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Comprehensive Operating Manual & Guide to Metal Detecting 

PRO-TECH 

ASSEMBLY

1

Position S-Rod upright.

2

Rotate the LOCKING COLLAR fully in the counterclockwise direction.

3

Insert your finger inside the tube and make sure the INTERNAL CAM LOCK is flush
with the inside of the tube.

4

Insert the MIDDLE STEM into the S-ROD,

with the SILVER BUTTON pointed upward

5

Rotate the MIDDLE STEM until the SILVER
BUTTON locates in the hole.

6

Twist the LOCKING COLLAR fully in the clockwise
direction until it locks.

7

Repeat this process on the LOWER STEM.

8

Using the BOLT and KNURLED KNOB, attach the
SEARCHCOIL to the LOWER STEM.

9

Adjust the LOWER STEM to a length that lets you
maintain a comfortable upright posture, with your arm
relaxed at your side, and the SEARCHCOIL parallel
to the ground in front of you.

10

Wind the CABLE securely around the STEMS.

11

Connect CABLE PLUG to housing.
Do not twist the Cable or Plug. Turn Locking Ring
only. Use minimal finger pressure to start the
threads. Do not cross-thread. When the Locking
Ring is fully engaged over the threaded connector,
give it a firm turn to make sure that it is very tight.
When the Locking Ring is fully engaged over the
threaded connector, it may not cover all of the
threads.

12

Tighten both LOCKING COLLARS.

30

PRO-TECH

Comprehensive Operating Manual & Guide to Metal Detecting

SEARCH TECHNIQUES

Target Verification

After detecting a target, do the

following:

1. Walk around the target in a circle.
2. While circling the target, continue

sweeping the searchcoil across the
target.

3. Sweep once every 30° or 40° of the

circle.

If the tone does not change and

the Target-ID value is consistent as
you circle the target, you can be
highly confident of the target's
identification.

If the tone or Target-ID changes

as you circle the target, you may
have multiple targets or an
irregularly shaped object.

If the tone completely disappears

at different angles, the target may
be trash or a low-value metal.  

If you are new to metal detecting,

dig all targets. With practice in the
field, you will soon be able to
correlate audible and visual target
feedback with certain types of metal objects.

Pinpointing in Discrimination Mode:

1. Sweep over target in narrowing side-to-side pattern.
2. Take visual note of spot on ground where “beep” occurs.
3. Step 90° to the side of the target.
4. Sweep searchcoil over same area, at 90° to 1st sweep pattern.
5. This pinpoints the target location with an “X.”

LOCKING

COLLAR

LOCKING

COLLAR

S-ROD

VELCRO

STRAP

VELCRO

STRAP

KNURLED

KNOB

BOLT

SEARCHCOIL

LOWER

STEM

SILVER

BUTTON

SILVER

BUTTON

MIDDLE

STEM

CABLE

PLUG

7

SEARCHCOIL MOVEMENT

When swinging the searchcoil,
be careful to keep it level with the
ground about 1/2 inch from the sur-
face. Never swing the searchcoil
like a pendulum.

WRONG

CORRECT

S-ROD

LOCKING

COLLAR

INTERNAL

CAM LOCK

SILVER BUTTON

MIDDLE

STEM

S-ROD

MIDDLE STEM

2

3

4

4

5

*

Note: Very tall users can purchase the optional Extended Lower Stem (TUBE5X), for extended reach.

Caution:

Forcing in MIDDLE STEM with CAM LOCK raised may form a burr on
camlock. If this happens, remove burr with knife to allow insertion.

Summary of Contents for PRO-TECH

Page 1: ...Professional Metal Detector For the Archaeologist USER S MANUAL 0714...

Page 2: ...tor 2 Do not use indoors This detector is for outdoor use only Many household appliances emit electromagnetic energy which can interfere with the detector If conducting an indoor demonstration turn th...

Page 3: ...int 15 and 15 Operating in All Metal Mode Ground Grab GG Computerized Ground Balancing 16 Setting the Controls 16 Unwanted Noise 16 Sweeping the Searchcoil 16 Reading the Display 17 Target Scale 17 Op...

Page 4: ...d methods as you become more proficient in the field The new PRO TECH is unique among professional metal detectors for its combination of high sensitivity to small targets and its versatile function a...

Page 5: ...pipes bolts and nails In most Dig Site situations you will want to recover all of the metal targets including the iron Ferrous Metals which are made of or contain iron Pinpointing Pinpointing is the p...

Page 6: ...oved from the aluminum tube Armrest Strap The PRO TECH comes with an armrest strap for users who prefer to swing the detector vigorously in order to hold the detector securely against the arm The dete...

Page 7: ...the ground in front of you 10 Wind the CABLE securely around the STEMS 11 Connect CABLE PLUG to housing Do not twist the Cable or Plug Turn Locking Ring only Use minimal finger pressure to start the...

Page 8: ...rtment Battery Life Expect about 15 to 20 hours of life from a 9 volt alkaline battery Rechargeable batteries can provide up to 8 hours of usage per charge Speaker Volume and Battery Charge You may no...

