Flowmeters

A Rotameter is a device that measures the volumetric flow rate of fluid in a closed tube. It belongs to a class of meters called variable area meters, which measure flow rate by allowing the cross-sectional area the fluid travels through to vary, causing a measurable effect.  An acrylic body Rotameter consists of a drilled in tapered tube, typically made of Solid Acrylic block with a 'float' (a shaped weight, made either of Aluminium, SS316, teflon or PVC), inside that is pushed up by the drag force of the flow and pulled down by gravity. The drag force for a given fluid and float cross section is a function of flow speed squared only, see drag equation.

• Economical & easy Installation
• Direct Reading Calibrated Scale
• Shutter Proof Acrylic Body
• Suitable For Gas & Liquid Flow
• Varied Mounting arrangement.
• Light Weight, Compact
• Built- In Flow Control Valve.
• Clear Visibility

Applications
These meters with all plastic fittings to eliminate corrosion completely. The meters are useful for measuring flow of air, common gases, water and many organic chemicals, excluding petroleum products. Applications include purging of gas lines, anaesthesia, laboratory instruments, leak detection, cable pressurization, industrial furnaces and chromatography etc.

• Gas Lines and Leak Detection
• Chromatography
• Industrial Furnaces
• Anaesthesia
• Cable Pressurization
• Laboratory Instruments

INDUS glass tube rotameters are unique design for industrial usage high precision tapered borosilicate glass tubes are utilized for best performances. Special design features eliminate stresses on glass tube even under industrial handling conditions. Glass tubes are field replacable without disturbing end connections. Flowstar glass tube rotameters are useful for measuring flow of Air, Comman Gases, Water, Alkelies, Oil & Organic Chemicals etc.

Applications

• Scientific laboratory
• Research centres
• Chemical industries
• Power Plant
• Water treatment plant

INDUS brand Metal Tube Rotameter Variable Area Flow Meters (Rotameters) are intended for application where high pressure, temperature OR corrosive conditions preclude the use of conventional glass tube. These are all Metal Variable Area type Flowmeter design to measure flow rate of liquids, gases & steam under critical conditions. It consists of a tapered metal tube, an indicating assembly and a float. A magnet encapsulate in float couples with rotating magnets connected to an indicating pointer, thus the movement of the float, is accurately indicated in terms of flowrate.

Special Features

• Dial Type Indication for easy reading.
• Straight flow design.
• Compact & Economical Design
• Precision swaged metering tube.
• Heavy duty welded float and guide construction.
• Guide cartridges easily removable for cleaning
• Provide with Electrical transmitter, flow indicator OR alarm.

Applications

• Chemical & Fertilizer Industries.
• Power Plants.

Features

• Inexpensive and accurate
• All Plastic wetted parts
• Easy to install and maintain
• Threaded housing allows field maintenance.
• Each fitting individually calibrated and marked with K factor. (ml/pulse)
• Ceramic ball bearing for superior low flow performance
• High amplitude pulse output signal can travel even 100 meter distance without the need of transmitter
• Sensor can be used directly with PLC or Data logger
• For best results it is recommended to provide a straight run of 10 and 5D on the upstream and  downstream respectively.

We are dealers for Full Bore Electromagnetic Flow Meter in process control instrumentation Maintenance free low cost, highly stable reliable & ideal flow meter suitable for wide ranges of liquid flow measurements the flow meter with low pressure. The measurement being based on ‘Faraday’s law of electromagnetic induction’ is independent of viscosity, density, pressure and temperature of the flowing media & measurement is a true volumetric flow measurement. Standard current output of 4 – 20 mA DC is provided which is directly proportional to the instantaneous volumetric flow rate.

Full Bore Electromagnetic Flow Meter can be used for precise flow measurement of all electrically conductive liquids such as sledges, slurries, sewage, milk, water and waste water.

Applications

• Chemical measurement, Water/ Wastewater Treatment & metering
• Building Automation & plant automation
• Pulp, paper, Food & Beverage
• Automated meter reading
• Drinking water / Public utility.

Dimensions

• 160 mm (L) x 100 mm (W) x 80 mm (D) (Head mount mounting)
• 64 mm (L) x 44 mm (W) x 35 mm (D) (remote Mounting)

The traditional method for measuring the flow of air blown up through a grain heap. Suited to under-floor systems and blowing fans, the meter is used to confirm that there is adequate flow of air emitting from the surface of the grain. Ventilated grain ensures that the moisture content of the stored grain is kept within a safe limit by the steady flow of air through the grain. The INDUS Crop Airflow Meter for grain is an essential instrument for the successful storage of grain in bulk where under-floor blowing systems are in use.

Principle of operation
A lightweight float, made from a thin aluminium disc, moves up and down a tapered transparent tube. A wire running through the centre holds the float in place. The float has been designed to spin, removing possible errors by reducing friction. Air passing up the tube supports the float at a height where its weight is balanced by the pressure drop of the air. A scale on front side gives the flow rate in ft/min. On the opposite side of the tube is a white strip to aid reading the flow rate.