RBR quartz3 BPR zero Bedienungsanleitung
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INSTRUMENT GUIDE
BPR|zero
RBR#0008819revB
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Table of contents
1
RBRquartz³ BPR | zero.....................................................................................................3
2 Specifications..................................................................................................................4
3 Hardware.........................................................................................................................7
3.1 Opening and closing the instrument .........................................................................7
3.2
RBRquartz³ BPR | zero interface.................................................................................8
3.3 Orientation and datum location ..............................................................................10
3.4 Underwater battery canisters ..................................................................................11
4 General maintenance ...................................................................................................12
4.1 Support kit.................................................................................................................12
4.2 Replacing the O-rings................................................................................................13
4.3 Replacing batteries ...................................................................................................15
4.4 Replacing desiccant capsules...................................................................................16
4.5 Cables and connectors .............................................................................................17
4.6 Cleaning the instrument...........................................................................................18
4.7 Calibrating the instrument .......................................................................................18
5 Oil purge container maintenance ................................................................................19
6 Repairs...........................................................................................................................21
7 Revision history.............................................................................................................22
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1 RBRquartz³ BPR | zero
The RBRquartz3BPR | zero is a special version of the robust RBRquartz³ BPR (Bottom Pressure Recorder) with the
additional advantage of the AzeroA correction technique.
The instrument integrates one or two Paroscientific Digiquartz® pressure gauges, an internal quartz barometer, and a
switching valve. It is the switching valve that provides in situ reference measurements to correct for the long term drift
in the pressure gauge. The resulting drift is several hundred times lower than with uncompensated measurements.
The RBRquartz3BPR | zero is intended for deep, long-term deployments where high stability and resolution of absolute
pressure measurements are critical. Its applications include detection of natural disasters, such as avalanches,
earthquakes, severe weather, tsunamis, and wake turbulence.
Key features of the RBRquartz3BPR | zero are:
AzeroA drift correction
High accuracy
Quartz stability
Long deployments
Extend deployment times even furtherusing external power supply from the RBRfermata (power) or the RBRcervata
(power and memory) canisters. Alternatively, use an extension cable to connect the instrument to an observatory for
external power and realtime data access.
The RBRquartz3BPR | zero may include an optional built-in tilt sensor (accelerometer).
For a detailed description of bottom pressure recording using the RBRquartz3BPR | zero, see Ruskin User Guide:
Standard Loggers3 .
RBRquartz3 BPR | zero
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2 Specifications
Instrument
Specification Description
Maximum number of readings* ~240 million
Power Internal: 8 AA cells (for backup power only)
External: 9.5V to 30V
Communications Internal: USB-C
External: RS-232, RS-485, or Ethernet
Clock drift ±60 second/year
Depth rating 7000m
Housing Titanium
Diameter ~140mm
Length ~788mm
Weight (single Paroscientific unit, with batteries) 30Kg in air, 18Kg in water
*Each sample can include multiple readings.
**Exceeding the absolute maximum pressure will damage the instrument.
Temperature sensor
Specification Description
Range -5 to 35°C*
Initial accuracy ±0.002°C
Resolution 0.00005°C
Typical stability ±0.002°C/year
Time constant ~3min
*A wider temperature range is available upon request. ContactRBR for more information.
.
Pressure sensor
Specification Description
Range 1000 / 2000 / 4000 / 7000dbar
Initial accuracy ±0.01% full scale
Resolution 10ppb (at 1Hz sampling rate)
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Clock
The instrument's clock is maintained during brief disconnections. This time is usually sufficient to change batteries or
replace desiccants.
USB-C power
The USB-C cable provides power sufficient for configuration or data download. However, the instrument requires an
internal or external power supply to perform sampling.
Deployment estimates
Deployment times are estimated for lithium thionyl chloride batteries based on both memory and internal battery
capacity.
External power with voltage of 9.5V or higher is required to operate the switching value.
Internal LTC batteries only
(no valve operation)
RBRfermata with LTC batteries
(with the valve activated every 20 days)
Speed Time (days) Number of samples Time (days) Number of samples
8Hz 32 22M 75 45M
4Hz 32 11M 150 45M
2Hz 32 5.6M 300 45M
1Hz 32 2.8M 610 45M
Power supply selection
If connected, an external power supply will be used preferentially over the internal batteries as long as the voltage
remains 4.5V or greater. If it drops below 4.5V or complete disconnection occurs, the system automatically switches to
the internal batteries. The internal batteries are sufficient to maintain sensor operation without the switching valve.
