Rate-Master® Flowmeter

Rate-Master® Flowmeter
Description:

Dwyer Series RM Rate-Master® Flowmeter

Polycarbonate, Gas Flow from .1-1800 SCFH, Water Flows to 10 GPM  

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 use to measure flow of air & water as well as other compatible gases& fluids. We can provide a suitable pressure regulator for these Dwyer flowmeters.

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.

 
Model RMA-SSV 2" scale, 4-13/16 highModel RMB-SSV 5" scale, 8-3/4" highModel RMC-SSV 10" scale, 15-3/8" high

Flowmeter 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).

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.   

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.   

Flow meter FEATURES:

Specials - Special ranges, scales, mounting arrangements, etc. are available on special order, or in OEM quantities.

  AVAILABLE RMA flowmeter MODELS: 

 Series RMA Rate-Master® Flowmeter (2" scale)
Model NumberRange
 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-51-10 scfh Air
 RMA-62-20 scfh Air
 RMA-75-50 scfh Air
 RMA-810-100 scfh Air
 RMA-915-150 scfh Air
 RMA-1020-200 scfh Air
 RMA-1515-50 cc/min Air
 RMA-15010-100 cc/min Air
 RMA-1130-240 cc/min Air
 RMA-1250-500 cc/min Air
 RMA-13100-1000 cc/min Air
Model NumberRange
 RMA-14200-2500 cc/min Air
 RMA-26.5-5 l/min Air
 RMA-211-10 l/min Air
 RMA-222-25 l/min Air
 RMA-235-50 l/min Air
 RMA-245-70 l/min Air
 RMA-2510-100 l/min Air
 RMA-325-50 cc/min Water
 RMA-3310-110 cc/min Water
 RMA-3420-300 cc/min Water
 RMA-421-11 GPH Water
 RMA-432-24 GPH Water
 RMA-444-34 GPH Water
 RMA-455-50 GPH Water
Series RMA Rate-Master® Flowmeter (2" scale) - Brass Valve
Model NumberRange
 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-BV1-10 scfh Air
 RMA-6-BV2-20 scfh Air
 RMA-7-BV5-50 scfh Air
 RMA-8-BV10-100 scfh Air
 RMA-9-BV15-150 scfh Air
 RMA-10-BV20-200 scfh Air
 RMA-151-BV5-50 cc/min Air
 RMA-150-BV10-100 cc/min Air
 RMA-11-BV30-240 cc/min Air
 RMA-12-BV50-500 cc/min Air
 RMA-13-BV100-1000 cc/min Air
Model NumberRange
 RMA-14-BV200-2500 cc/min Air
 RMA-26-BV.5-5 l/min Air
 RMA-21-BV1-10 l/min Air
 RMA-22-BV2-25 l/min Air
 RMA-23-BV5-50 l/min Air
 RMA-24-BV5-70 l/min Air
 RMA-25-BV10-100 l/min Air
 RMA-32-BV5-50 cc/min Water
 RMA-33-BV10-110 cc/min Water
 RMA-34-BV20-300 cc/min Water
 RMA-42-BV1-11 GPH Water
 RMA-43-BV2-24 GPH Water
 RMA-44-BV4-34 GPH Water
 RMA-45-BV5-50 GPH Water
Series RMA Rate-Master® Flowmeter (2" scale) - Stainless Steel Valve
Model NumberRange
 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-SSV1-10 scfh Air
 RMA-6-SSV2-20 scfh Air
 RMA-7-SSV5-50 scfh Air
 RMA-8-SSV10-100 scfh Air
 RMA-9-SSV15-150 scfh Air
 RMA-10-SSV20-200 scfh Air
