pg144 7/28/05 1:43 PM Page 1 ® Series RM Rate-Master Flowmeters Polycarbonate, Gas Flow from .1-1800 SCFH, Water Flows to 10 GPM J F BACK WIDTH A K C B E D I G L FULL OPEN H DIMENSION IN INCHES Model RMA Model RMB Model RMC 9 1 1 A 4 ⁄16 8 ⁄2 15 ⁄8 7 1 B 3 6 ⁄16 12 ⁄4 1 1 1 ⁄8 NPT Conn. ⁄4 NPT Conn. ⁄2 NPT Conn. 5 15 3 C 1 ⁄8 3 ⁄16 8 ⁄4 1 3 10-32 Thds. ⁄4-20 Thds. ⁄8-24 Thds. 3 5 D ⁄8 ⁄8 1 1 7 3 E 1 ⁄16 1 ⁄8 2 ⁄4 3 3 1 F 1 ⁄16 1 ⁄4 2 ⁄4 3 7 G ⁄4 1 1 ⁄16 7 31 H 1 1 ⁄16 1 ⁄32 3 13 1 I 1 ⁄8 1 ⁄16 2 ⁄2 (OPEN) (BV or SSV MODELS ONLY) 3 1 J ⁄4 2 1 ⁄4 Model RMC-SSV10" Model RMB-SSV 5" Model RMA-SSV 2" 13 3 3 K 15 ⁄8 3 3 13 4 ⁄16 8 ⁄4 scale, 15 ⁄8" high scale, 8 ⁄4" high scale, 4 ⁄16" high 1 1 L 2 ⁄4 1 1 ⁄2 ® ® The Dwyer Rate-Master line of direct reading precision flowmeters Installation is simple — The Rate-Master can be neatly panel mounted incorporates many unique user features at moderate cost. These low cost to keep flow tube centers in the same plane as the panel surface or sur- flowmeters are ideal for general use. face mounted on the panel by means of tapped holes in the backbone. When through-panel mounted, the bezel automatically positions the in- Easy to read design — The direct reading scales eliminate troublesome strument at the correct depth in the panel cutout. Surface mounted units conversions. The scales are brushed aluminum, coated with epoxy and can also be held in place by the piping. All mounting hardware plus in- the graduations are on both sides of the indicating tube. Special integral stallation and operating instructions are included. flow guides stabilize the float throughout the range to keep it from hunt- ing or wandering in the bore. The float is highly visible against a white ® Easy-to-Interchange bodies — Within a given Series Rate-Master background. flowmeter bodies can be instantly interchanged. Simply “unplug” the body from backbone and replace it with another. “O” rings provide a tight ® Construction assures accuracy — All Rate-Master flowmeter bodies seal on inlet and outlet. Piping remains undisturbed. Interchangeability are injection molded of tough, clear, shatter-proof polycarbonate plastic is useful where different scale ranges are sometimes required at the same around a precision tapered pin. The result is accurate and repeatable location in the laboratory or plant. readings. The single piece plastic body is mounted to a stainless steel back bone into which pipe thread inserts are welded to absorb piping torque. Cleaning is easy — To release the plastic flowmeter body from the Precision metering valves of brass or stainless steel (specify BV or SSV stainless steel backbone, just remove four screws. Pipe thread flow con- on order) are available as an optional extra and permit precise flow ad- nections remain undisturbed. Remove the slide cover and the plug ball justments. For vacuum applications, Model RMA units are available with stop, clean the flow tube with soap and water and reassemble. It’s that top mounted valves (specify TMV). The small Series RMA models are ac- simple. curate within ±4% of full scale reading; Series RMB within ±3%; large Se- ries RMC within ±2%. VISIT OUR WEBSITES: www.dwyer-inst.com • www.dwyer-inst.co.uk • www.dwyer-inst.com.au 144 Flow Flow pg145 7/28/05 4:14 PM Page 1 SPECIFICATIONS How To Order Service: Compatible gases and liquids. Series-Range No.