Visit our website for the most complete, up-to-date information The Vis-U-TecTM and electronic Vis-U-TecTM sensors are pressure sensing devices. The sensor provides a visual warning that a pressure event has occurred (see image to the right). Instant warning of a ruptured disk can reduce plant downtime, product loss and environmental pollution. When the Vis-U-Tec senses a differential pressure of 10 psig (0.69barg) downstream of the rupture disk indicating a burst or leakage scenario, the piston will move to its fully extended position providing a visual warning of the ruptured disk. The electronic Vis-U-Tec provides an electrical signal and visual warning of a ruptured disk when used with a BS&B Burst Disk MonitorTM, Rupture Disk ManagerTM or other suitable electrical monitoring equipment. The movement of the piston causes a break in the sensor’s conductive circuit. The disruption of the current flowing through the circuit provides an electrical signal which activates a burst disk monitor or other suitable electrical monitoring equipment to give an audible and / or visual signal. All wetted parts that may come in contact with process fluids are 316 stainless steel for both the Vis-U-Tec and electronic Vis-U-Tec sensors. The standard piston material is aluminum with optional SST. The piston is sealed with a Viton® O-ring. Vis-U-TecTM Body Piston The Vis-U-Tec sensor is fitted to the outlet of the safety head or piping using a 1/4 inch (6.35mm) NPT screw connection. The Vis-U-TecTM will provide warning of a ruptured disk. • Relief Valve Isolation - Used alone or in addition to the standard Telltale Indicator* • Double Disk Assembly - Installed in the midflange between both rupture disks • Free VentingBody Disks - Venting to the atmosphere or into down stream piping • Other Applications - On Piston storage, process vessels or equipment to warn of an increase in pressure of / or above 10 psig (0.69barg) *Nipple, cross, gauge and excess flow valve Viton is a registered trademark of DuPont Dow Elastomers L.L.C. ® Heat shrink Reed switch When a ruptured disk has been replaced, the Vis-U-Tec sensor may be reset by pushing the piston back fully into the unit. Heat shrink tubing Reed switc

Electrical Components Each electronic Vis-U-Tec is supplied with a 12 inch (30cms) two-conductor cable. The sensor is Body supplied without an electrical connector. Consult Body BS&B or your local representative for connector options. Free venting disk Disk size Minimum burst pressure Maximum current 250 mA Maximum voltage 24Vdc Electrical Specification For (1/4” NPT) larger disk sizes, consult BS&B. Electronic Vis-U-TecTM The maximum burst pressure is 2,000 psig (137.89barg). Values are based on using a free vented outlet flange with no down stream piping Reed switch Heat shrink tubing Reed...