Setra System Model 869 - Manual (Page 25)

32
Electrical Lines
Unit Under Test
(Model 260)
Pneumatic Lines
Diagram 22
_
+
EXC
24VDC
SIG
(+)
SIG
(-)
COM
Current Internal
Excitation
EXC COM SIG
EXC
24VDC
SIG
(+)
SIG
(-)
COM
3-Wire Internal
Excitation
EXC
24VDC
SIG
(+)
SIG
(-)
COM
4-Wire Internal
Excitation
EXC COM +SIG -SIG
_
+
EXC
24VDC
SIG
(+)
SIG
(-)
COM
_
Current External
Excitation
+ External
Power
Supply
EXC COM SIG
EXC
24VDC
SIG
(+)
SIG
(-)
COM
3-Wire External
Excitation
_ + External
Power
Supply EXC
24VDC
SIG
(+)
SIG
(-)
COM
4-Wire External
Excitation
EXC COM +SIG -SIG
_ + External
Power
Supply
Diagram 23
EXC
24VDC
SIG
(+)
SIG
(-)
COM
P-Switch SPST
Unit Under Test
(Model 269)
EPIC Cable
EPIC Cable Plug
(Calibrator End)
EPIC Cable Plug
(UUT End)
Standard 869
869 Expert System
25
6.6 VIEW A REFERENCE SETUP
Screen Instructions (Diagram 16):
1. Tap the REF tab to view the different reference data.
2. Tap on REF 1 or REF 2 radio button.
Reference Setup - The Model 869 is shipped with either one or two inter-
nal reference transducers and are referred to as REF 1 or REF 2 respec-
tively. REF 1 is the lowest range and REF 2 is the highest range. If only
one reference is installed, it will be located in REF 1.
REF ID - the serial number of the reference unit.
Input/Output Parameters - This section tells you the pressure range and
the output of the reference transducer.
Tare Button - Allows the user to “zero” the reference unit.
Reference Location - Shows the high and low ranges of the reference
unit, (the Model 869 automatically selects the proper reference sensor
according to the full scale range of the presently selected UUT).
Diagram 16
Select Reference
Number
Select Reference
Tab