Changing The Electronic Sensor Assembly (Version 0699 6446); Changing The Electronic Sensor Assembly (Version 0699 6447) - TESTO 0699 6446 Series Instruction Manual

6 Operation
6.3
6.4
38
Changing the electronic sensor as-
sembly (version 0699 6446)
The removal of the mounted electronic sensor assembly may be necessary
for maintenance, cleaning and calibration purposes.
Make sure that the pipeline is ventilated. Removing the sensor from a line
that has not been depressurized can be extremely dangerous.
•
Remove the electrical connecting cable by unscrewing the connector
from the sensor by hand. Protect the connector from contamination and
moisture.
•
Disconnect both halves of the hood from the sensor in the longitudinal
direction by hand.
•
Loosen the sensor from the measuring block using a jaw wrench (size
27) and pull out the sensor upwards in a vertical position.
Take care not to damage the sensor tip. Use the protection cap for the sen-
sor tip as soon as the sensor is no longer mounted on the measuring block.
Use the sealing cap that is available as an option ( Section 3.3.1) when
the pipeline is to be operated without a sensor.
Changing the electronic sensor as-
sembly (version 0699 6447)
The removal of the mounted electronic sensor assembly may be necessary
for maintenance, cleaning and calibration purposes.
Removing the electronic sensor assembly from the interchangeable fitting
without this having been properly operated and not being in the CLOSE po-
sition can be extremely dangerous on a line that is under pressure.
•
Remove the electrical connecting cable by unscrewing the connector
from the electronic sensor assembly by hand. Protect the connector from
contamination and moisture.
•
Slowly and evenly turn the interchangeable fitting out of the pipeline
only by hand, without tools, (to the left) in the direction of the arrow
CLOSE.
•
Only when the interchangeable fitting is completely in the CLOSE
position does the O-ring seal off the electronic sensor assembly from the
pressurized line.
•
Slowly detach the top union nut from the head of the interchangeable
fitting. Slowly let the air escape and make sure that it is only a short
discharge pressure and that the interchangeable fitting is securely
sealed.
•
Completely remove the union nut and remove the electronic sensor
assembly by pulling it out upwards in a vertical position.