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TEKNETICS

Comprehensive Operating Manual & Guide to Metal Detecting

TEKNETICS

Comprehensive Operating Manual & Guide to Metal Detecting

CAPABILITIES AND LIMITATIONS

DEPTH 

The T

2

can detect U.S. coins to a depth of about 12-15 inches under good conditions.  Large

objects (55 gallon drums, manhole covers, etc.) can be detected to a depth of several feet.  

Electrical interference from power lines and from electrical appliances and electronic
equipment can reduce detection depth, or cause audible interference, making it necessary for
the user to reduce the sensitivity setting.   Soils with large amounts of iron or salt minerals
may also reduce detection depth or necessitate a reduction in the sensitivity setting.  

TARGET IDENTIFICATION

The T

2

identifies the probable type of metal object by measuring its effective electrical

conductivity, which is displayed as a number from 0 to 99 on the LCD screen.  The effective
electrical conductivity 
of an object depends on its metallic composition, size, shape, and
orientation relative to the searchcoil.  Since coins are minted to tightly controlled specifications,
they can be accurately identified.  Identification of pull-tabs and foil is less consistent because
these kinds of targets come in wide variety.  In general, smaller objects, and objects made
from lower conductivity alloys such as iron, bronze, brass, lead, pewter, and zinc will read
lower on the effective conductivity scale.  Larger objects and objects made from higher
conductivity alloys such as silver, copper, and aluminum, will tend to read higher.  The notable
exceptions are gold, which usually reads low because it is rarely found in large pieces, and
zinc pennies, which read moderately high because of their size and shape.  Although nails and
other iron and steel objects will usually give low readings, ring-shaped pieces of iron (for
instance steel washers and harness rings) will usually produce medium to high readings.  Flat
pieces of iron or steel, such as can lids, will occasionally do the same.

Most targets can be identified accurately in air to a distance of about 10 inches.  The minerals
in many soils will cause identification to be less accurate.  In most soils, effective target
identification can be had to a depth of at least 8 inches. 

REQUIREMENT FOR MOTION; PINPOINT FEATURE    

As with other modern metal detectors, the 

T

2

’s searchcoil must be kept in motion in order to

both detect and identify targets.  The All Metal mode is more forgiving of sweep speed
variation than is the Discrimination mode.

The trigger-activated PinPoint feature continues to detect metal if searchcoil motion stops over
the target.  The PinPoint feature is used primarily to pinpoint the exact location of a target so
that it can be retrieved with a minimum of digging, and does not provide target identification.  

ALL METAL MODE

The All Metal mode is more sensitive and offers better feel than the Discrimination mode, and
is used to find all metal objects present in the ground.  The searchcoil must be in motion for
objects to be detected.   This is a single filter search mode similar to the  “fast autotune”,
“SAT”, or “P4” mode found in other detectors you might already be familiar with.

SENSITIVITY

This controls the electronic gain, and is adjustable from 1 to 99.  In the

presence of electrical interference, high ground mineralization, or variable ground
mineralization, operation will usually be too noisy (wobbly and erratic sound from the speaker)
if the sensitivity is set too high.  At settings above 90, the internal circuit noise of the machine
will probably be audible.   The sensitivity level setting is largely a matter of personal
preference. However, if you cannot hear at least some noise, the smallest or deepest objects
will not be detected.

HUM LEVEL

This is the same thing that some manufacturers call audio threshold.  It is

adjustable from -9 to +9.  For maximum ability to hear the weakest signals, adjust this
background hum level high enough so that it is barely audible while the detector is in use in
the field.  To eliminate the weakest signals, adjust the hum level into the negative region,
which will allow the machine to run silently if the Sensitivity is not set too high.

The hum level changes slightly with each detent step on the Settings knob.  Each number on
the hum level numeric readout corresponds to five steps.

MANUAL GROUND CANCELLATION 

Manual Ground Cancellation can only be performed while in the All Metal mode, but the
resultant setting will carry over if you change into Discrimination mode. See the previous
section on Ground Cancellation for instructions on how to use this feature.

TekneticsMANUAL.qx6  4/2/07  11:02 AM  Page 15

Содержание Teknetics T2

Страница 1: ...Professional Metal Detector Comprehensive Operating Manual and Guide to Metal Detecting...

Страница 2: ...ES Simple easy to use controls Large LCD screen with target identification and operating control displays Straightforward menu driven user interface Bar graph readout of ground mineral concentration T...

Страница 3: ...Numeric Target Identification 19 Probable Target Identification 19 Target Depth 20 G C Phase 20 Settings 20 Messages 20 Bar Graph 21 Battery Indicator 21 Frequency Shifting 21 Capabilities Limitation...

Страница 4: ...search coil the sound will also stop Probable target type will be indicated at the top of the LCD screen 5 If the searchcoil is not in motion and not close to metal the detector should be silent 6 If...

Страница 5: ...ound stem as follows Leave some slack in cable at base of lower stem Secure cable at base of stem with velcro strip Wrap cable loosely around entire stem up to bent part of s rod You will re wrap the...

Страница 6: ...nd outward To best stabilize the detector to your arm and body movement squeeze the sides of the arm rest around your forearm For a very secure fit some users prefer to bend the arm rest in tightly ag...

