LLS 4000 / LLS 4000U
The LLS 4000/4000U liquid level switch is designed to detect the state (gas or liquid) of the refrigerant in front of the sensing head, while installed in a wide range of refrigeration applications. The LLS level switch comes in 2 variants, LLS 4000 and LLS 4000U. They are identical except for the connector thread interface to the system. The LLS 4000 is provided with G 3⁄4” thread, while the LLS 4000U is provided with NPT 3⁄4” thread. The LLS 4000/4000U liquid level switch is based on the proven reflectometry measuring technology (microwave level measurement) adapted specifically for the new LLS 4000/4000U switch. LLS 4000/4000U liquid level switches can be used to control the liquid level of many different refrigerants in vessels, accumulators, receivers, standpipes, etc. The switches are normally installed in a pair of two, controlling the upper liquid level and the lower liquid level.
Features and benefits
- Plug and play liquid level switch
- SIL design with redundancy on microprocessor and relay
- Convenient communication with all units via Bluetooth and a Danfoss app
- SIL2 compliant version
- Two commonly used connection variants and it is Maintenance free
- Replacement of electronic part without removing mechanical part (not applicable for SIL2 devices)
- Applicable for ammonia and commonly used H(C)FCs
- Applicable for R1234ze(E) with POE oils (miscible) or oil free systems
- Applicable for refrigerant oils in Ammonia and H(C)FC systems with a refrigerant gas temperature up to max. 80 °C