GLASS TUBE ROTAMETER

Glass Tube Rotameters are industrial flow measurement devices that provide precise monitoring of liquid and gas flow rates. The device consists of a transparent borosilicate glass tube with a float inside, which rises or falls based on the fluid flow rate.

Brand :- LOCUS
Product Name :- Glass Tube Rotameter
Application :- Liquid & Gas Flow Measurement
Body Material :- SS 304 / SS 316 / MS / Aluminum / PVC
Tube Material :- Borosilicate Glass
Float Material :- SS / PTFE / PVC / Ceramic / Glass
End Connection :- Flanged / Threaded / Hose Nipple
Flow Range :- 2.5 LPH to 25,000 LPH
Operating Pressure :- Up to 25 kg/cm²
Operating Temperature :- -40°C to 200°C
Accuracy :- ±2% of Full Scale
Mounting Type :- Vertical

Description

1. PRODUCT DESCRIPTION

2. SPECIFICATIONS

Flow Range: 2.5 LPH to 25,000 LPH
Tube Material: Borosilicate Glass
Float Material: SS / PTFE / PVC / Ceramic / Glass
End Connection: Flanged / Threaded / Hose Nipple
Operating Pressure: Up to 25 kg/cm²
Accuracy: ±2% of Full Scale
Mounting Type: Vertical Installation

3. WORKING PRINCIPLE

A Glass Tube Rotameter operates on the principle of variable area flow measurement. When fluid passes through the vertical glass tube, it lifts a float positioned inside. The height of the float indicates the flow rate, which is calibrated on a scale printed on the glass tube. As flow increases, the float rises, and vice versa.

4. ASSEMBLY

A standard Glass Tube Rotameter consists of the following components:

1. Borosilicate Glass Tube – Transparent tube with calibration scale
2. Float – Moves up and down to indicate flow rate
3. End Fittings – Flanged, threaded, or hose nipple connections
4. Guide Rods & Stoppers – Prevents float movement beyond limits
5. Seals & Gaskets – Ensures leak-proof operation

5. INSTALLATION PROCESS

1. Select Installation Location – Ensure a vertical mounting position with minimal vibration.
2. Connect to Pipeline – Attach inlet and outlet using flanged, threaded, or hose nipple connections.
3. Ensure Proper Sealing – Use gaskets and tightening tools for leak-proof assembly.
4. Check Flow Direction – Fluid should enter from the bottom and exit from the top.
5. Slowly Open the Valve – Avoid sudden surges that may damage the float.
6. Calibrate if Necessary – Match the reading with standard calibration charts.

6. TECHNICAL SPECIFICATIONS

Parameter	Specification
Flow Measurement	Liquid & Gas
Tube Material	Borosilicate Glass
Float Material	SS / PTFE / PVC / Ceramic / Glass
Accuracy	±2% of Full Scale
Connection Type	Flanged / Threaded / Hose Nipple
Operating Pressure	Up to 25 kg/cm²
Operating Temperature	-40°C to 200°C
Scale Graduation	Direct Flow Reading

7. TROUBLESHOOTING (Transparent Tubular Level Gauge Issues)

Problem	Cause	Solution
Float Does Not Move	Blockage in the tube or inlet	Clean the tube and check for debris
Inaccurate Reading	Misalignment of the rotameter	Ensure vertical mounting and proper calibration
Leakage at Connections	Loose fittings or damaged gaskets	Tighten connections or replace gaskets
Float Stuck at Top/Bottom	High pressure surge or tube damage	Inspect for cracks and replace if necessary
Fluctuating Readings	Flow turbulence or vibrations	Stabilize mounting location and regulate flow

8. HS CODES & EXPORT COMPLIANCE

HS Code for Glass Tube Rotameter: 9026.10.10 (Flow measuring instrument)
Compliance: CE, ISO 9001, ISO 14001, ROHS, REACH

LOCUS BRAND ADVANTAGES:

- Precision-engineered for industrial applications
- High-quality borosilicate glass tube for durability
- Customizable flow range and material options
- Wide compatibility with industrial fluids and gases
- Stringent quality control for accuracy and reliability