet, determine the adhesive volumetric mix ratio(high volume component/low volume component).3. Review the pump pair combination and corresponding blue maximum and minimum output and ratio range requirements within thewhite or gray grids and choose a configuration using the following parameters See examples 3 and 4.a. The required shot must be > 15% of the minimum output (cc’s) of the combined pump pair configuration. The minimumpump configuration output is equal to the High Side Pump + minimum output for the Low Side Pump.b. The required shot should be < 85% of the of the maximum output (cc’s) of the pump pair configuration. The maximumpump configuration output is equal to the (High Side pump CC maximum + maximum Low Side Pump).4. As with fixed ratio, if required volumes are exceeded or mix ratios are not exact, repeat steps 3a or 3b in thefixed ratio selection process.EXAMPLE #3 VARIABLE RATIO – EPOXY PRODUCT AHigh volume = 2 Low volume = 1Mix ratio = 2/1 = 2Per part shot size = 2.5 cc (2.5 ml)High volume pump = 15 mm Low volume pump = 13 mm15% min pump combination output = 0.7921 cc (0.15 x 4.489 cc + 0.7921 cc)85% max pump combination output = 5.850 cc (4.489 cc + 2.394 cc) x 0.85)Mix ratio range = 1.88:1 – 5.67:1 - passShot size of 2.5 cc within 15% ruleRecommended configuration = 15 mm /13 mm15 mm pump is standard; 13 mm pump is special. One special pump-sizing fee applies.EXAMPLE #4 VARIABLE RATIO – EPOXY PRODUCT BHigh volume = 4 Low volume = 1Mix ratio = 4/1 = 4Per part shot size = 5.0 cc (5.0 ml)High volume pump = 15 mm Low volume pump = 13 mm15% min pump combination output = 0.7921 cc (0.15 x 4.489 cc + 0.7921 cc)85% max pump combination output = 5.850 cc (4.489 cc + 2.394 cc) x 0.85)Mix ratio range = 1.88:1 – 5.67:1 - passShot size of 2.5 cc within 15% ruleRecommended configuration = 15 mm/13 mm15 mm pump is standard; 13 mm pump is special. One special pump-sizing fee applies.42For additional information and the full line of equipment, visit www.equipment.loctite.com.