SandAlert Lite 2
nd
Edition
Page
22
Output Offset Voltage vs Cable Length
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0
50
10
0
15
0
20
0
25
0
30
0
35
0
40
0
45
0
50
0
55
0
60
0
65
0
70
0
75
0
80
0
85
0
90
0
95
0
10
00
Cable Length (m etres)
O
u
tp
u
t O
ffs
e
t V
o
lta
g
e
(V
o
lts
)
Pulsarguard 2011 (ATEX)
This sensor is the same as Senaco except it has been approved under ATEX, the specification and
use are the same as Senaco.
See specific manual for details.
7.2 PULSARguard 2001 (Superceded by ATEX Version)
Is designed to be more sensitive to sand and less prone to flow noise making it ideal for use on gas
and multi phase wells.
The sensor is a Pulsar Process Measurement intrinsically safe acoustic sensor. The sensor is housed
in a robust cast Type 316 stainless steel enclosure. The Sensor is called the PulsarGuard 2001 and
is intrinsically safe, certified to EEx ia IIC T4
Explanation of the IS approval description:
EEx
denotes a CENELEC approval.
ia
denotes the device is intrinsically safe category ‘ia’, and therefore is suitable for all
zones (0, 1 and 2).
IIC
denotes the gas group. Group IIC, typical gas hydrogen..
T4
denotes the temperature classification.
The sensor housing is rated at IP68 giving protection against temporary immersion to a depth of 3
metres.
The sensor is powered from a power supply via galvanic safety barriers, both of which are housed
in the SandAlert Lite unit.
Pulsarguard 2001 (ATEX)
This sensor is the same as Pulsarguard 2001 except it has been approved under ATEX, the
specification and use are the same as Pulsarguard.
See Specific manual for details.