Evoqua WALLACE & TIERNAN MFC, Instruction Manual, Page: 49 / 268

MFC
Functions
4.
49
Installation notes Ambient conditions
The following must be taken into account when installing the
3 electrode measurement:
• 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.
• If using several DEPOLOX
®
5 flow block assemblies, only one
multi sensor, which records temperature and flow rate, may be
connected to the MFC. Additional multisensors must be
connected to the sample water grounding with PE.
• If the DEPOLOX
®
5 flow block assembly 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 are available for this (see 8.
“Complete Devices, Retrofit Kits and Spare Parts" on
page 215).
• Because the multi sensor is also integrated to measure the
temperature and monitor the flow rate in the DEPOLOX
®
5
flow block assembly, it must also be installed with an equal
extension. Graded, ready-made cable lengths up to 50 m are
also available (see “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 under 9. “Wiring
Diagrams" on page 245.
• The sensor can be calibrated for the first time after approx. two
to three hours running-in time.
Please note
The calibration must be checked after one day.