ANNEXES
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Manual EC 24 · EN05 · 2015-02
32
C Specifications
Temperature ranges
Type: EC 21 / 24 II2 G Ex ib IIC T4 from -20°C to +40°C
II2 G Ex ib IIC T3 from -20°C to +60°C
In the case of special designs, even higher or lower fluid temperatures are possible with not
explosion-protected (Non-Ex) versions.
Device types
Reed
Supply Internal battery (Ex),
or
external 24 V supply via current-loop connection by means of an
intrinsically safe power supply unit, e.g. KFD2-STC3-Ex1 (Ex) plus battery
pack.
Pulse input Reed or transistor
Current output Only possible via the current-loop connection.
Standby battery Only in conjunction with the current-loop connection.
Wiegand
Use Direct installation onto the TERZ 94 meter instead of the meter head.
Supply Internal battery (Ex),
or
external 24 V supply via current-loop connection by means of an
intrinsically safe power supply unit, e.g. KFD2-STC3-Ex1 (Ex) plus battery
pack.
Pulse input Wiegand
Current output Only possible via the current-loop connection.
Standby battery Only in conjunction with the current-loop connection.