Data relating to output-test the 22 the Mars 1998

(Test of the 100 m / Statistical said - because they belong to him - " of Valérian")

A remark is essential: If one can say that our two colleagues detect quickly (too much), they them also lost many interesting targets. If the " cheeses " giving the percentages of the currencies discovered are right, here what we can add in the light of a recent test on March 22, 1998.

On 31 prospectors having taken part in the following test, the results are very variable: thus we had asked the users to traverse 100 m and to count the numbers of sweepings which they made. During this time, we measured the time and the width of sweepings.

Total average:

• Numbers of sweepings: 538
• Time to traverse 100 m: 9 minutes and two seconds
• Width of sweeping: 1 meter and 51 centimetres
• Surface average probed by tape of 100m X 1,51m with a diameter of head of detection of 22 cm: 178,72 m²
• Loss expressed as a percentage related to the way of detecting: 37,5 %
• Surface really probed per hour: 644,10 m²
• To probe one hectare, it thus takes 10 hours, but it is necessary to add time to dig the holes.
• One can thus reasonably think that to probe really a hectare seriously, one needs the double of time. And this same when one has the practice!
• A number of parts per hour: 0,88
• A number of holes per hour: 6,7
• On average, a sweeping every 1,2 seconds

Some individual data on a course of 100 m

• That which swept it -: 228 (and lost 73 % of surface) It would have found 0,36 part per hour
• That which swept to it +:1170 (cover 57,4 % more) It would have found 1,46 part per hour
• That which spent ' time: 3 min and 20 seconds. It prospects one hectare in 3 hours and 31 seconds!
• That which put it + time: 21 min and 40 seconds. It prospects one hectare of 23 hours and 20 seconds!

(Certain apparatuses can beings considered as inoffensive, to see the continuation...)

47 prospectors had been given go on a virgin field of any known archeological site (front and after detection) at the time of this output organized to English by our School of the Prospection.

With this occasion, the organizers had asked to adjust the apparatuses so as to eliminate a wrought iron nail (normally employed by all the detectorists).

Here what was found in 4 hours thirty of time, right before a good storm...

Total surface of the field: 20 hectares (in fallow) knowing that on average, a sweeping is made into 1,250 second... and that 2491 targets were detected in 4 hours thirty.

One thus needs 11, 57 hours to detect one hectare, that is to say 4,166 seconds per m².

47 prospectors having detected 4. 30, that makes us 211,5 hours for which it is necessary to withdraw time to dig (and others) on the 2 491 targets, let us count 30 seconds per target. We obtain 20,75 hours that one cuts off with the 211,5 preceding ones. What gives 190,75: 11,57 = 16, 48 hectares (in theory since we must withdraw 37 % of losses dependent on the way of detecting and not far from 15 % because to this number, the prospectors crossed several tens of time.

Let us divide 16,48 in almost two to keep only 10 hectares, which seems closer to reality).

These 2 491 (representing 80 kilos and 200 grams) objects were made up as follows:

The currencies out of copper or bronze are all, except one, in very bad condition, we found:

The silver moneys are 1850 to 1914 including two foreign.

Parmis the other objects found, we could identify:

A prospector alone would have put one year and half at a rate of three hours of average per week to do as much of it. He would have spent 232 hours and 15 minutes. He would have found on average 0,37 parts of the hour and 10,35 objects or rather should tell us waste considering the state! Beautiful profitability is not this '!

A) The apparatuses which found it + ferrous ore:

1^er : one 1266 with 50 targets regulated out of 4 of discri - its user at 4 years of detection. He found 105 targets on the whole and 0 part.

2 2nd: a Musketeer XS with 30 targets, regulated on 4 of discri - its user at 4 years of detection. He found 42 targets on the whole (in two hours) and 2 parts.

3 2nd: a CZ5 with 28 targets, regulated on 1 of discri - 2 years of detection. It found 6 parts and 112 targets on the whole.

4 2nd: one 1235 with 25 targets, regulated on 5 of discri - 3 year of detection. It found 98 targets on the whole and 7 currencies (the record).

5 2nd: Tésoro cutlass µmax with 25 ferrous targets - 3 years of detection, regulated on 2 of discri; It found 2 currencies and 83 targets on the whole.

6 2nd: one 1265 regulated out of 4 of discri with 24 ferrous ores - 17 years of detection, 3 currencies and 61 targets on the whole (it detected only two hours)

7 2nd: a model old Musketeer regulated on 1 of discri with 22 ferrous ore and 4 currencies, its user at 5 years of detection and found 67 targets on the whole.

8 2nd: one 1265 regulated out of 4 of discri with 20 ferrous ores and 5 currencies on a total of 44 targets (it detected only 2 hours)

9 2nd: a Musketeer XS regulated on 2 discri, its user at 3 years of detection and found 20 ferrous ores, 51 targets on the whole and 0 currencies.

10 2nd: a CZ5 with 19 ferrous ore and 43 targets on the whole of which a currency; Its female user has detected for 2 years - discri regulated on 1.

B) The apparatuses which found it - ferrous ore or more the non-ferrous one:

1^er : Sovereign with 102 targets non-ferrous and only 2 ferrous, regulated on 0 of discri, its user at 8 years of detection, it found 5 currencies.