 RMA-151-SSV5-50 cc/min Air
 RMA-150-SSV10-100 cc/min Air
 RMA-11-SSV30-240 cc/min Air
 RMA-12-SSV50-500 cc/min Air
 RMA-13-SSV100-1000 cc/min Air
Model NumberRange
 RMA-14-SSV200-2500 cc/min Air
 RMA-26-SSV.5-5 l/min Air
 RMA-21-SSV1-10 l/min Air
 RMA-22-SSV2-25 l/min Air
 RMA-23-SSV5-50 l/min Air
 RMA-24-SSV5-70 l/min Air
 RMA-25-SSV10-100 l/min Air
 RMA-32-SSV5-50 cc/min Water
 RMA-33-SSV10-110 cc/min Water
 RMA-34-SSV20-300 cc/min Water
 RMA-42-SSV1-11 GPH Water
 RMA-43-SSV2-24 GPH Water
 RMA-44-SSV4-34 GPH Water
 RMA-45-SSV5-50 GPH Water
Series RMA Rate-Master® Flowmeter (2" scale) - Top Mounted Valve
Model NumberRange
 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-TMV1-10 scfh Air
 RMA-6-TMV2-20 scfh Air
 RMA-7-TMV5-50 scfh Air
 RMA-8-TMV10-100 scfh Air
 RMA-9-TMV15-150 scfh Air
 RMA-10-TMV20-200 scfh Air
 RMA-151-TMV5-50 cc/min Air
 RMA-150-TMV10-100 cc/min Air
 RMA-11-TMV30-240 cc/min Air
 RMA-12-TMV50-500 cc/min Air
 RMA-13-TMV100-1000 cc/min Air
Model NumberRange
 RMA-14-TMV200-2500 cc/min Air
 RMA-26-TMV.5-5 l/min Air
 RMA-21-TMV1-10 l/min Air
 RMA-22-TMV2-25 l/min Air
 RMA-23-TMV5-50 l/min Air
 RMA-24-TMV5-70 l/min Air
 RMA-25-TMV10-100 l/min Air
 RMA-32-TMV5-50 cc/min Water
 RMA-33-TMV10-110 cc/min Water
 RMA-34-TMV20-300 cc/min Water
 RMA-42-TMV1-11 GPH Water
 RMA-43-TMV2-24 GPH Water
 RMA-44-TMV4-34 GPH Water
 RMA-45-TMV5-50 GPH Water
Series RMB Rate-Master® Flowmeter (5" scale)
Model NumberRange
 RMB-49.5-5 scfh Air
 RMB-501-10 scfh Air
 RMB-512-20 scfh Air
 RMB-525-50 scfh Air
 RMB-5310-100 scfh Air
 RMB-5420-200 scfh Air
 RMB-5540-400 scfh Air
 RMB-5650-500 scfh Air
 RMB-5760-600 scfh Air
 RMB-821-12 GPH Water
 RMB-831-20 GPH Water
Model NumberRange
 RMB-844-40 GPH Water
 RMB-8510-100 GPH Water
 RMB-50D1.2-10 scfh/0.6-5 l/min Air
 RMB-51D3-20 scfh/1.5-9.5 l/min Air
 RMB-52D4-50 scfh/2-23 l/min Air
 RMB-53D60-100 scfh/5-50 l/min Air
 RMB-54D20-200 scfh/5-95 l/min Air
 RMB-82D1-12 GPH/0.06-0.76 l/min Water
 RMB-83D1-20 GPH/0.065-1.25 l/min Water
 RMB-85D10-100 GPH/0.8-6.2 l/min Water
Series RMB Rate-Master® Flowmeter (5" scale) - Brass Valve
Model NumberRange
 RMB-49-BV.5-5 scfh Air
 RMB-50-BV1-10 scfh Air
 RMB-51-BV2-20 scfh Air
 RMB-52-BV5-50 scfh Air
 RMB-53-BV10-100 scfh Air
 RMB-54-BV20-200 scfh Air
 RMB-55-BV40-400 scfh Air
 RMB-56-BV50-500 scfh Air
 RMB-57-BV60-600 scfh Air
 RMB-82-BV1-12 GPH Water
 RMB-83-BV1-20 GPH Water
Model NumberRange
 RMB-84-BV4-40 GPH Water
 RMB-85-BV10-100 GPH Water
 RMB-50D-BV1.2-10 scfh/0.6-5 l/min Air
 RMB-51D-BV3-20 scfh/1.5-9.5 l/min Air
 RMB-52D-BV4-50 scfh/2-23 l/min Air
 RMB-53D-BV60-100 scfh/5-50 l/min Air
 RMB-54D-BV20-200 scfh/5-95 l/min Air
 RMB-82D-BV1-12 GPH/0.06-0.76 l/min Water
 RMB-83D-BV1-20 GPH/0.065-1.25 l/min Water
