Flow Correction Chart for Flow Meters

Gas that flowmeter was calibrated for:

Gas being used with flowmeter

Argon
Carbon Dioxide
Nitrogen

Argon

1

0.94
1.19

Carbon Dioxide

1.06

1
1.26

 

Unit Conversion of Flow

To convert

Method

LPM to CFH

X

LPM

By 2.118

SCFM to SCFH

X

SCFM

By 60

CFH to LPM

X

SCFH

By .472

 

Withdrawal Rate Charts for Acetylene and Carbon Dioxide

Acetylene Withdrawal Rate, Based on 300 Cubic Foot Cylinders

 

Carbon Dioxide Based on 50 Pound Cylinders

No. of Cylinders Active

Cubic Feet Available Per Hour

No. of Cylinders Active

Cubic Feet Available Per Hour

1

30

1

54

2

60

2

108

3

90

3

162

4

120

4

216

5

150

5

270

6

180

6

324

7

210

7

378

8

240

8

432

9

270

9

486

10

300

10

540

 

Gas Flow Correction Multiplier Table Verses Air (Air =1)

Acetylene

1.05

Argon

.85

Carbon Dioxide

.81

Helium

2.69

Hydrogen

3.79

Mapp

.82

Methane

1.34

Nitrogen

1.02

Nitrous Oxide

.81

Oxygen

.95

Propane

.80

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