Instructions for Use
– SCHMIDT
®
Flow Sensor SS 20.600
Page 30
6 Commissioning
Prior to switching on the
SCHMIDT
®
Flow Sensor SS 20.600
, the follow-
ing checks have to be carried out:
Mechanical installation:
o
Correct immersion depth and alignment of the sensor probe accord-
ing to the flow direction
o
Tightening of the fastening screw or spigot nut
o
Installation of the pressure safety devices
For measurements in media with overpressure, check if the
fastening screw is tightened properly and pressure safety
devices are installed.
Connecting cable:
o
Correct connection in the field (switch cabinet or similar)
o
Tightness of the sensor connector and connecting cable (flat seal
must be inserted correctly into the female cable connector)
o
Tight fit of spigot nut on the cable connector at the sensor housing
After switching on the operating voltage, the sensor signals its initialization
by switching all four LEDs sequentially to red, orange and green.
If the sensor detects a problem during initialization, it signals the problem
according to Table 5. An extensive overview of possible errors, their
causes as well as troubleshooting measures are listed in Table 9.
If the sensor is operating as intended after the initialisation, it switches into
regular measuring mode. For a short period the flow velocity indication
(both LEDs and signal outputs) goes to maximum and settles to the correct
measuring value after about 10 seconds, provided the sensor probe was
already at medium temperature. Otherwise, the process will last longer
until the sensor has reached the medium temperature.
