Tecfluid FLOMID Electromagnetic Flowmeter DN3 to DN500

Overview

The Tecfluid FLOMID is a modular electromagnetic flowmeter for conductive liquids, offered in compact and remote versions from DN3 up to DN500. Because the measurement is independent of density, temperature, viscosity and pressure, and because the flow tube has no obstructions or moving parts, the Tecfluid FLOMID suits clean water, wastewater, chemicals and liquids carrying solids. The Spanish manufacturer Tecfluid builds the series around a common sensor family and a choice of XT5, MX4 and XL1 converters, so one platform covers simple totalising duties and full diagnostic installations.

Seven Star LLC supplies the Tecfluid FLOMID to water utilities, EPC contractors, desalination operators and process plants in Oman and the GCC. As a trusted supplier with engineering support in Muscat, we help engineers choose line size, lining, electrode material and converter so that the meter is correct for both the process and the control system on the first delivery.

Measurement Principle

Operation is based on Faraday’s law of induction. Coils in the sensor create a magnetic field B across the pipe; when a conductive liquid flows through it at average velocity vm in a pipe of diameter D, a voltage V = B · vm · D is induced between two electrodes. This voltage is directly proportional to the average velocity, and the converter turns it into a volumetric flow rate. The coils are excited with a pulsed field, which keeps zero drift to a minimum and avoids electrolysis at the electrodes.

With no moving parts and a full-bore tube, pressure drop is very low and solids pass without retention, so maintenance is minimal. The meter can be mounted in any position as long as the pipe runs full and the electrodes stay wetted, with a minimum straight run of 5 × DN upstream and 3 × DN downstream. For plastic or non-conductive pipes two earthing rings are required, and plastic rings with special electrodes are available for liquids that attack metal rings.

Engineering Design of the Tecfluid FLOMID

The flow tube is EN 1.4301 (AISI 304) with carbon steel flanges as standard and 316L on request. Linings are PP or PVDF for wafer sensors, ebonite (hard rubber) or PTFE for flanged sensors, and PTFE for hygienic and threaded versions. Electrodes can be Hastelloy C22, titanium, EN 1.4404 (AISI 316L) or tantalum, which lets the Tecfluid FLOMID be matched to seawater, brine, acid or caustic service. PTFE and PVDF linings accept −20°C to +120°C, PP accepts −10°C to +80°C and ebonite −20°C to +90°C.

Three converter options are offered. The XT5 provides a local display, totaliser, 4–20 mA and pulse outputs, compact or remote, with HART on the XT5H. The MX4 adds two configurable relay outputs and full diagnostics, with HART on the MX4H and MODBUS RTU RS485 on the MX4B, and is programmed from its keypad or Winsmeter MX4 software. The XL1 is a blind transmitter with 4–20 mA and a digital output configurable as pulses or alarm.

Key Features

Engineers specify the Tecfluid FLOMID for the following reasons:

• Accuracy is ±0.5% of reading for flow velocities of 0.4 m/s and higher.
• Flow rates from 5 l/h to 7069 m3/h are covered across sizes DN3 to DN500.
• Pulsed coil excitation minimises zero drift and avoids electrode electrolysis.
• The obstruction-free bore gives low pressure drop and passes solids without blockage.
• Wafer, flanged, hygienic and threaded sensors share one converter family.
• Four lining and four electrode materials allow selection for aggressive or abrasive liquids.
• HART and MODBUS communication are available on request for integration with DCS and SCADA.
• Short straight runs of only 5 × DN upstream and 3 × DN downstream simplify skid layouts.

Industrial Applications

Tecfluid lists cooling and heating circuits, water treatment plants, food and beverage and pharmaceutical processing, the petrochemical industry and offshore platforms, paper mills, fertiliser plants and machinery testing as typical uses. In the Gulf region the Tecfluid FLOMID fits reverse osmosis permeate and brine lines, chemical dosing, sewage treatment plant inlets and outlets, district cooling make-up water and irrigation networks.

In Oman, likely sites include desalination and water transmission projects around Muscat and Barka, industrial wastewater plants in the Sohar and Duqm zones, and food and dairy plants in Salalah. Seven Star LLC supports these projects with genuine Tecfluid FLOMID meters and complementary instruments such as the Tecfluid Series 2000 variable area flowmeter, the Tecfluid LT-R153 magnetic level transmitter and, where a project specifies another make, the Siemens SITRANS FM MAG 5100W electromagnetic flowmeter.

Technical Specifications

The Tecfluid FLOMID data below are taken from the manufacturer technical catalogue:

How to Order

To quote the Tecfluid FLOMID, send Seven Star LLC an RFQ with the liquid, conductivity, line size, flow range, pressure, temperature, connection standard and preferred converter and output. Our instrumentation division in Muscat completes the sizing, confirms availability and factory lead time, and provides the manufacturer technical catalogue for download. Seven Star LLC supplies genuine Tecfluid FLOMID electromagnetic flowmeters with engineering support for water and process projects in Oman and the GCC.