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Series RM Rate-Master® Flowmeter
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Polycarbonate, Gas Flow from .1-1800
SCFH, Water Flows to 10 GPM |
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The Dwyer Rate-Master® line
of direct reading precision flowmeters incorporates many unique
user features at moderate cost. These low cost flowmeters are
ideal for general use.
Easy to read design - The direct reading
scales eliminate troublesome conversions. The scales are brushed
aluminum, coated 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 - All Rate-Master® flowmeter
bodies are injection molded of tough, clear, shatter-proof polycarbonate
plastic around a precision tapered pin. The result is accurate
and repeatable 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. Precision metering valves
of brass or stainless steel (specify BV or SSV on order) are
available as an optional extra and permit precise flow adjustments.
For vacuum applications, Model RMA units are available with top
mounted valves (specify TMV). The small Series RMA models are
accurate within ±4% of full scale reading; Series RMB
within ±3%; large Series RMC within ±2%.
Installation is simple - The Rate-Master® can
be neatly through - panel mounted to keep flow tube centers in
the same plane as the panel surface or surface mounted on the
panel by means of tapped holes in the backbone. When through-panel
mounted, the bezel automatically positions the instrument at
the correct depth in the panel cutout. Surface mounted units
can also be held in place by the piping. All mounting hardware
plus installation and operating instructions are included.
Easy-to-Interchange bodies - Within a
given Series Rate-Master® flowmeter bodies can be instantly
interchanged. Simply "unplug" the body from backbone and replace
it with another. "O" rings provide a tight seal on inlet and
outlet. Piping remains undisturbed. Interchangeability is useful
where different scale ranges are sometimes required at the same
location in the laboratory or plant.
Cleaning is easy - To release the plastic
flowmeter body from the stainless steel backbone, just remove
four screws. Pipe thread flow connections remain undisturbed.
Remove the slide cover and the plug ball stop, clean the flow
tube with soap and water and reassemble. It’s that simple.
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Model RMA-SSV 2" scale, 4-13/16 high |
Model RMB-SSV 5" scale, 8-3/4" high |
Model RMC-SSV 10" scale, 15-3/8" high |
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SPECIFICATIONS |
Service: Compatible gases and liquids.
Wetted Materials: Body: Polycarbonate; O-ring: Neoprene & Buna-N;
Metal Parts: Stainless steel (except for optional brass valve); Float: Stainless
steel, black glass, aluminum, K monel, tungsten carbide depending on range.
Temperature Limit: 130°F (54°C).
Pressure Limit: 100 psi (6.9 bar).
Accuracy: RMA: 4%; RMB: 3%; RMC: 2% of full scale.
Process Connection: RMA: 1/8"; RMB: 1/4"; RMC: 1/2" female NPT.
Weight: RMA: 4 oz (113.4 g); RMB: 13 oz (368.5 g); RMC: 39 oz (1105.6
g).
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CAUTION |
Dwyer Rate-Master® flowmeters are designed to provide satisfactory
long term service when used with air, water, or other compatible
media. Refer to factory for information on questionable gases or
liquids. Caustic solutions, anti-freeze (ethylene glycol) and aromatic
solvents should definitely not be used. |
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OPTIONS: |
Top Mounted Metering Valves - Same
precision construction for vacuum applications RMA models only. |
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. |
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FEATURES: |
Specials - Special
ranges, scales, mounting arrangements, etc. are available on
special order, or in OEM quantities.
