Field Instruments

Product Overview

The ifm LMC840 is a capacitive point-level sensor designed for reliable detection of liquid and compatible media levels in tanks, containers, or vessels. Its design makes it ideal for demanding industrial applications, including liquids with foam, deposits, or varying properties. The LMC840 offers two programmable switching outputs (one with IO-Link communication) for flexible integration into control systems, enabling level alarms, pump control, overflow prevention, or dry-run protection.

Key Features

• Point-level detection suitable for water, oils, coolants, and various industrial liquids

• Two programmable switching outputs — one with IO-Link interface for parameterization, diagnostics, and remote monitoring

• Robust stainless-steel housing and screw-in adapter — reliable for industrial environments

• Configurable output behavior (normally open / normally closed) to match different control logic needs

• Resistant to foam, deposits, or viscous media — minimizing false triggers or maintenance needs

• Compact and easy to install — ideal for tanks, reservoirs, chemical vessels or pump-protection systems

Technical Specifications

Brand: ifm electronic
Model: LMC840
Type: Capacitive Point-Level Sensor / Level Switch

Outputs: 2 × switching outputs (digital), one with IO-Link communication interface
Supply Voltage: 18 … 30 V DC
Current Consumption: < 35 mA (standard)
Output Load Capacity: up to 50 mA (typical), depending on system
Connection: Screw-in adapter — simple installation in tanks, vessels or pipelines
Housing Material: Stainless steel — durable, corrosion-resistant and suited to industrial conditions
Media Compatibility: Liquids including water, oils, coolants, and other similar process fluids
Switch Point Configuration: User-configurable (NO/NC), adjustable to suit specific application needs
Environmental / Industrial Conditions: Designed for robust, long-term operation in typical process, chemical, water-treatment or industrial settings

Applications & Use Cases

• Point-level detection (high-/low-level alarm) in storage tanks, process vessels, or coolant/oil reservoirs

• Pump protection (dry-run prevention) by ensuring minimum liquid level before pump start

• Overflow detection / high-level alarm in tanks containing liquids, oils, or industrial fluids

• Level control and automation in chemical, water-treatment, HVAC, or process-engineered systems

• Replacement of mechanical float switches with a modern, maintenance-free electronic solution

• Integration into PLC/SCADA systems for automated process control, alarm or safety interlocks

Why Buy from FieldInstruments.lk

• We supply 100% genuine ifm electronic sensors — ensuring authentic quality and full compliance with manufacturer standards.

• Fast, reliable delivery across Sri Lanka — direct to your project, plant, or facility.

• Competitive pricing and transparent sourcing — suitable for single-unit purchases or bulk orders.

• Local technical support and after-sales service — we assist with selection, installation guidance, and configuration advice.

• Trusted supplier for industrial instrumentation — with proven experience supplying equipment for process control, water treatment, manufacturing, and fluid-handling industries.

Fieldinstruments.lk
50/3, Angampitiya Rd, Ethul Kotte, Sri Lanka. 10100.
Phone: +94718555888 Email: info@fieldinstruments.lk