8181

8181 BURKERT | Alldatasheet

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Technical content

Visit product website  DATA SHEET Standard | EU | en | 2024-03-27 | 08 Level float switch

• Switch for neutral and aggressive liquids NO/NC Reed contact Vertical or horizontal mounting Molded lying leads or cable The device Type 8181 is a float switch that is insensitive to dirt particles in the liquid and is used to monitor the level in neutral or aggressive liquids in containers. The device consists of a fixed part, which contains the hermetically sealed reed contacts, and a float (moving part), which contains the magnets. This float actuates the reed contact, which can be either normally open or normally closed, depending on fluctuations in the liquid level. The device is available in different versions depending on the material (PP or stain less steel), installation position (horizontal or vertical), process connection (thread G ⅛" G ¼", G ¾"...) and electrical connection (leads or cable). Product variants described in the data sheet may differ from the product presentation and description. Type description Type 8181 © Christian Bürkert GmbH & Co. KG, Subject to alteration

2 | 7Visit product website  Table of contents 1. General technical data 3 Approvals and conformities 2.2. Standards 3. Materials 4 4. Dimensions 5 4.2. Switch with 5 m cable 5. Ordering information 7 5.2. Bürkert product filter 5.3. Ordering chart

3 | 7Visit product website  1. General technical data Product properties Material Make sure the device materials are compatible with the fluid you are using. Further information can be found in chapter “3.1. Bürkert resistApp” on page 4 Non wetted parts Cable gland For cable variant: PA Wetted parts Stem, float PP or stainless steel 1.4301/304 (1.4435/316L on request) Retaining ring Only for vertical variant: PP or stainless steel 1.4301/304 (1.4435/316L on request) Dimensions Further information can be found in chapter “4. Dimensions” on page 5 Switching point At tilt of 7° 3° (8.5 mm mm) Switching function Normally closed/open Float density Approx. 0.7 Electrical data Output type Reed contact Switching voltage Max. 48 V AC/DC Switching current Max. 0.5 A Breaking power • Only for vertical PP variant: 66 VA AC/DC For other variants: 50 VA AC/DC Contact resistance • Only for horizontal stainless steel variant: max. 200 mΩ For other variants: max. 150 mΩ Breakdown voltage • Only for vertical PP variant: min. 310 V AC For other variants: 600 V DC Insulating resistance Min. 10 MΩ Voltage supply cable • For variant with leads: 0.25 mm² min. cross section For variant with cable: PVC covering cable, 0.25 mm² min. cross section, 2 wires + shielding Medium data Process temperature • For PP variant: - 10…+ °C (+ 14…+ 176 °F) For stainless steel variant: - 40…+ 120 °C (- 40…+ 248 °F) Process pressure • For PP variant: max. 1 bar (vertical or horizontal mounting position) For stainless steel variant: max. 10 bar (vertical mounting position) max. 5 bar (horizontal mounting position) Process/Pipe connection & communication Process connection • Only for horizontal PP variant: thread G For variant with leads: thread G For variant with cable: thread G Electrical connection Leads 300 mm or cable 5 m Approvals and conformities Directives CE directive Further information on the CE Directive can be found in chapter “2.2. Standards” on page 4 Environment and installation Ambient temperature Operation and storage: - 10…+ °C (+ 14…+ 176 °F) Degree of protection IP65 Vibrations and shocks For stainless steel variant: 20G

4 | 7Visit product website  2. Approvals and conformities 2.1. Conformity In accordance with the Declaration of Conformity, the product is compliant with the EU Directives. 2.2. Standards The applied standards which are used to demonstrate compliance with the EU Directives are listed in the EU-Type Examination Certificate and/or the EU Declaration of Conformity. 3. Materials 3.1. Bürkert resistApp Bürkert resistApp – Chemical resistance chart You want to ensure the reliability and durability of the materials in your individual application case? Verify your combination of media and materials on our website or in our resistApp. Start chemical resistance check

5 | 7Visit product website  4. Dimensions 4.1. Switch with leads Note: Dimensions in mm, unless otherwise stated Horizontal PP variant Horizontal stainless steel variant ∅ 15 G 1/4" 25 25 73330 21 hex nut 20 hex nut ∅ 17 G 1/8" 15 13 46 80540 17 hex nut 14 hex nut Vertical PP variant Vertical stainless steel variant ∅ 18 G 1/8" 15525 44 330 14 hex nut 16 hex nut ∅ 28 G 1/8" 15525 44 380 14 hex nut 17 hex nut

6 | 7Visit product website  4.2. Switch with 5 m cable Note: Dimensions in mm, unless otherwise stated Horizontal PP variant Horizontal stainless steel variant ∅ 23 178 ∅ 15 115 158 ∅ 23 32 hex nut G 3/4" ∅ 23 185 ∅ 17 125 165 ∅ 23 G 3/4" 32 hex nut Vertical PP variant Vertical stainless steel variant ∅ 23 148 ∅ 18 128 ∅ 23 G 3/4" 32 hex nut ∅ 23 148 ∅ 28 128 ∅ 23 G 3/4" 32 hex nut

7 | 7Visit product website  5. Ordering information 5.1. Bürkert eShop Bürkert eShop – Easy ordering and quick delivery You want to find your desired Bürkert product or spare part quickly and order directly? Our online shop is available for you 24/7. Sign up and enjoy all the benefits. Order online now 5.2. Bürkert product filter Bürkert product filter – Get quickly to the right product You want to select products comfortably based on your technical requirements? Use the Bürkert product filter and find suitable articles for your application quickly and easily. Try out our product filter 5.3. Ordering chart Switching voltage Switching current Switching function Mounting position Process connection Material Electrical connection Article no. Max. 48 V AC/DC 0.5 A Normally closed/open 1.) Vertical G ⅛" PP 300 mm leads 438132  Horizontal Stainless steel 438150 Vertical 438159 Horizontal G ¼" PP 438141 Horizontal G ¾" PP 5 m cable 438496 Vertical 438502 Horizontal Stainless steel 438499 Vertical 438505 1.) Depending on the mounting orientation of the float Further variants on request Process connection NPT ¾", NPT Rc ¾", Rc Electrical connection m cable Additional Variant with reed contact implemented as alternator or normally open/closed, made of PP, with an Rc ½" threaded process connection and 3 m cable as electrical connection for horizontal mounting (see data sheet Type TCL001 for further information).