Engineering Information | LNG/LPG application Trimod Besta Level measurement A brand of Bachofen AG www.trimodbesta.com Features of Trimod Besta Level Switches ■ Designed for low temperature applications down to -196°C ■ Suitable for densities as low as 0.32 kg/dm3 ■ Extremely robust and outstanding lifespan ■ Easy, fast and safe installation ■ Safety integrity level: SIL1 and SIL2 (SIL3 capable) ■ Approved by various ship register: ABS, BV, DNV-GL, LRS, RINA, RMRS, Class NK ■ Certified acc. to ATEX, IECEx, EAC Ex (Russia), ISO 9001 Applications for Trimod Besta Level Switches ■ For high and low alarm at reliquefaction plant. See page 3 to 10. ■ For leakage monitoring, installed between hull and LNG/LPG tanks or within the double hulls. See page 11. ■ For high and low alarm as well as for pump control in fuel oil, lubrication oil and balast tanks, in the bilge, in drinking-, grey- and blackwater tanks, in incinerator units and many more. See page 16.

Engineering Information | LNG/LPG application Trimod Besta Engineering Information | LNG/LPG application Trimod Besta The 3-modular concept offers an unlimited variety of switches Horizontal mounting Switch modules ■ Electric switch elements (Microswitch) ■ Electronic switch elements (Proximity switch) ■ Pneumatic switch elements (ON/OFF and proportional output) ■ Explosion proof versions (Ex ed and Ex ia) ■ Enclosure: IP65, IP66/67, IP68 ■ Aluminium and stainless steel housing ■ Low/high temperature modules (-196°C to +400°C) Flange modules ■ Square flange, 92 x 92 mm, bolt circle 92 mm ■ Round...

Engineering Information | LNG/LPG application Trimod Besta Main criterias for switch type selection 1. Ambient and operating (process) temperature 2. Minimum density of the liquid 3. Process pressure 4. Explosion proof design (Ex ed or Ex ia) Minimum density and process temperature range for switch type ZK... (Ex ed) 1.00 0.80 0.60 0.50 0.44 0.40 0.32 0.20 Minimum density and process temperature range for switch type B8... (Ex ia) 1.00 0.80 0.60 0.50 0.44 0.40 0.32 0.20 0.00

Engineering Information | LNG/LPG application Trimod Besta Type ZTDK8E28 011Z 76 TDB8E28 011Z 76 Ex ed (ATEX), min. density: 0.4 kg/dm3, Ex ia (ATEX), min. density: 0.4 kg/dm3, min. operating temperature: -196°C min. operating temperature: -196°C Nominal pressure Operating temperature a) Ambient temperature a) Density of liquid Operating differential Wetside / flange material Housing material Housing gasket Flange dimensions Flange gasket b) Switch element Switch rating Safety classification Certificate Enclosure Safety integrity level PN 25 acc. to DIN -196°C to +270°C -45°C to +80°C min. 0.4...

Engineering Information | LNG/LPG application Trimod Besta Engineering Information | LNG/LPG application Trimod Besta ZTDK8E2801 07 Ex ed (ATEX), min. density: 0.5 kg/dm3, min. operating temperature: -196°C TDB8E28 01 07 Ex ia (ATEX), min. density: 0.5 kg/dm3, min. operating temperature: -196°C Nominal pressure Operating temperature a) Ambient temperature a) Density of liquid Operating differential Wetside / flange material Housing material Housing gasket Flange dimensions Flange gasket b) Switch element Switch rating Safety classification Certificate Enclosure Safety integrity level PN 25 acc....

Engineering Information | LNG/LPG application Trimod Besta ZK8E28 011ZE217 76 Ex ed (ATEX), min. density: 0.32 kg/dm3, min. operating temperature: -30°C DB8E28 011ZE217 76 Ex ia (ATEX), min. density: 0.32 kg/dm3, min. operating temperature: -40°C Nominal pressure Operating temperature a) Ambient temperature a) Density of liquid Operating differential Wetside / flange material Housing material Housing gasket Flange dimensions Flange gasket b) Switch element Switch rating Safety classification Certificate Enclosure Safety integrity level PN 25 acc. to DIN -30°C to +145°C -45°C to +80°C min. 0.32...

Engineering Information | LNG/LPG application Trimod Besta ZK8E28 01E217 07 Ex ed (ATEX), min. density: 0.44 kg/dm3, min. operating temperature: -30°C DB8E28 01E217 07 Ex ia (ATEX), min. density: 0.44 kg/dm3, min. operating temperature: -40°C Nominal pressure Operating temperature a) Ambient temperature a) Density of liquid Operating differential Wetside / flange material Housing material Housing gasket Flange dimensions Flange gasket b) Switch element Switch rating Safety classification Certificate Enclosure Safety integrity level PN 25 acc. to DIN -30°C to +145°C -45°C to +80°C min. 0.44 kg/dm3...

Engineering Information | LNG/LPG application Correlation of operating and ambient temperature of switch types ZK… (Ex ed) Operating temperature [°C]

Engineering Information | LNG/LPG application Correlation of operating and ambient temperature of switch types BE… (Ex ia) Operating temperature [°C]

Engineering Information | LNG/LPG application Trimod Besta Engineering Information | LNG/LPG application Trimod Besta Ex min. temperature range density ambient operating Minimum density and temperature range Switch type

Engineering Information | LNG/LPG application Trimod Besta The level switch can be placed outside of the LNG tanks or within the double hulls. Type 2DB8E275 01 04G3E276 Ex ia (ATEX), min. density: 0.4 kg/dm3 min. operating temperature: -30°C Nominal pressure Operating temperature Ambient temperature Density of liquid Operating differential Wetside / flange material Housing material Flange dimensions Switch element Switch rating Safety classification Certificate Enclosure Pneumatic connection Air pressure PN 16 acc. to DIN -30°C to +120°C a) -30°C to +120°C a) approx. 0.40 kg/dm3, depending on...

Engineering Information | LNG/LPG application Trimod Besta Counterflanges The simplest method of installing any Trimod‘Besta level switch of the Standard range is to use our weld-on counterflanges in carbon steel (-10 to +300°C) or stainless steel (-196 to +400°C) Standard Version Version for use with test actuator (type 2382, 2383, 2384E217) Test actuators i he test actuators can be used, if the thank is already equipped with a Trimod’Besta counterflange. Operating pressure: -1 to 25 bar O-ring Flat gasket FPM Blue Gard 3000 EPDM Blue Gard 3000 VMQ Graphite EPDM Ethylen-Propylen-Dien-Rubber...