ALLMAG 4000 Electromagnetic Flow Meter
A full-bore magnetic flow meter for water, effluent, slurries and chemicals, in compact or remote versions, with a choice of liners and electrodes for the liquid you are measuring.
Key Features of the ALLMAG 4000 Electromagnetic Flow Meter
Faraday principle
The induced voltage is proportional to flow velocity, so the reading is not affected by density, viscosity, temperature, pressure or conductivity above the minimum.
Turndown is up to 1500:1.
Liner choice
Neoprene for water, sewage and low-abrasion slurry, polyurethane for abrasive mineral slurry, and PTFE, F46 or PFA for strong acids and alkalis.
Electrode choice
316L stainless steel, Hastelloy B or C, titanium, tantalum, platinum-iridium or tungsten-carbide coated steel, matched to the corrosion and abrasion of the liquid.
Backlit display and keys
A high-definition backlit LCD shows flow rate, totals and alarms, with navigation keys for set-up.
Self-diagnostics
Intelligent empty-pipe detection and electrode resistance measurement flag an empty pipe or contaminated electrodes.
Outputs for the control system
4 to 20 mA, pulse or frequency, high and low alarm outputs, and RS485, RS232 or HART communication.
ALLMAG 4000 Technical Specifications
Tap a group to filter the electromagnetic flow meter specifications, or show them all.
- 0.5%Accuracy1.0% version available
- 15 m/sMaximum velocityturndown up to 1500:1
- DN10 to DN2000Pipe sizesflanged as standard
- IP68Protectionremote version
| Specification | Details |
|---|---|
| Measured medium | Electrically conductive liquids and slurries, conductivity > 5 µS/cm (20 µS/cm for demineralised water) |
| Accuracy | 0.5% (1.0% version available); repeatability 0.2% |
| Flow velocity | Up to 15 m/s; turndown up to 1500:1; response time 0.02 s |
| Pipe sizes | DN10 to DN2000 (3/8" to 80"); flow ranges per size in the datasheet |
| Outputs | 4 to 20 mA, pulse or frequency, high and low alarm outputs, flow direction indicator |
| Communication | RS485, RS232 or HART |
| Display | High-definition backlit graphic LCD; units in L, m³, kg or t per second, minute or hour |
| Versions | Compact (transmitter on the sensor) or remote (wall-mount transmitter, 10 m cable as standard) |
| Process connection | Flange as standard; thread or clamp on order |
| Nominal pressure | DN6 to DN50: PN40; DN65 to DN150: PN16; DN200 to DN600: PN10; DN700 to DN2000: PN6 |
| Liner and temperature | Neoprene or PU up to 60 °C (rubber up to 80 °C), PTFE up to 120 °C, F46 up to 150 °C, PFA up to 180 °C |
| Electrodes | 316L stainless steel, Hastelloy B, Hastelloy C, titanium, tantalum, platinum-iridium, tungsten-carbide coated stainless steel |
| Body and grounding | Carbon steel, 304 or 316 stainless steel body; grounding ring, grounding electrode or grounding screw |
| Straight pipe | Inlet run of at least 10 × DN, outlet run of at least 5 × DN |
| Protection | IP65 compact, IP68 remote (IP67 on order) |
| Supply | 100 to 240 V AC or 24 V DC |
| Hazardous areas | No ATEX approval; for non-hazardous areas |
Figures from the Allpronix ALLMAG 4000 datasheet. Confirm the size, liner, electrodes and options for your application before ordering.
Download Data SheetHow does the ALLMAG 4000 work?
Step by step:
Flow is the velocity multiplied by the bore area, so the meter must run full. Install it after a pump and before a control valve, avoid the highest point of the line, and keep 10 × DN straight pipe upstream and 5 × DN downstream.
Where the ALLMAG 4000 is used
Typical applications for this electromagnetic flow meter, from the manufacturer's documentation.
