
2.5 Illustration and description of the square junction box
i.
2-wire distributing system:
i.
Two-wire distributing system
Labels on square junction box
Terminals on transmitter
INPUT terminals
Terminal No.
OUTPUT terminals
(7202-RG-58)
(7202-F94009-BK)
Coaxial inner from sensor
GLASS (1)
Coaxial inner
GLASS
Coaxial shield from sensor
REF (2)
Coaxial shield
REF
Green wire from temp. probe
SG (3)
Green wire
SG
Red wire from temp. probe
TP (4)
Red wire
ATC
Alternative
NC (0, 5, 6, 7)
Alternative
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Note:
It is necessary to make REF and SG
short-circuited as 2-wire distribution
system is applied (with a built-in
jumper between them).
w/o a temp. probe
Use coaxial shield wire 7202-RG-58
w/ a temp. probe
Use coaxial 4-core wire 7202-F94009-BK
(8-09)
IN
OUT
Square junction box
pH/ORP
sensor
Temp. probe
Transparent
Transparent
Transparent
Shield
Shield
Shield
Green
Green
Green
Red
Red
Red
Black (NC)
IN
OUT
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