Flow meters in Bangladesh

Liquid, gas or steam

Electromagnetic meters for conductive liquids; Coriolis for mass flow of almost any liquid or gas; vortex for steam, gases and clean liquids; ultrasonic clamp-on when the pipe cannot be cut; turbine and oval gear for fuels and oils; rotameters for simple local indication.

Accuracy

Custody transfer and batching need ±0.1–0.5%; process monitoring is usually fine with ±0.5–2%; rotameters and water meters are typically ±2–5%.

Pipe size and range

Give the line size and the minimum, normal and maximum flow; turndown varies from about 10:1 (rotameter) to over 100:1 (magnetic, Coriolis).

Process conditions

State temperature, pressure, viscosity, solids content and the materials the liquid needs.

Output

Local display only, pulse for totalising, 4–20 mA/HART, or a fieldbus (Modbus, PROFIBUS, EtherNet/IP).

For clean or waste water an electromagnetic flow meter is the usual choice: no moving parts, no pressure loss and good accuracy. For simple consumption metering a multi-jet water meter is economical.

Oval gear (positive displacement), turbine or Coriolis meters; magmeters do not work on non-conductive liquids.

It depends on the principle, size, materials and outputs. Send the liquid, line size, flow range, temperature and pressure and we recommend a meter and quote within 24 hours.

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