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4  Locating objects

Objects, that are long and very narrow and horizontal but per-

pendicular to the earth’s magnetic field, show just one maximum 

point in practice (Fig. 8).

1

Fig. 8:  Large object lying horizontally and perpendicular to the earth’s 

magnetic field.

 

1 audible signal (beep)

4.3 

Factors influencing the location results

4.3.1 

Size of an object

The magnetometer can also be used to locate small objects, 

for example, nails and screws. The size of an object, however, 

affects the display.
The following applies to small objects:

 

As the magnetometer moves away from an object, the locating 

value and the locating intensity decrease more sharply than 

with larger objects.

Summary of Contents for FerroTec FT 10

Page 1: ...20 04 2016 a 107340 en FerroTec FT 10 Operating instructions...

Page 2: ...Tec FT 10 Handle as seen from above top left handle as seen from below bottom left side view right Display Sensor area Arrow up key Arrow down key Zero point key Menu key ON OFF key Handle Pipe Chargi...

Page 3: ...Lowest sensitivity Alternating field Warning of live cables Sensitivity boost B Sensitivity boost enabled Fig 2 Display with aiming circle view Fig 3 Display with bar view Symbol area Current locatin...

Page 4: ...following WARNING Risk of damage to property Note Tips and important information Enumerated lists numbers letters are used for instructions that must be followed in a specific sequence Bullet lists b...

Page 5: ...t 7 3 8 Automatic power off 8 3 9 Display backlight 8 4 Locating objects 9 4 1 Handling the magnetometer during location 9 4 2 Signals dependent on the position and size of an object 10 4 3 Factors in...

Page 6: ...tteries 21 6 2 Care 22 6 3 Servicing 22 6 4 Solving problems 23 6 4 1 Troubleshooting 23 6 4 2 Error messages 24 7 Appendix 25 7 1 Technical data 25 7 2 Factory default settings 27 7 3 EU declaration...

Page 7: ...object s last movement That is why objects which have been in the ground for a long time are easier to locate than objects that have been placed on the ground for example for a trial detection Non fe...

Page 8: ...the approval of Hermann Sewerin GmbH Use only Hermann Sewerin GmbH accessories for the product Hermann Sewerin GmbH shall not be liable for damages re sulting from the non observance of this informat...

Page 9: ...property For this reason always observe the following safety information Risk of personal injury health risk Handle the magnetometer carefully and safely both during transport and when working The pi...

Page 10: ...nsor area operates Note The selected operating mode only affects the switching on and off of the beep You can choose between two operating modes Hold mode Place your thumb on the sensor area to listen...

Page 11: ...ocating value is displayed as a number As the magnetometer moves closer to the object the locating value increases As the magnetometer moves away from the object the locating value decreases Visual re...

Page 12: ...l can be found in section 5 4 on page 18 3 5 Alternating field display warning of live cables The magnetometer automatically warns of live cables If there is a live cable in the locating area the alte...

Page 13: ...sitivity Information about changing the sensitivity setting and activating the sensitivity boost can be found in section 5 2 on page 17 3 7 Zero point The zero point is the value at which a current ac...

Page 14: ...battery capacity is too low BAT LOW appears briefly on the screen during shutdown Fig 5 Automatic power off Magnetometer is not operated for 20 minutes left The remaining battery capacity is too low...

Page 15: ...as pos sible Information about sources of interference can be found in section 4 3 2 on page 14 Hold the magnetometer above the surface as upright as pos sible1 Hold the magnetometer away from your b...

Page 16: ...e display can show positive or negative values This applies to objects with the following position and size objects in a vertical position Fig 6 small objects in a horizontal position 1 3 2 4 1 3 2 4...

Page 17: ...earth s magnetic field The maximum points occur at each end of the object Fig 7 One of the maximum points is positive the other is negative 1 3 2 4 Fig 7 Large object lying horizontally in parallel t...

