John Sherman Agenices Ltd.
Specifications
Part Numbers
Contact Us
Return to Flowmeter Index
Return to Sherman Homepage
Dwyer Instruments Inc

Series RM Rate-Master® Flowmeters
Rate-Master Flowmeters
  • Molded of Tough Polycarbonate Plastic
  • Indicate and Manually Control Air Flows from 0.1 to 1800 SCFH
  • Indicate and Manually Control Water Flows up to 10 USGPM

    •  

     

    Easy to read design- The direct reading scales eliminate troublesome conversions. The scales are brushed aluminum, coasted with epoxy and the graduations are on both sides of the indicating tube. Special integral flow guides stabilize the float throughout the range to keep it from hunting or wandering in the bore. The float is highly visible against a white background.

    Construction assures accuracy-Critical internal diameter of the variable orifice tube is held within +/-0.0004". The result is accurate and reatable readings. The series RMA models are accurate within +/-4%; Series RMB with +/-3% and the Series RMC within +/-2%.

    Choose from a variety of sizes- The compact RMA series offers a 2" long scale and 1/8"NPT connections. The mid-size RMB offers a 5" scale and 1/4"NPT connections. The large RMC series has a 10" scale and 1/2"NPT connections. All units come standard with chrome plated brass connections, with stainless steel being an option. All units may be ordered with no valve or a choice of an integral brass or stainless steel needle valve. 

    Specifications

    Meter Body, Bezel and Tube: Polycarbonate
    Wetted Metal Parts: Stainless Steel (except for optional brass valves)
    Floats: Stainless Steel; Black Glass; Aluminum; K Monel; Tungsten Carbide (dependant upon range)
    Float Stops: Polycarbonate
    Pipe Connections: RMA: 1/8" FNPT
    RMB: 1/4" FNPT
    RMC: 1/2" FNPT
    "O" Rings: Neoprene and Buna N
    Fittings: Stainless steel brazed to stainless steel back bone plate
    Rivets: Stainless steel, set into slots
    Scale: Brushed aluminum; clear epoxy coated
    Adjustment Knob: ABS Plastic
    Pressure Rating: RMA: 100 PSI
    RMB: 70 PSI (100 PSI Optional)
    RMC: 35 PSI (100 PSI Optional)
    Temperature Rating: 130°F (54°C) Maximum
    Accuracy: RMA: ±4% (range 150 and 151: ±8%) of full scale
    RMB: ±3% of full scale
    RMC: ±2% of full scale

    Ranges/Part Numbers

    Series RMA

    Part Number: "RMA-range number-options"
    Range
    SCFH Air    		 Range Number
    .05-.5 1
    .1-1 2
    .2-2 3
    .5-5 4
    1-10 5
    2-20 6
    5-50 7
    10-100 8
    15-150 9
    20-200 10
    Range
    cc(ml)/min Air    		 Range Number
    5-50 151
    10-100 150
    30-240 11
    50-500 12
    100-1000 13
    200-2500 14
    Range
    l/min Air    		 Range Number
    .5-5 26
    1-10 21
    2-25 22
    5-50 23
    5-70 24
    10-100 25
    Range
    cc(ml)/min Water    		 Range Number
    5-50 32
    10-110 33
    20-300 34
    Range
    U.S. GPH Water    		 Range Number
    1-11 42
    2-24 43
    4-34 44
    5-50 45

    Series RMB

    Part Number: "RMB-range number-options"
    Range
    SCFH Air    		 Range Number
    .5-5 49
    1-10 50
    2-20 51
    5-50 52
    10-100 53
    20-200 54
    40-400 55
    50-500 56
    60-600 57
    Range
    U.S. GPH Water    		 Range Number
    1-12 82
    1-20 83
    4-40 84
    10-100 85
    Dual Scale Range
    SCFH & l/min Air    		 Range Number
    1.2-10 & 0.6-5 50D
    3-20 & 1.5-9.5 51D
    4-50 & 2-23 52D
    60-100 & 5-50 53D
    20-200 & 5-95 54D
    Dual Scale Range
    U.S. GPH & l/m Water    		 Range Number
    1-12 & 0.06-0.76 82D
    1-20 & 0.065-1.25 83D
    10-100 & 0.8-6.2 85D

    Series RMC

    Part Number: "RMC-range number-option"
    Range
    SCFH Air    		 Range Number
    5-50 101
    10-100 102
    20-200 103
    40-400 104
    60-600 105
    100-1000 106
    120-1200 107
    180-1800 108
    Range
    SCFM Air    		 Range Number
    1-10 121
    2-20 122
    3-30 123
    Range
    U.S. GPH Water    		 Range Number
    2-20 134
    8-90 135
    Range
    U.S. GPM Water    		 Range Number
    .1-1 141
    .2-2.2 142
    .4-4 143
    .8-7 144
    1.2-10 145

    Options
    Description Option
    Code
    RMA Adjustable Pointer Flag -APF
    RMB Adjustable Pointer Flag -BPF
    RMC Adjustable Pointer Flag -CPF
    Stainless Steel Valve -SSV
    Brass Valve -BV
    Top Mounted Valve (Stainless Steel RMA series for air only, for vacuum applications) -TMV
    100 PSI Option (RMB, RMC only) -PSI
    Viton "O" Rings -VIT
    Rate-Master Flowmeter Dimensions
    Rate Master Flowmeter Dimensions
    Click here for full size drawing & Dimensions

    Contact Us!

    Contact Us!

    John Sherman Agencies Ltd.
    1641 Venables Street
    Vancouver, British Columbia, Canada
    V5L 2H1

    Phone: 604-254-9622
    Fax: 604-254-3123

    e-mail: info@johnsherman.com
     
     
     
     

    Back to top of page