Product SpeciŢcations The Ramsey Series 20 Belt Scale System monitors feed to crushers, mills, screens and other processes with an accuracy of ±0.5%, even in the harshest applications. The Ramsey Series 20 lets you monitor production output and inventory, or regulate product loadout, while providing vital information for the effective management and efŢcient operation of your business. Ramsey Series 20 Belt Scale System Accurate conveyor weighing of bulk materials Designed for general in-plant belt conveyor Easy Installation weighing applications in the most demanding Easy to install, indoors or out, on Ţxed or industrial environments, Thermo Electron portable conveyors, the rugged construction Corporation’s Ramsey Series 20 Belt Scale of the Ramsey Series 20 allows for System lets you control feed rates to installation in the harshest applications at crushers, mills, screens and other processes a variety of locations. with incredible accuracy. It can monitor The Weighbridge production output and inventory, or control Rigid and rugged, the Ramsey 10-20 and product loadout, while providing vital 10-22 Weighbridges remain permanently information for the management and aligned within the conveyor frame. This operation of your business. one-piece, drop-in style weighbridge is The Ramsey Series 20 combines the Applications completely assembled at the factory and proven reliability of the Ramsey 10-20 • Crushing plants is quickly and easily installed and aligned Single Idler or 10-22 Dual Idler Weighbridge • Chemical plants properly on the conveyor. It is designed and the Ramsey 60-12 Belt Speed Sensor • Asphalt plants to provide additional stiffening and support with the power and versatility of the advanced • Mines to minimize conveyor deţection. electronics in the Ramsey Micro-Tech 2000 • Cement mills Both the single and the dual-idler Series or the Ramsey Micro-Tech 3000 Series • Coal preparation plants models offer three-point suspension and of electronic integrators. • Paper mills employ trunnion-type, frictionless pivots. For more information about the Ramsey • Gypsum mills These sealed units are impervious to Micro-Tech series of electronic integrators, • Sand and gravel operations vibration, moisture and product build-up, please refer to catalog PI8011.0703. • Coal-Ţred power plants which eliminates problems commonly • Ore beneŢcation processes associated with knife edges and bearings. • Rail loadouts TM Formerly Thermo Ramsey Analyze • Detect • Measure • Control Features & BeneŢts Ramsey 10-20 Weighbridge Ramsey Micro-Tech 2001 Field Mount Unit Belt Speed Sensor 60-12 Speed Sensor The Belt Speed Sensor Thermo’s Ramsey 60-12 Digital Belt Speed Sensor is the most reliable and accurate speed-sensing device ever developed for belt Retaining Spring 9.53 mm ş 12.7 mm (0.5 in) (0.375 in) scale service. Direct-coupling the sensor to the conveyor tail pulley, spring hole snubbing roll, or a large diameter return roller ensures an accurate 338 mm (13.31 in) belt-travel readout. No wheels ride on the belt, which eliminates problems related to material build-up and slippage. 178 mm Mechanical Stop (7.00 in) Weighbridge Advantages 70 mm • No moving or wearing parts 13 mm (2.75 in) 127 mm (5.00 in) (0.50 in) • Precision strain-gauge load cell applied in tension to guarantee load cell alignment and accuracy • Total deţection of idler(s) less than 0.102 mm (0.004 in) 64 mm (2.50 in) • Slim proŢle to minimize material build-up Shaft Rotation 43 mm • Optional counterweighted carriages for light belt (1.69 in) loading applications 130 mm (5.13 in) Belt Speed Sensor Advantages • Rugged, cast-aluminum housing suitable for outdoor installations • A.C. pulse generator means no brushes to adjust or replace Performance Guarantee On factory-approved installations, we warrant that the Ramsey 6 mm Series 20 Belt Scale System will weigh and totalize to a value (0.25 in) within ±0.5% of the test value