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1SVR730850R0100 ABB CM-ENS.11S Liquid Level Monitoring Relay
ABB CM-ENS.11S liquid level monitoring relay 1SVR730850R0100 with a 24–240 V AC/DC control supply, 5–100 kΩ adjustable sensitivity, filling or draining monitoring and one changeover output contact for conductive fluid level control.
£75.83
Why Choose the ABB CM-ENS.11S Liquid Level Monitoring Relay?
The ABB CM-ENS.11S is a compact liquid level monitoring relay designed for automatic minimum and maximum level supervision of conductive fluids. With ABB order code 1SVR730850R0100, it provides filling or draining control for tanks, reservoirs and process vessels while helping protect pumps against dry running and tanks against overflow.
The CM-ENS.11S operates from a wide 24–240 V AC/DC control supply and features an adjustable sensitivity range of 5–100 kΩ. This adjustable response allows the relay to be matched to the conductivity of the monitored liquid, with front-mounted potentiometers providing straightforward commissioning and adjustment.
A single changeover (SPDT) output contact rated at 250 V / 4 A provides reliable switching for pumps, contactors, alarms and control-system inputs. Screw connection technology, DIN-rail mounting and a compact 22.5 mm housing make the CM-ENS.11S easy to integrate into industrial control panels.
Key Advantages
- Automatic minimum and maximum liquid level monitoring for conductive fluids.
- Supports both filling and draining control applications.
- Helps protect pumps against dry running and tanks against overflow.
- Wide 24–240 V AC/DC control supply simplifies use across different control systems.
- Adjustable 5–100 kΩ sensitivity accommodates different conductive liquids.
- 1 c/o (SPDT) output contact for control, signalling and alarm functions.
- Compact 22.5 mm-wide housing conserves DIN-rail space.
- Screw terminals provide secure industrial field wiring.
Key Features
- ABB CM-ENS liquid level monitoring relay series.
- Designed for conductive fluid level monitoring.
- Minimum and maximum level supervision.
- Selectable filling or draining monitoring function.
- 24–240 V AC/DC rated control supply voltage.
- 5–100 kΩ adjustable sensitivity range.
- Front-face potentiometers for sensitivity adjustment.
- 1 c/o (SPDT) relay output.
- Output contact rated at 250 V / 4 A.
- Open-circuit operating principle.
- Screw connection technology with double-chamber cage terminals.
- Compact DIN-rail mounting format.
Reliable Filling, Draining and Pump Protection
Conductive liquid level monitoring uses electrodes positioned within a tank or vessel to detect the presence of electrically conductive liquid. The ABB CM-ENS.11S evaluates this condition and switches its output relay according to the selected filling or draining function, enabling automatic control without relying on moving mechanical level switches.
Its adjustable 5–100 kΩ sensitivity allows the monitoring circuit to be adapted to liquids with different conductivity characteristics. In practical installations, the relay can help prevent pumps from operating without sufficient liquid or stop filling equipment before a vessel overflows, improving process reliability and equipment protection.
Typical Applications
- Tank minimum and maximum level monitoring.
- Automatic filling and draining systems.
- Pump dry-running protection.
- Tank overflow prevention.
- Water and wastewater installations.
- Industrial process tanks and reservoirs.
- Pump control panels.
- Machine and process automation systems using conductive liquids.
Technical Specifications
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| Signal / Input Range | 5–100 kΩ | |
|---|---|---|
| Monitoring Function | Liquid level | |
| Series | CM-ENS | |
| ABB order code | 1SVR730850R0100 | |
| Product type | Liquid level monitoring relay | |
| Monitoring function | Minimum/maximum level, filling or draining | |
| Suitable medium | Conductive fluids | |
| Rated control supply voltage | 24–240 V AC/DC | |
| Measuring range / sensitivity | 5–100 kΩ | |
| Output | 1 c/o (SPDT) contact | |
| Output contact rating | 250 V / 4 A | |
| Operating principle | Open-circuit principle | |
| Terminal type | Screw terminals | |
| Protection rating | IP50 housing / IP20 terminals | |
| Mounting | DIN rail | |
| Operating temperature | -25 to +60 °C | |
| Storage temperature | -40 to +85 °C | |
| Width | 22.5 mm | |
| Height | 85.6 mm | |
| Depth | 103.7 mm | |
| Net weight | 0.124 kg | |
| EAN | 4013614502934 |
Frequently Asked Questions
What is the ABB CM-ENS.11S 1SVR730850R0100 used for?
The ABB CM-ENS.11S is used for minimum and maximum level monitoring of conductive liquids, including automatic filling or draining control, pump dry-running protection and tank overflow prevention.
What supply voltage does the CM-ENS.11S require?
The CM-ENS.11S operates from a wide 24–240 V AC/DC rated control supply.
What sensitivity range does the CM-ENS.11S provide?
The relay provides an adjustable sensitivity range of 5–100 kΩ, allowing it to be adapted to different conductive fluids.
Can the CM-ENS.11S control both filling and draining applications?
Yes. The CM-ENS.11S supports filling or draining monitoring, making it suitable for automatic tank-level control and associated pump protection functions.
What output does the CM-ENS.11S provide?
The relay provides one changeover (SPDT) output contact rated at 250 V / 4 A for connection to pumps, contactors, alarms and control circuits.
Trusted ABB Liquid Level Monitoring Technology
ABB CM-ENS monitoring relays provide dependable conductive liquid level supervision for industrial automation, combining adjustable sensitivity, filling and draining control, pump protection and compact DIN-rail installation.
