*mydirectindustry

M

Product catalog summary

Overview: This document outlines the specifications and operational guidelines for Kobold's Magnetic Level Switches, models M01-M20, which are used for monitoring and controlling liquid levels in vessels. These switches can be customized to meet specific customer needs.

Specifications:

Switch Points: Up to 4.
Pressure and Temperature: Maximum pressure of 100 bar and temperature of 150°C.
Connections: Options include G ⅛, G ⅜, G ½, NPT, and flanges.
Materials: Available in stainless steel, brass, PVC-U, PP, NBR, and PVDF.
ATEX Certification: Available for Ex ia and Ex d.

Design and Operation:

Utilizes a float with a ring magnet to activate a hermetically sealed contact within the guide tube.
Contact types include Normally Open (N/O), Normally Closed (N/C), and changeover contacts.
Installation options include top or bottom of the vessel, with damping tubes for agitated liquids.

Advantages:

Easy installation and long electrical service life.
High operational reliability with an air gap between the guide tube and floats.
Ability to monitor multiple levels with one float.

Technical Details:

Electrical connections vary by model, with PVC or silicone cable options.
Protection type is IP 64 or IP 65 depending on the model.
Minimum liquid density and maximum pressure and temperature ratings are specified for each model.

Model Variations:

Models M01-M04 are mini switches with specific dimensions and technical details.
Models M05-M20 are standard switches designed for higher pressure applications.

Installation and Mounting:

Switches can be mounted vertically with a tolerance of ±30°.
Specific instructions are provided for high-pressure applications and switches with integrated temperature monitoring.

Technical Specifications:

Contact Types: N/O, N/C, and Changeover contacts, rated at 230 VAC/DC, 1 A, 60 VA, with ATEX Ex ia certification (Ui: 40 V).
Installation: Vertical position with a tolerance of ±30°.
Protection: IP 65 rated.
Minimum Liquid Density: Varies by model, from >0.5 kg/dm3 to >0.9 kg/dm3.
Maximum Pressure: 2 bar to 100 bar at 20°C, depending on the model.
Temperature Limits: PVC cables up to 70°C, silicone cables up to 150°C.
Guide Tube Length: Maximum lengths from 2 m to 6 m.
Switch Point Distances: Minimum distances from the end of the measurement tube and between contacts are specified for each model.
Hysteresis: 5 mm for all models.

Model Variations:

Models differ by float material (PVC, stainless steel 1.4404, PVDF) and guide tube options.
Connection heads and process connections vary, with different thread sizes and materials.
ATEX certifications available for certain models, with options for Ex ia and Ex d.

Installation and Configuration:

Specify cable length and type in writing.
Maximum of 4 contacts (N/O, N/C) or 3 SPDT contacts per model.
Connection heads and guide tube options must be specified according to model requirements.

Design and Materials:

Dimensions and materials are provided for each model, with specific process connections and electrical connections detailed.
Models include options for adjustable height and heavy-duty designs.

Notes:

Contact states are referenced to an empty tank with a density of 1.0 kg/dm3.
All specifications are subject to change without prior notice.

Catalog excerpts

Magnetic Level Switches Connection: G G ⅜, G ½ ,G 1, G 1½ ⅛, G 2, 1" NPT, 1½" NPT, 2" NPT, PG 7 male, DIN and ANSI flanges, special connections Material: stainless steel, brass, PVC-U, PP, NBR, PVDF Connection heads: aluminium, PA, PP, ABS KOBOLD companies worldwide: AUSTRALIA, AUSTRIA, BELGIUM, BULGARIA, CANADA, CHINA, CZECHIA, EGYPT, FRANCE, GERMANY, GREAT BRITAIN, HUNGARY, INDIA, INDONESIA, ITALY, MALAYSIA, MEXICO, NETHERLANDS, PERU, POLAND, Republic of Korea, ROMANIA, RUSSIA, SPAIN, SWITZERLAND, THAILAND, TUNISIA, turkey, USA, VIETNAM KOBOLD Messring GmbH Nordring 22-24 D-65719 Hofheim/Ts. Head Office: +49(0)6192 299-0 +49(0)6192 23398 info.

Open the catalog to page 1

Magnetic Level Switches for Liquids Model M01-M20 Model Codes Connection Anschlussthread gewinde Guide tube material E = stainless steel 1.4404 M = brass P = PVC S = PVDF Float Schwimmer Process connection R05 = G ⅛ R10 = G ⅜ R15 = G ½ PG7 = Pg7, 1R6 ... 9AC = connection box with thread or flange connection *Please note: Contact state referred to empty tank. Simply link letters for several contacts. The first letter represents the topmost contact, the second letter the second contact from the top, and so on. The position of the contacts, measured from the sealing edge of the connection screwing,...

Open the catalog to page 2

Magnetic Level Switches for Liquids Model M01-M20 Float designs 1 N/O - N/C = 2 wires / pins 1 changeover = 3 wires / pins ATEX-Certificate: <fx> II 1 GD Ex ia IIC T6 Ga / Ex ia IIIC T85°C Da -20 < Ta < +60°C (LOM 06ATEX2054 X) ^ II 1/2 G Ex d IIC T1 ...T6 Ga/Gb II 2D Ex t IIIC T410 °C Db (LOM 14ATEX2075 X) Mounting instructions Float switches can also be fitted in the bottom of vessels, Important: The contact operation is then reversed. Damping tube for agitated liquids Float switches with damping tube for agitated or dirty liquids can be supplied upon request. Temperature monitoring Float switches...

