ifm SM6004 Magnetic-Inductive Flow Meter, G 1/2, 0.1-25 l/min

ifm SM6004 Magnetic-Inductive Flow Meter, G 1/2, 0.1-25 l/min

The ifm SM6004 is a magnetic-inductive flow meter for small water circuits, measuring 0.1 to 25 l/min (0.03 to 6.6 gpm) with a G 1/2 external thread (DN15). It also measures the medium temperature from -20 to 80 degrees Celsius and delivers both values on two scalable 4 to 20 mA analogue outputs, which makes it a clean fit for cooling circuits of lasers, welding power sources, spindles and machine tools.

A four-digit LED display shows the values with six unit indicators. Accuracy is ±(2 % of measured value + 0.5 % of the final value) with 0.2 % repeatability. Seven Star LLC supplies the SM6004 in Oman and the GCC as an independent supplier.

SM6004 technical specifications

The table lists the values published by the manufacturer for the SM6004. Where a parameter has several operating modes, the headline value is shown; the full parameter list is in the manufacturer documentation.

How the SM6004 works

The SM6004 is a magnetic-inductive flow meter: a magnetic field is applied across the pipe, and a conductive liquid moving through the field induces a voltage proportional to its velocity. Because nothing protrudes into the flow, there are no moving parts to wear and the pressure loss is very small. A temperature sensor in the same unit adds medium temperature as a second measured value, shown on a four-digit LED display and available on the outputs. The liquid must be conductive; the conductivity and viscosity limits stated in the table must be respected.

Where the SM6004 fits and related parts

Where the SM6004 covers up to 25 l/min, the SM8000 covers 0.2 to 100 l/min on a G 1 (DN25) connection with switching, analogue, pulse and IO-Link outputs. The SM6004 has no IO-Link or switching output, which is the major difference when reading the two specifications. For air, use the SD6500, and for point flow detection in water, oil or air the SA5000.

Selection and ordering checklist for the SM6004

Work through the points below before you confirm the order, so that the SM6004 you receive is the one your machine or plant needs.

• Check that the medium is conductive (at least 20 µS/cm) and that viscosity is below 70 mm²/s at 40 degrees Celsius
• Confirm the flow range: 0.1 to 25 l/min, and the pipe adapter to G 1/2
• Check pressure limits: 16 bar rating, 15.3 bar for CRN applications
• Plan inlet pipe of 3 x DN and outlet of 1 x DN
• Decide on the two analogue outputs: one for flow, one for temperature

The manufacturer lists this article under the type designation Magnetic-inductive flow meter, SMR12GGX50KG/US-100. The article number SM6004 is the reference to quote when ordering, and the type designation is useful for technicians who compare the label on an installed unit.

Installation, commissioning and maintenance

Install the meter with the inlet and outlet pipe lengths shown in the table so that the profile is stable, and keep the pipe full at all times; air pockets cause unstable readings. Flat seals are used on the thread, so make sure the sealing surfaces are clean and the adapters fit the pipe. In cooling circuits and process water loops place the meter where bubbles will not collect at the top. Commissioning involves setting the display unit, the analogue range and the damping value, and then comparing a reading against a reference flow if the application is critical. Keep the M12 connector dry and tight, and flush the line if scale or magnetic debris could build up.

The inlet and outlet pipe lengths (3 x DN and 1 x DN) are listed for a stable flow profile and should be respected. The sensor body uses a flat seal on the thread, with an adapter to the pipe. Make sure the circuit is completely filled, and vent any air, since bubbles give erratic values. Use the damping setting to calm the display on pulsating pump flow.

Typical applications in Oman and the GCC

Cooling circuits for industrial equipment are the main use: chilled water to laser sources, plasma cutters, welding machines and process heat exchangers. In Oman and the GCC, where ambient temperatures put cooling circuits under load, flow monitoring prevents overheating damage, and the temperature output gives early warning of fouling or loss of chiller capacity.

Flow meters in the region often sit in cooling and utility circuits that run year-round at high ambient temperature. Scale, bubbles and dirt are the main sources of error, so strainers upstream and a full pipe at the measuring point matter more than any setting in the menu.

SM6004 compared with related ifm types

The table places the SM6004 next to neighbouring types in the same application group, so you can see whether a sibling would suit the job better.

Information to send with an RFQ for the SM6004

To prepare an accurate offer for the SM6004, please include the following with your enquiry:

• Pipe size and the type of adapter needed
• Expected flow range and the minimum flow you must detect
• Medium, conductivity and temperature
• Outputs required: analogue, switching, pulse or IO-Link
• Quantity and delivery location

Documents and quotation

No datasheet is attached to this page. Send us the part number SM6004 and we will confirm which documents are available, such as the datasheet and operating instructions, and for IO-Link devices the device description file.

Seven Star LLC is an independent supplier in Muscat serving Oman and the GCC and is not affiliated with the manufacturer; the name ifm is used only to identify the product. Prices are not shown on the page, so send the part number, the quantity and the delivery location to receive a quotation.