Example for
Resistive
Transducers
Hi
Lo
Guard
Current Hi ( - )
Current Lo ( + )
Guard
Lo
Hi
Lo
Hi
Guard
Lo
Hi
Example for
Thermocouples
Example for
Powered
Transducers
Lo
Hi
Shield
Shield
Shield
Shield
Shield
power
power
power
power
P
to
V
P
to
V
pressure
pressure
A
B
C
D
E
Shield
Device
Under Test
Device
Under Test
Device
Under Test
Device
Under Test
Guard
Remove Jumper to
break Ground Loop
(shield connected to
ground at transducer)
Leave Jumper
in Place
(transducer floating)
Remove Jumper to
break Ground Loop
(shield connected to
ground at transducer)
Guard
Leave Jumper
in Place
(transducer floating)
Jumper may be left in
place, since Current Lo( + )
is at HP E1413 GND Potential
Figure 2-8. Preferred Signal Connections
44 Field Wiring
Chapter 2
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