Version 2.6
Operating instructions
AFGUARD
®
Zone 0 and Zone 1
Page:
23
of:
41
FAUDI Aviation GmbH, Scharnhorststraße 7 B, D-35260 Stadtallendorf
BA_AFGUARD_Ex_rev2.6_Englisch_l
ogo
6 Commissioning
Before first commissioning, check if:
o
the sensor is correctly installed.
o
the electrical connection is correct and was carried out by trained specialists as per
the regulations currently in force.
6.1
Check of Installation and function
Warning!
Before applying pressure to the system, make sure the connections are correctly fitted.
Check the cabling and electrical installation.
Do not paint or stick anything to the housing of the sensor. Especially when using the
Hazardous Area approved AFGUARD
®
.
Make sure that the AFGUARD
®
is connected to an isolating converter with transmitter
supply.
Picture for Installation and functioning check
The following procedure is recommended to check the functionality of the AFGUARD
®
if
there is no response during installation and start up.
Keep a digital current meter ready for use.
1. Connect the AFGUARD with supply voltage in the range between 16 VDC and 30VDC
brown =
+Ub
blue
=
–Ub
2. Connect the digital current meter at the 4 to 20 mA outlet (blue cable) against
–Ub.
3. Check the output signal (electrical current):
No signal:
Cable / Connector damaged
– check if the cable is broken
< 3,8 mA:
Self check / Sensor damaged
Between 4..20 mA:
AFGUARD
®
submerged in Jet Fuel
> 20,2 mA:
AFGUARD
®
in Air or submerged in Water