SGM-LK10 is a slim-rod magnetostrictive level sensor with a cable exit for small tanks and machine reservoirs. It measures 25–4000 mm with ±0.005 mm repeatability, mounts with an M18×1.5 or M22×1.5 thread, is sealed to IP68 and outputs 4–20 mA, 0–20 mA, 0–10 V, 0–5 V or RS485.
It is suitable for scenarios such as hydraulic position measurement in mining machinery. Part number prefix SGM stands for the SEGMENsensor magnetostrictive range; the full ordering code is explained below and in the datasheet.
Updated 2026-09-29 · Values from the SGM-LK10 datasheet, Rev A.
All values from the SGM-LK10 datasheet. Orderable range as listed; longer ranges and special temperature or pressure versions on request.
| Parameter | Value |
|---|---|
| Product parameters - output types | |
| Analog output | 0-10VDC / 0-5VDC / 4-20mA / 0-20mA |
| Digital output | RS485（modbus RTU） |
| Performance | |
| Measuring range | 25–4000 mm |
| Output signal | 0-20mA(max/min load 0/500Ω) 4-20mA(max/min load 0/500Ω) 0-10V(min. load >5KΩ) RS485(MODBUS RTU) |
| Resolution | 16-bit DA |
| Repeatability | ±0.005mm |
| Update time | depending on range |
| Operating conditions | |
| Magnet speed | any |
| Operating temperature | -40~+85℃ |
| Storage temperature | -55~+85℃ |
| Humidity | 90% humidity, no frost forming. |
| Temperature coefficient | <30ppm/℃ |
| Protection class | IP68 |
| Mounting | |
| Mounting orientation | any |
| Mounting | M18×1.5 or M22×1.5 (confirmed with order) |
| Position magnet | Ring magnet or float |
| Electrical | |
| Electrical connection | M12*1 waterproof connector or direct cable exit |
| Supply voltage | 24VDC (±20%) |
| Current consumption | varies with range |
| Reverse-polarity protection | Maximum -30VDC |
| Over-voltage protection | Maximum 36VDC |
| Insulation strength | 500VDC |
| Materials | |
| Sensor head | 304 stainless steel |
| Protective tube | 304 stainless steel |
| Mounting flange | 304 stainless steel |
Specifications, wiring, dimension drawings and the complete ordering code on two pages. No registration required.
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| 1 | +12V power supply |
| 2 | Power - (GND) |
| 3 | Analog output + |
| 4 | Analog output - |
| 1 | +12V power supply |
| 2 | Power - (GND) |
| 3 | RS485-A |
| 4 | RS485-B |
| red | Power |
| black | Ground |
| yellow | Signal A |
| green | Signal B |
Build the part number field by field. Outputs or options listed in the specifications but not in the ordering code are available on request.
| Code | Meaning |
|---|---|
| Mounting | |
| 18 | M18×1.5 |
| XX | Custom thread |
| Range | |
| 00025–04000 | 5 digits in mm, 5 mm steps |
| Output | |
| I1F | 4–20 mA, zero at rod end |
| I1R | 4–20 mA reversed (20–4 mA), zero at head |
| I2F | 0–20 mA, zero at rod end |
| I2R | 0–20 mA reversed (20–0 mA), zero at head |
| V1F | 0–10 V, zero at rod end |
| V1R | 0–10 V reversed (10–0 V), zero at head |
| V2F | 0–5 V, zero at rod end |
| V2R | 0–5 V reversed (5–0 V), zero at head |
| R4 | RS485 (Modbus RTU) |
| XX | Customer-specified output |
| Connection | |
| K12 | M12 connector |
| C02 … C99 | Direct cable, number = length in m (C02 = 2 m) |
| …X | Suffix X: customer-specified cable |
| Options | |
| (none) | Series standard dead zones |
| Z9 | Customer-specified dead zones |
| SGM-LK10-18-00800-I1F-C03 | 800 mm, 4–20 mA, 3 m cable |
| Part number | Best for | Range | Output | Protection |
|---|---|---|---|---|
| SGM-LS10 | Magnetostrictive level sensor | 25–8000 mm | 4–20 mA / 0–20 mA / 0–10 V / 0–5 V / RS485 | IP68 |
| SGM-LC10 | Corrosion resistant magnetostrictive level sensor | 25–1000 mm | 4–20 mA / 0–20 mA / 0–10 V / 0–5 V / RS485 | IP68 |
| SE-LX10 | Magnetostrictive transmitter for magnetic level indicator | 200–8000 mm | 4–20 mA / 0–10 V / 0–5 V / RS485 | IP67 |
| SE-LX20 | Explosion proof magnetostrictive level transmitter | 200–8000 mm | 4–20 mA / 0–10 V / 0–5 V / RS485 | IP67 |
| SE-LX30 | Flexible cable magnetostrictive level transmitter | 200–8000 mm | 4–20 mA / 0–10 V / 0–5 V / RS485 | IP67 |
| SGM-LK10 | Small tank magnetostrictive level sensor | 25–4000 mm | 4–20 mA / 0–20 mA / 0–10 V / 0–5 V / RS485 | IP68 |
New to the technology? Read How to choose a liquid level sensor.
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