Clear tube flow meter

A clear tube flow meter is an expedient which processes the volumetric flow rate of liquid in a padlocked duct. It is a type of meter known as variable area meters, which calculate the rate of liquid flow by changing the cross-sectional area when the liquid passes through that area, producing a quantifiable consequence.

  • A rotameter requires no external power or fuel, it uses only the inherent properties of the fluid, along with gravity, to measure flow rate. 
  • A rotameter is also a relatively simple device that can be mass-manufactured out of cheap materials, allowing for its widespread use.
  • Since the area of the flow passage increases as the float moves up the tube, the scale is approximately linear.
  • Clear glass is used which is highly resistant to thermal shock and chemical action.

Technical Data Sheet

Diameter1/2“Inch
DN15
3/4“Inch
DN20
1“Inch
DN25
1.25“Inch
DN32
1.5“Inch
DN40
2“Inch
DN50
2.5“Inch
DN65
3“Inch
DN80
4“Inch
DN100
5“Inch
DN125
6“Inch
DN150
Flow Range
Blow 1”inch
L/h
UP 1“inch
m3/h
6-60
10-100
16-160
25-250
40-400
60-600
80-800
100-1000
40-400
60-600
100-1000
60-600
100-1000
160-1600
250-2500
400-4000
0.4-4
0.6-6
1-10
0.4-4
0.6-6
1-10
1.2-12
0.4-4
0.6-6
1-10
1.6-16
1-10
1.6-16
5.25
8-40
12-60
5-25
8-40
12-60
12-80
8-50
12-60
14-90
18-120
15-150
22-180
25-200
15-150
22-180
25-200
TypeLong Tube
Short Tube
Long Tube
Short Tube
Long Tube
Short Tube
Long Tube
Short Tube
Long Tube
Short Tube
Short Tube
Flange Type
Short Tube
Flange Type
Short Tube
Flange Type
Short Tube
Flange Type
Short Tube
Flange Type
Short Tube
Flange Type
Accuracy±4%±4%±4%±4%±4%±4%±4%±4%±4%±4%±4%
Pressure0.6MPa/6Bar0.6MPa/6Bar0.6MPa/6Bar0.6MPa/6Bar0.6MPa/6Bar0.6MPa/6Bar0.6MPa/6Bar0.6MPa/6Bar0.6MPa/6Bar0.6MPa/6Bar0.6MPa/6Bar
Temperature0-60℃0-60℃0-60℃0-60℃0-60℃0-60℃0-60℃0-60℃0-60℃0-60℃0-60℃

Products show

Float

holder

flange type

5 inch

clear tube

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