Campbell BaroVUE 10 User manual

04/2021
Copyright © 2021
Campbell Scientific, Inc.

Table of contents
1. Introduction 1
2. Precautions 1
3. Initial inspection 2
4. Overview 3
5. QuickStart 4
6. Specifications 7
6.1 Accuracy 8
7. Installation 8
7.1 Wiring 8
7.1.1 SDI-12 data logger connections 9
7.1.2 RS-232 connections 9
7.2 Programming 10
7.2.1 SDI-12 programming 10
7.2.2 RS-232 programming 10
7.3 Mounting 11
7.3.1 External air intake 11
7.3.2 Typical mounting 12
7.3.3 ENC100 mounting 13
7.3.4 DIN-rail mounting 14
8. Operation 15
8.1 Factory settings 16
8.2 SDI-12 commands 16
8.3 Quality metric 17
8.4 Correcting pressure to sea level 18
8.5 Device Configuration Utility 18
8.5.1 Updating operating system 23
8.6 RS-232 polled mode commands 23
8.7 Main menu 25
8.7.1 RS-232 polled mode commands 26
Table of Contents - i

8.7.2 Recovery mode 27
9. Troubleshooting and maintenance 29
9.1 Troubleshooting 29
9.2 Maintenance 29
9.3 Sensor card replacement procedure 30
Appendix A. Importing Short Cut code into CRBasic Editor 33
Appendix B. SDI-12 sensor support 34
B.1 SDI-12 command basics 34
B.1.1 Acknowledge active command (a!) 35
B.1.2 Send identification command (al!) 35
B.1.3 Start verification command (aV!) 36
B.1.4 Address query command (?!) 36
B.1.5 Change address command (aAb!) 36
B.1.6 Start measurement commands (aM!) 37
B.1.7 Start measurement commands with cyclic redundancy check (aMC! and aCC!) 37
B.1.8 Stopping a measurement command 38
B.1.9 Send data command (aD0! … aD9!) 38
B.2 SDI-12 transparent mode 38
B.2.1 Changing an SDI-12 address 39
B.3 References 41
Table of Contents - ii

1. Introduction
The BaroVUE™10 measures barometric pressure between 500 to 1100 hPa. This range is
equivalent to a pressure measurement taken below sea level such as in a mine to over 4,570 m
above sea level. The BaroVUE 10 is designed for use in environmental applications and is
compatible with all Campbell Scientific data loggers.
NOTE:
This manual provides information for CRBasic data loggers only.
2. Precautions
lREAD AND UNDERSTAND the Safety section at the back of this manual.
lCare should be taken when opening the shipping package to not damage or cut the cable
jacket. If damage to the cable is suspected, contact Campbell Scientific.
lAuthorized technician shall verify that the installation and use of this product is in
accordance to the manufacturer’s instructions, recommendations and intended use.
lAlthough the BaroVUE 10 is rugged, it should be handled as a precision scientific
instrument.
lDO NOT blow into the pressure tube/barb. The human lungs are capable of creating a
pressure of approximately 150 hPa above ambient, which can damage the pressure sensors
or cause loss of calibration.
lSensor card is not a memory card. Although inserting the card into a computer slot will not
damage the card, it will not appear as external storage or be shown in the computer device
manager.
lDo not submerge the sensor card or the motherboard in water.
lTemperatures beyond the operating temperature range may damage the electronics and
cause loss of calibration (see Specifications (p. 7)).
lUnnecessary forces applied to the sensor card can cause loss of calibration.
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WARNING:
Failure to protect the sensor from condensation may result in permanent damage. Improper
wiring may damage the BaroVUE 10 beyond repair.
3. Initial inspection
lUpon receipt of the BaroVUE 10, inspect the packaging and contents for damage. If any
damage during transport has occurred, file damage claims with the sensor provider.
lImmediately check package contents against the shipping documentation. Contact
Campbell Scientific about any discrepancies.
The following components are included with all BaroVUE 10 assemblies:
Table 3-1: BaroVUE 10 components
Quantity Component Description Image
1 BaroVUE 10
Reads sensor card data and sends
data to the data logger using SDI-
12 or RS-232
1 BVC101 sensor card Contains barometric pressure
sensors and calibration coefficients
1USB Type A - Micro B
cable
Connects BaroVUE 10 to the
computer
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Table 3-1: BaroVUE 10 components
Quantity Component Description Image
1BaroVUE10CBL Data
and Power cable
Connects BaroVUE 10 to data
logger
2
#6-32 x .375 Pan
Phillips Screws and
Grommets for #6
screws
Used to mount BaroVUE 10 to an
enclosure backplate
1 BV-CAL BaroVUE 10 factory calibration
certificate 
1 The BCV10 is supplied inside the BaroVUE 10.
4. Overview
The BaroVUE 10 uses a set of silicon pressure elements. Each element is individually calibrated
with the calibration corrections stored on the chip. An out-of calibration sensor card can be
returned to Campbell Scientific for recalibration. The sensor card is easily changed in the field,
reducing downtime and calibration costs.