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AVAILABLE MODELS: |
Series RMA Rate-Master® Flowmeter (2" scale) |
Series RMA Rate-Master® Flowmeter (2" scale)
- Brass Valve |
Series RMA Rate-Master® Flowmeter (2" scale)
- Stainless Steel Valve |
Series RMA Rate-Master® Flowmeter (2" scale)
- Top Mounted Valve |
Series RMB Rate-Master® Flowmeter (5" scale) |
Series RMB Rate-Master® Flowmeter (5" scale)
- Brass Valve |
Series RMB Rate-Master® Flowmeter (5" scale)
- Stainless Steel Valve |
Series RMC Rate-Master® Flowmeter (10" scale) |
Series RMC Rate-Master® Flowmeter (10" scale)
- Brass Valve |
Series RMC Rate-Master® Flowmeter (10" scale) |
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Series RMA Rate-Master® Flowmeter (2" scale) |
Model
Number |
Range |
RMA-1 |
.05-.5 scfh
Air |
RMA-2 |
.1-1 scfh
Air |
RMA-3 |
.2-2 scfh
Air |
RMA-4 |
.5-5 scfh
Air |
RMA-5 |
1-10 scfh
Air |
RMA-6 |
2-20 scfh
Air |
RMA-7 |
5-50 scfh
Air |
RMA-8 |
10-100 scfh
Air |
RMA-9 |
15-150 scfh
Air |
RMA-10 |
20-200 scfh
Air |
RMA-151 |
5-50 cc/min
Air |
RMA-150 |
10-100 cc/min
Air |
RMA-11 |
30-240 cc/min
Air |
RMA-12 |
50-500 cc/min
Air |
RMA-13 |
100-1000 cc/min
Air |
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Model
Number |
Range |
RMA-14 |
200-2500 cc/min
Air |
RMA-26 |
.5-5 l/min
Air |
RMA-21 |
1-10 l/min
Air |
RMA-22 |
2-25 l/min
Air |
RMA-23 |
5-50 l/min
Air |
RMA-24 |
5-70 l/min
Air |
RMA-25 |
10-100 l/min
Air |
RMA-32 |
5-50 cc/min
Water |
RMA-33 |
10-110 cc/min
Water |
RMA-34 |
20-300 cc/min
Water |
RMA-42 |
1-11 GPH Water |
RMA-43 |
2-24 GPH Water |
RMA-44 |
4-34 GPH Water |
RMA-45 |
5-50 GPH Water |
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Return to Model Selection Menu |
Series RMA Rate-Master® Flowmeter (2" scale)
- Brass Valve |
Model
Number |
Range |
RMA-1-BV |
.05-.5 scfh Air |
RMA-2-BV |
.1-1 scfh Air |
RMA-3-BV |
.2-2 scfh Air |
RMA-4-BV |
.5-5 scfh Air |
RMA-5-BV |
1-10 scfh Air |
RMA-6-BV |
2-20 scfh Air |
RMA-7-BV |
5-50 scfh Air |
RMA-8-BV |
10-100 scfh Air |
RMA-9-BV |
15-150 scfh Air |
RMA-10-BV |
20-200 scfh Air |
RMA-151-BV |
5-50 cc/min Air |
RMA-150-BV |
10-100 cc/min Air |
RMA-11-BV |
30-240 cc/min Air |
RMA-12-BV |
50-500 cc/min Air |
RMA-13-BV |
100-1000 cc/min Air |
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Model
Number |
Range |
RMA-14-BV |
200-2500 cc/min Air |
RMA-26-BV |
.5-5 l/min Air |
RMA-21-BV |
1-10 l/min Air |
RMA-22-BV |
2-25 l/min Air |
RMA-23-BV |
5-50 l/min Air |
RMA-24-BV |
5-70 l/min Air |
RMA-25-BV |
10-100 l/min Air |
RMA-32-BV |
5-50 cc/min Water |
RMA-33-BV |
10-110 cc/min Water |
RMA-34-BV |
20-300 cc/min Water |
RMA-42-BV |
1-11 GPH Water |
RMA-43-BV |
2-24 GPH Water |
RMA-44-BV |
4-34 GPH Water |