The external power supply and cables shall support inrush currents of up to 5A for proper valve operation.
.
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External MCBH-6-MP connector pinout
Pin
No.
USB RS-232 RS-485 Ethernet
1 Ground
2 Power 9.5V to 30V
3 N/C Data output
from the
instrument
(Tx)
TD (A)- Data output
from the
instrument
(Tx-)
4 VUSB
+5V Data input
into the
instrument(
Rx)
RD (B)+ Data input
into the
instrument
(Rx+)
5 D- N/C RD (A)- Data input
into the
instrument
(Rx-)
6 D+ N/C TD (B)+ Data output
from the
instrument
(Tx+)
.
.
External MINK connector pinout
Pin No. RS-232 RS-485 Ethernet
1 Power 9.5V to 30V
2 N/C RD(A) Data output from the
instrument (Tx+)
3 N/C N/C Data input into the
instrument (Rx+)
4 Data output from
the instrument
(Tx)
RD(B)+ Data output from the
instrument (Tx-)
5 Ground
6 Data input into
the
instrument(Rx)
TD(B)+ N/C
7 N/C N/C Data input into the
instrument (Rx-)
8 N/C
9 N/C TD(A)- N/C
10 Ground
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1.
2.
3.
3 Hardware
3.1 Opening and closing the instrument
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Opening the instrument
Place the RBRquartz3BPR | zero vertically with the battery end-cap up and the sensor end-cap down.
Alternatively, you can lay it on the side.
Unscrew and remove the two cap screws using a 5mm hex key.
Rest the battery end-cap on the side of the instrument, as shown.
Locations of cap screws
Open instrument, with the end-cap resting on the side
When opening the instrument, make sure to keep the O-rings clean and avoid scratching the O-ring mating
surfaces.
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1.
2.
3.
1.
2.
3.
Disconnecting the umbilical cable
Locate the small latch on the side of the connector.
Press the latch with your thumb and pull the connector down.
Set the battery end-cap aside..
.
.
.Closing the instrument
If disconnected, insert the umbilical cable back in its socket.
Align the battery end-cap with the slot on the instrument housing and gently push down to ensure it fits in place.
Reinstall the two cap screws and tighten to 1/4 turn past tight (10Nm max).
USB-C port
Do not pull on the wires attached to the connector!
3.2 RBRquartz³ BPR | zero interface
The RBRquartz³ BPR | zero instrument provides an internal USB-C port and several external communication options.
Select from RS-232, RS-485, and Ethernet at the time of order, and RBR will wire the battery end-cap to support your
preferred external connection.
.
Patch cables and underwater extension cables are sold separately.
.
USB-C connection
The USB-C port is located under the battery end-cap.
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Umbilical connection
The umbilical cable connects the RBRquartz³ BPR | zero to the connectorised end-cap. There are two ports: one under
the end-cap and one inside the instrument.
Umbilical ports
End-cap types
The RBRquartz³ BPR | zero battery end-caps may support a MINK-10-FCR connector, two MINK-10-FCR connectors, or
two MCBH-6-MP connectors, depending on the type.
Dual MINK battery end-cap MINK battery end-cap Dual MCBH battery end-cap
Refer to Opening and closing the instrument for details on accessing the internal USB-C port.
Refer to Specifications for the external connector pinout diagrams.
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3.3 Orientation and datum location
The datum of the RBRquartz3 BPR | zero is located at the centre of the sensor end-cap. RBR performs an offset
adjustment with the pressure sensor facing downwards, as shown in the first image below. It is recommended to deploy
the instrument vertically with the battery end-cap up and the sensor end-cap down. It is acceptable to deploy
horizontally if necessary.
Recommended orientation: sensor end-cap down Datum location
Avoid deploying the instrument vertically with the sensor end-cap up!Such orientation will affect performance
of the pressure sensor due to increased build-up of sediment.
Andere Handbücher für quartz3 BPR zero
1
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Andere RBR Messgerät Handbücher
