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Magnetic Mineralization level ranges from 0-99 and is 

displayed in the Magnetic Mineralization Indicator on the 

right side of the main screen. This measurement can be 

summarized as the amount of the magnetic property and 

intensity of the ground. Simply, if you are working on a 

ground with intense and magnetic minerals, this value will 

Hot rocks are classified as negative or positive based on their ID being low or high in 

comparison to the ID of the soil they are in. One or both of the types may be present in a 

field. The negative and positive effects mentioned here will only be valid if ground 

balancing is properly done on the existing ground. Otherwise, soil itself will not act 

differently from hot rocks in terms of ID. In ''Ground Tracking'' however, conditions will 

differ. Therefore, the effects of hot rocks in ''Ground Tracking'' will be discussed separately. 

Here we are referring to a proper ground balance without ''Ground Tracking''. 

Positive hot rocks act and sound just like metals. In the General Search mode, when you 

sweep the search coil over them, they tend to give a short ''zip zip'' sound. If the signal is 

strong enough, the device may also give an ID for these rocks. Negative hot rocks, on the 

other hand, tend to give a longer ''boing'' sound when the search coil is swept over them. 

The device will not give an ID for these rocks regardless of the signal strength.

In discrimination modes, positive hot rocks will give a typical metal sound again. Negative 

hot rocks will not give any sound in these modes (except for occasional false signals). 

Therefore, while searching in the field, you can decide by listening to the warning tones 

emitted by the device. If you get a metal tone, it means that you have either detected a 

metal or a positive hot rock. If you get a strong signal and a stable ID, you can determine 

whether it is a hot rock or a metal by looking at the ID. Please keep in mind though weaker 

signals tend to give different IDs and metals under rocks may produce different metal 

signals. Consequently, digging up a target signal is the best option.

If you are using the discrimination modes and know the IDs of the hot rocks around you, you 

can use ID masking to eliminate these rocks. However, this may not be sufficient to avoid all 

rock signals. The device may still receive signals from rocks because soil and hot rocks 

together will form a combined effect and generate a different ID than those of rocks.

HOT ROCKS and SEARCHING IN ROCKY AREAS

be high. If the ground has low magnetic intensity, this value will be small.

This measurement is important from two aspects. First, detection depth is low in areas with 

high magnetic mineralization and the user should be aware of this fact. Second, magnetic 

mineralization is a property also found in hot rocks and measuring its level will play an 

important role for the device to eliminate false signals caused by hot rocks.

Target

ID

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Target

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FORS / Page 26

www.noktadetectors.com

NOKTA DETECTORS

MAGNETIC MINERALIZATION LEVEL

Summary of Contents for Fors Tech

Page 1: ......

Page 2: ...USER MANUAL...

Page 3: ...fessional staff Seeking to create different kind of technology Nokta Detectors offers both high quality products and services to its consumers all around the world Nokta Detectors has been operating u...

Page 4: ...D TARGET ID and ID MASKING PINPOINT DEPTH INDICATION SWEEP SPEED and TARGET IDENTIFICATION LARGE or SHALLOW TARGETS FALSE SIGNALS and COMMON CAUSES MAGNETIC MINERALIZATION LEVEL HOT ROCKS AND SEARCHIN...

Page 5: ...ce indoors The device will constantly give target signals inside places like homes where there are many metals present Use the device outdoors in open fields Do not let another detector or an electrom...

Page 6: ...ttached Place the system box on the rail behind the armrest and push forward Then secure by tightening the nuts Attach the armrest strap by inserting it through the holes 1 System Box 2 Handle and S R...

Page 7: ...telescopic shaft 2 Place the shaft on the coil as shown in the picture 3 Secure by tightening the bolt and the wingnut Wrap the coil cable around the shaft all the way up as shown in the picture and a...

Page 8: ...you are standing in an upright position your arm is relaxed and the search coil is approximately 5cm 2 above the ground Wrong search coil angle Incorrect way of sweeping Wrong search coil angle Correc...

Page 9: ...y rechargeable Ni MH batteries Rechargeable batteries with higher mAh capacity ratings will provide longer run times Using batteries with minimum 2500mAh is recom mended LOW BATTERY The battery icon o...

