MFD Slurry Electromagnetic Flowmeter
The MFD Series Electromagnetic Flowmeter is designed specifically for liquid-solid two-phase flows such as pulp and ore slurry. It employs multi-frequency excitation and anti-interference technology to deliver stable measurement of high-concentration slurries with fast response.
Technical data
| Accuracy: | Class 0.5 | Process Temperature: | -25°C to +180°C (sensor side) |
| Process Pressure: | Up to 42 MPa | Nominal Size: | DN25–DN600 |
| Ingress Protection: | Sensor: IP68; Converter: IP67 | Applicable Concentration: | 5%–60% |
| Response Time: | ≥0.8 s |
Features & Benefits
Purpose-Built for Slurry Two-Phase Flow, Handles High Solids and Low Conductivity
The MFD series is a slurry-type electromagnetic flowmeter designed specifically for pulp, mud, mineral slurry, and coal-water slurry. It tolerates solids content (by volume) up to 70%—seven times that of standard series (≤10%)—and gas content up to 5%, with a minimum measurable conductivity as low as 5 µS/cm. The measuring tube has no flow restrictions or moving parts, so it causes no additional energy loss and will not clog—ideal for solid-liquid two-phase flow. From leaching and thickening to centrifugal separation, one meter covers the entire slurry process, eliminating the direct failure caused by exceeding the standard solids limit.
High-Frequency Excitation + High-Speed Sampling + Adaptive Filtering for Slurry Noise Suppression
Multi-frequency square-wave excitation, 19,200 SPS high-speed sampling, and DSP digital filtering work in tandem with comb-band filtering, sliding-average smoothing, noise correction, and spike rejection. The adaptive filter automatically adjusts strength based on real-time signal-to-noise ratio—tightening filtering at low flow and high noise, relaxing it at high flow and strong signal—balancing stability and response.
Response as Fast as 0.8 s for Process Interlock Control
Multi-frequency excitation detects flow changes rapidly, with a response time of 0.8 s—meeting the <1 s requirement for process interlock control. Adaptive damping keeps readings stable even under fluctuating flow conditions.
High Accuracy, Bidirectional Measurement, Calibration-Free Transmitter Interchangeability
Accuracy 0.5 class, repeatability ≤±0.06% to ±0.16%; excitation coil insulation resistance up to 500 MΩ for high SNR. DSP signal processing resolves micro-flow signals with startup velocity as low as 6 mm/s (depending on size). Supports bidirectional flow with configurable zero on reverse flow. Standard-simulated sensor calibration means transmitter replacement requires no recalibration against a flow standard; range rescaling needs no readjustment.
Smart Diagnostics + Wide Environmental Tolerance + Easy Installation
mpty-pipe detection with automatic alarm and zeroing; self-diagnostics cover excitation drive, system memory, and overrange faults. Explosion-proof Ex ia/db/eb IIC T4–T6 Gc/Gb, protection IP65/IP67/IP68, ambient temperature –40 °C to +70 °C. Wide power supply AC 100–230 V (±15%) / DC 11–40 V. Magnetic field balancing requires only 5D upstream and 2D downstream straight pipe. RS232/RS485/HART optional, 9-digit forward/reverse/net totalizers, remote and local configuration.
Certifications
-
EAC Ex Explosion Protection Certification
EAC conformity certificate issued by the Eurasian Economic Union (Russia, Kazakhstan, Belarus) under TR CU 012/2011, covering MF series electromagnetic flowmeters for explosive atmospheres.
-
CSA c/US Safety Certification
ertified by CSA Group for both Canada and the United States (c/US mark). Covers MFC, MFE-S, and MFD electromagnetic flowmeters to UL/CSA electrical measurement equipment standards, enabling market access in North America.
-
HART 7 Communication Registration
Certified by FieldComm Group to HART 7 protocol and IEC 61158 standards, enabling automatic device recognition and remote configuration in major DCS systems.
-
IECEx Explosion Protection Certification
International IECEx certificate (No. IECEx NEP 20.0031X) covering MFC, MFD, and MFE electromagnetic flowmeters with Ex db flameproof, Ex eb increased safety, and Ex ia intrinsic protection for IIC T6/T5 Gb hazardous areas. Recognized across 50+ member countries.
Applications
Chemical Industry
Flow measurement of low-conductivity conductive liquids, mother liquor, and slurry
Metallurgy
Ore slurry and electrolyte metering
Power Industry
Desulfurization and denitrification slurry, cooling water
Environmental Protection
Landfill leachate and industrial wastewater
Municipal Water
Wastewater, mud, and cement slurry measurement
Case Studies
Shandong Hualu-Hengsheng Chemical Co., Ltd.
Domestic Substitution of High-Pressure Electromagnetic Flowmeters for Coal-Water Slurry Gasification Units: Overcoming core challenges in high-frequency excitation and non-stationary signal fusion processing to replace imported instruments.
Zhejiang Jinli Environmental Protection Paper Industry Co., Ltd.
1 Million t/a Environmental Recycled Premium Packaging Paper Project: Multi-frequency excitation suppresses slurry noise, applied to pulping and papermaking processes.
CMOC Group Limited
Scheelite Recovery Production Line of Tungsten Mineral Processing No. 1 Company (11,000 t/d): Applied to flotation and tailings transport processes.