Page 9: ...12 00 position for this demonstration 4 Click the right knob to the left to the DISC setting 5 a Wave the nail over the searchcoil b Press repeatedly while continuing to wave the nail Notice the chan...

Page 10: ...t low settings you will hear no sound ii at mid scale there will be a transition point from no sound to a barely audible choppy sound iii at full scale you will hear a loud constant tone It may also h...

Page 11: ...d with these things in mind 1 Ground Minerals All soils contain minerals Signals from ground minerals can interfere with the signals from metal objects you want to find All soils differ and can differ...

Page 12: ...te depth reading is available using PINPOINT Pinpoint displays target depth in inches The Pinpoint Mode does not require the searchcoil to be in motion to detect metals The ability to hold the searchc...

Page 13: ...and hold to enter no motion PINPOINT Mode In ALL METAL Mode press and hold while bobbing coil to set ground balance In DISC Mode Change discrimination level from 0 to 80 In ALL METAL Mode Change Groun...

Page 14: ...s your current sensitivity setting Sensitivity in DISC Mode The left knob is labeled GAIN and in DISCRIMINATION Mode it alone controls the sensitivity of the detector GAIN in ALL METAL Mode In All Met...

Page 15: ...in if necessary Silent searching will result in the loss of some sensitivity TOUCHPAD CONTROLS 1 GG PINPOINT This button has a dual function depending on the detection mode a In DISC Mode press and ho...

Page 16: ...e you search Refer to the Ground Balancing section pg 22 of this manual for a more in depth description Setting the Controls As you adjust any of the controls notice that the values on the bottom righ...

Page 17: ...e best starting point for achieving the correct setting After you perform the Ground Grab procedure the GND BAL number will change to match your soil You can change the current GND BAL setting by pres...

Page 18: ...sensitivity The higher the setting the deeper objects can be found and the more sensitive the detector is to very small metal objects MODE The right knob is not used in the Discrimination Mode Click...

Page 19: ...manual section on Target Pinpointing for how to narrow down a target s location This technique is indispensable as long buried metals can look exactly like the surrounding soil to the naked eye and ve...

Page 20: ...states 1 Blank no segments displayed 2 Grey segments displayed in a shaded color 3 Black segments are solid black The segments along the arc will remain illuminated in this state as you are pressing...

Page 21: ...O audio Represented by solid segments at DISC value 80 All detected targets induce HIGH tones Represented by solid segments There are no LOW tones No targets under 80 are detected Here is an example...

Page 22: ...nd more accurate target identification How to Ground Balance your detector Ground Balancing procedure with the GG touchpad 1 Turn the detector on and set GAIN at the 12 00 position 2 Click on the righ...

Page 23: ...ASE is the measurement of the ground GND BAL is the detector s internal setting which calibrates the detector to the ground s phase Notice that the GND BAL number is three digits with a decimal point...

Page 24: ...ing is to adjust the metal detector to ignore ground minerals If the setting is incorrect ground minerals will give either a positive or a negative response depending on which direction the adjustment...

Page 25: ...agnetic susceptibility is expressed in micro cgs units In a saltwater environment in the absence of iron minerals the bar graph indicates relative electrical conductivity In soils with greater than 10...

Page 26: ...e the low tone and which will be eliminated All targets audio responses in All Metal Mode will be V C O V C O Voltage Controlled Oscillator is an audio response which provides a good feel for the targ...

Page 27: ...at their ground balance value is a number lower than the soil they are found in They are usually but not always drawn to a magnet They are most often reddish in color but are often black brown or yell...

Page 28: ...ct metal detectors Overall the potential for electrical interference is greater than it was just a few years ago Modern high end metal detectors are a lot more sensitive than older units this also inc...

Page 29: ...e with severe electrical interference a small searchcoil is often a better choice than a large one Distinguishing electrical interference from other problems Electrical interference will often vary as...

Page 30: ...irregularly shaped object If the tone completely disappears at different angles the target may be trash or a low value metal If you are new to metal detecting dig all targets With practice in the fie...

Page 31: ...cate it by the sound The target is located directly under where the sound is loudest Narrow It Down 1 To narrow the response further position the center of the searchcoil near the center of the respon...

Page 32: ...1 inch widescan searchcoil Batteries Single 9 volt rectangular alkaline battery included Operating principle VLF induction balance Operating frequency 19 kHz crystal controlled Reactive overload 10 00...

Page 33: ...Labs for a Return Authorization RA Number Reference the RA number on your package and return the detector within 15 days of calling to Fisher Research Labs Inc 1465 Henry Brennan Dr El Paso TX 79936 P...

Page 34: ...Ta Intr Term Ass Bat Qui Hea Bas Ope Con Ope Ope Gro Targ Hot Ele Sea Targ Dev Wa Acc 34 PRO TECH Comprehensive Operating Manual Guide to Metal Detecting...

Page 35: ...35 Comprehensive Operating Manual Guide to Metal Detecting PRO TECH...

Page 36: ...ool Comes with a durable sheath 12 in length with a 7 serrated blade LESCHE KNIFE Coil Covers Specially made to protect your coil from abrasion and damage 11 DD Ellipse Accessory Coil Cover COVER 11DD...

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