Chlorine concentration: Solutions and spare parts

Components in contact with the measured medium always wear out to a greater or lesser extent. Long-term accurate and reliable measurement therefore requires maintenance. Depending on the type of sensors used, this mainly involves regular calibrations, replacement of worn parts, or entire sensors (where applicable).

You can easily handle a number of these common tasks yourself, saving time and costs. You can find the relevant procedures in the user's manual of the individual products, or we can also advise you over the phone. Below you will find the necessary materials.

Membrane heads for CSOT, CSCT, CSUT, CSDT, CSZT sensors

Membrane heads of all INSA sensors are easily replaceable. By timely replacement of the worn membrane, the service life of the mentioned sensors can be extended almost indefinitely, if the damage of the previous membrane did not lead to contamination of the sensor's internal system. Membrane heads for amperometric sensors (types MH11 xx for series 43 sensors) must be filled with the corresponding electrolyte prior to assembly. Optical sensor heads (type MH21 for CSOT53 and CSOT63 series sensors) are mounted dry.

A cost-effective alternative to buying a new membrane head is the option of used head repair in our facility.

Type	Suitable for	Front protective elements
MH11 O2	CSOT43PS, CSOT43PL, CSOT43LPS	No
MH11 O2L	CSOT43LS, CSOT43LL, CSOT43LZ	Yes
MH11 C2	CSCT43	No
MH11 U2	CSUT43	No
MH11 D2	CSDT43	No
MH11 Z2	CSZT43	No
MH21 O2	CSOT53, CSOT63	No

Electrolyte for CSOT43, CSCT43, CSUT43, CSDT43, CSZT43 sensors

Electrolyte is used to fill membrane heads for INSA amperometric sensors. The packaging differs (bottle, syringe) according to the consistency and usage of the individual variants.

Type	Suitable for sensors	Packaging
ES43 O2	CSOT43	Bottle 10 ml, 20 ml
ES43 C2	CSCT43	Bottle 20 ml
ES43 U2	CSUT43	Syringe 2 ml
ES43 D2	CSDT43	Bottle 20 ml
ES43 Z2	CSZT43	Bottle 20 ml