RMA-45-BV |
5-50 GPH Water |
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Return to Model Selection
Menu |
Series RMA Rate-Master® Flowmeter (2" scale)
- Stainless Steel Valve |
Model
Number |
Range |
RMA-1-SSV |
.05-.5 scfh Air |
RMA-2-SSV |
.1-1 scfh Air |
RMA-3-SSV |
.2-2 scfh Air |
RMA-4-SSV |
.5-5 scfh Air |
RMA-5-SSV |
1-10 scfh Air |
RMA-6-SSV |
2-20 scfh Air |
RMA-7-SSV |
5-50 scfh Air |
RMA-8-SSV |
10-100 scfh Air |
RMA-9-SSV |
15-150 scfh Air |
RMA-10-SSV |
20-200 scfh Air |
RMA-151-SSV |
5-50 cc/min Air |
RMA-150-SSV |
10-100 cc/min Air |
RMA-11-SSV |
30-240 cc/min Air |
RMA-12-SSV |
50-500 cc/min Air |
RMA-13-SSV |
100-1000 cc/min Air |
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Model
Number |
Range |
RMA-14-SSV |
200-2500 cc/min Air |
RMA-26-SSV |
.5-5 l/min Air |
RMA-21-SSV |
1-10 l/min Air |
RMA-22-SSV |
2-25 l/min Air |
RMA-23-SSV |
5-50 l/min Air |
RMA-24-SSV |
5-70 l/min Air |
RMA-25-SSV |
10-100 l/min Air |
RMA-32-SSV |
5-50 cc/min Water |
RMA-33-SSV |
10-110 cc/min Water |
RMA-34-SSV |
20-300 cc/min Water |
RMA-42-SSV |
1-11 GPH Water |
RMA-43-SSV |
2-24 GPH Water |
RMA-44-SSV |
4-34 GPH Water |
RMA-45-SSV |
5-50 GPH Water |
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Return to Model Selection
Menu |
Series RMA Rate-Master® Flowmeter (2" scale)
- Top Mounted Valve |
Model
Number |
Range |
RMA-1-TMV |
.05-.5 scfh Air |
RMA-2-TMV |
.1-1 scfh Air |
RMA-3-TMV |
.2-2 scfh Air |
RMA-4-TMV |
.5-5 scfh Air |
RMA-5-TMV |
1-10 scfh Air |
RMA-6-TMV |
2-20 scfh Air |
RMA-7-TMV |
5-50 scfh Air |
RMA-8-TMV |
10-100 scfh Air |
RMA-9-TMV |
15-150 scfh Air |
RMA-10-TMV |
20-200 scfh Air |
RMA-151-TMV |
5-50 cc/min Air |
RMA-150-TMV |
10-100 cc/min Air |
RMA-11-TMV |
30-240 cc/min Air |
RMA-12-TMV |
50-500 cc/min Air |
RMA-13-TMV |
100-1000 cc/min Air |
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Model
Number |
Range |
RMA-14-TMV |
200-2500 cc/min Air |
RMA-26-TMV |
.5-5 l/min Air |
RMA-21-TMV |
1-10 l/min Air |
RMA-22-TMV |
2-25 l/min Air |
RMA-23-TMV |
5-50 l/min Air |
RMA-24-TMV |
5-70 l/min Air |
RMA-25-TMV |
10-100 l/min Air |
RMA-32-TMV |
5-50 cc/min Water |
RMA-33-TMV |
10-110 cc/min Water |
RMA-34-TMV |
20-300 cc/min Water |
RMA-42-TMV |
1-11 GPH Water |
RMA-43-TMV |
2-24 GPH Water |
RMA-44-TMV |
4-34 GPH Water |
RMA-45-TMV |
5-50 GPH Water |
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Return to Model Selection
Menu |
Series RMB Rate-Master® Flowmeter (5" scale) |
Model
Number |
Range |
RMB-49 |
.5-5 scfh Air |
RMB-50 |
1-10 scfh Air |
RMB-51 |
2-20 scfh Air |
RMB-52 |
5-50 scfh Air |
RMB-53 |
10-100 scfh Air |
RMB-54 |
20-200 scfh Air |
RMB-55 |
40-400 scfh Air |
RMB-56 |
50-500 scfh Air |
RMB-57 |
60-600 scfh Air |
