Oil purge container maintenance

The RBRquartz³ BPR | zero uses one or two Paroscientific Digiquartz® sensors, with AzeroA drift correction.

A switching valve facilitates reference measurements of internal housing pressure. These data are monitored by an internal quartz barometer which corrects the drift of the sensors over time. Activation of the switching valve pushes a small amount of buffer oil out of the buffer tube into the housing, where it is captured in the oil purge container.

By cleaning the container and replacing the absorbent pad after each deployment you will maintain the pressure sensor accuracy and extend its life.

All required materials for this procedure are provided in the support kit.

Required materials

  • 5mm hex key

  • O-ring

  • Silicone compound

  • Replacement absorbent pads

Recommended handling materials

  • Latex or nitrile gloves

  • Eye protection

  • Protective coat

Buffer oil is not a hazardous substance, but it is recommended to practice good industrial hygiene and safety practices, and to use this material in a well-ventilated space.

Cleaning the oil purger container

Step Description Image

1

Unscrew the battery end-cap and remove the umbilical cord (see Opening and closing the instrument).
rbrquartz3bpr zero endcap

2

Remove the container:

  1. Turn the red handle counterclockwise at least one full rotation.

  2. Pull the handle out, with the container.
rbrquartz3bpr zero interface

3

Remove the absorbent pad contaminated with buffer oil.

Dispose the contaminated pad in accordance with local regulations.

4

Replace the O-ring on the oil purge container (see Replacing the O-rings for details on handling O-rings).

5

Replace the absorbent pad:

  1. Roll the narrow side of a clean pad and insert it into the container’s central compartment, letting the rest of the pad out through the slit on the side.

  2. Wrap the remaining pad around the container going clockwise and tighten.
bprzero pad rolled

6

Reinstall the container:

  1. Hold the pad so that it does not unravel.

  2. Insert the container back into the instrument.

  3. Turn the red handle clockwise one full rotation.
bprzero pad install 2

7

Return the battery end-cap back onto the instrument (see Opening and closing the instrument).