LLS 4000 Liquid level switch

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LLS 4000 electronic Liquid Level switch - Replacing the floating valve for industrial refrigeration

The Danfoss LLS 4000 Electronic Liquid Level Switch is a compact, cost efficient, and reliable switch for liquid level measurements.

With simple, one-point installation, smart commissioning via Bluetooth, and next-level reliability thanks to its Safety Integrity Level classification, the LLS 4000 makes electric liquid measuring smarter and more reliable than ever.

With the LLS 4000, Danfoss is changing the electronic liquid level switch game entirely. Offering superior reliability, cost-efficiency and user-friendliness the LLS 4000 electric level switch offers superb performance compared to mechanical alternatives - at a competitive price.

View the 3D model

Constructed with the user in mind, the LLS 4000 is easy to install with only one connection point, and replacement of the electronics can be done without emptying the subsystems. The LLS 4000 detects ammonia, HFC, HFO and oil (oil used in ammonia/freon (HFC)systems) – making it a versatile choice for a range of functions. Additionally, Bluetooth connectivity makes commissioning fast and easy using any smart device.

Designed for superior reliability, the LLS 4000 meets the highest safety requirements – the Safety Integrity Level 2. The Safety Integrity Level 2 – or SIL2 for short – is a measurement of performance and reliability needed for products in in applications with high safety standards. The safety classification is a testament of the LLS 400 Electric Liquid Level Switch’s superior reliability.

Make safety a competitive parameter

Maintaining the highest level of compliance with industry wide safety standards is an essential part of maintaining a strong brand and reputation among your customers. By selecting Safety Integrity Level approved products, your customers get reliable, certified components they need to achieve their functional safety goals and ensure reliable performance.

Electronic Liquid Level Switch

With the LLS 4000, Danfoss is changing the electronic liquid-level-switch game entirely. Offering superior reliability, cost-efficiency, and user-friendliness, the LLS 4000 electronic level switch offers superb performance compared to mechanical alternatives – at a competitive price point.

Documents

Documents
Type Name Language Valid for Updated Download File type
Brochure Liquid Level Switch - LLS 4000 Arabic (AE); Bulgarian; Czech; Danish; German; Greek (modern); English; Spanish, Castilian; Estonian; Persian; Finnish; French; Irish; Hebrew (modern); Hindi; Croatian; Hungarian; Indonesian; Icelandic; Italian; Japanese; Kazakh; Korean; Lithuanian; Latvian; Macedonian; Norwegian Bokmål; Dutch, Flemish; Polish; Portuguese; Romanian, Moldavian, Moldovan; Russian; Slovak; Slovenian; Serbian (RS); Swedish; Tamil; Thai; Turkish; Ukrainian; Vietnamese; Chinese (CN) Multiple 10 Mar, 2021 688.3 KB .pdf
Brochure Liquid Level Switch - LLS 4000 German Multiple 09 Sep, 2020 3.8 MB .pdf
Installation guide Liquid Level Switch Type LLS 4000 LLS 4000U Ukrainian Ukraine 27 Jul, 2020 4.2 MB .pdf
Data sheet Liquid Level Switch Type LLS 4000 LLS 4000U Spanish, Castilian Multiple 23 Feb, 2023 5.5 MB .pdf
Data sheet Liquid Level Switch Type LLS 4000 LLS 4000U French Multiple 23 Feb, 2023 5.4 MB .pdf
Data sheet Liquid Level Switch Type LLS 4000 LLS 4000U Chinese (CN) Multiple 23 Feb, 2023 5.6 MB .pdf
Data sheet Liquid Level Switch Type LLS 4000 LLS 4000U Ukrainian Ukraine 20 Aug, 2021 3.1 MB .pdf
Installation guide Liquid Level Switch Type LLS 4000_LLS 4000U Installation guide_Electronic part replacement English Multiple 29 Jul, 2024 2.6 MB .pdf
Installation guide Liquid Level Switch Type LLS 4000_LLS 4000U Installation guide_Electronic part replacement Ukrainian Ukraine 27 Jul, 2020 1.7 MB .pdf
Installation guide Liquid Level Switch Type LLS 4000_LLS 4000U Installation guide_Electronic part replacement Polish Multiple 31 Mar, 2021 1.8 MB .pdf
Data sheet Liquid level switch, type LLS 4000 and LLS 4000U Polish Multiple 27 Feb, 2023 5.5 MB .pdf
Data sheet Liquid level switch, type LLS 4000 and LLS 4000U English Multiple 31 Jul, 2024 5.6 MB .pdf
Data sheet Liquid level switch, type LLS 4000 and LLS 4000U Russian Multiple 27 Feb, 2023 6.0 MB .pdf
Data sheet Liquid level switch, type LLS 4000 and LLS 4000U Italian Multiple 27 Feb, 2023 5.5 MB .pdf
Installation guide Liquid Level Switch, Type LLS 4000 and LLS 4000U English Multiple 18 Mar, 2024 3.5 MB .pdf
Installation guide Liquid Level Switch, Type LLS 4000 and LLS 4000U Polish Multiple 31 Mar, 2021 3.1 MB .pdf
Data sheet Liquid Level Switch, Type LLS 4000 and LLS 4000U German Multiple 14 Mar, 2023 5.5 MB .pdf
Data sheet Liquid Level Switch, Type LLS 4000 and LLS 4000U Portuguese Multiple 14 Mar, 2023 5.5 MB .pdf
Safety guide LLS 4000/4000U Safety Manual Polish Multiple 31 Mar, 2021 1.0 MB .pdf
Safety guide LLS 4000/4000U Safety Manual Spanish, Castilian Multiple 01 Oct, 2020 1.5 MB .pdf
Safety guide LLS 4000/4000U Safety Manual Portuguese Multiple 01 Oct, 2020 1.5 MB .pdf
Safety guide LLS 4000/4000U Safety Manual Italian Multiple 01 Oct, 2020 1.5 MB .pdf
Safety guide LLS 4000/4000U Safety Manual Ukrainian Ukraine 07 Jun, 2022 2.5 MB .pdf
Safety guide LLS 4000/4000U Safety Manual German Multiple 01 Oct, 2020 1.6 MB .pdf
Safety guide LLS 4000/4000U Руководство по безопасности Russian Multiple 01 Oct, 2020 1.6 MB .pdf
Safety guide LLS 4000/4000U 安全指南 Chinese (CN) Multiple 01 Oct, 2020 2.1 MB .pdf
Safety guide Safety Guide LLS 4000/4000U English Multiple 31 Jul, 2024 2.0 MB .pdf

Related products

Software

LLS 4000 Liquid level switch

Connect and control your LLS 4000

Connect to and control any Danfoss LLS 4000 liquid level switch with the LLS 4000 app. Commissioning, setup, and monitoring can all be performed quickly and conveniently with just a few taps on your smartphone.