09-2018
file: ISAFE3-OperationManual_EN_DE.R4.VEXH.docx
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Vallen ISAFE3 Operation Manual - Operation Manual
Non Hazardous Area
Cable A-1
Cable A-1: RG58 C/U 50R coaxial
Cable B-1
Uncertified apparatus,
powered e.g. by 230 V AC
Cable B-2
Cable B-2: one wire 4 mm
2
copper or
two wires 1,5 mm
2
copper
Cable B-1: RG58 C/U 50 R coaxial or
E&E 29392-1
SMA
ISAS3-xxx
Intrinsically
safe sensor
element
Hazardous Area /
Zone 0 (or 1)
SISO3-xx
Intrinsically
safe signal
isolator
SMA
BNC
BNC
Control
Unit
HISO3-xx
DIN
Rail
PE
L1
N
220k
L1
N
Figure 9-1 Block Diagram for use of ISAS3 in zone 0 (or 1, or 2) and SISO3 and Control Unit in
non-hazardous area
9.6
Functional verification
Usage and functional verification of a set of ISAS3 & SISO3 shall be made as with any other AE
sensor model, e.g. by verifying the response on a pencil lead break or the response on the
artificial AE as generated by a pulsing sensor nearby. When used with a Vallen AE system,
defining SISO3-xx dB (xx means the gain setting 14, 20 or 26 dB) as input device will
automatically select the correct settings for pulsing method (AST), power supply (28 V) and gain
(xx). Pulse amplitude can be modified by varying the pulse-width in the pulser setting dialogue
in acquisition software.
With the first installation and during each periodical maintenance of the test object it is
recommended to perform a functional verification of sensors, signal isolator and AE system as
described in EN 13477-2:2010 (English).
9.7
Maintenance
There are no maintenance requirements other than described in EN 13477-2 which applies to
all kind of AE equipment.
9.8
Adjustment
There are no adjustments needed or possible for the user with the exception of SISO3 gain
setting to either 14, 20 or 26 dB.
