Level Switch Catalogue Level measurement A brand of Bachofen AG www.trimodbesta.com

Table of contents Worldwide in use Experts trust us Quality for your safety The unique three-modular level switch system Mounting combinations Various Trimod Besta applications Typical switch combinations to handle most applications Specifying your own particular Trimod Besta level switch ... Accessories which save time, labour and expense Trimod Besta in hazardous areas Electrical data to assist type selection Trimod Besta level switches 4 Certificates and test reports 6 Switch-, flange- and float modules 7 Standard Range electric 10 Standard Range pneumatic 14 Switch modules electric 20 Switch...

Trimod Besta level switches are used worldwide in many industries Power Generation Bachofen Ltd. has extensive experience in the offshore industry. Some important features of the Trimod Besta product range for oil & gas applications include stainless steel housings in explosion-proof design and NACE compliance if required. Trimod Besta level switches are specified by the worlds major shipyards and owners. Much of Bachofen’s product development and design has evolved from experience within the marine industry such as fully submersible housings and captive terminal components. Trimod Besta level...

Experts trust us Trimod Besta level switches have been examined and approved by the most important and internationally recognized organisations. Numerous approvals together with periodic audits warrant continuous quality control throughout the production process. The list of approvals for Trimod Besta level switches and accessories is growing continuously. Contact us, for up to date information or go to www.trimodbesta.com for current certificates. ClassNK American Bureau of Shipping ABS Lloyds Register of Shipping LRS Registro Italiano Navale Nippon Kaiji Kyokai Safety Integrity Level Bureau...

Quality for your safety Test report 2.2 acc. to EN 10204 For flange and float materials of the level switches, counterflanges and test actuators. Inspection certificate 3.1 acc. to EN 10204 For flange materials of the level switches, counterflanges and the intermediate part of the test actuators. Test certificate - function test For Trimod Besta level switches (electr. function test, pneumatic function test etc.) Certificate of compliance with order 2.1 acc. to EN 10204 Confirmation that the products meet the requirements of the order. The following official Bachofen certificates and test reports...

The unique three-modular level switch system What you need ... Trimod Besta’s modular design is a unique deviation from conventional level switch construction. This modular system allows individual and numerous combinations of float, flange and switch modules to suit your specific requirements. Switch modules are available with electric, electronic or pneumatic output signals. Switch housings are standard to IP65 enclosure, but depending on environmental conditions IP66, IP67 or IP68 must be chosen. For hazardous areas explosion-proof switch modules can be used. ... is quickly installed ... Trimod...

Side mount combinations 01 with microswitch or proximity switch, also available in explosion proof version 02 pneumatic switch module with ON/OFF or proportional output 03 with enclosure IP68 for underwater installation 04 with heat exchanger for very high or very low operating temperatures 05 square standard flange made of CrNiMo, 92 mm pitch circle diameter 06 i ndustrial flange acc. to EN/DIN, ANSI and JIS made of PPand PTFE 07 i ndustrial flange acc. to EN/DIN, ANSI and JIS made of CrNiMo and Hastelloy 08 with fixed operating differential 09 with rod extension for longer operating differentials...

Application examples Alarm, limit and control functions with Trimod Besta Max/min limits Pneumatic control high alarm Pump and valve control Pump and valve control Separation layer control External level control high / low alarm pump on

Typical Standard Range switches to handle the majority of applications The characteristic of a Trimod Besta level switch of the Standard Range is the square flange in stainless steel with bolt holes on a 92 mm PCD and a nominal pressure rating of PN 25. The following pages show the level switches which are most commonly used. However, countless more combinations of types are possible. Detailed information can be found on all the modules available with the possible combinations on pages 20 to 34. For accessories, such as test actuators and counterflanges see pages 36 to 37. Type A 01 04 – For...

11 Type A 01 051 to A 01 054 - For contaminated or crystallizing media. Bellows to prevent jamming of the float mechanism. Bellow materials Operating temperatures Mounting length Weight Density of liquid Safety Integrity Level (SIL) All other technical data as type A 01 04 Operating- / Ambient temperature 0 to 40°C** Housing material Sea water resistant die cast aluminium switch housing is pressure tight up to 100 meters WC (Water column) Length of encapsulated cable U3A 01 04 3 m Safety Integrity Level (SIL) SIL 1 All other technical data as type A 01 04 * Use in dry, damp or wet environments...

Type A 01 090 to A 01 095 - For adjustable operating differential These level switches are mainly used for two-point operation, for example pump control. Stainless steel (CrNiMo) Stainless steel (CrNiMo) Sea water resistant die cast aluminium square 92 x 92 mm, PCD 92 mm see page 36 Microswitch SPDT with silver contacts 250 VAC, 5 A 30 VDC, 5 A IP65 Nominal pressure Operating temperature Ambient temperature Density of liquid Operating differential S Wetside material Flange material Housing material Flange dimensions Counterflange Switch element Switch rating Enclosure Safety Integrity Level (SIL)...

Txte Type A 01 140 to A 01 141 – For vertical mounting Nominal pressure Operating temperature Ambient temperature Density of liquid Operating differential S Wetside material Flange material Housing material Flange dimensions Counterflange Switch element Switch rating Enclosure Weight Safety Integrity Level (SIL) PN 16, max. 16 bar up to 300°C 0 to 300°C 0 to 70°C Pump control: min. 0.45 kg/dm³ Alarm: min. 0.30 kg/dm³ A 01 140: 12 to 1340 mm A 01 141: 12 to 2840 mm Stainless steel (CrNiMo) Stainless steel (CrNiMo) Sea water resistant die cast aluminium square 92 x 92 mm, PCD 92 mm see page 36...