2 2nd : Tesoro Silver sabres µmax with 102 non-ferrous targets and 9 ferrous, regulated on 0 of dicri, its user is 3 years old of detection and it found 6 currencies.

3 2nd : a CZ5 with 84 nonferrous targets and 28 ferrous, regulated on 1 of discri, its user is 3 years old of detection and it found 6 currencies.

4 2nd : Minelab Sovereign regulated on 0 of discri having found 68 targets non-ferrous and only one ferrous and 4 currencies, its user at 3 years of detection.

5 2nd : a Scope 1220 regulated out of 4 of discri, its user is 15 years old of detection; It found 65 non-ferrous, 10 ferrous ores and 2 currencies.

6 2nd : a Musketeer XS regulated on 4 of discri, his female user is 3 years old of detection, it found 65 non-ferrous, 10 ferrous ores and 1 currency.

7 2nd : one 1235 regulated out of 5 of discri with 63 non-ferrous, 25 ferrous ores and 7 currencies (even as with the A) 4 2nd position)

8 2nd : a TR 770 with 62 nonferrous targets, 13 ferrous ore and 0 currencies (even as to C) the 8 2nd position) and always 16 years of seniority.

9 2nd : one 1266 regulated out of 4 of discri with 56 nonferrous targets, 12 ferrous and 6 currencies; its user is 5 years old of detection.

10 2nd : Tesoro cutlass µmax regulated on 2 of discri with 48 targets nonferrous, 25 ferrous and 2 currencies (even female user that to C) the 6 2nd position)

C) the apparatuses which found the most targets on the whole:

1^er : Tesoro Silver sabres µmax with 117 targets on the whole (even user that in the paragraph B), 2 2nd position.)

2 2nd : a CZ5 with 112 targets on the whole (even as with the B) 3 2nd position.)

3 2nd : one 1266 with 105 targets on the whole (even as with the A) 1 era position)

4 2nd : Sovereign with 103 targets on the whole (even as with the B) 1 era position)

5 2nd : one 1235 with 98 targets on the whole (even as with the A) 4 2nd position)

6 2nd : Tesoro cutlass µmax with 83 targets on the whole including 25 ferrous and 2 currencies, regulated on 2 of discri and 3 years of detection for its female user (even as A) 5 2nd position).

7 2nd : a Scope 1220 with 75 targets on the whole including 10 ferrous ore and 2 currencies. Regulated on 4 of discri, its user is 15 years old of detection (even as B) 5 2nd position)

8 2nd : a Scope TR 770 (an ancestor) regulated on 4 of discri with 75 targets on the whole 13 ferrous ore and 0 currencies (not of chance)

9 2nd : a Musketeer XS with 75 targets 10 ferrous ores and a currency, regulated on 4 and of which are female user are 3 years old of detection (even as with the B) 6 2nd position)

10 2nd : Tesoro µmax with 75 targets also 15 ferrous ore and 2 currencies, regulated on 2 and 18 years of seniority.

D) The apparatuses which found less targets (all confused)

47 2nd (the Last): a Viking 6 dx with 12 targets (beginning)

46 2nd (the Last but one): Classic 3 slx with 13 targets regulated out of 2 of discri and 3 years of detection (not very representative of the performances of the classic 3. Without any doubt dependent on the way of detecting of the user and his knowledge of detection in the fields.

45 2nd (Before before the last): CS2Mx scope with 14 targets. The user begins. Without any doubt dependent on the way of detecting of the user and his knowledge of detection in the fields.

44 2nd : Garret CX2 regulated on 47 of discri and 3 years of detection and 18 found targets including 3 ferrous and a currency.

43 2nd : a Viking 5 with 20 targets including 13 ferrous and his operator begins.

42 2nd : Quick Draw with 23 targets including 3 ferrous, regulated on 2 of discri, its users is only one year old of detection.

41 2nd : Classic 3 regulated on one of discri and 23 targets including 9 ferrous. (It holds its head of detection to 10 cm of the ground) and it has begun for 15 days. It is its first rally and one can applaud it!

40 2nd : Garret CX3, its user are 18 years old of detection (you read well). It found 29 targets including 8 ferrous and all the same 3 currencies.

E) About the apparatuses which found the most currencies:

In the current state of the things, even if the 1235 in found more, (then just after a CZ5 of Tesoro, the 1265, Sovereign, a model old Musketeer, Cx3 and the GTI 2000 and one 1220) let us recall that it is the man who is behind the machine which does all. The detector is not that a tool like the painter has his brush, the mason his trowel!

Somebody who could better analyze the sounds and knows his apparatus very well, even if it has only 2 or 3 years of detection behind him finds as much if not more (and even sometimes well more) that that which has 15 or 20 years of detection. All is thus in the technique. Technique how some did not succeed in yet controlling even after five or 8 years of detection! It would thus not have been just to compare either the apparatuses, or the prospectors only on the criterion of the currencies.

To be perfectly objective, we should well announce that certain apparatuses undoubtedly would have behaved better if it had been held by accustomed detection (it is a little the case of the classic 3 for example).

One thus deduces from it that to be perfectly valid such a test must be made with users having the same level of experiment. It does not remain less true about it than we have an idea different from the market of the metal detectors... what would not like all the world, users included/understood (especially users).