Trimod'Besta Catalogue
48Pages

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

Table of contents Worldwide in use Trimod Besta Level Switches 4 Worldwide approved Approvals 5 Quality for your safety Certificates and test reports 6 Modular flexibility Switch-, flange- and float modules 7 Mounting combinations Numerous examples 8 Various Trimod Besta applications Application examples 9 Typical switch combinations Standard Range electric 10 to handle most applications Standard Range pneumatic 14 Specifying your own particular Switch modules electric 21 Trimod Besta level switch ... Switch modules explosion-proof 24 Switch modules pneumatic 26 Flange modules standard 27...

Trimod Besta Level Switches are used worldwide in many industries Oil & Gas 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 explosion-proof housings, custom-made float chamber design and NACE compliance. Shipbuilding 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...

Worldwide approved 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. ClassNK ABS BV DNV-GL LRS R.I.N.A exida Certification S.A. Safety Integrity Level American Bureau of Shipping Bureau Veritas, Hamburg Det Norske Veritas, Oslo Germanischer Lloyd, Hamburg Lloyds...

Quality for your safety Unsere Auftragsnummer Our order number Notre no. de commande Kunde Customer Client Ihre Bestellnummer Your order number Votre no. de commande Wir bestätigen, dass die unten aufgeführten Teile aus folgenden Materialien hergestellt werden: We confirm that the following parts are manufactured of materials as follows: Nous confirmons, que les pièces suivantes sont fabriquées suit: Bezeichnung Description Désignation zu Schaltertyp for switch type pour type de contrôleur Material Material Matière Bescheinigung über Materialprüfungen Certificate of Material Tests...

The unique 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, hermetically sealed microswitches, flameproof housings or pneumatic switch...

With modular compatibility all options are open Side mount combinations 01 ith microswitch or proximity switch, also available in w explosion proof version 02 neumatic switch module with ON/OFF or proportional p output 03 ith enclosure IP68 for underwater installation w 04 or explosion proof applications in a pressure-capsulatf ed housing with microswitch or proximity switch 05 ith heat exchanger for very high or very low operating w temperatures 06 quare standard flanges made of CrNiMo, 92 mm pitch s circle diameter 07 ndustrial flange acc. to EN/DIN, ANSI, BS and JIS i made of PP and PTFE...

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

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 21 to 36. For accessories, such as test actuators, counterflanges and float chambers see pages 38 to 42....

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) 253 mm approx. 2 kg min. 0.75 kg/dm3 SIL 1 (Types AA 01 051 to AA 01 054: SIL 2) All other technical data as type A 01 04 Type U3A 01 04 to U11A 01 04 - Fo r submersible applications -30 to 80°C Operating temperature -30 to 80°C Ambient temperature Sea water resistant die cast aluminium Enclosure switch housing is pressure tight up to 100 meters WC (Water...

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. PN 25, max. 25 bar up to 300°C 0 to 300°C 0 to 70°C min. 0.75 kg/dm3 (A 01 095: min. 0.9 kg/dm3) see table Stainless steel (CrNiMo) Stainless steel (CrNiMo) Sea water resistant die cast aluminium square 92 x 92 mm, PCD 92 mm see page 38 Microswitch SPDT with silver contacts 250 VAC, 5 A 30 VDC, 5 A IP65 approx. 2 kg SIL 1 (Types AA 01 090 to AA 01 095: SIL 2) Nominal pressure Operating temperature Ambient temperature Density of liquid...

13 Type A 01 140 to A 01 141 - For vertical mounting Nominal pressure Operating temperature Ambient temperature Density of liquid pump control alarm Operating differential S Wetside material Flange material Housing material Flange dimensions Counterflange Switch element Switch rating Enclosure Weight Safety Integrity Level (SIL) Stainless steel (CrNiMo) Stainless steel (CrNiMo) Sea water resistant die cast aluminium square 92 x 92 mm, PCD 92 mm see page 38 Microswitch SPDT with silver contacts 250 VAC, 5A 30 VDC, 5A IP65 A 01 140: 2.5 kg, A 01 141: 2.7 kg SIL 1 (Types AA 01 140 to AA 01...