Glass Tube Rotameter

Glass Tube Rotameter Manufacturers in India

Glass Tube Rotameter

A glass tube rotameter is a type of flow meter used to measure the flow rate of liquids or gases in a pipeline. It consists of a glass tube with a float inside that is free to move up and down with the flow. The float is typically shaped like a cylinder or a ball, and is designed to have a higher density than the fluid being measured.

The flow rate can be determined by observing the position of the float inside the tube and referring to a calibration chart. The glass tube allows the operator to visually observe the float and the flow, making the rotameter a simple, low-cost, and reliable method of flow measurement.

Principle Of Glass Tube Rotameter

The principle of operation of a glass tube rotameter is based on the relationship between the flow rate and the pressure drop across an orifice. The float inside the glass tube is positioned in such a way that it creates an obstruction, or orifice, in the flow stream. As the flow rate increases, the pressure drop across the orifice increases, causing the float to rise. Conversely, as the flow rate decreases, the pressure drop decreases, causing the float to fall.

The position of the float is proportional to the flow rate, and this relationship is calibrated on a chart. The chart is usually marked on the outside of the glass tube and displays the corresponding flow rate for a given float position. The rotameter is designed so that the pressure drop across the orifice and the consequent rise or fall of the float are proportional to the square root of the flow rate.

In summary, the glass tube rotameter works by measuring the pressure drop across an orifice created by the float and using this pressure drop to determine the flow rate. The position of the float inside the glass tube indicates the flow rate, and the operator can read this flow rate from the calibrated chart.

Specification

Size : 15NB TO 150NB
Connection : THREADED, FLANGED (ANSI/ASA/ASME B16.5/PN/NPT)
Materials : ASTM A216 GR. WCB(CS), SS 316, SS 304, PTFE, SS BUFFED, MS POWDER COATED, SS 316TI, HASTELLOY C, FRP, BOROSILICATE TOUGHENED GLASS, RUBBER, NEOPRENE RUBBER, METALLIC SPIRAL WOUND, CAF, FEP and other as per customer requirement.
Flow range 10 to 20,000 LPH of water
Accuracy ±1.5 % full scale reading
Glass Tube Rotameter Accessories Screwed /Flanged
House -connection
Face-To-Face Distance : 500 mm

Operating Principle & Standard Features

This Variable Area Flow Meter is essentially a Glass Tube Rotameter.

The flow rate is measured as a function of the annulus area, and the differential pressure across the annulus region is constant. This location is shown as being in the position of a "Float."

Glass Tube Rotameter Designed on variable area basis using tappered borosilicate glass tube pressure rating at 10kg/cm2 temp at 150°C. We are leading manufacturer & supplier of Glass Tube Rotameter in Gujarat, India.
Material of wetted part C.S./S.S..304/ S.S.316
PP/PVC/Teflon
Line Size 15mm NB to 100NB
Flow range 10 to 20,000 LPH of water
Accuracy ±1.5 % full scale reading
Glass Tube Rotameter Accessories Screwed /Flanged
House -connection
Operating Principle & Standard Various Features
Glass Tube Rotameter is basically a Variable Area Flow Meter.
The differential pressure across the annulus area is constant and the flow rate is measured as a function of the annulus area. This area is displayed as the position of a “Float”.
Various Material of Construction
Line Size from 15 NB to 100 NB
Heavy Duty Design with Maximum Visibility
Ranges between 2.0 LPH to 25000 LPH
Two Tone Powder Coated Excellent Finish
No Threads in Body, Avoids Corrosion
Face-To-Face Distance : 500 mm
Single Piece (jointless) PTFE / PP claded end connections
Easy to Maintain and Replace
Suitable for on Line Installation
Measuring Span : 1:10
Glass : Borosilicate
Linear Scale
Slip on Flange - facilitates change in line of sight
Accuracy : +/- 2% of Full Scale
SS

Key Application

Oil and gas pumping and refining processes
Fuel cell research
Chemical manufacturing
Analytical instrumentation
Water treatment and distribution systems
Industrial processes
Pharmaceutical productio
SN
Parts OPTIONS
A
Enclosure
MS- Powder Coated SS- Powder Coated SS- Buffed
B
Flange - NB 15,  25,  40,  50,  80
C
Flange Specifications ASA-150,  BS10-T-E,  BS10 T-F,  Din-10
D
MOC Wetted CS,  SS304,  SS316,  CS-PTFE,  CS-PP
E
Float - MOC SS316,  PTFE,  PVC,  Aluminium
F
Flange - MOC CS,  SS304,   SS316
G
PTFE Enve. Gland Packing Nitrite ,  Silicon,  Viton
H
Measuring Range in LPH of H2O @ T :- Ambt   /   Pr : - Atm
Glass Size
With PTFE Float LPH
With SS 316 Float LPH
Max. Pressure
Drop in
mmwc
Test
Pressure
PN 1
2-20
3-30
140
15
PN 2
3-30
6-60
PN 3
4-40
10-100
PN 4
6-60
20-200
350
15
PN 5
8-80
30-300
PN 6
12-120
40-400
PN 7
18-180
60-600
PN 8
20-200
80-800
600
12
PN 9
40-400
100-1000
PN 10
50-500
150-1500
PN 11
80-800
250-2500
PN 12
90-900
300-3000
900
9
PN 13
100-1000
350-3500
PN 14
150-1500
400-4000
PN 15
200-2000
600-6000
900
7
PN 16
250-2500
700-7000
PN 17
400-4000
1000-10000
PN 18
500-5000
1500-15000
900
5
PN 19
600-6000
2000-20000
PN 20
800-8000
2500-25000