Open the catalog to page 3

Mini Switches Model M01-M04 Mini Switches Dimensions [mm] Technical Details ATEX Ex ia: Ui: 40 V N/C contact*: 230 VAC/dC / 0.5 A / 10 VA 14 Changeover contact*: 100 VAC/dC / 0.5 A / 3 VA ATEX Ex ia: Ui: 40 V * Note: contact state referred to empty tank and switch point distance refer to a density 1.0 kg/dm3 Cable length: Installation position: Protection type: Min. liquid density: Max. pressure (at 20 °C): Max. temp. PVC cable: Max. temp. silicone cable: Max. length of guide tube: Connection heads: Switch point min. distance from end of meas. tube: Switch point min. distance between contacts:...

Open the catalog to page 4

Mini Switches Model M01-M04 Mini switches Dimensions [mm] Technical Details N/C contact*: Changeover contact*: 230 VAc/dc / 0.5 A / 10 VA ATEX Ex ia: Ui: 40 V 230 VAc/dc / 0.5 A / 10 VA ATEX Ex ia: Ui: 40 V 100 VAc/dc / 0.5 A / 3 VA ATEX Ex ia: Ui: 40 V 14 * Note: contact state referred to empty tank and switch point distance refer to a density 1.0 kg/dm3 08 Cable length: Installation position: Protection type: Min. liquid density: Max. pressure (at 20 °C}: Max. temp. PVC cable: Max. temp. silicone cable: Max. length of guide tube: Connection heads: Switch point min. distance from end of meas....

Open the catalog to page 5

Mini Switches Model M01-M04 Mini Switches Dimensions [mm] Technical Details G% or PG7 N/C contact*: Changeover contact*: 230 VAc/dc / 0.5 A / 10 VA ATEX Ex ia: Ui: 40 V 230 VAc/dc / 0.5 A / 10 VA ATEX Ex ia: Ui: 40 V 100 VAc/dc / 0.5 A / 3 VA ATEX Ex ia: Ui: 40 V * Note: contact state referred to empty tank and switch point distance refer to a density 1.0 kg/dm3 Cable length: Installation position: Protection type: Min. liquid density: Max. pressure (at 20 °C}: Max. temperature: Max. length of guide tube: Connection heads: Switch point min. distance from end of meas. tube: Switch point min. distance...

Open the catalog to page 6

Mini Switches Model M01-M04 Mini switches Dimensions [mm] Technical Details N/O contact*: N/C contact*: Changeover contact*: 230 VAc/dc / 0.5 A / 10 VA ATEX Ex ia: Ui: 40 V 230 VAc/dc / 0.5 A / 10 VA ATEX Ex ia: Ui: 40 V 100 VAc/dc / 0.5 A / 3 VA ATEX Ex ia: Ui: 40 V * Note: contact state referred to empty tank and switch point distance refer to a density 1.0 kg/dm3 Cable length: Installation position: Protection type: Min. liquid density: Max. pressure (at 20 °C}: Max. temp. PVC cable: Max. temp. silicone cable: Max. length of guide tube: Connection heads: Switch point min. distance from end...

Open the catalog to page 7

Standard Switches Model M05-M20 Cylindrical float made of polypropylene Dimensions [mm] Technical Details N/0 contact*: N/C contact*: Changeover contact*: 230 VAc/dc / 1 A / 60 VA ATEX Ex ia: Ui: 40 V 230 VAc/dc / 1 A / 60 VA ATEX Ex ia: Ui: 40 V 230 VAc/dc / 1 A / 60 VA ATEX Ex ia: Ui: 40 V * Note: contact state referred to empty tank and switch point distance refer to a density 1.0 kg/dm3 Cable length: Installation position: Protection type: Min. liquid density: Max. pressure (at 20°C}: Max. temp. PVC cable: Max. temp. silicone cable: Max. length of guide tube: Connection heads: Switch point...

Open the catalog to page 8

Standard Switches Model M05-M20 High-pressure applications Technical Details N/0 contact*: N/C contact*: Changeover contact*: 230 VAc/dc / 1 A / 60 VA ATEX Ex ia: Ui: 40 V 230 VAc/dc / 1 A / 60 VA ATEX Ex ia: Ui: 40 V 230 VAc/dc / 1 A / 60 VA ATEX Ex ia: Ui: 40 V crij * Note: contact state referred to empty tank and switch point distance refer to a density 1.0 kg/dm3 Cable length: Installation position: Protection type: Min. liquid density: Max. pressure (at 20 °C}: Max. temp. PVC cable: Max. temp. silicone cable: Max. length of guide tube: Connection heads: Switch point min. distance from end...

Open the catalog to page 9

Standard Switches Model M05-M20 Cylindrical float and tube made of PVC Dimensions [mm] G% Technical Details N/0 contact*: N/C contact*: Changeover contact*: 230 VAc/dc / 1 A / 60 VA ATEX Ex ia: Ui: 40 V 230 VAc/dc / 1 A / 60 VA ATEX Ex ia: Ui: 40 V 230 VAc/dc / 1 A / 60 VA ATEX Ex ia: Ui: 40 V * Note: contact state referred to empty tank and switch point distance refer to a density 1.0 kg/dm3 Cable length: Installation position: Protection type: Min. liquid density: Max. pressure (at 20 °C}: Max. temp. PVC cable: Max. temp. silicone cable: Max. length of guide tube: Connection heads: Switch point...

Open the catalog to page 10

M

M

Catalog excerpts

All KOBOLD INSTRUMENTATION catalogs and technical brochures

Archived catalogs