max. depth 1,200m
The pH sensor uses a pressure-balanced glass electrode with a built-in reference to provide in-situ measurements up to 1,200 m depth. The sensor is equipped with a reference system consisting of a gel (stiff polymer mass containing KCl without Ag+-ions) and a ceramic pore diaphragm. Due to the silver-free reference electrolyte, the sensor is H2S resistant.
The pH sensor is supplied with a storage solution in a wetting cap. The cap must always be placed beneath the sensor and contain sufficient storage solution to store the sensor when not in use. The storage solution should be a 3 M KCl solution that prevents the reference electrode from drying out.
The sensor needs replacement after a lifespan of approximately 12 months (depending on the measuring environment).
Technical data:
- Pressure resistance: 1,200 dbar
- Temperature range: 0…60 °C
- Measuring range: 0…14 pH
- Accuracy: ± 0.02 pH
- Response time: 1 s t63% of reading
- Principle: Single rod electrode
- Diaphragm: Open junction
- Dimensions: 12 mm Ø, 117 mm long
- Feature: H2S resistant
- Used for: CTD48, CTD48c, CTD48M, CTD48Mc, CTD75M, CTD90, CTD90M, CTD115M
