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Related Manuals for Stefan Mayer Instruments AM502 Series
Summary of Contents for Stefan Mayer Instruments AM502 Series
- Page 1 AM502 Series Proton Precession Magnetometer Engineered by Alexander Mumm www.alexmumm.de Instruction Manual July 2018 Document Version 4.1 Software Version V0406-0925 Stefan Mayer Instruments GmbH & Co. KG Wallstr. 7, D-46535 Dinslaken, Germany, Phone/Fax: +49 2064 479762/3 www.stefan-mayer.com...
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Page 2: Table Of Contents
Contents 1 Safety Precautions ....................... 3 2 Overview ........................4 3 First Usage ........................5 3.1 Sensor filling and preparation ....................5 3.2 Electrical Connections ......................6 3.3 Power-On and Self-Test....................... 6 3.4 Power-On with optional GPS-Receiver ................7 4 User Interface Concept ....................7 4.1 Push Buttons and Display .................... -
Page 3: Safety Precautions
If the instrument is used in a manner not specified by the manufacturer, the protection provided by the instrument can be impaired. Stefan Mayer Instruments shall not be liable for any direct, indirect, special, incidental or consequential damages arising out of the use of its instruments. -
Page 4: Overview
2 Overview The AM502 is a pulsed proton precession magnetometer that can be used for stationary as well as for mobile measurement of the earth's magnetic field. An optional, external GPS receiver can be connected. It allows the recording of measurement data together with geographic coordinates, including date and time. -
Page 5: First Usage
3 First Usage 3.1 Sensor filling and preparation The sensor is shipped with empty inner volume, so the filling of the proton liquid is subject to the end user. We recommend to use isopropanol or liquid paraffin, and to wear gloves and protective glasses during the filling. -
Page 6: Electrical Connections
3.2 Electrical Connections The magnetometer has three main electrical interfaces at the front side of the control unit. These comprise different pin configurations to avoid confusion. 12V Power Supply (Power, 3 Pins) As already described, a clean 12V power source has to be connected here. The internal circuits are optimized for lead-acid batteries, the usual voltage tolerances of such batteries are allowed. -
Page 7: Power-On With Optional Gps-Receiver
If the measurement logging was activated during previous usage, the instrument will startup in STOP-mode (otherwise it will immediately start to take measurements). This prevents writing of unwanted or unintentional measurements to the internal Flash-memory. Results are displayed immediately after a measurement was taken. There are various display modes that are explained later. -
Page 8: Measurement Display
Display-Mode Edit-Mode Increment the Value (for example to 47750) (OK) 47500 nT TUNING < - + > 47500 nT (OK) Decrement the Value (for example to 47250) Some views do not offer an edit mode (for example when the software version is shown). In some other views the (OK) key will start an immediate action (for example triggering the autotuning). -
Page 9: Key Functions In The Measurement View
4.3 Key Functions in the Measurement View Start/Stop By pressing (OK) shortly, the periodic measurements will be stopped or started. If the periodic measurements are deactivated, the "STOP" message is shown in the upper right corner: 48142.1 nT STOP ===== -10.0 If the period time (see chapter 5.3) is set to "INFINITE", pressing the (OK) key will trigger a single measurement. -
Page 10: Menu Structure
4.5 Menu Structure (+) (–) (OK) 47965.0 nT 47965.0 nT STOP (OK) 071/056 071/056 (+) (–) (OK 3s) (OK) LOGGING REF SET (Select) FREE: 32768 (+) (–) (OK) TUNING (Edit) 47500 nT (+) (–) (OK) PERIOD (Edit) (+) (–) (OK) DISPLAY (Edit) SIGNAL LEVELS... -
Page 11: Functions And Configuration
5 Functions and Configuration 5.1 LOGGING (Data Saving for Computer-Analysis) In this menu the actual logging mode (ON/OFF) and the number of free entries will be shown: LOGGING FREE: 32768 By pressing (OK) a sub-menu with the following points is displayed: Activate Logging LOG ON <... -
Page 12: Tuning (Bandpass Center Frequency)
5.2 TUNING (Bandpass Center Frequency) The magnetometer includes very sensitive amplifier stages because the precession signal is in the range of a few microvolts. To allow a stable frequency measurement, the bandwidth of this signal has to be reduced with band-pass filters. Therefore, it is required to know the approximate range of the magnetic field to be measured: TUNING 48000 nT... -
Page 13: Display (View Configuration)
This is a reasonable limit, because longer polarization times will not significantly increase the number of polarized protons anymore, and would be therefore a waste of electrical energy, causing useless heat in the sensor, too. PERIOD If the polarization time will be increased more and more, the value "INFINITE" will show up at the end. -
Page 14: Sound (Beeper Configuration)
Longitude (only available with GPS receiver connected) GPS LON < - + > This variant shows the longitude measured by the GPS receiver. The aim is to enable the user to follow a constant longitude. Latitude (only available with GPS receiver connected) GPS LAT <... -
Page 15: Autotune (Automatic Tuning)
ALARM –R- >xxxnT If the absolute difference to the reference measurement value (long press (OK)) exceeds xxx the alarm will be triggered. ALARM A-B >xxxnT If the absolute difference between the last and the actual measurement value exceeds xxx the alarm will be triggered. Note: If the sound setting is OFF no alarms will be played. -
Page 16: Technical Specifications
6 Technical Specifications Display resolution: 0.1 nT Absolute accuracy: 2.0 nT Sensitivity: 0.3 nT (at 1/s sampling rate) Measuring range: 30,000 nT to 60,000 nT, other ranges on request Sampling rate: 1/s to 1/min or manual triggering Flash memory: 32768 measurements (including time/date and GPS coordinates) Display: 2x16 characters LCD with bar-graph Computer interface:... -
Page 17: Warranty
In the case of any defect please contact Stefan Mayer Instruments. Serial number: Begin of warranty: End of warranty: Date, signature: Stefan Mayer Instruments GmbH & Co. KG Wallstr. 7, D-46535 Dinslaken, Germany Phone/Fax: +49 2064 479762/3 www.stefan-mayer.com...
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