Chauvin Arnoux PSD 21 Notice De Fonctionnement page 18

English
2.2 REAR PANEL
Insulated 4mm terminals for recorder output
2mm banana jack for
separate reference
electrode
2.3 BOTTOM
Identification label:
18
㊀
Black
BNC connector for
pH/mV electrode
⊕
Red
Power input
pH Meter PSD 21