Thermo Fisher Scientific Eutech 2700 Series - Manual (Page 8)

4
Meter Connections
pH 2700
ION 2700
PC 2700
CON 2700 DO 2700
DC Power supply
RS-232 RS-232 output, 2.5 mm jack for RS-232 cable
CON/TEMP
8-pin DIN connection for 2-cell or 4-cell Con/TDS/Temp
electrodes
DO
8-pin DIN connection for Dissolved Oxygen/Temp self stirring
electrode
ATC
For Automatic Temperature Compensation probe.
For PC 2700, this corresponds to the temperature
measurement associated with the BNC (“pH”) input.
REF
Pin connection for half cell reference electrodes.
Requires separate half cell electrode in the BNC (“pH”) input.
Note: REF is not commonly used and is not required.
pH
BNC connection for combination pH, ORP (Redox), or Ion
Selective Electrodes (ISE), or half-cell indicating electrodes.