ML7 Magnetostrictive Level Transmitter

High-precision magnetostrictive level transmitter for clean liquids: ±1 mm level accuracy, rigid probes to 4 m and cable probes to 18 m, with level and interface measurement.

Key Specifications

Model: ML7
Principle: Magnetostrictive
Size / Connection: Thread / flange mounting (rigid rod or flexible cable probe)
Measuring range: Rigid rod 300–4,000 mm; flexible cable 300–18,000 mm
Accuracy: Level ±1 mm; interface ±2 mm (metering version 0.1 mm)
Output / Protocol: 4–20mA + HART; RS485 / Modbus-RTU

Category: Level Transmitters » Magnetostrictive Level Transmitter

Keywords:magnetostrictive level transmitter high accuracy level sensor interface level transmitter level transmitter with Modbus

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The ML7 uses the magnetostrictive principle for the highest accuracy in this catalog: ±1 mm on level and ±2 mm on interface, with 0.3 mm resolution (metering versions reach 0.1 mm accuracy and 0.02 mm resolution). An intelligent signal-recognition algorithm needs no threshold setting and is effectively maintenance-free.

Rigid rods cover 300 mm to 4 m and flexible cables 300 mm to 18 m, for media densities from 0.48 to 1.2 g/cm3. Dual output options — 4-20mA with HART, or RS485 Modbus-RTU — integrate directly with control systems.

Key Features

Level accuracy ±1 mm, interface ±2 mm; metering version 0.1 mm
Simultaneous level and interface measurement
Intelligent signal recognition — no threshold setup, maintenance-free
Rigid rod 300–4,000 mm; flexible cable 300–18,000 mm
Explosion-proof certification for hazardous areas; SIL3 safety-related use

Technical Specifications

Measuring range	Rigid rod 300-4,000 mm; flexible cable 300-18,000 mm
Accuracy	Level +/-1 mm; interface +/-2 mm; metering version 0.1 mm
Resolution	0.3 mm; metering version 0.02 mm
Medium density	0.48-1.2 g/cm3
Output	4-20mA + HART; RS485 / Modbus-RTU
Features	Intelligent signal recognition, no threshold setting; level and interface measurement
Explosion protection	Certified for hazardous areas; suitable for SIL3 safety-related applications

FAQ

How accurate is the ML7?

±1 mm for level and ±2 mm for interface as standard; the metering version reaches 0.1 mm accuracy with 0.02 mm resolution.

What probe lengths are available?

Rigid rods from 300 to 4,000 mm and flexible cable probes from 300 to 18,000 mm for deep tanks.

Which media suit the ML7?

Clean liquids with density 0.48–1.2 g/cm3, such as fuels, solvents and process liquids in tanks where high-accuracy gauging is required.

Request a Quote

Send your medium, pipe size, flow range, temperature and pressure to admin@hainameter.com or WhatsApp +86 15671082677.