RMB-82 |
1-12 GPH Water |
RMB-83 |
1-20 GPH Water |
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Model
Number |
Range |
RMB-84 |
4-40 GPH Water |
RMB-85 |
10-100 GPH Water |
RMB-50D |
1.2-10 scfh/0.6-5 l/min
Air |
RMB-51D |
3-20 scfh/1.5-9.5 l/min
Air |
RMB-52D |
4-50 scfh/2-23 l/min Air |
RMB-53D |
60-100 scfh/5-50 l/min
Air |
RMB-54D |
20-200 scfh/5-95 l/min
Air |
RMB-82D |
1-12 GPH/0.06-0.76 l/min
Water |
RMB-83D |
1-20 GPH/0.065-1.25 l/min
Water |
RMB-85D |
10-100 GPH/0.8-6.2 l/min
Water |
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Return to Model Selection
Menu |
Series RMB Rate-Master® Flowmeter (5" scale)
- Brass Valve |
Model
Number |
Range |
RMB-49-BV |
.5-5 scfh Air |
RMB-50-BV |
1-10 scfh Air |
RMB-51-BV |
2-20 scfh Air |
RMB-52-BV |
5-50 scfh Air |
RMB-53-BV |
10-100 scfh Air |
RMB-54-BV |
20-200 scfh Air |
RMB-55-BV |
40-400 scfh Air |
RMB-56-BV |
50-500 scfh Air |
RMB-57-BV |
60-600 scfh Air |
RMB-82-BV |
1-12 GPH Water |
RMB-83-BV |
1-20 GPH Water |
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Model
Number |
Range |
RMB-84-BV |
4-40 GPH Water |
RMB-85-BV |
10-100 GPH Water |
RMB-50D-BV |
1.2-10 scfh/0.6-5 l/min
Air |
RMB-51D-BV |
3-20 scfh/1.5-9.5 l/min
Air |
RMB-52D-BV |
4-50 scfh/2-23 l/min Air |
RMB-53D-BV |
60-100 scfh/5-50 l/min
Air |
RMB-54D-BV |
20-200 scfh/5-95 l/min
Air |
RMB-82D-BV |
1-12 GPH/0.06-0.76 l/min
Water |
RMB-83D-BV |
1-20 GPH/0.065-1.25 l/min
Water |
RMB-85D-BV |
10-100 GPH/0.8-6.2 l/min
Water |
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Return to Model Selection
Menu |
Series RMB Rate-Master® Flowmeter (5" scale)
- Stainless Steel Valve |
Model
Number |
Range |
RMB-49-SSV |
.5-5 scfh Air |
RMB-50-SSV |
1-10 scfh Air |
RMB-51-SSV |
2-20 scfh Air |
RMB-52-SSV |
5-50 scfh Air |
RMB-53-SSV |
10-100 scfh Air |
RMB-54-SSV |
20-200 scfh Air |
RMB-55-SSV |
40-400 scfh Air |
RMB-56-SSV |
50-500 scfh Air |
RMB-57-SSV |
60-600 scfh Air |
RMB-82-SSV |
1-12 GPH Water |
RMB-83-SSV |
1-20 GPH Water |
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Model
Number |
Range |
RMB-84-SSV |
4-40 GPH Water |
RMB-85-SSV |
10-100 GPH Water |
RMB-50D-SSV |
1.2-10 scfh/0.6-5 l/min
Air |
RMB-51D-SSV |
3-20 scfh/1.5-9.5 l/min
Air |
RMB-52D-SSV |
4-50 scfh/2-23 l/min Air |
RMB-53D-SSV |
60-100 scfh/5-50 l/min
Air |
RMB-54D-SSV |
20-200 scfh/5-95 l/min
Air |
RMB-82D-SSV |
1-12 GPH/0.06-0.76 l/min
Water |
RMB-83D-SSV |
1-20 GPH/0.065-1.25 l/min
Water |
RMB-85D-SSV |
10-100 GPH/0.8-6.2 l/min
Water |
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Return to Model Selection
Menu |
Series RMC Rate-Master® Flowmeter (10" scale) |
Model
Number |
Range |
RMC-101 |
5-50 scfh Air |
RMC-102 |
10-100 scfh Air |
RMC-103 |
20-200 scfh Air |
