Related Manuals for RMI FLM4 DIFlux
Summary of Contents for RMI FLM4 DIFlux
- Page 1 Royal Meteorological Institute of Belgium FLM4 DIFlux User manual 07/2021 Rev.1 Manufactured by: Centre de Physique du Globe 5670 Dourbes Belgium Contact: support-mv@meteo.be 1 / 32 FLM4 DIFlux User Manual Rev.1...
- Page 2 Overview The FLM4 DIFlux is a precision instrument used for determining the orientation of the geomagnetic field vector. Operated with care, this DIFlux is able to determine the geomagnetic field declination and inclination with an accuracy of a few arcseconds.
- Page 3 2. Select button up 9. Fluxgate connector 3. Select button down 10. Data transfer connector 4. Select button OK 11. Sunshot add-on connector 5. Screen 6. Battery charger socket PJ1 7. Green led 3 / 32 FLM4 DIFlux User Manual Rev.1...
- Page 4 7, 8 Figure 2: FLM4 electronics. A convenient foot is foreseen (operate according to markings 1 & 2) 4 / 32 FLM4 DIFlux User Manual Rev.1...
- Page 5 Standard equipment and optional accessories Figure 3 FLM4 DIFlux in its carrying case Non-magnetic theodolite TDJ6E-NM 1 pc Instrument carrying case 1 pc Dust Cover 1 pc Objective Cover 1 pc Plummet 1 pc Adjustment Pins 2 pcs Soft Hair Brush 1 pc...
- Page 6 3. ERASE DATALOGGER 4. SEND DATA TO PC 5. UTILITY 1. BACKLIGHT ON 2. BACKLIGHT OFF 3. BKL INTENSITY To go back in the menu, keep pressing on the select button OK 6 / 32 FLM4 DIFlux User Manual Rev.1...
- Page 7 If # Valid Sats remains lower than 7, try to find a better reception location. For precise timing, ensure that at least 8 satellites are considered. The console clock has a typical timing drift better or equal than 2s/day. 7 / 32 FLM4 DIFlux User Manual Rev.1...
- Page 8 Manual shot can refer to the SUN or to POLARIS Figure 7 manual shot menui The manual method requires the observer to point the telescope to the center of the star and to record the UTC time. 8 / 32 FLM4 DIFlux User Manual Rev.1...
- Page 9 Azimuth of the sun/star (+/-180°) in degrees, minutes, seconds to 0.1” at this time and location UTC date UTC time to 0.01s WGS84 local latitude in degrees, minutes, seconds to 0.001” WGS84 local longitude in degrees, minutes, seconds to 0.001” 9 / 32 FLM4 DIFlux User Manual Rev.1...
- Page 10 Figure 10: Sunshot add-on is required for automatic sunshot (please contact us if interested) Rasson, J. L., Hendrickx, O., and Marin, J.-L.: Semiautomatic sun shots with the WIDIF DIflux, Geosci. Instrum. Method. Data Syst., 6, 257-261, https://doi.org/10.5194/gi-6-257-2017, 2017. 10 / 32 FLM4 DIFlux User Manual Rev.1...
- Page 11 11 hours of record. Minute samples are taken at the round minute with timestamp hh:mm:00 with no averaging taking place. To start, select menu item OK. The following menu appears: DATALOGGER and press 11 / 32 FLM4 DIFlux User Manual Rev.1...
- Page 12 The recording can be paused at any time by a long press on OK. The command WRITE must be issued again to continue the recording. DATALOGGER The data are stored in flash memory and will not be erased when the console is switched off. 12 / 32 FLM4 DIFlux User Manual Rev.1...
- Page 13 ”. Using the up arrow key, you can change the answer to ”. If you really want to erase, “NO “YES ” key, and this will erase all logged data. “OK press the Figure 14: Erase data 13 / 32 FLM4 DIFlux User Manual Rev.1...
- Page 14 SEND DATA TO PC complete data memory content will be sent and appear in the Tera-Term window. This data can then be manipulated (copy/paste) for further processing. 14 / 32 FLM4 DIFlux User Manual Rev.1...
- Page 15 We recommend to keep it off when performing measurements under sunny conditions and / or to maximize power autonomy. In order to keep your backlight intensity preference in memory, keep pushing on “OK” until you reach the main menu. 15 / 32 FLM4 DIFlux User Manual Rev.1...
