084H6003 Danfoss LLS 4000U 3/4 NPT Liquid Level Switch

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.The level switch includes a relay that switches by change in refrigerant state. The on site configuration of the LLS allows the normally open/closed relay setting depending on the desired correlation.Features:Plug and play liquid level switchEasy installation and minimum or no need for configurationSIL design with redundancy on microprocessor and relayConvenient communication with all units via Bluetooth and a Danfoss appSIL2 compliant versionTwo commonly used connection variantsMaintenance freeReplacement of electronic part without removing mechanical part (not applicable for SIL2 devices)Applicable for ammonia and commonly used H(C)FCsApplicable for R1234ze(E) with POE oils (miscible) or oil free systemsApplicable for refrigerant oils in Ammonia and H(C)FC systems with a refrigerant gas temperature up to max. 80 °CFor other medias and mixed medias, please contact DanfossWell proven reflectometry measuring principleConforms to: Telecommunications Directive RED 2014/53 EU. Low voltage directive 2014/35/EU. EMC directive 2014/30/EU. ROHS 2011/65/EUApprovals: SIL2, FCC, IC, EAC, UA, CMIIT, ANATEL, NBTC CRN