Страница 7: ...securely As you swing the detector from side to side you want the bolts tight enough so that you do not feel any movement between the pole and arm rest mounting bracket If you notice unwanted movement...

Страница 8: ...ion is adjustable to fit your arm The grip is durable high friction foam elastomer comfortable in any kind of weather The controls are conveniently located and easy to learn how to use Locking collars...

Страница 9: ...ers Varies with adjustment and user s stance and arm hand physiology Sweep Effort lateral moment 5 2 foot pounds 7 1 newton meters Operating Principle VLF induction balance Operating Frequency nominal...

Страница 10: ...sh of the menu button will recall that selection and display the stored value This recall function is useful for a value you want to adjust frequently such as the ground cancellation value SETTINGS Kn...

Страница 11: ...he MENU button and continue pushing to move to the function you want The word SETTING will pop up on the display above the menu and the present setting of that function will be displayed as a number T...

Страница 12: ...etector is calibrated to the actual soil condition the result will be deeper target detection quieter operation and more accurate target identification This calibration or Ground Cancellation can be a...

Страница 13: ...re a total of 500 different settings Under some ground conditions you may be able to hear the individual steps in the setting The Fe3O4 bar graph on the LCD display indicates the amount of magnetic mi...

Страница 14: ...ellation setting NOTE Experienced users often prefer to adjust the ground cancellation to get a weak but audible response when lowering the searchcoil This is called adjusting for positive response Po...

Страница 15: ...audible The sensitivity level setting is largely a matter of personal preference However if you cannot hear at least some noise the smallest or deepest objects will not be detected HUM LEVEL This is...

Страница 16: ...menu selection offers the user a choice among several different methods of audio discrimination to accommodate a variety of search conditions and personal preferences These methods differ in the way...

Страница 17: ...with a high concentration of steel bottle caps Also refer to p 23 for sweep techniques to aid in the identification of steel bottle caps 4 Four different audio tones This method is similar to 3 but wi...

Страница 18: ...the side of the target Then pull the trigger and raise the searchcoil about 2 inches Lifting the searchcoil away from the ground causes the ground signal to go negative the machine becomes silent Now...

Страница 19: ...e typically 83 U S quarter 25 coin clad typically 89 50 coin modern clad typically 92 old silver dollar coin typically 94 US silver Eagle 1 coin typically 95 PROBABLE TARGET I D The probable target ID...

Страница 20: ...soil is so close to the searchcoil that the signal is overloading the circuit the message OVERLOAD RAISE COIL will appear Such overloads will not harm the detector but the detector will not detect me...

Страница 21: ...o dead the BATT legend will start flashing If using NiMH rechargeable batteries the display will remain stuck on the second or third bar for most of the battery life when it drops to the first bar the...

Страница 22: ...wer on the effective conductivity scale Larger objects and objects made from higher conductivity alloys such as silver copper and aluminum will tend to read higher The notable exceptions are gold whic...

Страница 23: ...tector without sweeping it over the ground for instance if not fully assembled or if you are indoors To air test place the searchcoil in a spot where the detector is stable and more than two feet away...

Страница 24: ...stently It also produces more audio clues to the character of the target 3 Lift the searchcoil or sweep at an angle Within 2 inches of a Bi Axial searchcoil the crossed magnetic fields of the Double D...

Страница 25: ...e Targets If an overload warning is not confined to a small spot you are probably overloading on a large object for example a large iron pipe reinforcing steel in concrete or buried sheet metal It is...

Страница 26: ...a broad response the target is probably an aluminum can Practice this by laying a coin and a flattened aluminum can on the ground you will quickly understand how to differentiate the two and will prob...

Страница 27: ...be obtained in an air test This tendency is connected with the T2 s enhanced see through ability that is the ability to find valuable targets in an area where there is a lot of iron trash False Signa...

Страница 28: ...e mineral salts usually produce broad signals which will not be mistaken for a metallic object Common causes are concentrations of mineral fertilizer spots where evaporation has concentrated naturally...

Страница 29: ...nd are common in many gold prospecting areas They are usually but not always drawn to a magnet They are most often reddish in color but are often black brown or yellow On relic hunting sites red clay...

Страница 30: ...e preset will be restored and then use the machine without ground canceling In most areas once you have ground cancelled the ground cancellation setting will remain satisfactory for a long time Howeve...

Страница 31: ...moves down slope from its quartz vein source carried by surface erosion and soil creep So there s gold in that dirt 4 Gold moving down slope eventually reaches a stream channel There it is carried by...

Страница 32: ...o busy throwing out rocks that they missed seeing visible gold A metal detector can find the mistakes of ancient or recent miners In many placer deposits metal detectors go together well with the non...

Страница 33: ...he sensitivity high enough to hear some noise from ground minerals and learn the language of the sounds you hear Most prospectors prefer to use headphones unless consideration for safety for instance...

Страница 34: ...and deep Searching in All Metal mode is recommended However for a really deep cache it may be advantageous to search in Pinpoint frequently releasing the trigger momentarily to maximize sensitivity S...

Страница 35: ...distinguish between ferrous and nonferrous metals The other coil is a receiving antenna which detects changes in the magnetic field caused by the presence of metal Electronic circuits amplify this we...

Страница 36: ...shipping cost prepaid to First Texas Products Shipping cost to First Texas Products is the responsibility of the consumer To return your detector for service please first contact First Texas for a Re...

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