Sineax SI 815 Passive DC Signal isolator

Signal isolator for electrically isolating the 4 to 20 mA measuring/supply circuit of a measuring transducer with 2-wire connection. The device fulfils two functions simultaneously.

• It provides for electrical isolation and
• it transmits the supply power component of the signal, i.e. auxiliary power, to the measuring transducer without feeding anything to the circuit itself. Accordingly, the isolator does not include any auxiliary power terminals.

Certain variants of the SINEAX Si815 are FSK compatible (frequency shift keying). They are used for dialog-capable "intelligent" measuring transducers with FSK technology and HART or a company-specific protocol.