247

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.

Regulator kits

Available as optional extras for both Rate-Master® flowmeters

and Visi-Float® flowmeters models. This view shows Model

VFA Visi-Float® flowmeter with integrally connected constant

differential pressure regulator. Recommended for use where

inlet air pressure fluctuates widely and constant flow is required.

The regulator maintains a constant pressure differential of

approximately 3 ±.15 psig. Supply pressure must be at least 3

psig above the flowmeter discharge to operate. The standard

regulator may be used with any Dwyer® Series RM or VF

flowmeter up to 200 SCFH. For higher flow rates consult the

factory.

RATE-MASTER® POLYCARBONATE FLOWMETERS

Gas Flow from 0.05 to 1800 SCFH,Water Flow to 10 GPM

RANGE CHART - RMB 5˝ SCALE - POPULAR RANGES

Range No. SCFH Air

Range No. SCFH and LPM Air

49***

50

51

52

53

54

55

56

57

0.5 to 5

1 to 10

3 to 20

4 to 50

10 to 100

20 to 200

40 to 400

50 to 500

60 to 600

50D

51D

52D

53D

54D

1.2 to 10/0.6 to 5

2 to 20/1 to 9.5

4 to 50/2 to 23

10 to 100/5 to 50

20 to 200/10 to 95

Range No. GPH and LPM Water

82D

83D

85D

1 to 12/0.06 to 0.76

1 to 20/0.065 to 1.25

10 to 100/0.8 to 6.2

Range No. GPH Water

82

83

84

85

1 to 12

1 to 20

4 to 40

10 to 100

***Accuracy ±5%.

RANGE CHART - RMC 10˝ SCALE - POPULAR RANGES

Range No. SCFH Air

Range No. GPH Water

101

102

103

104

105

106

107

108

5 to 50

10 to 100

20 to 200

40 to 400

60 to 600

100 to 1000

120 to 1200

200 to 1800

134

135

2 to 20

8 to 90

Range No. GPM Water

141

142

143

144

145

.1 to 1

.2 to 2.2

.4 to 4

.8 to 7

1.2 to 10

Range No. SCFM Air

121

122

123

1 to 10

2 to 20

4 to 30

SERIES RM

DWYER INSTRUMENTS, LLC | dwyer-inst.com

CALIBRATION SERVICES AVAILABLE

MODEL CHART

Model

Description

RMA-X

RMA-X-SSV†

RMA-X-TMV•†

RMB-X

RMB-X-SSV†

RMC-X

RMC-X-SSV†

Standard RMA

RMA with stainless steel valve

RMA with top mounted valve

Standard RMB

RMB with stainless steel valve

Standard RMC

RMC with stainless steel valve

How To Order: Series-Range No.(“X”)-Valve-Option

Example: RMA-2-SSV

(Series RMA with .1-1 SCFH air range and stainless steel valve)

•Provide same precision construction but for vacuum applications.

†

Valve is designed for flow adjustment only, not intended to be

used as an open/shut-off valve.

ACCESSORIES

Model

Description

RK-RMB

RKA

Regulator kit for Series RMB

Regulator kit for Series RMA

OPTIONS

To order add suffix: Description

-APF

-BPF

-CPF

-NIST

Adjustable pointer flag for Series RMA

Adjustable pointer flag for Series RMB

Adjustable pointer flag for Series RMC

NIST traceable calibration certificate

Note: Special ranges, scales, mounting arrangements, etc., are

available on special order, or in OEM quantities.

RANGE CHART - RMA 2˝ SCALE - POPULAR RANGES

Range No. SCFH Air

Range No. LPM Air

1**

2

3

4

5

6

7

8

9

10

.05 to .4

.1 to 1

.2 to 2

.5 to 5

1 to 10

2 to 20

5 to 50

10 to 100

15 to 150

20 to 200

26

21

22

23

24

25

.5 to 5

1 to 10

2 to 25

5 to 50

5 to 70

10 to 100

Range No. CC/Min. Water

32

33

34

5 to 50

10 to 110

20 to 300

Range No. CC/Min. Air

Range No. GPH Water

151*

150*

11

12

13

14

5 to 50

10 to 100

30 to 200

50 to 500

100 to 1000

200 to 2500

42

43

44

45

1 to 11

2 to 24

4 to 34

5 to 50

*Accuracy ±8%, NIST not available.

**NIST not available.

USA: California Proposition 65

WARNING: This product can expose you to chemicals including Lead, which is known to the State

of California to cause cancer and birth defects or other reproductive harm. For more information go

to www.P65Warnings.ca.gov.