- Page 16 3. The blue led flashes at 1Hz: problem with the battery (excessive imbalance between the two cells, short circuit on one or more cells, one or two cells out of service, temperature too high in the battery pack, battery not present,...) 16 / 32 FLM4 DIFlux User Manual Rev.1...
- Page 17 7V6. If voltage is higher, simply leave the instrument ON in the “Fluxgate + Clock” menu until it reaches the desired voltage. - to store the FLM4 DIFlux in convenient conditions. Iin particular, temperature should be between 5 ° C and 25 ° C (between 41°F and 77°F ) 17 / 32 FLM4 DIFlux User Manual Rev.1...
- Page 18 Annex 1: TDJ6E-NM Operating Manual Foreword Thank you for choosing our products! TDJ6E-NM non-magnetic theodolites are special instruments developed by our company for geomagnetism, geology and national defense fields. 18 / 32 FLM4 DIFlux User Manual Rev.1...
- Page 19 Do not use the telescope for this purpose． 1.4 When high precision surveying is undertaken an umbrella should be held over the instrument and the tripod to prevent strong sunlight from striking them directly and affecting their performance． 19 / 32 FLM4 DIFlux User Manual Rev.1...
- Page 20 It can measure horizontal angle, vertical angle, and distance. Therefore, it can by applied to many fields like fourth class triangulation, traverse survey, various mines, railway, bridge, fairway, urban construction, hydrogeological investigation, farmland, water conservation and transportation. 20 / 32 FLM4 DIFlux User Manual Rev.1...
- Page 21 Diameter of vertical circle 76mm Graduation interval 1° (g) Graduation interval of tape measure 1"(c) Estimation reading to 0.1" (0.2°) Reading microscope Magnification of the horizontal system 68X Magnification of the vertical system 65.4X 21 / 32 FLM4 DIFlux User Manual Rev.1...
- Page 22 Angle of visual field 5° Range of focusing 0.7-∞ Weights and dimensions of instrument Net weight 4.3kg Height of horizontal axis 207mm Dimension 136mm×130mm×286mm Optical system picture (Fig. 1) Instrument structure picture (Fig. 2, Fig3) 22 / 32 FLM4 DIFlux User Manual Rev.1...
- Page 23 23 / 32 FLM4 DIFlux User Manual Rev.1...
- Page 24 Place the instrument carefully on the tripod then tighten the central screw properly. 5.3 Leveling the instrument Adjust the circular level of the instrument for rough leveling, and then adjust the tubular level for precision leveling. 5.3.1 Adjust the circular level 24 / 32 FLM4 DIFlux User Manual Rev.1...
- Page 25 3 to make the bubble move to the middle of the level. Repeat the above described procedure several times so that the offset of the bubble does not exceed the allowance for whatever position the alidade is turned. 25 / 32 FLM4 DIFlux User Manual Rev.1...
- Page 26 After finishing the vertical angle measurement, do make the mark “OFF” on the locking knob at the vertical position by turning the knob clockwise. In this case, the compensator is locked safely. 26 / 32 FLM4 DIFlux User Manual Rev.1...
- Page 27 For to its use, it is necessary to depress the horizontal rod 1 of the rotary knob 2. At this moment, knob 2 can be pushed in to effect the mutual 27 / 32 FLM4 DIFlux User Manual Rev.1...
- Page 28 After adjusting the tubular level, the circular level should be checked immediately. If the bubble of the circular level deviates from the center, adjust the three bleed screws beneath it so that the bubble is centered. 28 / 32 FLM4 DIFlux User Manual Rev.1...
- Page 29 If so, adjustment is necessary. 6.3.1 Screw the protective cap of the reticule of the telescope in the counter- clockwise direction, and take it off, It is now possible to see the four adjusting screws． 29 / 32 FLM4 DIFlux User Manual Rev.1...
- Page 30 Fig. 12. Therefore, the small access cover 20 on Figure 3 must be removed by unscrewing its holding screw. Replace the access cover when the adjustment is completed. The adjusting range is ±2’. 30 / 32 FLM4 DIFlux User Manual Rev.1...
- Page 31 Loosen or tighten up four screws until a satisfactory result is obtained. 31 / 32 FLM4 DIFlux User Manual Rev.1...
- Page 32 Repeat the above procedure to obtain the better centering. This adjustment should be made at two heights: 1.5 meters and 0.8 meters. After finishing the adjustment, tighten the four screws. 32 / 32 FLM4 DIFlux User Manual Rev.1...
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