BROOKFIELD KU-1+ VISCOMETER Operating Instructions Manual No. M/97-241-B1101 SPECIALISTS IN THE MEASUREMENT AND CONTROL OF VISCOSITY BROOKFIELD ENGINEERING LABORATORIES, INC. 11 Commerce Boulevard, Middleboro, MA 02346-1031 USA TEL 800-628-8139 or 508-946-6200 F AX 508-946-6262 www.brookfieldengineering.com Brookfield Engineering Labs., Inc. Page 1 Manual No.
TABLE OF CONTENTS I. INTRODUCTION ............................................................................................................ 3 I.1 Components .................................................................................................... 3 I.2 Options ............................................................................................................ 4 I.3 Viscometer Specifications ............................................................................... 4 I.
I. INTRODUCTION The Brookfield KU-1+ Viscometer measures fluid viscosity in Krebs units. The digital display of the Viscometer shows viscosity in Krebs Units (KU) or in the associated grams value (gm). A paddle type spindle is driven at 200 rpm by a constant speed motor. The reaction torque of the spindle rotating at 200 rpm is converted to viscosity in Krebs Units. The Viscometer will measure viscosity from 40 KU to 141 KU, at weights from 32 to 1,099 grams.
I.2 Options I.2.1 Air Purge Air Purge Fitting The air purge option (Brookfield Part No. KU-1A) allows the interior of the KU-1+ to be pressurized with air (or an inert gas) when the instrument is to be used in a hazardous environment (Figure 2). A built-in pressure switch turns the instrument off when the pressure drops below 2.0 PSI (falling). The switch comes on at 10.0 PSI (rising). Connect a regulated clean air supply which is non-corrosive to brass to the fitting shown in Figure 2.
I.4 Can Specifications Container Dimensions U.S. Pint U.S. Half Pint U.S. Quart Can Height 3.850" (9.78 cm) 2.850" (7.24 cm) 4.845" (12.31 cm) Bottom Flange Diameter 3.385" (8.60 cm) 2.875" (7.30 cm) 4.230" (10.74 cm) If you have a requirement for container dimensions other than those listed above, please contact Brookfield or an authorized Brookfield agent. I.
II. OPERATION II.1 Set-Up 1) Be sure that the power switch is off. Attach the power cord to the appropriate power source. 2) Move the operating handle to the top (upper most) position. 3) Connect the printer (if used) to the parallel port. Be sure the printer power is off. 4) Loosen the thumb screw on the Viscometer shaft; insert the paddle spindle into the Viscometer shaft, as far as it will go. Line up the groove on the spindle with the hole that the thumb screw goes into. Tighten the thumb screw.
has been put into the container, the surface of the fluid will be at the immersion mark of the spindle. CAUTION: When using the 1/2 pint can, do not lower the spindle directly into the container. The narrow diameter of the can requires the spindle to be introduced at an angle. Tilt the 1/2 pint can while lowering the viscometer. 8) The spindle will begin to rotate once the handle is within 1/2 inch of the lowest position. 9) Wait 5 seconds for the display reading to stabilize.
Appendix A - KU-1+ Calibration Information The accuracy of the KU-1+ is verified using viscosity standard fluids which are available from Brookfield Engineering Laboratories or your local Brookfield dealer/distributor/representative. Viscosity Standards are calibrated at 25°C.
6) After you have recorded results in KU, then move the Selector knob to the "gm" position and record your reading in grams. If you are using a printer, both measurements will be sent to the printer and will print out as soon as the Hold Display switch is switched back to the DOWN position. Interpretation of Calibration Check Results When verifying the calibration of the KU-1+, the instrument tolerance and viscosity standard fluid tolerance must be combined to calculate the total allowable error.
5) Total allowable error for the calibration check in this example is 104.8 KU, ± 1.9 KU (102.9 KU to 106.7 KU). Since the measured reading of 105 KU falls within this range, the Viscometer is considered in calibration. Table A2 Gram KU 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 0.0 0.0 40.2 40.6 40.9 41.3 41.6 42.0 42.3 42.6 43.0 43.3 43.
Table A2 (continued) Gram 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 KU 119.0 119.0 119.1 119.2 119.2 119.3 119.4 119.4 119.5 119.5 119.6 119.7 119.7 119.8 119.8 119.9 120.0 120.0 120.1 120.1 120.2 120.2 120.3 120.3 120.4 120.4 120.5 120.6 120.6 120.7 120.7 120.8 120.8 120.
Appendix B - References The KU-1+ Viscometer is compatible with: ASTM D 562 Standard Test Method for Consistency of Paint Using the Stormer Viscometer Brookfield Engineering Labs., Inc. Page 12 Manual No.
Appendix C - Warranty Repair and Service Warranty Brookfield Viscometers are guaranteed for one year from date of purchase against defects in materials and workmanship. They are certified against primary viscosity standards traceable to the National Institute of Standards and Technology (NIST). The Viscometer must be returned to Brookfield Engineering Laboratories, Inc. or the Brookfield dealer from whom it was purchased for no charge warranty service. Transportation is at the purchaser’s expense.
