Wiring Example For Ph Transmitter - Mettler Toledo M300 Guía De Ajuste Rápido

TB3/TB4 for 1 ⁄ DIN and
2
pH
Term. Function
1 Glass
2 –
3 Reference**
4 Solution GND/ green/yellow
Shield**
5 –
6 RTD ret/GND
7 RTD sense
8 RTD
9 +5V
4 Wiring example for pH Transmitter (using TB3 or TB4)
pH measurement with monitoring of glass electrode
SG (Solution
Ground)
Temperature
probe
1 ⁄ DIN versions
4
Redox (ORP)
Color* Function
tansparent Platinum
– –
red Reference bare shield
–
and blue
– –
white –
– –
green –
– –
9
8
7
6
5
4
Jumper if
pH electrode
3
without SG
2
1
Cable
Combination
pH electrode
with RTD
and SG
ISM Sensor
Color Function
transparent*** 24 VDC
– GND (24 VDC) –
1-wire
– GND (5 VDC)
– –
– GND (5 VDC)
– RS485–
– RS485+
– 5 VDC
9 +5V
8 RTD
7 RTD sense
6 RTD ret/GND
5 not used
4 Solution GND/Shield
3 Reference
2 not used
1 Glass
Note: Wire colors only valid for connection with
VP cable, grey not connected.
Note: Pt100 Adapter required for Pt100 sensors.
For wiring details see M300 manual page 24.
* Grey wire
not used.
Color
** For pH without
–
solution ground,
install jumper
Cable core
3 to 4.
Shield
*** remove black
coating.
–
–
–
–
–
7