-Valve-Option Wetted Materials: Body: Polycarbonate Example: RMA-2-SSV Series RMA with .1-1 SCFH Air Range & Stainless Steel Valve O-ring: Neoprene & Buna-N. Metal Parts: Stainless Steel (except for optional brass valve). Float: Stainless steel, black glass, aluminum, K monel, tung- sten carbide depending on range. Model RMA Temperature Limit: 130°F (54°C). RMA-X, Standard RMA Pressure Limit: 100 psi (6.9 bar). RMA-X-BV, RMA with Brass Valve Accuracy: RMA: 4%, RMB: 3%, RMC: 2% of full scale. RMA-X-SSV, RMA with Stainless Steel Valve Process Connection: RMA: 1/8˝, RMB: 1/4˝, RMA-X-TMV, RMA with Top Mounted Valve RMC: 1/2˝ female NPT. Weight: RMA: 4 oz (113.4 g), RMB: 13 oz (368.5 g), Model RMB RMC: 39 oz (1105.6 g). RMB-X, Standard RMB RMB-X-BV, RMB with Brass Valve RMB-X-SSV, RMB with Stainless Steel Valve CAUTION Model RMC ® Dwyer Rate-Master flowmeters are designed to provide satisfac- RMC-X, Standard RMC tory long term service when used with air, water, or other compat- ible media. Refer to factory for information on questionable gases RMC-X-BV, RMC with Brass Valve or liquids. Caustic solutions, anti-freeze (ethylene glycol) and aro- RMC-X-SSV, RMA with Stainless Steel Valve matic solvents should definitely not be used. OPTIONS & ACCESSORIES Adjustable pointer flags – Red lined pointer flags provide quick visual reference to a required flow level. Of clear plastic, they snap into place inside bezel and slide to desired level. POPULAR RANGES Model RMA-2" Scale Model RMB-5" Scale Model RMC -10" Scale Range Range Range Range Range Range SCFH Air No. SCFH Air No. SCFH Air No. .05-.5 1 .5-5 49 5-50 101 .1-1 2 1-10 50 10-100 102 Top Mounted Metering Valves – Same precision .2-2 3 3-20 51 20-200 103 construction for vacuum applications. RMA mod- .5-5 4 4-50 52 40-400 104 els only. 1-10 5 10-100 53 60-600 105 2-20 6 20-200 54 100-1000 106 5-50 7 40-400 55 120-1200 107 10-100 8 50-500 56 200-1800 108 15-150 9 60-600 57 SCFM Air 20-200 10 Gal. Water 1-10 121 per hour CC Air/min. 2-20 122 Specials — Special ranges, scales, mounting 5-50 151* 1-12 82 4-30 123 arrangements, etc., are available on special order, 10-100 150* 1-20 83 or in OEM quantities. 30-240 11 4-40 84 Gal. Water per hour 50-500 12 10-100 85 100-1000 13 SCFH & LPM Air 2-20 134 200-2500 14 1.2-10/0.6-5 50D 8-90 135 LPM Air 3-20/1.5-9.5 51D Gal.Water per minute .5-5 26 4-50/2-23 52D 1-10 21 10-100/5-50 53D .1-1 141 2-25 22 20-200/5-95 54D .2-2.2 142 5-50 23 GPH & LPM Water .4-4 143 5-70 24 1-12/0.06-0.76 82D .8-7 144 RMA-X-APF, Adjustable Pointer Flag for RMA Series 10-100 25 1-20/0.065-1.25 83D 1.2-10 145 RMB-X-BPF, Adjustable Pointer Flag for RMB Series CC Water/min. 10-100/0.8-6.2 85D 5-50 32 RMC-X-CPF, Adjustable Pointer Flag for RMC Series 10-110 33 20-300 34 Gal.Water/hr RKA, Regulator Kit for RMA Series 1-11 42 RK-RMB, Regulator Kit for RMB Series 2-24 43 4-34 44 5-50 45 *Accuracy ±8% CALL TO ORDER: U.S. Phone 219 879-8000 • U.K. Phone (+44) (0)1494-461707 • Asia Pacific Phone 61 2 4272-2055 145