ABB CM Liquid-Level Monitoring Relays

ABB CM Liquid-Level Monitoring Relays Supplier,Exporter in India

ABB CM-ENS & CM-ENE Liquid-Level Monitoring Relays

ABB CM liquid-level monitoring relays are used for automatic level control in water tanks, reservoirs, pump systems and industrial process vessels. They work with electrodes fitted inside the tank and detect the presence or absence of a conductive liquid.

The relays can be used to start or stop pumps automatically, prevent tanks from overflowing and protect pumps against dry running. They are commonly installed in water treatment plants, pumping stations, building services, industrial plants and OEM control panels.

The ABB liquid-level monitoring range mainly includes CM-ENE MIN, CM-ENE MAX and CM-ENS series relays. CM-ENE models provide basic level protection, while CM-ENS models offer adjustable sensitivity and more flexible filling or draining control.

For an ABB liquid-level monitoring relay supplier in India, CM-ENS pump protection relay, tank level control relay or ABB dry-run protection relay, buyers can share the required model, supply voltage and quantity for quotation.

ABB CM Liquid-Level Relay Models

ABB CM-ENE MIN

CM-ENE MIN is a simple liquid-level relay mainly used for pump dry-running protection.

The relay monitors the minimum liquid level and can switch off the pump when the level falls below the electrode position.

It is suitable for applications such as:

• Water pumps
• Borewell and sump systems
• Storage tanks
• Pump protection panels

ABB CM-ENE MAX

CM-ENE MAX is designed mainly for overflow protection. It monitors the maximum liquid level and provides an output when the liquid reaches the upper electrode.

Typical applications include:

• Tank overflow protection
• High-level alarm
• Reservoir monitoring
• Filling systems

ABB CM-ENS.11 / CM-ENS.13

CM-ENS.11 and CM-ENS.13 are used for single-level monitoring with adjustable sensitivity.

Main versions include:

• CM-ENS.11S – 1SVR730850R0100
• CM-ENS.11P – 1SVR740850R0100
• CM-ENS.13S – 1SVR730850R2100
• CM-ENS.13P – 1SVR740850R2100

The S versions use screw terminals, while P versions use push-in terminals.

ABB CM-ENS.21 / CM-ENS.23

CM-ENS.21 and CM-ENS.23 provide a wider sensitivity range and are suitable for different types of conductive liquids.

Models include:

• CM-ENS.21S – 1SVR730850R0200
• CM-ENS.21P – 1SVR740850R0200
• CM-ENS.23S – 1SVR730850R2200
• CM-ENS.23P – 1SVR740850R2200

These models can be used for filling or draining control depending on the panel requirement.

ABB CM-ENS.31

CM-ENS.31 is the more flexible model in the range and is suitable for applications requiring minimum and maximum level control, wide sensitivity adjustment and operating delay.

Models include:

• CM-ENS.31S – 1SVR730850R0300
• CM-ENS.31P – 1SVR740850R0300

CM-ENS.31 provides two changeover output contacts and can be configured for filling or draining operation.

It is a good choice for automatic pump and tank-level control where both minimum and maximum liquid levels need to be monitored.

Technical Specifications

• Product family: ABB CM-ENx
• Main ranges: CM-ENE and CM-ENS
• Application: Conductive liquid-level monitoring
• Monitoring functions: Filling, draining, minimum and maximum level
• Pump dry-running protection
• Tank overflow protection
• High and low level alarm
• Conductivity monitoring
• Sensitivity: Adjustable on CM-ENS models
• CM-ENS.31 sensitivity range: 0.1–1000 kΩ
• Wide-range supply: 24–240 V AC/DC on applicable models
• Output contacts: 1 or 2 changeover contacts depending on model
• Selectable filling or draining function on applicable models
• Adjustable ON/OFF delay on CM-ENS.31
• Screw terminal versions: S suffix
• Push-in terminal versions: P suffix
• LED operating indication
• DIN rail mounting
• Housing width: 22.5 mm on CM-ENS range
• Electrodes available separately as accessories

Features

• Automatic tank filling and draining
• Pump dry-run protection
• Tank overflow protection
• Minimum and maximum level monitoring
• Adjustable sensitivity for different conductive liquids
• Wide 24–240 V AC/DC supply on selected models
• Screw and push-in terminal options
• LED status indication
• Compact DIN rail mounting
• Adjustable delay on CM-ENS.31
• Suitable for pump panels and automated water systems
• Electrode-based level sensing without moving parts

ABB Liquid-Level Relay for Pump Dry-Run Protection

Running a pump without sufficient liquid can damage the pump and motor.

An ABB liquid-level relay can monitor the minimum water level through an electrode installed in the tank, sump or reservoir. If the liquid level falls below the selected point, the relay can disconnect the pump through the control circuit.

CM-ENE MIN and CM-ENS models can be used for this type of pump dry-run protection.

Typical applications include borewell pumps, transfer pumps, sump pumps and industrial water systems.

ABB Liquid-Level Relay for Tank Filling & Overflow Protection

ABB CM relays can also automate tank filling. When the liquid reaches the minimum level, the relay can start the filling pump. Once the maximum level is reached, the pump can be stopped.

For a simpler high-level alarm or overflow requirement, CM-ENE MAX can be used.

For more complete minimum/maximum level control, CM-ENS.31 provides greater flexibility.

Conductive Liquids Suitable for CM Level Monitoring

ABB CM liquid-level relays work by detecting the electrical resistance of the liquid between the electrodes.

They are therefore mainly intended for conductive liquids, such as:

• Water
• Drinking water
• Wastewater
• Process water
• Rainwater
• Coolant mixtures
• Conductive chemical solutions
• Other conductive industrial liquids

The suitability of the relay depends on the conductivity of the actual liquid, so the sensitivity setting should be checked for process applications.

Applications

ABB CM liquid-level relays are used in:

• Water storage tanks
• Overhead tanks
• Underground tanks
• Sumps
• Reservoirs
• Pumping stations
• Water treatment plants
• Wastewater treatment plants
• Industrial process tanks
• Cooling water systems
• Pump control panels
• Building water systems
• HVAC water systems
• Irrigation systems
• Rainwater collection
• Industrial washing systems
• Food and beverage plants
• Process industries
• OEM machinery
• Automatic filling systems
• Dry-running pump protection
• Tank overflow protection

Choosing the Correct ABB CM Liquid-Level Relay

For a straightforward dry-run protection requirement, CM-ENE MIN can be considered.

For basic overflow or maximum-level protection, CM-ENE MAX is suitable.

For adjustable sensitivity and more flexible liquid monitoring, the CM-ENS range provides additional options.

Where both minimum and maximum levels need to control a filling or draining pump, CM-ENS.31 is one of the important models to consider.

For quotation, buyers should provide:

• Required ABB model
• Supply voltage
• Filling or draining application
• Minimum/maximum level requirement
• Type of liquid
• Number of output contacts required
• Screw or push-in terminals
• Electrode requirement
• Quantity
• Destination country

Looking for ABB CM Liquid-Level Monitoring Relays?

We supply ABB CM liquid-level monitoring relays for pumps, tanks, water treatment, industrial process systems, OEM panels and export requirements.

Enquiries are welcome for ABB CM-ENE MIN, CM-ENE MAX, CM-ENS.11, CM-ENS.13, CM-ENS.21, CM-ENS.23 and CM-ENS.31 liquid-level monitoring relays.

For an ABB liquid-level monitoring relay supplier and exporter from India, ABB pump dry-run protection relay, tank overflow relay, CM-ENS.31 level controller or conductive liquid-level relay, send the complete model, supply voltage, quantity and destination country for quotation.