Related Manuals for Bartington Grad-13
Summary of Contents for Bartington Grad-13
- Page 1 OM3100/5 Operation Manual for Grad-13 Digital Three-Axis Magnetic Gradiometer bartington.com...
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Page 2: Table Of Contents
1. About this Manual 1.1. Symbols Glossary 2. Safe Use 3. Introduction 4. Grad-13 Digital Three-Axis Fluxgate Gradiometer 4.1. Grad-13 Battery Box & Multiplexing box 4.2. Grad-13 Cable Assembly 5. Grad-13 Battery Box 5.1. Functional Description 5.2. The Battery Box Front Panel 5.3. -
Page 3: About This Manual
Note that failure to follow the instructions in this manual may invalidate your product’s warranty. If in doubt, do not hesitate to contact Bartington Instruments. Bartington Instruments cannot advise on the integration of this equipment with any third party products. -
Page 4: Safe Use
Consult Bartington Instruments for advice. 3. Introduction The Grad-13 is a three-axis digital fluxgate gradiometer which is available in multiple configurations; two enclosure variants: Grad-13L for environmentally-sealed outdoor operation and Grad-13S for underwater operation down to 200m submersion, three baselines: 500mm, 750mm and 1000mm and two sensor measuring ranges: ±70µT and ±100µT. -
Page 5: Grad-13 Battery Box & Multiplexing Box
Bartington Instruments can provide two options for powering the Grad-13 and converting the signal output to either USB or ethernet output. These options are the Grad-13 Battery Box or the Grad-13 Multiplexing box. Grad-13 can be powered through customer’s own hardware if available. -
Page 6: Grad-13 Battery Box
This section describes the installation and operation of the Grad-13 Battery Box. 5.1. Functional Description The Grad-13 battery box allows connection of one or two Bartington Instruments Grad-13 gradiometers. It powers the gradiometer and converts the RS422 communication to USB. A rechargeable battery is built into the box and a dedicated charger is provided with the unit. -
Page 7: The Battery Box Front Panel
Push and hold for over three - four seconds to turn off. The units are housed in a polycarbonate enclosure. Connectors on the front panel provide connections to two Grad-13’s and to a PC for digital output, with a socket for the charger input. -
Page 8: Power Supply
The battery box contains a lithium ion battery with a nominal voltage of 26V and an energy density of around 7Wh. It is capable of powering a single Grad-13 for up to 16 hours, and two Grad-13s for up to 8 hours, dependent on temperature and cable length. -
Page 9: The Grad-13 Port Multiplexing Box
Re-charge after each use up to at least 80% charge (green LED on charger). If the Grad-13 Battery Box is going to be stored for long periods, then charge the device beforehand and charge at least twice a year to avoid irrecoverable deep discharge. -
Page 10: Installation Of The Grad-13
7.5. Connecting Custom Systems A data protocol DP2629 can be provided if the Grad-13 is to be powered by and connected to a custom system. The API/software may still be able to be used if an Ethernet or Serial... -
Page 11: Operating Instructions
8.2. Visual Grad-13 Software Instructions 8.2.1. Installation In order to connect the Grad-13 to a PC, an RS422 to USB/Ethernet converter is required. The converter used and tested by Bartington instruments is a ‘Brainboxes’ RS422 converter, and this will be referred to in this manual. However, there are many other commercially available converters that can also be used. - Page 12 The software can still be used without Excel installed. 8.2.4. Using the software Open the Visual Grad-13 application (using the VisualGrad13 shortcut from the desktop), this will display the Visual Grad-13 application as shown in Figure 7: Figure 10: Adding a new connection Figure 7: Visual Grad-13 Software Main Window 8.2.4.1.
- Page 13 ‘Connect’ from the main window. Configure Connections Before you can connect to a Grad-13 device, or if you wish to edit a connection, you need to use the ‘Configure Connections’ option in the ‘Connect to a Grad-13’ window to set up your connections.
- Page 14 If connecting via serial connection, the correct COM Port should be selected (this is normally the last one in the list). By default, only the Brainbox ports are listed (to which the Grad-13 is connected), hence you may only see one COM port in the list.
- Page 15 Note: The Baud Rate has to be programmed in the Grad 13, therefore in most cases the default rate should be used. The exception to this is when the Baud rate has been changed by Bartington Instruments in order to output the full 200Hz bandwidth.
- Page 16 Input the ‘IP Address’ and the ‘Port Number’ on the IP Address. (This will be printed on the multiplexing box) After configuring the settings and ensuring the Grad-13 device is powered on and connected, you may test your settings by clicking ‘Test’. This will test the connection but will not leave the connection open, and will disconnect from the Grad-13 upon completion.
- Page 17 Figure 14: Scan Notes Click on ‘Start Scan’ to begin. Once ‘Start Scan’ is clicked, data from the Grad-13 device is collected and stored within the .pct file specified within the Start Scan window. Graphs may be displayed by clicking on ‘Show...
- Page 18 OM3100/5 Figure 15: During a scan Note: The Visual Grad-13 software will sometimes slow down the display of data on the screen when the PC it is running on is unable to handle screen updates at the rate that the data is being collected at (scans are coming in at ~200 scans per sec).
- Page 19 The first tickbox, ‘Use Calibration Details from:’, allows a user to select an alternate calibration file to apply to the Grad-13 data. This option is primarily for use by the Bartington Instruments technical team to apply additional calibration values should it be required. The file is in.txt format, and can be edited using Notepad.
- Page 20 Page 20 of 26 OM3100/5 8.2.4.5. Graphs Three graphs can be displayed using the Visual Grad-13 software: ‘Reference Mag. Graph’: Displays the values being recorded by the reference mag (see • position 2 in Figure 1). ‘Sensing Mag. Graph’: Displays the values being recorded by the reference mag (see •...
- Page 21 Page 21 of 26 OM3100/5 The value of any specific point on the graph can be found by moving the mouse pointer to that point and reading the green marker values at the edge of the graph, as shown in Figure 17.
- Page 22 Page 22 of 26 OM3100/5 8.2.4.7. Data Processor Figure 20:Example Excel Export This application processes the data from the Grad13 Master application, it works with the files that the VisualGrad13 Master application creates and is used to send the data to Excel.
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Page 23: Storage
Store the Gradiometer and in a container in a dry environment with no risk of condensation. Do not leave the Grad-13 exposed to strong magnetic fields (above it’s measuring range) for prolonged periods of time. This can cause performance degradation. -
Page 24: Appendix A: Guidance For Connection To Mains Supply
Page 24 of 26 OM3100/5 Appendix A: Guidance for Connection to Mains Supply 1. Ensure that the mains feed is from a clean AC supply with the following characteristics:- Voltage Range 100V to 240V AC (Selectable on Charger) Frequency... - Page 25 Page 25 of 26 OM3100/5...
- Page 26 ®The copyright of this document is the property of Bartington Instruments Ltd. Bartington is a registered trademark of Bartington Instruments Limited in the following countries: Australia, Brazil, Canada, China, European Union, India, Israel, Japan, Mexico, New Zealand, Norway, Russia, Singapore, South Korea, Switzerland, Turkey, United Kingdom, United States of America and Vietnam.