Manufacturer: Endress+Hauser . Product No, :CPS11D-7BA2G Measuring principle:Glass electrode e Characteristic -Analog, digital pH electrodes for standard applications in process and environmental technology -Dirt-repellent PTFE diaphragm, built-in temperature sensor Measurement range:pH 0 to 14 Measuring principle:Gel compact electrode with PTFE ring-diaphragm C Dimension . Diameter: 12 mm (0.47 inch) Shaft length: 120, 225 and 360 mm (4.72, 8.86 and 14.17 inch) Process temperature:0 to 135 °C (32 to 275 °F) Process pressure:1 to 17 bar (15 to 246 psi) Temperature sensor:NTC 30K