
3.5 Connection of transmitter and accessorial transmitter PH-300T
A.
Connect the GLASS point of transmitter PH-300T’s terminal to the electrode coaxial inner.
(
Note:
Remove the black conductive rubber); connect the REF point of transmitter PH-300T’s
terminal to the electrode coaxial shield.
B.
Regarding two-wire distributing system and three-wire distributing system please refer to ch3.6.
C.
Sign “PT-1000” on transmitter PH-300T’s terminal is the connector for automatic temperature
compensation probe, PT-1000, or applies a fixed temperature compensation resistance.
D.
The V+ and V- of transmitter PH-300T’s terminal respectively connect to DC12V+ and – of the
transmitter.
E.
The S+ and S- on transmitter PH-300T’s terminal respectively connect to GLASS and REF of
the transmitter.
F.
The I+ and I- on transmitter PH-300T’s terminal are output (4-20mA), which can connect to
devices that receive current signals.
Note:
1. Do not share the same power supply with more transmitters at a time under 2-wire
distributing system.
2. As the current output signal of transmitter is not insulated, it is unavailable to connect
with PC or PLC; or it would do damage on electrodes.)
Refer to the following table for proper fixed temperature compensation resistance
Temperature
0
°
C
5
°
C
10
°
C
15
°
C
20
°
C
R value
1000Ω
1019.25Ω
1038.5Ω
1057.75Ω
1077Ω
Temperature
25
°
C
30
°
C
35
°
C
40
°
C
45
°
C
R value
1096.25Ω
1115.5Ω
1134.75Ω
1154Ω
1173.25Ω
Temperature
50
°
C
55
°
C
60
°
C
65
°
C
70
°
C
R value
1192.5Ω
1211.75Ω
1231Ω
1250.25Ω
1269.5Ω
Temperature
75
°
C
80
°
C
85
°
C
90
°
C
100
°
C
R value
1288.75Ω
1308Ω
1327.25Ω
1346.5Ω
1385Ω
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