The BaroVUE 10 is a fully digital sensor. Electronics within the BaroVUE 10 control the
measurement made by the sensor element, apply the calibration coefficients, average the
readings, and output the data using SDI-12 or RS-232 protocol to a data logger. The BaroVUE 10
also includes built-in outlier detection and quality metric with each measurement ensuring a
reliable and accurate pressure sample. This barometer is encased in a plastic housing designed to
withstand the operating temperature range. The case is fitted with an intake valve and a sealed
pressure chamber to allow for remote pressure sensing.
In most applications, the BaroVUE 10 idle current is insignificant compared to the data logger and
other power draws, allowing the BaroVUE 10 to be powered continuously. See Specifications (p.
7)) for more information.
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Features
lMultiple sensor elements result in accurate and stable measurements with built-in quality
metric
lField-interchangeable sensor card
lIndividually calibrated sensor elements that require no further adjustment
lLow power consumption
lDigital SDI-12 and RS-232 output
lCompatible with Campbell Scientific data loggers: Granite-series, CR6, CR3000, CR1000X,
CR800-series, CR300-series, CR1000
5. QuickStart
A video that describes data logger programming using Short Cut is available at:
www.campbellsci.com/videos/cr1000x-data logger-getting-started-program-part-3 . Short
Cut is an easy way to program your data logger to measure the sensor and assign data logger
wiring terminals. Short Cut is available as a download on www.campbellsci.com . It is included
in installations of LoggerNet, RTDAQ, and PC400.
The following procedure also shows using Short Cut to program the BaroVUE 10.
1. Open Short Cut and click Create New Program.
2. Double-click the data logger model.
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3. In the Available Sensors and Devices box, type BaroVUE10 or find the sensor in the Sensors
> Meteorological > Barometric Pressure folder, and double-click BaroVUE10 (SDI-12)
Barometric Pressure Sensor. SDI-12 Address defaults to 0. Enter the correct SDI-12 Address
for the sensor if it has been changed from the factory default value. Type the elevation in
meters. Choose whether to measure the sensor every hour or every scan. The Barometric
pressure and Temperature default to hPa and deg C, respectively. These can be changed
by clicking the Barometric pressure or Temperature box and selecting another option.
4. Click the Wiring tab to see how the sensor is to be wired to the data logger. The default
control terminal for SDI-12 is C1. To change to another terminal, click the terminal name
and select another terminal. Click OK after wiring the sensor.
5. Repeat steps three and four for other sensors you want to measure. Click Next.
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6. In Output Setup, type the scan rate, a Table Name, and Data Output Storage Interval. Click
Next.
7. Select the output options.
8. Click Finish and save the program. Send the program to the data logger if the data logger
is connected to the computer.
9. If the sensor is connected to the data logger, check the output of the sensor in the data
display in LoggerNet, RTDAQ, or PC400 to make sure it is making reasonable
measurements.
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6. Specifications
Digital output: SDI-12, RS-232 serial
Response time: 1 s for the M! SDI-12 command
Default configuration 
SDI-12: Default SDI-12 address is 0
RS-232: 9600 baud rate, eight data bits, no
parity, one stop bit
Operating range 
Pressure: 500 to 1100 hPa
Temperature: –40 to 60 °C
Humidity: 0 to 97%, non-condensing
Supply voltage: 9 to 28 VDC
Current consumption at 12 VDC
Idle: 200 µA; 350 µA (RS-232 enabled)
Active: <5 mA
Housing material: Polybutylene terephthalate (PBT)
and polycarbonate (PC)
Internal chamber pressure
rating with respect to
ambient: ±400 hPa
Pressure fitting: ⅛ inch barb
Maximum cable length: 3 m (10 ft)
Dimensions: 2.1 x 9.0 x 10.2 cm (0.8 x 3.5 x 4.0 in)
Weight: 135 g (4.8 oz)
Compliance: View documents at:
www.campbellsci.com/barovue10
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6.1 Accuracy
Calibration Uncertainty:1±0.15 hPa at 20 °C
Uncertainty: ±0.3 hPa at 20 °C
Total uncertainty: ±0.5 hPa at –40 to 60 °C
Long-term stability: ±0.1 hPa per year
Power supply rejection: >30 dB
Measurement noise: 0.05 hPa (RMS)
Resolution: 0.1 hPa
1Defined as ±2 standard deviation limits of inaccuracy of the working standard at 1000 hPa in comparison to
international standards (NIST)
7. Installation
If you are programming your data logger with Short Cut, skip Wiring (p. 8) and Programming (p.
10). Short Cut does this work for you. See QuickStart (p. 4) for a tutorial.
