YSI IFL 700 IQ - Manual (Page 14)

Commissioning IFL 70x IQ
3 - 4 ba76129e01 10/2012
3.3.5 Short-term interferences due to obstacles
Certain events may for a short period of time affect or interrupt the mea-
surement. In waste water treatment plants, these events are normally:

Moving scrapers that displace an installed sensor from its measur-
ing position or cross its measuring cone.
 Fixtures permanently installed in the basin such as pipes or scrapers
that are touched by the measuring cone of a sensor on a scraper
bridge when rotating.
Interferences due to obstacles can be suppressed with the aid of cer-
tain settings (see setting table, section 3.5).
The default settings may have to be adjusted as necessary.
A tilting armature is available for installation in basins with a chain
scraper or linear scraper for scum removal. Thus the sensor is tempo-
rarily pulled out of the basin by the moving scraper.
3.3.6 Connecting the sensor
Connection cable A sensor connection cable of the SACIQ or SACIQ SW type is required
to connect the sensor. The cable is available in different lengths. Com-
pared to the SACIQ standard model, the SACIQ SW sensor connection
cable is optimized concerning its resistance to corrosion. Information
on this and other IQ S
ENSOR N ET accessories is given in the YSI cata-
log and on the Internet.
Are the plug
connections dry?
Before connecting the sensor and sensor connection cable, please
make sure the plug connections are dry. If moisture gets into the plug
connections, first dry the plug connections (dab them dry or blow them
dry using compressed air).
Connecting the sensor
to the sensor
connection cable
How to connect the SACIQ (SW) sensor connection cable
to the terminal strip of an MIQ module is described in chap-
ter 3 I
NSTALLATION of the IQ S ENSOR N ET system operating
manual.
Do not suspend the sensor on the sensor connection cable.
Use a sensor holder or an armature. Information on this
and other IQ S
ENSOR N ET accessories is given in the YSI
catalog and on the Internet.
1 Take the protective caps off the plug connections of the sensor
and the SACIQ (SW) sensor connection cable and keep them
safe.