JANUARY 2010 - TD 220a DEPLOYMENT GUIDE, RDCP600
Page
71
Reliable solutions
1.
Remove the instrument from the pressure case by releasing the two c-clamps at the top
end plate and lift up the instrument.
2.
Unscrew the correct sealing plug at the top end plate. Loosen the set screw that goes with
the sensor position. Do not unscrew the set screw completely and remove it, as it might
be lost.
3.
Pull up the sealing plug. Clean the boreholes.
4.
Inspect the O-rings of the new sensor.
5.
Connect and tighten the new sensor.
6.
Remove the sensor board connector cover from the instrument by unscrewing the two
screws at the top of the sensor board cover.
7.
Plug the electronic cable into the correct channel at the electronic board
If the new sensor is a
Temperature sensor
, it must be connected to connector
channel 2
If the new sensor is a
Conductivity sensor 3919, Pressure sensor 4017, Oxygen
optode
or Turbidity sensor it must be connected to the connector named channel 4,
5 or 6 on the sensor board.
IMPORTANT!
Make sure that the sensors and the c-clamps are well tightened to ensure that no water will
infuse the system.
Do not over tight as this will damage the sensors and the clamps.
Always update the Calibration Coefficients and other sensor information when a new sensor is
installed (Refer the Sensor Configuration page).
4.8.2
Procedure for disconnecting a sensor
The Compass Tilt Sensor and the Quartz Pressure Sensor must be connected at the manufacturer
due to calibration procedures and to prevent water infusing the instrument. If your deployment
does not need the Heading, Pitch and Roll parameters, we recommend that you set fixed
parameters in the Compass/Tilt sensor configuration page. For disconnection of other sensors,
please follow the listed procedure:
1.
Remove the instrument from the pressure case by releasing the two c-clamps at the top
end plate and lift up the instrument.
2.
Remove the sensor board connector cover from the instrument by unscrewing the two
screws at the top of the sensor board cover.
3.
Unplug the electronic cable from the correct channel or terminal.
