Specification for cps11d-7AA21 hand pH meter Measuring Principle Glass electrode Application Standard applications in process and environment. Long-term monitoring, processes with little change. Characteristic Very robust, heavy-duty version / high pressure, integrated potential matching, flat membrane available. Measurement range pH 0-14 Measuring principle Gel compact electrode with PTFE ring-diaphragm. Design - all shaft lengths with temperature sensor, advanced gel technology - digital electrode with Memosens technology Material Glass / PTFE Dimension Diameter: 12 mm (0.46 inch) shaft length: 120, 225, 360 and 425 mm (4.68, 8.77, 14.04 and 16, 57 inch) Process temperature max. 135° C (274° F) Process pressure max. 16 bar (230 psi) Temperature sensor NTC 30k Ex certification ATEX FM CSA Connection Inductive, digital connection head with Memosens technology. Ingres protection IP68 Additional Certifications Also available as Biocompatibility certified SIL version.