RMC-104 |
40-400 scfh Air |
RMC-105 |
60-600 scfh Air |
RMC-106 |
100-1000 scfh Air |
RMC-107 |
120-1200 scfh Air |
RMC-108 |
180-1800 scfh Air |
RMC-121 |
1-10 scfm Air |
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Model
Number |
Range |
RMC-122 |
2-20 scfm Air |
RMC-123 |
3-30 scfm Air |
RMC-134 |
2-20 GPH Water |
RMC-135 |
8-90 GPH Water |
RMC-141 |
.1-1 GPM Water |
RMC-142 |
.2-2.2 GPM Water |
RMC-143 |
.4-4 GPM Water |
RMC-144 |
.8-7 GPM Water |
RMC-145 |
1.2-10 GPM Water |
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Return to Model Selection
Menu |
Series RMC Rate-Master® Flowmeter (10" scale)
- Brass Valve |
Model
Number |
Range |
RMC-101-BV |
5-50 scfh Air |
RMC-102-BV |
10-100 scfh Air |
RMC-103-BV |
20-200 scfh Air |
RMC-104-BV |
40-400 scfh Air |
RMC-105-BV |
60-600 scfh Air |
RMC-106-BV |
100-1000 scfh Air |
RMC-107-BV |
120-1200 scfh Air |
RMC-108-BV |
180-1800 scfh Air |
RMC-121-BV |
1-10 scfm Air |
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Model
Number |
Range |
RMC-122-BV |
2-20 scfm Air |
RMC-123-BV |
3-30 scfm Air |
RMC-134-BV |
2-20 GPH Water |
RMC-135-BV |
8-90 GPH Water |
RMC-141-BV |
.1-1 GPM Water |
RMC-142-BV |
.2-2.2 GPM Water |
RMC-143-BV |
.4-4 GPM Water |
RMC-144-BV |
.8-7 GPM Water |
RMC-145-BV |
1.2-10 GPM Water |
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Return to Model Selection
Menu |
Series RMC Rate-Master® Flowmeter (10" scale) |
Model
Number |
Range |
RMC-101-SSV |
5-50 scfh Air |
RMC-102-SSV |
10-100 scfh Air |
RMC-103-SSV |
20-200 scfh Air |
RMC-104-SSV |
40-400 scfh Air |
RMC-105-SSV |
60-600 scfh Air |
RMC-106-SSV |
100-1000 scfh Air |
RMC-107-SSV |
120-1200 scfh Air |
RMC-108-SSV |
180-1800 scfh Air |
RMC-121-SSV |
1-10 scfm Air |
RMC-122-SSV |
2-20 scfm Air |
RMC-123-SSV |
3-30 scfm Air |
RMC-134-SSV |
2-20 GPH Water |
RMC-135-SSV |
8-90 GPH Water |
RMC-141-SSV |
.1-1 GPM Water |
RMC-142-SSV |
.2-2.2 GPM Water |
RMC-143-SSV |
.4-4 GPM Water |
RMC-144-SSV |
.8-7 GPM Water |
RMC-145-SSV |
1.2-10 GPM Water |
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Model
Number |
Range |
RMC-101-SSV |
5-50 scfh Air |
RMC-102-SSV |
10-100 scfh Air |
RMC-103-SSV |
20-200 scfh Air |
RMC-104-SSV |
40-400 scfh Air |
RMC-105-SSV |
60-600 scfh Air |
RMC-106-SSV |
100-1000 scfh Air |
RMC-107-SSV |
120-1200 scfh Air |
RMC-108-SSV |
180-1800 scfh Air |
RMC-121-SSV |
1-10 scfm Air |
RMC-122-SSV |
2-20 scfm Air |
RMC-123-SSV |
3-30 scfm Air |
RMC-134-SSV |
2-20 GPH Water |
RMC-135-SSV |
8-90 GPH Water |
RMC-141-SSV |
.1-1 GPM Water |
RMC-142-SSV |
.2-2.2 GPM Water |
RMC-143-SSV |
.4-4 GPM Water |
RMC-144-SSV |
.8-7 GPM Water |
RMC-145-SSV |
1.2-10 GPM Water |
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