 RMB-85D-BV10-100 GPH/0.8-6.2 l/min Water
Series RMB Rate-Master® Flowmeter (5" scale) - Stainless Steel Valve
Model NumberRange
 RMB-49-SSV.5-5 scfh Air
 RMB-50-SSV1-10 scfh Air
 RMB-51-SSV2-20 scfh Air
 RMB-52-SSV5-50 scfh Air
 RMB-53-SSV10-100 scfh Air
 RMB-54-SSV20-200 scfh Air
 RMB-55-SSV40-400 scfh Air
 RMB-56-SSV50-500 scfh Air
 RMB-57-SSV60-600 scfh Air
 RMB-82-SSV1-12 GPH Water
 RMB-83-SSV1-20 GPH Water
Model NumberRange
 RMB-84-SSV4-40 GPH Water
 RMB-85-SSV10-100 GPH Water
 RMB-50D-SSV1.2-10 scfh/0.6-5 l/min Air
 RMB-51D-SSV3-20 scfh/1.5-9.5 l/min Air
 RMB-52D-SSV4-50 scfh/2-23 l/min Air
 RMB-53D-SSV60-100 scfh/5-50 l/min Air
 RMB-54D-SSV20-200 scfh/5-95 l/min Air
 RMB-82D-SSV1-12 GPH/0.06-0.76 l/min Water
 RMB-83D-SSV1-20 GPH/0.065-1.25 l/min Water
 RMB-85D-SSV10-100 GPH/0.8-6.2 l/min Water
Series RMC Rate-Master® Flowmeter (10" scale)
Model NumberRange
 RMC-1015-50 scfh Air
 RMC-10210-100 scfh Air
 RMC-10320-200 scfh Air
 RMC-10440-400 scfh Air
 RMC-10560-600 scfh Air
 RMC-106100-1000 scfh Air
 RMC-107120-1200 scfh Air
 RMC-108180-1800 scfh Air
 RMC-1211-10 scfm Air
Model NumberRange
 RMC-1222-20 scfm Air
 RMC-1233-30 scfm Air
 RMC-1342-20 GPH Water
 RMC-1358-90 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-1451.2-10 GPM Water
Series RMC Rate-Master® Flowmeter (10" scale) - Brass Valve
Model NumberRange
 RMC-101-BV5-50 scfh Air
 RMC-102-BV10-100 scfh Air
 RMC-103-BV20-200 scfh Air
 RMC-104-BV40-400 scfh Air
 RMC-105-BV60-600 scfh Air
 RMC-106-BV100-1000 scfh Air
 RMC-107-BV120-1200 scfh Air
 RMC-108-BV180-1800 scfh Air
 RMC-121-BV1-10 scfm Air
Model NumberRange
 RMC-122-BV2-20 scfm Air
 RMC-123-BV3-30 scfm Air
 RMC-134-BV2-20 GPH Water
 RMC-135-BV8-90 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-BV1.2-10 GPM Water
Series RMC Rate-Master® Flowmeter (10" scale)
Model NumberRange
 RMC-101-SSV5-50 scfh Air
 RMC-102-SSV10-100 scfh Air
 RMC-103-SSV20-200 scfh Air
 RMC-104-SSV40-400 scfh Air
 RMC-105-SSV60-600 scfh Air
 RMC-106-SSV100-1000 scfh Air
 RMC-107-SSV120-1200 scfh Air
 RMC-108-SSV180-1800 scfh Air
 RMC-121-SSV1-10 scfm Air
 RMC-122-SSV2-20 scfm Air
 RMC-123-SSV3-30 scfm Air
 RMC-134-SSV2-20 GPH Water
 RMC-135-SSV8-90 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-SSV1.2-10 GPM Water
Model NumberRange
 RMC-101-SSV5-50 scfh Air
 RMC-102-SSV10-100 scfh Air
 RMC-103-SSV20-200 scfh Air
 RMC-104-SSV40-400 scfh Air
 RMC-105-SSV60-600 scfh Air
 RMC-106-SSV100-1000 scfh Air
 RMC-107-SSV120-1200 scfh Air
 RMC-108-SSV180-1800 scfh Air
 RMC-121-SSV1-10 scfm Air
 RMC-122-SSV2-20 scfm Air
 RMC-123-SSV3-30 scfm Air
 RMC-134-SSV2-20 GPH Water
 RMC-135-SSV8-90 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-SSV1.2-10 GPM Water

