The Spirax Sarco LC2250 is a water level controller designed specifically for conductive liquids. The device has an operating limit of up to 32 bar at 239 °C, features a front panel with IP65 protection rating, and is certified by TÜV and UL. It accepts 1-6 Vdc or 4-20 mA sensor signals and is commonly used for water level regulation, on-off control, and low water level alarms in steam boilers. It is also suitable for high/low level alarm interlock systems in conductive liquid tanks or vessels.
LC2250 Product Photo
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Spirax Sarco LC2250 Conductive Liquid Boiler Level Controller
For level regulation and alarms in boilers, tanks, and vessels, with 4-20 mA signal support.
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Specifications
- Minimum Conductivity
- 5 μS/cm (5 ppm)
- Operating Limit
- 32 bar at 239 °C
- Supply Voltage
- 110-240 Vac, 50/60 Hz
- Power Consumption
- 7.5 W (maximum)
- Ambient Temperature Range
- 0 to 55 °C
- Protection Rating
- Front panel IP65 / NEMA 4
- Overvoltage Category
- III
- Pollution Degree
- 2 (as supplied), 3 (installed in enclosure, minimum IP54)
- Level Sensor Input Signal
- 1-6 Vdc or 4-20 mA
- Input Resolution
- 14-bit
- Analog Output Signal
- 0-20 mA or 4-20 mA
- Relay Output
- 2 × SPCO, 3 A at 250 Vac (resistive load)
- Mounting Method
- Panel, DIN rail, baseplate
- Housing Material
- Polycarbonate
- Product Certifications
- UL, TÜV (Vd TÜV Water Control 100)
Application scenarios
Steam Boiler Water Level Regulation and On-Off Control
Used for level regulation or on-off control of conductive fluids in steam boilers. It accepts level sensor or transmitter signals and maintains boiler water level within the set range via control outputs. The product features filtering to adapt to fluctuating level conditions.
Steam Boiler Low Water Level Alarm
Used in steam boiler level protection systems to alarm on low water level conditions. The LC2250 has high and low level alarm channels and provides relay outputs for boiler level alarms or interlock systems.
High/Low Level Alarms for Conductive Liquid Tanks or Vessels
Used for tanks or vessels containing conductive liquids to alarm on preset high or low level conditions. The LC2250 is suitable for level control in boilers, tanks, and vessels, and provides high and low level alarm channels.
FAQ
What level control methods is the LC2250 suitable for?
The LC2250 is used for level switching or regulation control of conductive fluids, suitable for boilers, tanks, or vessels. On-off control can be used for pumps or solenoid valves, and regulation control can be used for valve motor drives or 4-20 mA control signals.
What conductivity requirements does the LC2250 have for the measured medium?
The LC2250 is suitable for conductive fluids with a minimum conductivity of 5 μS/cm or 5 ppm. Specific configuration must be confirmed based on the actual model and application conditions.
What input and output signals does the LC2250 support?
Inputs include 1-6 V or 4-20 mA signals from level sensors or transmitters, as well as a 1 K potentiometer input for valve motor drives. Outputs can be used for pump or control valve control, and provide high or low alarm relay outputs as well as isolated 0-20 mA or 4-20 mA retransmission outputs.
What are the installation requirements for the LC2250?
The LC2250 supports panel, DIN rail, or baseplate mounting and must be installed in a suitable industrial control panel or fireproof enclosure with a minimum protection rating of IP54 or equivalent UL50/NEMA protection rating. It must not be installed outdoors without additional climatic protection. Do not obstruct the infrared light between devices during infrared communication.
What are the operating environment and maintenance requirements for the LC2250?
The LC2250 is suitable for heavy industrial environments, with a supply range of 110-240 Vac, an operating ambient temperature of 0-55 °C, and a maximum operating altitude of 2000 m. The product requires no special servicing, preventive maintenance, or product inspection, but boiler water level control and alarms require testing and inspection.