7.1 Wiring
The BaroVUE 10 does not support communications through SDI-12 and RS-232 simultaneously.
The data logger connects to the BaroVUE 10 with a 5-pin screw terminal plug connector. This
connector is removable and may be replaced.
FIGURE 7-1. 5-pin screw terminal plug connector and connections
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7.1.1 SDI-12 data logger connections
Connect the wires in the order shown in the following table.
Table 7-1: Wire color, function, and data logger connection
Wire color Wire function Data logger connection
White SDI-12 signal C, SDI-12, or U configured for SDI-121
Red Power 12V, Battery+
Black Power ground G
Blue RS-232 TX not connected
Yellow RS-232 RX not connected
1U and C terminals are automatically configured by the measurement instruction.
If multiple SDI-12 sensors are connected to a data logger, Campbell Scientific recommends using
separate terminals when possible. However, multiple SDI-12 sensors can connect to the same
data logger control or U terminal. Each must have a unique SDI-12 address. Valid addresses are 0
through 9, a through z, and A through Z.
For CR6 and CR1000X data loggers, triggering conflicts may occur when a companion terminal is
used for a triggering instruction such as TimerInput(), PulseCount(), or WaitDigTrig().
For example, if this product is connected to C3 on a CR1000X, C4 cannot be used in the
TimerInput(), PulseCount(), or WaitDigTrig() instructions.
7.1.2 RS-232 connections
Table 7-2: Wire color, function, and data logger connection
Wire color Wire function Data logger connection
Blue RS-232 TX C (even numbered)
Yellow RS-232 RX C (odd numbered)
Red Power 12V, Battery+
Black Power ground G
White SDI-12 signal not connected
1U and C terminals are automatically configured by the measurement instruction.
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7.2 Programming
Short Cut is the best source for up-to-date programming code for Campbell Scientific data
loggers. If your data acquisition requirements are simple, you can probably create and maintain a
data logger program exclusively with Short Cut. If your data acquisition needs are more complex,
the files that Short Cut creates are a great source for programming code to start a new program
or add to an existing custom program.
NOTE:
Short Cut cannot edit programs after they are imported and edited in CRBasic Editor.
A Short Cut tutorial is available in QuickStart (p. 4). If you wish to import Short Cut code into
CRBasic Editor to create or add to a customized program, follow the procedure in Importing
Short Cut code into CRBasic Editor (p. 33). Programming basics for CRBasic data loggers are
provided in the following sections. Downloadable example programs are available at
www.campbellsci.com/downloads/barovue10-example-programs .
7.2.1 SDI-12 programming
The SDI12Recorder() instruction sends a request to the sensor to make a measurement and
then retrieves the measurement from the sensor. See SDI-12 commands (p. 16) for more
information.
For most data loggers, the SDI12Recorder() instruction has the following syntax:
SDI12Recorder(Destination, SDIPort, SDIAddress, “SDICommand”, Multiplier, Offset,
FillNAN, WaitonTimeout)
For the SDIAddress, alphabetical characters need to be enclosed in quotes (for example, “A”).
Also enclose the SDICommand in quotes as shown. The Destination parameter must be an
array. The required number of values in the array depends on the command (see Table 8-2 (p.
17)).
FillNAN and WaitonTimeout are optional parameters (refer to CRBasic Help for more
information).
7.2.2 RS-232 programming
The RS-232 instructions are shown in Table 7-3 (p. 11).
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Table 7-3: Serial instructions
Instruction Function
SerialFlush() Clears the buffer.
Scan() Establish a scan rate.
SerialOut() Send command to the sensor.
SerialIn()
Set up the COM port to receive the incoming serial data. Note that in
the beginning of the CRBasic program, the variable used in the
SerialIn() instruction needs to be declared as an ASCII string
format.
SplitStr() Split out digital count value from the input string.
7.3 Mounting
To prevent condensation, install the sensor in an environmentally protected enclosure, complete
with desiccant. Change desiccant at regular intervals.
7.3.1 External air intake
For the sensor to detect the external ambient pressure, the enclosure must vent to the
atmosphere (not be hermetically sealed), which may require the addition of a vent hole on the
outer wall.
The preferred method is to use a two plate pressure port such as the RM Young 61002 to
minimize dynamic pressure errors due to wind.
Wind at the barometer inlet can impair measurement performance of remote barometers.
Ambient wind of 20 meters/second (45 mph) blowing over a typical barometer inlet tube can
cause dynamic pressure errors as high as 3 hPa. These errors can make atmospheric pressure
data unsuitable for research and forecast purposes. The pressure port reduces dynamic pressure
errors to a minimum level. The design of the pressure port effectively slows air velocity at the
pressure inlet. An internal baffle system creates a barrier to water and snow intrusion into the
barometer.
