Evoqua WALLACE & TIERNAN MFC, Instruction Manual

Page: 57 / 268

MFC
Functions
4.
57
Installation notes Ambient conditions
The following must be taken into account when installing the
membrane sensors:
• Select the sample water extraction point that guarantees a
proper mixture of disinfectant and a bubble-free sample water
flow.
• Keep the sample water extraction line as short as possible.
Please note
No water carrying lines made of copper piping may be installed.
These would distort the measurements.
• The membrane sensors can only be used in the DEPOLOX
®
5
or VariaSens flow block assembly, which maintains the
constant sample water flow.
Because not all membrane sensors are designed for
pressurised operation, the operating conditions and the sensor
technical data must be reviewed and coordinated before the
sensors are installed in pressurised flow block assemblies!
• If the membrane sensor is not installed right next to the MFC,
the measuring cell cable can be lengthened up to no more
than 50 m with a three-core, shielded cable. Ready- made
extension cables up to 15 m are available for this (see 8.
“Complete Devices, Retrofit Kits and Spare Parts" on
page 215).
Use terminal strips with right or left side connection routes
depending on the module slot in use. Find information on
connecting the sensor to the sensor module in the wiring diagrams
under 9. “Wiring Diagrams" on page 245.