If you're looking for Dwyer Instruments Malaysia products, please contact us.

For special Rate-Masters flowmeters, you can have adjustable pointer flags for quick visual reference.


Series RMA - 2" Scale

EXAMPLERMA1APFSeries RMA-1-APF Rate-Master® Flowmeter, 2" Scale, range .05-.5 SCFH air, with adjustable pointer flag.
SERIESRMA  Rate-Master® Flowmeter, 2" Scale
RANGE 1
2
3
4
5
6
7
8
9
10
151
150
11
12
13
14
15
16
26
21
22
23
24
25
32
33
34
42
43
44
45
 .05-.5 SCFH Air
.1-1 SCFH Air
.2-2 SCFH Air
.5-5 SCFH Air
1-10 SCFH Air
2-20 SCFH Air
5-50 SCFH Air
10-100 SCFH Air
15-150 SCFH Air
20-200 SCFH Air
5-50 cc/min Air
10-100 cc/min Air
30-240 cc/min Air
50-500 cc/min Air
100-1000 cc/min Air
200-2500 cc/min Air
400-5000 cc/min Air
1000-10000 cc/min Air
.5-5 LPM Air
1-10 LPM Air
2- 25 LPM Air
5-50 LPM Air
5-70 LPM Air
10-100 LPM Air
5-50 cc/min Water
10-110 cc/min Water
20-300 cc/min Water
1-11 GPH Water
2-24 GPH Water
4-34 GPH Water
5-50 GPH Water
OPTIONS  APF
ARB
AT
BO
BOV
BV
NIST
PTFE
SPCL
SSV
TMV
VIT
WL
Adjustable Pointer Flag
Arbitrary Scale (no units)
Aluminum Tag
Body Only
Body Only Valve Unit
Brass Valve
NIST Traceable Calibration Certificate
PTFE Valve Seat
Special Cleaning
Stainless Steel Valve
Top Mounted Valve
Fluoroelastomer O-rings
Without Logo


Series RMB - 5" Scale

EXAMPLERMB49BPFSeries RMB-49-BPF Rate-Master® Flowmeter, 5" Scale, range .5-5 SCFH air, with adjustable pointer flag.
SERIESRMB  Rate-Master® Flowmeter, 5 " Scale
RANGE 49
50
51
52
53
54
55
56
57
82
83
84
85
50D
51D
52D
53D
54D
82D
83D
85D
 .5-5 SCFH Air
1-10 SCFH Air
2-20 SCFH Air
5-50 SCFH Air
10-100 SCFH Air
20-200 SCFH Air
40-400 SCFH Air
50-500 SCFH Air
60-600 SCFH Air
1-12 GPH Water
1-20 GPH Water
4-40 GPH Water
10-100 GPH Water
1.2-10 SCFH & 0.6-5 LPM Air
3-20 SCFH & 1.5-9.5 LPM Air
4-50 SCFH & 2-23 LPM Air
10-100 SCFH & 5-50 LPM Air
20-200 SCFH & 10-95 LPM Air
1-12 GPH & 0.06-0.76 LPM Water
1-20 GPH & 0.065-1.25 LPM Water
10-100 GPH & 0.5-6.2 LPM Water
OPTIONS  ARB
AT
BO
BOV
BPF
BV
NIST
PTFE
SPCL
SSV
VIT
WL
Arbitrary Scale (no units)
Aluminum Tag
Body Only
Body Only Valve Unit
Adjustable Pointer Flag
Brass Valve
NIST Traceable Calibration Certificate
PTFE Valve Seat
Special Cleaning
Stainless Steel Valve
Fluoroelastomer O-rings
Without Logo


Series RMC - 10" Scale

EXAMPLERMC101CPFSeries RMC-101-CPF Rate-Master® Flowmeter, 10" scale, range 5-50 SCFH air, with adjustable pointer flag.
SERIESRMC  Rate-Master® Flowmeter, 10" Scale
RANGE 101
102
103
104
105
106
107
108
121
122
123
134
135
141
142
143
144
145
 5-50 SCFH Air
10-100 SCFH Air
20-200 SCFH Air
40-400 SCFH Air
60-600 SCFH Air
100-1000 SCFH Air
120-1200 SCFH Air
180-1800 SCFH Air
1-10 SCFM Air
2-20 SCFM Air
3-30 SCFM Air
2-20 GPH Water
8-90 GPH Water
.1-1 GPM Water
.2-2.2 GPM Water
.4-4 GPM Water
.8-7 GPM Water
1.2-10 GPM Water
OPTIONS  ARB
AT
BO
BOV
BV
NIST
CPF
SPCL
SSV
VIT
WL
Arbitrary Scale (no units)
Aluminum Tag
Body Only
Body Only Valve Unit
Brass Valve
NIST Traceable Calibration Certificate
Adjustable Pointer Flag
Special Cleaning
Stainless Steel Valve
Fluoroelastomer O-rings
Without Logo