Page 18: ...he earth s magnetic field 1 audible signal beep 4 3 Factors influencing the location results 4 3 1 Size of an object The magnetometer can also be used to locate small objects for example nails and scr...

Page 19: ...with larger objects Note You can use these effects to help you specifically locate small or large objects Vary the sensitivity and the distance of the magnetometer from the surface according to the s...

Page 20: ...e Reduce the number of sources of interference that you yourself have control over Carry as few sources of interference on your body as possible keys mobile phone etc Wear safety shoes with toecaps ma...

Page 21: ...the magnetometer firmly keeping your fingers away from the sensor area Keep the magnetometer as steady as possible until it is switched on so that the zero point is correctly set 1 Hold the ON OFF ke...

Page 22: ...is then ready for use Fig 12 Magnetometer ready for use with aiming circle view In the example shown there is at least one object in the locat ing area The magnetometer locates continuously To stop t...

Page 23: ...o set the value to 1 4 Press the Menu key The sensitivity boost is enabled The magnetometer is ready for use again 5 Change the sensitivity according to the location scenario see above Note The sensit...

Page 24: ...of the sensor area at least 1 cm to switch off the beep It is best to position your thumb beside the sensor area 5 4 2 In toggle mode The magnetometer is switched on The value under MODE in the menu i...

Page 25: ...ming circle view BOOST Sensitivity boost 0 Disabled 1 Enabled LED Display illumina tion 0 Disabled energy saving mode 1 Enabled RESET Factory default settings 0 The menu items MODE VIEW BOOST LED can...

Page 26: ...e factory default settings You can restore the factory default settings at any time in the SETUP menu Note When you reset the settings the sensitivity setting is also reset 1 Press the Menu key The SE...

Page 27: ...batteries are completely empty the charging process lasts approx four hours The M4 AC DC adapter is required to charge the batteries Alter natively an M4 vehicle cable can be used The AC DC adapter is...

Page 28: ...contamination immediately WARNING Risk of scratching The display surface is plastic Do not use any mechanical or aggressive chemical agents for care 6 3 Servicing SEWERIN recommends having the magneto...

Page 29: ...lem Possible cause Corrective action Sensor area doesnotrespond The sensor area was touched while the magnetometer was being switched on Switch off the mag netometer and switch it on again Sensor area...

Page 30: ...fault Display Error code is visible for approx two seconds in the top right hand corner of the screen ERR003 Meaning Error during the charging process AC DC adapter faulty or permitted operating tempe...

Page 31: ...age temperature 25 C 60 C Humidity 15 r h to 90 r h non condensing Atmospheric pressure 950 hPa 1100 hPa Protection rating Total IP65 Pipe IP67 Permitted operating envi ronments Pipe in normal positio...

Page 32: ...26 7 Appendix Measurement Filter 50 60 Hz Measurement principle Fluxgate Measuring rate 400 Hz resolution 16 bit Indication range 0 999 digit Indication error 20 of end value Sensitivity levels 6...

Page 33: ...rements of the following guidelines 2014 30 EU The complete declaration of conformity can be found online 7 4 Advice on disposal The European Waste Catalogue EWC governs the disposal of appliances and...

Page 34: ...20 27 H Handling during location 9 Hold mode 4 I Interference fields 14 L LED 19 Live cables 6 Location handling the magnetometer 9 M Menu 19 MODE 19 N NiMH rechargeable battery 4 O Object location 9...

Page 35: ...29 8 Index playback 5 visual representation 5 Sources of interference 14 Start screen 15 Switching off 16 Switching on 15 T Toggle mode 4 U Use intended 2 V VIEW 19 Z Zero point 7 adjusting 17...

Page 36: ...fr sewerin sewerin fr Sewerin Ltd Hertfordshire UK Phone 44 1462 634363 www sewerin co uk info sewerin co uk SEWERIN IBERIA S L Centro de Negocios Eisenhower Avenida Sur del Aeropuerto de Barajas 28 O...

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