9
3.
Setup
and
Operation
a.
Probe
Selection
Switches
Housed
within
the
MS2600E
enclosure
are
probe
selection
switches
which
allow
the
instrument
to
be
set
for
any
standard
ER
probe
type.
They
also
allow
the
instrument
to
be
placed
into
several
test
modes
which
output
fixed
values,
allowing
verification
of
the
current
loop
connection
and
DCS
program.
Figure
5.
Connector
and
Switch
Details
Setting
Switch
1
Switch
2
Switch
3
Switch
4
Operating
Positions
Wire Loop
Off (
↓
)
On (
↑
) On
(
↑
)
Off (
↓
)
Tube Loop/Flush
On (
↑
)
Off (
↓
)
On (
↑
)
Off (
↓
)
Cylindrical
*
Off (
↓
)
Off (
↓
)
On (
↑
)
Off (
↓
)
Test
Positions
4mA Output
On (
↑
)
On (
↑
)
Off (
↓
)
Off (
↓
)
20mA Output
Off (
↓
)
On (
↑
)
Off (
↓
)
Off (
↓
)
4-20mA Sweep
On (
↑
)
Off (
↓
)
Off (
↓
)
Off (
↓
)
Table
2.
Probe
Switch
Settings
*Cylindrical
probe
setting
is
illustrated.
Probe
Selection
Switch
(See
detail
below)
4
‐
20mA
Current
Loop
Connector
Probe
Cable
Connector