- 01Water and wastewaterRaw water, potable water, sewage and effluent lines, with neoprene liners and 316L electrodes.
- 02Mining and mineralsMineral and coal slurries, with polyurethane liners for abrasive duty.
- 03Chemical processingAcids, alkalis and corrosive media with PTFE, F46 or PFA liners and Hastelloy, titanium or tantalum electrodes.
- 04Food, beverage, pulp and paperProcess water, product lines and paper stock in full pipes.
How the ALLMAG 4000 compares
The highlighted row is this instrument. Tap any other name to open its page.
| Instrument | Principle | Range | Output | Supply | Protection |
|---|---|---|---|---|---|
| Electromagnetic | |||||
| ALLMAG 4000 electromagnetic flow meter | Electromagnetic | DN10 to DN2000, up to 15 m/s | 4 to 20 mA, pulse, RS485, HART | 100 to 240 V AC or 24 V DC | IP65 compact, IP68 remote |
| ALLMAG 5000 IO-Link electromagnetic flow meter | Electromagnetic | 0.01 l/min (G¼) to DN100 flanged | IO-Link, 4 to 20 mA, pulse, switch | 19 to 30 V DC | IP67 |
| Coriolis | |||||
| Coriolis mass flow meter | Coriolis | DN3 to DN150, up to 360 t/h | 2 × 4 to 20 mA, pulse, Modbus, HART | 24 V DC or 220 V AC | IP67 |
| Flow sensor | |||||
| ALL-005 programmable thermal flow sensor | Thermal (calorimetric) | 0.04 to 3 m/s liquids, 2 to 100 m/s air | 2 × switch, 4 to 20 mA, IO-Link | 18 to 30 V DC | IP65 / IP67 |
| Differential pressure | |||||
| Itabar and deltaflow pitot flow tubes | Differential pressure | DN40 up to DN12000 | Via the DP transmitter | Passive sensor | Stainless steel, up to 400 °C (IBF) |
From Selection to a Working Signal in Your Control System
A flow meter is only as useful as the signal that reaches the control room. Proplant PCE handles the steps around the instrument as well as the instrument itself.
Application review
We check the liquid or gas, pipe size, flow range, process conditions and output before recommending a meter.
Supply
Instruments from the brands on this page, with datasheets and calibration certificates for your engineering file.
Installation
Mechanical installation, earthing, cabling and termination by our E&I team.
Integration
Signal wiring and configuration into your PLC or SCADA, including Siemens systems.
What to tell us so we can recommend an instrument
Tick off what you already know. We will check the ALLMAG 4000 against your conditions, or suggest a better fit from our range.
Other flow instruments to consider
ALLMAG 4000 FAQ
What can the ALLMAG 4000 measure?
Electrically conductive liquids and slurries in full pipes, with a conductivity above 5 µS/cm (20 µS/cm for demineralised water). It cannot measure oils, gases or other non-conductive media.
How accurate is it?
The standard version is 0.5% with 0.2% repeatability. A 1.0% version is also available.
Which liner should I choose?
Neoprene suits water, sewage and low-abrasion slurry, polyurethane suits abrasive mineral and coal slurry, and PTFE, F46 or PFA suit strong acids and alkalis and higher temperatures.
What straight pipe does it need?
At least 10 × DN upstream and 5 × DN downstream to meet the accuracy specification.
Can the transmitter be mounted away from the pipe?
Yes. The remote version has a wall-mount transmitter connected by a 10 m cable as standard, and the sensor is rated IP68.
Does it connect to a PLC or SCADA?
Yes. Outputs include 4 to 20 mA, pulse and alarm outputs, with RS485, RS232 or HART communication.
Can Proplant PCE help me size the meter?
Yes. Send us the liquid, pipe size, flow range and process conditions and we will recommend a size, liner and electrode material.
Let's Discuss Your Flow Application
Tell us what is flowing, the pipe it flows in and what the signal needs to do. We will come back with a recommendation and the datasheet.