when calibrated against a known test weight, chain, or Thermo’s standard electronic calibration. Ramsey Series 20 Belt Scale System Ramsey 10-20 Single Idler Weighbridge Dimensions 927 mm (36.0 in) 4 x 20.6 x 25.4 mm Belt Travel F 50.8 mm (2.0 in) ( .81 x 1.00 in) Slot G 15.875 mm diameter (.625 in ) Mounting Holes (in bridge & trunnions) C D A B * ** * * * -3 -2 -1 WI +1 +2 +3 A 165 mm (6.50 in) 216 mm (8.5 in) 152 mm (6.00 in) clearance required E D *All idler spacings in scale area must be equal. Ramsey Series 20 Single Idler Belt Scale — Variable Belt Width Dimensions BELT LENGTH (in) BELT LENGTH (mm) WIDTH A B C D E F G WIDTH A B C D E F G 18 29.00 21.00 18.00 27.00 24.00 487 737 533 487 686 610 20 31.00 23.00 20.00 29.00 26.00 508 787 584 508 737 660 24 35.00 27.00 24.00 33.00 30.00 24.00 8.00 610 889 686 610 838 762 610 203 30 41.00 33.00 30.00 39.00 36.00 762 1041 838 762 991 914 36 47.00 39.00 36.00 45.00 42.00 914 1194 991 914 1143 1067 42 53.00 45.00 42.00 51.00 48.00 1067 1346 1143 1067 1295 1219 48 59.00 51.00 48.00 57.00 54.00 1219 1499 1295 1219 1448 1372 54 65.00 57.00 54.00 63.00 60.00 22.75 9.25 1372 1651 1448 1372 1600 1524 578 235 60 71.00 63.00 60.00 69.00 66.00 1524 1803 1600 1524 1753 1676 72 83.00 75.00 72.00 81.00 78.00 1829 2108 1905 1829 2057 1981 Ramsey 10-22 Dual Idler Weighbridge Dimensions 2130 mm (84.0 in) 4 x 20.6 x 25.4 mm Belt Travel FG ( .81 x 1.00 in) Slot 15.875 mm diameter (.625 in ) Mounting Holes (in bridge & trunnions) B C D A * * * * * * * -3 -2 -1 WI WI +1 +2 +3 A 165 mm (6.50 in) 216 mm (8.5 in) 152 mm (6.00 in) clearance required E *All idler spacings in scale area must be equal. D Ramsey Series 20 Dual Idler Belt Scale — Variable Belt Width Dimensions BELT LENGTH (in) BELT LENGTH (mm) WIDTH A B C D E F G WIDTH A B C D E F G 18 29.00 21.00 18.00 27.00 24.00 487 737 533 487 686 610 20 31.00 23.00 20.00 29.00 26.00 508 787 584 508 737 660 24 35.00 27.00 24.00 33.00 30.00 24.00 8.00 610 889 686 610 838 762 610 203 30 41.00 33.00 30.00 39.00 36.00 762 1041 838 762 991 914 36 47.00 39.00 36.00 45.00 42.00 914 1194 991 914 1143 1067 1067 1346 1143 1067 1295 1219 42 53.00 45.00 42.00 51.00 48.00 22.75 9.25 578 235 1219 1499 1295 1219 1448 1372 48 59.00 51.00 48.00 57.00 54.00 SpeciŢcations Ramsey Series 20 Belt Scale System SpeciŢcation Ramsey 10-20 and 10-22 Weighbridges Weigh Span One or two idler suspension; Weigh spans from 762 to 1829 mm (30 to 72 in) Weighbridge Design Unitized assembly consisting of pivoted weigh platform and one support beam that spans the conveyor stringer; Rugged one-piece design stiffens scale’s area of conveyor Weighbridge Construction Mechanical steel tubing; Conveyor sizes 457 to 1829 mm (18 to 72 in) or 400 to 2000 mm (15.75 to 78.74 in) belt widths as standard. Clearance Requirements Fits any standard conveyor; No space required above belt line. See plan view drawings for deck plate cutout dimensions. Load Cell Quantity 1 Enclosure Environmentally-protected “S” type cell Mounting Tension Excitation 10 VDC ±5% Output 3 mV/V ± 0.1% Non-Linearity < 0.03% FS Non-Repeatability 0.01% FS Hysteresis < 0.02% FS Operating Temperature -54°C to +93°C (-65°F to +200°F) Temperature Sensitivity Span 0.0014% FS/°C (0.0008% FS/°F); Zero 0.0027% FS/°C (0.0015% FS/°F) Overload Safe to 150% of load cell capacity; Ultimate to 300% FS; Sideload 50% FS Rating FM Approved for Class II, Div 1 & 2, Groups E, F & G; NTEP Type III, 5000 divisions; OIML R60 Ramsey 60-12 Digital Speed Sensor Type Digital, brushless Mounting Direct to 15.88 mm (0.625 in) diameter stub shaft on tail pulley, bend pulley, or return roll Housing Weather-tight, epoxy Ţnish, cast aluminum Mounting Hardware Supplied with coupling, restraint arm and restraint spring Shipping Weight 3.6 kg (8 lb) ©2004 Thermo Electron Corporation. All rights reserved. SpeciŢcations, terms and pricing are subject to change. 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