Electromagnetic flow meters in Bangladesh

Conductivity

A magmeter only measures conductive liquids: usually at least 5 µS/cm (20 µS/cm for demineralised water). Oils, solvents and gases need a different principle (Coriolis, turbine, ultrasonic or vortex).

Liner

Hard rubber or polyurethane for water and abrasive slurries; PTFE or PFA for chemicals and hot liquids (PFA up to about 150–180 °C).

Electrodes

316L stainless steel for water; Alloy C22/Hastelloy, titanium, tantalum or platinum for acids, chlorides and aggressive chemicals.

Size and velocity

Size the meter for about 1–5 m/s at normal flow; the line size is not always the best meter size.

Output and power

4–20 mA HART with pulse output is standard; Modbus, PROFIBUS, EtherNet/IP or PROFINET are options. Mains (100–240 V AC) or 24 V DC; two-wire loop-powered versions exist for hazardous areas.

Installation

Keep the pipe full, allow straight pipe (typically 5 D upstream, 2 D downstream unless the meter is rated for zero straight run) and ground the meter with grounding rings or a grounding electrode.

It depends on line size, liner and electrode materials, accuracy, transmitter version and brand. Send the line size, liquid, temperature, pressure, flow range and required output and we quote within 24 hours.

Yes. Magmeters have no moving parts and no obstruction, so they are the usual choice for slurries, pulp stock and sludge; choose an abrasion-resistant liner and, for high solids, a meter designed for slurry service.

No. Oils are not conductive; use a Coriolis, oval gear, turbine or ultrasonic meter.

Our listings cover Endress+Hauser, KROHNE, ABB, Badger Meter, Emerson (Micro Motion) and Yokogawa; other makes can be sourced on request.