Tips:
•
Return to the
Main Menu
by pushing the left soft key several times.
•
Carry spare batteries (5-AA) in the carrying case.
•
A continuous measurement can display engineering units when linked to a Site/Sensor
with an engineering unit conversion applied.
•
Leave 1–2 mm of exposed sensor wire on datalogger/multiplexer wiring for VWA
connection . Always disconnect automated system power prior to VWA connection.
Definitions:
Sensor:
An individual vibrating wire sensor. A VWA can store up to 880
unique sensors (40 sites, 22 sensors/site).
Site:
A project or geographic location containing up to 22 sensors.
User:
Operator name and information.
Wiring Guide
VWA Cable
Common Sensor
Sensor
-RED -ONG
Cable Colors
1
Description
Red
2
Orange
2
Red
or Orange
VW Gage
Black
2
Orange
2
Black
White w/Orange
VW Gage
Green
2
Blue
2
Green
or Blue
Therm/RTD
White
2
Blue
2
White
White w/Blue
Therm/RTD
Blue
Yellow
Bare/Clear
Drain Wire
1
If sensor wiring does not match the table, refer to the sensor manufacturer manual to determine the VW gage
wire leads. Some sensors may not have a thermistor or RTD (temperature measurement).
2
Vibrating wire leads are interchangeable (black and red instead of red and black); thermistor leads are similarly
interchangeable.
Read & Record
There are three options to save data when using
Read & Record
.
•
Single
is used when sensors won’t be repeatedly measured in the future (installation
record, baseline reading, troubleshooting).
•
Site/Sensor
is used when sensors will be repeatedly measured and data needs to be
linked to a site. Site/Sensor data is viewable in the field for historical comparison.
•
Continuous
measures a single sensor at a user defined interval ranging from 1 second
to 15 minutes. Used to document installations, live field testing (push-in-piezometer,
well pump test, sensor response, etc.), and for troubleshooting.
Notes:
•
Measurements are not pressure or temperature compensated.
•
Users can view all data. Sites are not user specific.
•
See
Measurement Screens
for an explanation of displayed measurement results.
•
Sites, Sensors, and Users can be created and edited either on the VWA, or with a PC and
keyboard using
VwProjects
.
Meet the Vibrating Wire Analyzer
Meet the Vibrating Wire Analyzer (VWA), the best vibrating wire (vw) field reader
available. Field ready to quickly measure a sensor, save data, and communicate
results with custom PDF reports and spreadsheet output. Measurements are
geo-located with the integrated GPS allowing the VWA to verify locations and
walk you to your sensors. The large color display and VSPECT
TM
technology
1
create
confidence that you are getting the best measurement possible both in the field
and in the office. , when your measurements matter.
1
Protected under U. S. Patent No. 7,779,690
Data Retrieval
Fi
les are transferred to a PC from the VWA using the USB port . Measurement data collected
with the
Read & Record
option is saved as a PDF and/or CSV file. A printable report (PDF) com-
municates results quickly and professionally. Raw data files (CSV) can collect multiple sensors
(site) in a single file for additional spreadsheet analysis and reporting.
1
Export CSV files
(optional)
•
Navigate to the
Main Menu
. See
Operation
.
•
Select
Data
. Choose and export CSV files.
2
Connect VWA to a PC with USB
•
Connect a PC to the VWA with a USB Mini-B cable.
•
Power is supplied through the USB-PC connection.
3
Copy files to PC
•
Find the USB flash memory device (VWA) on the PC.
•
Data files are stored in either the
PDF Reports
or
CSV Data
folder.
•
Copy files to the PC.
•
Ready to print PDF reports
Reports
•
Field documentation
CSV
•
Multiple measurements in one file
Data
•
Spreadsheet analysis
4
Eject VWA from PC
•
Eject the VWA from the PC prior to disconnecting the USB cable.
VwProjects
VwProjects
is a free software package for easier setup of Sites, Sensors, and Users with a PC.
VwProjects
can be downloaded and installed from the VWA memory or from the internet, see
Downloads
.
VwProjects
is used to create and edit a project file that contains information about Sites, Sen-
sors, and Users. Project files can be used to back up or transfer information to other VWA devices.
See
Using VwProjects
for details about creating, editing, and transferring project files.
Notes:
•
A project file contains information about Sites, Sensors, and Users. Measurement
data is saved in the PDF and CSV files, and is NOT saved or transferred in a project
file.
•
You can preview a report title block when creating or editing a user in
VwProjects
.
File Types
The following files are created or used with the VWA. Files are transferred with a USB connection
(see
Data Retrieval
).
PDF:
Measurement Reports
created using
Read & Record
.
CSV: Created by the VWA with
Read & Record
, use for further spreadsheet analysis; see
Data Retrieval
.
VWA: A project file contains information about Users, Sites, and Sensors. Created in the
VWA or with
VwProjects
.
OBJ: Operating system file, created by Campbell Scientific. See
Downloads
.
MANUAL
Info
Link
9/2017
manual pn: 31913
Caution
•
Avoid contact with water, see
Precautions
•
Transport/store in carrying case
•
Measurements are not pressure or temperature corrected
!
Downloads
Visit
www.campbellsci.com/vwanalyzer
to download:
•
VwProjects software
•
Updated operating systems (updated Sensor Library)
•
Manual (this document)
FIELD
QUICK TOUR
Vibrating Wire Analyzer
1
Power
1
, left soft key
2
2
Right soft key
2
3
Enter/select
3
4
Menu navigation arrows (4)
5
Serial number (SN)
6
Battery door
7
Battery door screws (2)
8
Elastic strap connection (2)
9
Measurement cable
10
USB port (PC connection)
11
Measurement cable connection
1
Hold (2–3 s) to turn off
2
Soft keys select the displayed screen
option (when present)
3
Selects the highlighted option
1
2
3
4
5
6
7
8
9
10
11
OFFICE
PDF Reports
12
User specific title
1
13
Project Information
1
14
User-Defined Inputs
15
VSPECT Diagnostics
2
16
Field Notes
17
Sensor Frequency
18
Resistance (Thermistor/RTD)
19
Frequency Spectrum graph
2
20
9
Time Series graph
2
1
Entered manually or with a PC,
see
VwProjects
for details.
2
The
VSPECT Measurement
section
explains how to use and understand
VSPECT data.
12
13
14
15
16
17
18
19
20
Operation
1
Turn on the VWA
•
Install/replace batteries as needed (5-AA)
•
Push power button
2
Select/Create User
•
Links user information to specific measurements
•
User information is documented on PDF reports
3
Connect Sensor
(if measuring)
•
Connect measurement cable . Keyed connector, do not force
•
Match sensor and measurement cable colors . See
Wiring Guide
4
Navigate the Main Menu
•
Return to the
Main Menu
by pushing the left soft key several times.
1
11
9
Read:
Measure a sensor quickly,
Data is NOT saved
Read & Record:
Measure a sensor,
Data is saved
see
Read & Record
Data:
Export data to CSV file, or view saved data
see
Data Retrieval
Settings:
Change system, measurement, or power settings
1
9
10
10
12
•
Quality
• PDF Reports
• Field Ready
9
Link
Read &
Record
Read
Data
Settings
Vibrating Wire Analyzer
Data
Settings
Read
Read &
Record
1
6
