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Phone: +86 16626708626Description
- Key Technical Specifications
| Parameter | Specification |
| Model / Part Number | SM9000 (SM900 family) |
| Measuring Principle | Magnetic-inductive electromagnetic measurement |
| Measuring Range | 0.2 to 50 L/min (0.05 to 13.2 gpm) |
| Process Connection | G 1 male thread (Flat seal / DN15 equivalent) |
| Medium Temperature Range | -10 to 70 °C (14 to 158 °F) |
| Operating Voltage | 18 to 30 V DC |
| Current Consumption | < 85 mA |
| Output Signals | Switching output, frequency, pulse, or analog (4…20 mA / 0…10 V) + IO-Link |
| Medium Conductivity Limit | ≥ 20 µS/cm |
| Pressure Rating | Up to 16 bar (232 psi) |
| Housing / Wetted Materials | Stainless steel (1.4404 / 316L), PEEK, FKM seals |
| Electrical Connection | M12 connector, 4-pin A-coded |
- Product Introduction
The ifm electronic SM9000 (part of the SM900 process sensor series) is a compact inline magnetic-inductive flow meter engineered for precise, contactless monitoring of conductive liquids such as water, water-glycol mixtures, and liquid coolants. Utilizing Faraday’s law of electromagnetic induction, it simultaneously measures volumetric flow velocity, total accumulated volume, and fluid temperature without internal moving parts—eliminating mechanical wear and minimizing pressure drop across the pipe run.
Equipped with a highly visible 4-digit alphanumeric display and integrated IO-Link digital communication, the SM9000 allows easy commissioning, remote parameter setup, and real-time diagnostic reporting. Process engineers widely deploy the SM9000 series in cooling water circuits, injection molding temperature control loops, dosing systems, and automated machine tool coolant lines.
SM9000
SM9000
- Troubleshooting Quick Reference
| Symptom | Possible Cause | Relevance to this Part | Quick Check Method | Recommendation |
| Display shows “FARB” or inaccurate zero reading | Measuring pipe empty or partially filled with air pockets | ✅ High | Check if pipe is completely purged of air bubbles and fully flooded | Ensure straight inlet run (≥ 5x DN) and mount sensor in a vertical riser pipe to guarantee a fully filled measuring pipe. |
| Output reads 0 L/min despite fluid flow | Medium conductivity too low (< 20 µS/cm) | ✅ High | Measure fluid conductivity using a portable conductivity meter | Verify fluid conductivity is ≥ 20 µS/cm. Magmeters cannot measure deionized (DI) water or oil-based fluids. |
| Erratic / fluctuating flow readings | Ground loops or high electromagnetic interference (EMI) nearby | ✅ High | Check electrical grounding of pipe work and sensor housing | Ensure metal piping is properly earth-grounded to potential equalization. Use shielded M12 sensor cabling. |
| Sensor not communicating via IO-Link | Pin 4 output mode misconfigured in parameters | ❌ Low | Check pin 4 setting in local keypad menu (IO-Link vs. standard PNP/NPN) | Reconfigure Pin 4 mode to IO-Link communication via the display menu or perform a factory reset. |
- Frequently Asked Questions (FAQ)
Q: What type of liquids can the ifm SM9000 measure?
A: The SM9000 can measure any conductive liquid with an electrical conductivity of at least 20 µS/cm (such as tap water, glycol mixtures, and conductive cleaning solutions). It cannot measure non-conductive fluids like pure oils, hydrocarbons, or demineralized/deionized water.
Q: Does the SM900 sensor require straight pipe inlet and outlet runs?
A: For optimal measurement accuracy (±1.5% of final value), a straight inlet run of at least 5 times the pipe diameter (5x DN) and an outlet run of 3 times the pipe diameter (3x DN) upstream and downstream of the sensor is recommended.
Q: What is the main benefit of the integrated IO-Link interface?
A: IO-Link provides lossless digital transmission of both flow and temperature process values over standard sensor cables, enables remote parameter configuration without stepping onto the factory floor, and delivers advanced predictive maintenance data (like operational hours and power-cycle diagnostics).
Q: Can I use this sensor in high-pressure or high-temperature lines?
A: The is rated for maximum system pressures up to 16 bar (232 psi) and medium temperatures up to 70 °C (158 °F). For higher temperature or pressure applications, higher-rated process sensor series should be selected.
Q: How are surplus or refurbished ifm flow meters tested prior to shipment?
A: Every unit passes a strict quality inspection process. We clean the flow tube body, verify thread integrity and sealing surfaces, connect the unit to an M12 power source to confirm display operation, run a hydraulic calibration check against a reference flow meter, and verify IO-Link parameter readouts prior to packaging.
