CPR Touch XL, Control Unit
Index: 03 Date modified: 22/06/2022
OI No.: BA MR 001-03 Steuereinheit CPR Touch XL EN.docx
Page 59 of 70
9.2.3
The measuring amplifier
The measuring amplifier is constructed of several circuit boards.
MV_CPRT_PR_Cl
The basic circuit board MV_CPRT_V1.1 contains the measurement converter for temperature and pressure
measurements. It is also used to accommodate the two measurement converters MV_pR and MV_Cl.
1
= free
4 + 5 = Temperature sensor 1 Pt1000
MV_pR_V1
The circuit board MV_pR_V1 contains the measurement converter for pH and redox measurements.
1
= Redox electrode
(black cable to redox electrode)
Platinum round blank
2
= Mass
(shielding of the coaxial cable mV - OPTIONAL)
3
= Mass
(shielding of the coaxial cable pH)
4
= pH electrode
(internal conductor of the coaxial cable)
MV_Cl_V1
The circuit board MV_Cl_V1 contains the measurement converter for the free chlorine measurements.
1 = Measuring electrode chlorine
(blue cable to the gold electrode)
Gold round blank
2 = Counter electrode
(internal conductor of the coaxial cable)
Metal sensor of the combination electrode
3 = Reference electrode
(shielding of the coaxial cable)
Reference system of the combination electrode
(Redox electrode)
Measuring amplifier
