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6
BF symbol: Body-
protected equipment
The three symbols are:
•
BF (body protected) symbol. This means that the input connectors are
suitable for connection to humans provided there is no direct electrical
connection to the heart.
•
CF (cardiac protected) symbol. This means that the input connectors are
suitable for connection to human subjects even when there is direct
electrical connection to the heart.
•
Warning symbol. The exclamation mark inside a triangle means that the
supplied documentation must be consulted for operating, cautionary or
safety information before using the device.
Further information is available on request.
Bio Amp Safety Instructions
The Bio Amp inputs displaying any of the safety symbols are electrically
isolated from the mains supply in order to prevent current flow that may
otherwise result in injury to the subject. Several points must be observed for
safe operation of the Bio Amp:
•
All Bio Amp front-ends (except for the ML138 Octal Bio Amp) and
PowerLab units with a built-in Bio Amp are supplied with a 3-lead or 5-
lead Bio Amp subject cable and lead wire system. The ML138 Octal Bio
Amp is supplied with unshielded lead wires (1.8 m). Bio Amps are only
safe for human connection if used with the supplied subject cable and lead
wires.
•
All Bio Amp front-ends and PowerLab units with a built-in Bio Amp are
not defibrillator-protected. Using the Bio Amp to record signals during
defibrillator discharges may damage the input stages of the amplifiers.
This may result in a safety hazard.
•
Never use damaged Bio Amp cables or leads. Damaged cables and leads
must always be replaced before any connection to humans is made.
CF symbol: Cardiac-
protected equipment
Bio Amp Owner's Guide
!
Warning symbol: 'see
documentation'
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