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FIGURE 7-2. Zero wind pressure plate
Mount the sensor with the pneumatic connector pointing vertically downwards to prevent
condensation collecting in the pressure cavity, and also to ensure that water cannot enter the
sensor.
7.3.2 Typical mounting
CAUTION:
To prevent condensation, install the sensor in an environmentally protected enclosure,
complete with desiccant. Change desiccant at regular intervals.
The BaroVUE 10 is typically mounted in a Campbell Scientific enclosure next to the data logger.
Secure the BaroVUE 10 to an enclosure backplate by inserting screws through the mounting
holes in the BaroVUE 10 and into the grommets.
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FIGURE 7-3. BaroVUE 10 mounted in a Campbell Scientific enclosure
7.3.3 ENC100 mounting
Campbell Scientific offers the ENC100 for situations where it is desirable to house the BaroVUE 10
in its own enclosure (see FIGURE 7-4 (p. 14)). The ENC100 is a small enclosure with dimensions of
17 x 14 x 10 cm (6.7 x 5.5 x 3.9 in). It includes a compression fitting for cable entry, a vent for
equalization with the atmosphere, a backplate for mounting the BaroVUE 10, and hardware for
mounting the ENC100 to a tripod, tower, or pole.
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FIGURE 7-4. ENC100 is a small enclosure that can house one BaroVUE 10
7.3.4 DIN-rail mounting
The BaroVUE 10 can also be mounted to a DIN Rail using the DIN Rail mounting kit (purchased
separately). The DIN Rail mounting kit contains the following parts:
Table 7-4: DIN-rail components
Quantity Description
1 BaroVUE 10 DIN rail adapter plate
2 6 mm M3 Pozi-drive screws
3 DIN rail mount
FIGURE 7-5. Din-rail kit
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FIGURE 7-6. BaroVUE 10 with optional DIN Rail mounting kit
8. Operation
This section discusses the following:
8.1 Factory settings 16
8.2 SDI-12 commands 16
8.3 Quality metric 17
8.4 Correcting pressure to sea level 18
8.5 Device Configuration Utility 18
8.6 RS-232 polled mode commands 23
8.7 Main menu 25
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8.1 Factory settings
Table 8-1: Factory Settings
Parameter Setting
SDI-12 Address 0
RS-232 Data Bits 8
RS-232 Stop Bits 1
RS-232 Parity None
RS-232 Baud Rate 9600
Pressure Units hPa
Temperature Units Celsius
8.2 SDI-12 commands
The BaroVUE 10 supports the commands listed in Table 8-2 (p. 17). When using an M! command,
the data logger waits for the time specified by the sensor, sends the D! command, pauses its
operation, and waits until either it receives the data from the sensor or the sensor timeout
expires. If the data logger receives no response, it will send the command a total of three times,
with three retries for each attempt, or until a response is received.
A C! command follows the same pattern as an M! command with the exception that it does not
require the data logger to pause its operation until the values are ready. Rather, the data logger
picks up the data with the D! command on the next pass through the program. Another
measurement request is then sent so that data is ready on the next scan.
As measurement data is transferred between the BaroVUE 10 and data logger digitally, there are
no offset errors incurred with increasing cable length as seen with analog sensors. However, with
increasing cable length, there is still a point when digital communications break down, resulting
in either no response or excessive SDI-12 retries and incorrect data due to noise problems. (Using
SDI-12 commands like MC!, which adds a cyclic redundancy check (CRC), can significantly
improve incorrect data issues.)
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Table 8-2: BaroVUE 10 SDI-12 commands
SDI-12 command
(a is the sensor address)
Values Returned
or Function Units
aM!, aC!, aMC!, or aCC!
1. Pressure
2. Temperature
3. Quality Metric
1. hPa (millibar)
2. °C
3. N/A
aM1!, aC1!,
aMC1!, or aCC1!
1. Pressure
2. Temperature
3. Quality Metric
1. kPa
2. °C
3. N/A
aM2!, aC2!,
aMC2!, or aCC2!
1. Pressure
2. Temperature
3. Quality Metric
1. in Hg
2. °F
3. N/A
aM3!, aC3!,
aMC3!, or aCC3!
1. Pressure
2. Temperature
3. Quality Metric
1. mm Hg
2. °C
3. N/A
aM4!, aC4!,
aMC4!, or aCC4!
1. Pressure
2. Temperature
3. Quality Metric
1. psia
2. °F
3. N/A
?! Returns the SDI-12 address 
8.3 Quality metric
For each pressure value, the BaroVUE 10 can output a number known as the quality metric (QM).
The QM indicates the quality in the pressure measurement. For more information about the QM,
refer to the following table.
Table 8-3: Quality metric numbers
QM range Description Comments
> 6 Sensor freshly calibrated 
5 to 5.99 Sensor working well The sensor card is working well. All elements agree
to a high level.
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