Endress+Hauser Waterpilot FMX21 - Safety Instructions: Installation

Waterpilot FMX21 XA02555P-A
Endress+Hauser 7
Safety
instructions:
Installation
(+)
(–)
A
B
1
A0033644
 1
A Zone 1, Zone 2
B Zone 1
1 Only for Basic specification, Position 4 = 1, 2
• When the devices are connected to certified intrinsically safe circuits
of Category Ex ib, the type of protection changes to Ex ib.
• When interconnecting intrinsically safe circuits, take into account
sensor capacitance and lengthdependent cable capacitance and
inductance (see "Connection data" chapter).
• The intrinsically safe input power circuit of the device is isolated from
ground. The dielectric strength is at least 500 V
rms
.
• When shortening the length of the cable: Ensure that the dielectric
strength is maintained for connection wires and earth grounded
screen.
• Connect cable screen to earth ground of the installation.