Page 10: ...rove the performance of the device by activating this feature on suitable ground You can find more details about ground tracking on page 19 3 MENU AND SETTINGS SWITCHES These switches allow you to acc...

Page 11: ...he screen Please read pages 16 20 for more information on ground balance 5 PINPOINT SWITCH It is used to find the exact location of the target Pinpointing saves you digging time by narrowing down the...

Page 12: ...w all the information you need on the numeric display This way you don t need to go back and check the LCD panel constantly This provides great comfort during searching The numeric display backlight t...

Page 13: ...s set by the user in other modes For ideal settings and detailed information please refer to the SENSITIVITY and THRESHOLD settings page 21 Sensitivity level can be adjusted from 1 to 99 The most idea...

Page 14: ...increase or decrease the device s volume based on your preference and environmental conditions Volume level can be adjusted from 0 to 20 When you turn off and on the device it will start with the last...

Page 15: ...rget depth and sweep speed When you turn off and on the device it will start with the last vibration level you chose This setting is common to all modes changes will take effect in all modes The speed...

Page 16: ...tion in the menu the backlight will turn on and number 88 will appear on the numeric display This way the user can see the correct brightness level on screen and adjust it accordingly If you change th...

Page 17: ...e is silent when there is no metal present Discrimination modes have some common features but they have slight behavioral differences ID Masking is a common feature used frequently in these modes ID M...

Page 18: ...UCTIVE GROUND COG This is the special mode of FORS Tech designed for conductive ground wet beach sand alkali sand etc What is special about this mode is that it will not react to iron or similar targe...

Page 19: ...in all modes 1 Find a spot on the ground where there is no metal 2 Press and hold the ground balance button and pump the search coil up and down from about 15 20 cm 6 8 above the ground down to 3 cm...

Page 20: ...th some practice To ground balance manually 1 Find a spot on the ground where there is no metal 2 Select the General Search Mode Pump the search coil up and down from about 15 20 cm 6 8 above the grou...

Page 21: ...e setting It does not provide the user any kind of feedback such as the ground balance value or the beep sound in the auto ground balance When Ground Tracking is active the device may emit a loud audi...

Page 22: ...he ground balancing was successful On the contrary if the device receives noise as the search coil approaches the ground it means that the ground balance has failed In this case change your location a...

Page 23: ...opping sounds and false signals It is important to set the sensitivity setting to the highest level possible where no major popping sounds are heard For example if the noise level is suitable for sear...

Page 24: ...processing Therefore although it may detect very deep or small targets it may not be able to generate an ID In addition to the target ID there is a color scale at the top of the LCD panel which repres...

Page 25: ...crease it to the number you have determined Please keep in mind that certain metals other than the ones you are masking will also be lost or their signal strength will diminish resulting in loss of de...

Page 26: ...l as well as the numeric display on the handle see page 25 The signal tone increases in pitch and volume as the search coil approaches the target In the pinpoint mode the device does not discriminate...

Page 27: ...or down and always keep it parallel to the ground Shallow targets may give multiple responses to the device If you suspect a shallow target lift the search coil and sweep slowly until you get a singl...

Page 28: ...l give a typical metal sound again Negative hot rocks will not give any sound in these modes except for occasional false signals Therefore while searching in the field you can decide by listening to t...

Page 29: ...mode or set the ID Masking below 40 if you are searching for ferrous metals When the ground tracking is active the device may give a warning tone and ID when it passes over a hot rock because the eff...

Page 30: ...ssed for automatic ground balancing It does not indicate any issues or errors It just tells you what to do COIL NOT CONNECTED It indicates an interruption in the search coil transmitter signal The sea...

Page 31: ...device to emit different sounds during this process 6 Turn off and on the device again Go to the menu to check whether your desired startup settings are saved or not Changing the startup settings do n...

Page 32: ...width Motion multi derivative 4 General Discrimination 2 3 Conductive Ground 5 3 tones Auto and Manual Yes Yes Yes Yes 1 99 0 99 28 5x17 8 cm 11 2 x 7 0 waterproof DD 1 8 kg 3 9 lbs including batterie...

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