Thermo Fisher Scientific Alpha pH 2000 - Manual (Page 44)

8.3 Specifications for panel mount version
Electrical Data And Connections
Signal output
Two 0/4 to 20 mA outputs for pH/mv and
temperature , galvanically isolated
Load Max.600
Ω
pH / ORP Input BNC (10
12
Impedance)
Connection terminal (1 x 3-pin; 1 x 9-pin & 1 x 19-pin terminal
blocks)
Mechanical
Specifications
Dimensions 175 x 96 x 96 mm ( 6.89 x 3.78 x3.78 inch)
Weight 550g (unit); 950g (boxed)
Material ABS
Insulation
IP 54 (front) , IP 40 (housing)