YOKOGAWA ST401G, User Manual, Page: 62 / 89

< 3. INSTALLATION, PIPING AND WIRING >
3-47
IM 12A0V2-E
Flow-Through type holder
(PH8HF)
pH converter
(FLXA402)
Sensor cable
(Customer wiring)
pH sensor (PH8EFP)
(Customer installation)
Customer
wiring
Power
Ground
Customer
wiring
*1: Be sure to ground the case ground terminal, or if this is not possible then connect to G of power wiring.
Avoid two-point ground. (Case is connected to signal ground inside converter).
*2: Use cable with 9 to 12 mm OD.
*3: Use two-core shielded cable with 9 to 12 mm OD. Avoid two-point ground.
*1
*3
*2
*1
(Note) For the jumper wiring, refer to user’s manual of FLXA402.
N
L
(S)16
(GE)15
(SE)14
(T1)11
(T2)12
(RE)13
IMPLOW18
61(+)
62(-)
63
S1 to S3
S4
mA1
Jumper
(Note)
Figure 3.46 ST401G-PH6-N-A With pH converter (FLXA402)
(Customer wiring)
Customer
wiring
U1
U2
S
pH holder
(PH8HF)
pH converter
(FLXA402)
Ultrasonic oscillator
(PUS400G)
L2
L1
Sensor cable
Ultrasonic oscillator
cable
GRN
YEL
YEL
YEL YEL
YEL
YEL
GRN
YEL
YEL
G
Power, Ground
L1
L2
G
Terminal box
L2
L1
G
L2
L1
CB1
GRN G
L2
L1
CB1: Circuit breaker
(Note 2) * Dotted wiring is external wiring and should be prepared by customer.
* Use two-core shielded cable with 9 to 12 mm OD for output wiring.
Avoid two-point ground.
* Ground the G terminal of power wiring.
L
N
mA1
(S)16
(GE)15
(SE)14
(T1)11
(T2)12
(RE)13
IMPLOW 18
61(+)
62(-)
63
S1 to S3
S4
Jumper
pH sensor (PH8EFP)
(Customer installation)
(Note 1) For the jumper wiring, refer to user’s manual of FLXA402.
(Note 1)
Figure 3.47 ST401G-PH6-U-A With pH converter (FLXA402), ultrasonic oscillator