RBR Quartz3 BPR zero Manuale utente

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INSTRUMENT GUIDE

BPR|zero

RBR#0008819revA
2
Table of Contents
1Table of Contents ...................................................................................................... 2
Introduction ............................................................................................................... 3
Revision history.......................................................................................................... 4
Warranty statement................................................................................................... 5
RBRquartz BPR|zero................................................................................................... 6
1 Overview - RBRquartz BPR|zero ....................................................................................................... 6
1.1 Description ........................................................................................................................................................................6
2 Specifications - RBRquartz BPR|zero ............................................................................................... 6
Instrument Hardware ................................................................................................ 9
1 Opening and closing the RBRquartz BPR|zero ................................................................................ 9
2 Changing the batteries - RBRquartz BPR|zero............................................................................... 11
2.1 Steps: ...............................................................................................................................................................................11
3 Installing desiccant - RBRquartz BPR|zero .................................................................................... 12
4 Maintenance and repairs................................................................................................................ 12
4.1 O-rings - RBRquartz BPR|zero.........................................................................................................................................12
Inspecting O-rings...........................................................................................................................................................13
Replacing an O-ring.........................................................................................................................................................13
4.2 Servicing the RBRquartz BPR|zero waste oil reservoir..................................................................................................14
Overview..........................................................................................................................................................................14
4.3 Repairs.............................................................................................................................................................................15
4.4 Support kits.....................................................................................................................................................................16
Appendix................................................................................................................... 17
1 Appendix A - RBRquartzBPR|zero Product Drawing...................................................................... 17
2 Appendix B - RBRquartzBPR|zero Service Drawing....................................................................... 19
3 Appendix C - RBRquartzBPR|zero Connector Details.................................................................... 20

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2 Introduction

You can access the RBR instrument guide on the USB data stick provided when you purchase a logger, from the Help

menu in Ruskin, and on the RBR web site, atwww.rbr-global.com.

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3 Revision history

Revision No. Release Date Notes

A 04-May-2020 Original

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4 Warranty statement

All data loggers manufactured by RBR Ltd. are warranted against defects in workmanship or original parts and

materials for one year. Third party sensors (not manufactured by RBR) are limited to the warranty provided by the

original manufacturer.

Units suffering from such defects will be repaired or replaced at the discretion of RBR Ltd., provided that the problem

has appeared during normal use of the instrument for the purpose intended by us. The liability of RBR Ltd. extends only

to the replacement cost of the instrument. The customer will bear all costs of shipment to us for repair; all other costs,

including return shipment, will be borne by RBR Ltd.

This warranty does not cover consumables or normal wear and tear, nor does it cover damage caused by negligent use

or mishandling. Attempted modification or repair of any unit without the prior consent of RBR Ltd. will immediately

void any warranty in force.

Users are expected to maintain a regular program of calibration.

We reserve the right to grant or refuse warranty repairs at our discretion if we consider that there are reasonable

grounds for doing so.

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5 RBRquartz BPR|zero

5.1 Overview - RBRquartz BPR|zero

5.1.1 Description

The RBRquartz³ BPR | zero is a special version of the robust RBRquartz³ BPR implementing an internal quartz barometer

and a switching valve. The novel AzeroA technique is used to provide in-situ reference measurements to correct for long

term drift in the Paroscientific Digiquartz® pressure gauge. Configured with one or two Digiquartz® pressure gauges, an

internal barometer is used in conjunction with a hydraulic manifold to periodically make reference measurements of

internal housing pressure. This instrument is intended for deep water, long-term deployments where high stability and

resolution of absolute pressure measurements are critical. The RBRquartz³ BPR | zero may be supplied with external

power from RBRfermata (power) or RBRcervata (power and memory) canisters or cabled to an observatory for external

power and realtime data access.

The RBRquartz³ BPR | zero uses the AzeroA technique to assess drift in the Digiquartz® pressure gauge. This is done by

periodically switching the applied pressure that the gauge measures from seawater to the atmospheric conditions

inside the housing. The drift in quartz sensors is proportional to the full-scale rating, so a reference barometer - with

hundreds of times less drift that the marine gauge - is used to determine the behaviour of the marine pressure

measurements.

5.2 Specifications - RBRquartz BPR|zero

Physical

Weight: ~30kg in air (one Paros)

~18kg in water (one Paros)

Size: ~750mm x Ø140mm

Housing: Titanium

Depth rating: 7000 m

Operational temperature: -20°C to 50°C*

Storage temperature: -20°C to 50°C

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Power: Requires external power**

External power: 9.5-30VDC

Communication: USB-C, RS-232/485, Ethernet***

Other

Storage: 240M readings

Clock drift: ±60 seconds/year

Integration time 760ms (Single Paros)

720ms (Dual Paros)

*Calibrated temperature range is -5°C to 35°C

**The instrument has 8 X AA batteries installed, however, this is intendedonlyfor purposes of sustaining the instrument

during external power interruptions of a few minutes. While the Paros will continue to run and be measured,the valve

will not operate.

***Connector diagram and pinout available inAppendix C - RBRquartzBPR|zero Connector Details

Marine temperature (standard)

Range: -5 to 35°C

Accuracy: ±0.002°C

Time constant: ~3 minutes

Typical stability: ±0.002°C/year

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Depth

Range: 1350 / 2000 / 4000 / 7000 dbar

Initial accuracy: ±0.01% FS (full scale)

Resolution: 10ppb (at 16Hz sampling rate)

Accelerometer (optional)

Range: ±3g

Resolution: <100ng

The full mechanical drawing is available inAppendix A - RBRquartzBPR|zero Product Drawing

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6 Instrument Hardware

6.1 Opening and closing the RBRquartz BPR|zero

Instruments have both a "sensor end cap" and a "battery end cap". The battery end cap will be the side with the two

underwater connectors (both MCBH and MINK are options, MCBH is shown below). Only the battery end cap needs to be

opened to access the data connector, batteries, desiccant, and waste reservoir. To open the logger battery end cap, the

two M6 screws will need to be removed using a 6mm Allan key (supplied). To do this the instrument can be stood on the

sensor end cap and held vertically, or laid on its side.

Once the screws are removed, the battery end cap can be removed and rested on the side of the housing when standing

vertical.

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To reassemble, line up the battery end alignment pin with its socket and push until the battery end cap is mated fully to

the housing.Remember to keep the O-rings clean and avoid scratching the O-ring mating surfaces. Carefully inspect the

O-rings, as described in the Inspecting theO-rings section, before deploying the logger.

Reinstall the 2 X M6 screws and tighten to max of 10Nm.

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