Mettler Toledo InPro 7100-VP Serie Guía De Instalación Rápida página 12

en
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4 Sensor installation
The sensor is to be mounted in such a way that the sample medium flows directly across
the sensor surface. Any other installation position of the sensor may create the risk of
formation of airlocks, or of contamination through deposits of solid matter.
Flow of medium must be across the face of the sensor. Air bubbles and solid matter
deposits are to be avoided. A minimum clearance of 30 mm (1.18") between sensor end
and pipe wall must be maintained (see drawing).
Vertical mounting (top entry) in a pipe is recommended only if the pipe is full and no air
bubbles are able to develop in the flow.
In the event of side mounting (side entry) of the sensor, vertical upward flow of sample
process medium must be ensured.
Flow
direction
T-piece
Connection of the sensor
All of the InPro 7100-VP Series 4-electrode conductivity sensors can be connected to the
associated transmitter using the appropriate multi-wire cable from METTLER TOLEDO.
Color and function of the cable strands (supplied separately)
4-electrode sensor
Current electrode 1
Voltage electrode 1
Voltage electrode 2
Current electrode 2
Temperature probe T1
Temperature probe T2
Shielding
5 Operation
For each sensor, the cell constant and temperature constant have been measured / es-
tablished individually and the values documented in the accompanying Quality Certificate.
In general, the cell constant and temperature constant will not change. It is not necessary
to perform sensor cell constant correction or calibration with standard solutions. Howev-
er, depending on plant operating procedures, the cell constant can be verified / corrected
after the period of initial calibration has expired by using conductivity standard solutions.
InPro 7100-VP Series
30 313 390
Flow direction
Sensor
Example sensor installation.
Cable color
white / blue
white
blue
black
green
red
transparent
© 04 / 16 Mettler-Toledo GmbH
InPro 7100-VP Series
Printed in USA