CMF Purge type VA Flowmeters

DESIGN FEATURES

  • Ten to one rangeability
  • Heavy wall, precision bore, borosilicate glass metering tubes with contrasting background
  • Scales fused on metering tubes or scales with conversion chart
  • Tube sealed on compression gaskets by threaded seal
  • Easy removable tubes without disconnecting the instrument
  • Metal side plates and plastic front and back window

DESCRIPTION

The CM series of flowmeters provide an economical means of flow rate indication and control for general use, and laboratory applications. The instruments are ideal for common applications like purging services, cooling water flow indication, bearing lubrication, carrier gas flow rate indication, fuel flow indication, in chromato- graphy and atomic absorption and indication and control of doping gas in electronic crystal  growing furnaces.

SPECIFICATIONS

Scale length :

model CMF-1 : 60 mm

model CMF -2 : 90 mm

model CMF -3 : 150 mm

model CMF -4 : 230 mm

Accuracy :

model CMF -1 : ±10% F.S., Optional ±5% F.S

model CMF -2 : ±10% F.S., Optional ±5% F.S

model CMF -3 : ±5 % F.S., Optional ±2% F.S

model CMF -4 : ±5 % F.S., Optional ±2% F.S

Repeatability : ± 0.5%

Rangeability : 10:1

Maximum operating pressure :1400 kPa (14 bar)

Maximum operating temperature : 120⁰C

Construction Data

  • Fitting material: 316 SS standard (see options)
  • Connection material: 316 SS standard (see options)
  • Connection types :
  • Standard 1/8” BSP
  • Optional :
  • −  1/8” NPT, 1/4” NPT, 1/4” BSP
  • −  1/8” tube compression FESTO type
  • −  1/4” tube compression FESTO type
  • −  1/4” I.D. Hose (barbed nipple)
  • Sideplate material: Anodized aluminium
  • Metering tube material : Borosilicate glass
  • Float material: Glass, Aluminum, 316 SS,
  • Float stop material: Teflon, PA
  • Tube packing material : Viton, Neoprene
  • 0-Ring material: Viton, Neoprene

Capacity table for flowmeter selection

Tube CODE

Tube size

D x L

mm

Scale Length (Nominal)

mm

Float type

(1)

Aluminium Conical Hollow

(2)

SS-304/316 conical Hollow

(3)

SS-304/316 Ball

(4)

PVC/Teflon Ball

(5)

Glass

Ball

(6)

SS-304/316 conical

Min- Max LPM Air

Min- Max LPM Air

Min- Max LPM Air

Min- Max LPM Air

Min- Max LPM Air

Min- Max LPH Water

101

10100

60

0.01 - 0.1

0.02 - 0.2

0.02 - 0.2

0.005-0.05

0.01 - 0.1

0.05 - 0.5

102

0.05 - 0.5

0.1 - 1

0.1 - 1

0.02 - 0.2

0.05 - 0.5

0.1 - 2

103

10150

90

0.05 - 0.5

0.1 - 1

0.1 - 1

0.02 - 0.2

0.05 - 0.5

0.2 - 2

104

0.1 - 1

0.2 - 2

0.2 - 2

0.05 - 0.5

0.1 - 1

0.4 - 4

105

10230

150

0.1 - 1

0.2 - 2

0.2 - 2

0.05 - 0.5

0.1 - 1

0.2 - 2

106

0.2 - 2

0.4 - 4

0.4 - 4

0.1 - 1

0.2 - 2

0.8 - 8

151

15150

90

0.2 - 2

0.4 - 4

0.4 - 4

0.1 - 1

0.2 - 2

0.8 - 8

152

0.5 - 5

1 - 10

1 - 10

0.3 - 3

0.5 - 5

2 - 20

153

15230

150

0.5 - 5

1 - 10

1 - 10

0.3 - 3

0.5 - 5

2 - 20

154

1 - 10

2 - 20

2 - 20

0.5 - 5

1 - 10

4 - 40

155

15300

230

1 - 10

2 - 20

2 - 20

0.5 - 5

1 - 10

4 - 40

156

1 - 15

3 - 30

3 - 30

1 - 10

1 - 15

6 - 60

Ordering Information

Base Model

CMF-1

See Dimensional drawing

 

CMF-2

 

CMF-3

 

CMF-4

Construction

 

1

304 SS (standard)

Material

 

2

316 SS

 

 

3

Brass

Tube Type

 

 

XXX

To be selected from Capacity Table

Float Material

 

 

 

X

To be selected from Capacity Table

Scale Type

 

 

 

 

A

mm scale + calibration curve

 

 

 

 

 

B

Direct reading-specific fluid, unit

 

 

 

 

 

C

Direct reading-air (l/h)

 

 

 

 

 

D

Direct reading-water (l/h)

 

 

 

 

 

E

Direct reading-air (SCFH)

 

 

 

 

 

F

Direct reading-water (GPH)

Accuracy

 

 

 

 

 

10

10% FS

See specification

 

 

 

 

 

 

05

5% FS

 

 

 

 

 

 

02

2% FS

Connections

 

 

 

 

 

 

C1

1/8  BSP (standard)

 

 

 

 

 

 

 

C2

1/8 tube compression – FESTO Type

 

 

 

 

 

 

 

C3

¼  tube compression – FESTO Type

 

 

 

 

 

 

 

C4

Barbed nipple for ¼ in ID pipe

 

 

 

 

 

 

 

C5

1/8” NPT

 

 

 

 

 

 

 

C6

1/4” NPT

 

 

 

 

 

 

 

C7

1/4” BSP

FA Valve

 

 

 

 

 

 

 

0

No FA valve

 

 

 

 

 

 

 

 

1

Valve at inlet

 

 

 

 

 

 

 

 

2

Valve at outlet

Alarm

 

 

 

 

 

 

 

 

0

No alarm

 

 

 

 

 

 

 

 

 

1

With alarm

Mounting

 

 

 

 

 

 

 

 

 

1

Bezel

 

 

 

 

 

 

 

 

 

 

2

Threaded adaptor

 

 

 

 

 

 

 

 

 

 

3

Table model

Entry (Inlet)

 

 

 

 

 

 

 

 

 

 

1

Bottom entry

 

 

 

 

 

 

 

 

 

 

 

2

Back entry

Exit (Outlet)

 

 

 

 

 

 

 

 

 

 

 

1

Top entry

 

 

 

 

 

 

 

 

 

 

 

 

2

Back entry

Designation →

CMF-X

X

XXX

X

X

XX

CX

X

X

X

 

 

 

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