Description
PEPPERL+FUCHS
TYPE NO: Z667/EX
BARRIER DIODE
BASEEFA NO: EX822097
UM = 250V
UZ = 17.4V
IMAX OUT = 148MA PER CHANNEL
MAX AMB TEMP 55°C
MADE IN ENGLAND
The Pepperl+Fuchs Z667/EX is a barrier diode unit, certified under BASEEFA number EX822097, used in shipboard control and instrumentation circuits. It acts as a safety barrier between the safe-area control system and field devices in hazardous locations, holding output to a 17.4 V Zener voltage and a maximum of 148 mA per channel. Its Um rating is 250 V, and it is rated for a maximum ambient temperature of 55°C. The unit is supplied in used condition and was made in England.
Key Features
✓ BASEEFA certificate EX822097
✓ Um rating 250 V
✓ Zener voltage Uz 17.4 V
✓ Maximum output 148 mA per channel
✓ Maximum ambient temperature 55°C
Marine Applications
✓ Intrinsically safe level sensor loops in cargo and fuel tanks
✓ Pump room gas detection and switch circuits
✓ Hazardous-area instrumentation on tankers and gas carriers
✓ Control panels feeding Ex field devices
Technical Support
Prota Marine provides technical support, repair and onboard installation for the barrier diode and the wider marine control system. Our engineers handle fault diagnosis on barrier-protected signal circuits and provide commissioning support when the unit is returned to service.
