GDD Instrumentation MPP-EM2S Plus User manual
MPP PROBE
Model MPP-EM2S+
Instruction Manual
860 boul. de la Chaudière, suite 200
Québec (Qc), Canada, G1X 4B7
Tel.: +1 (418) 877-4249
Fax: +1 (418) 877-4054
Web site: www.gdd.ca
Instrumentation GDD Inc. 2018-01-16 1
WARNINGS: Measure Stability and Battery Discharge .................................................................... 2
1. Introduction ........................................................................................................................................ 4
2. Mineral Conductivity – General Rules ............................................................................................. 5
3. Equipment List.................................................................................................................................... 6
4. Batteries ............................................................................................................................................... 8
5. Probe buttons and switches.............................................................................................................. 11
6. Archer
2
field computer characteristics ........................................................................................... 13
7. Quick Start......................................................................................................................................... 16
8. Starting............................................................................................................................................... 17
9. Display................................................................................................................................................ 21
10. Setting parameters .......................................................................................................................... 22
11. Reading modes................................................................................................................................. 28
12. Software installation and file transfer........................................................................................... 39
13. Readings interpretation.................................................................................................................. 48
14. How to re-install GDD MPP Software .......................................................................................... 49
15. Software update installation .......................................................................................................... 50
16. Importing a file in Microsoft Excel ............................................................................................... 54
17. Troubleshooting .............................................................................................................................. 56
18. Technical Support........................................................................................................................... 66
Annex 1 : Example of a Dumped File.................................................................................................. 67
Annex 2 : Graphics from Manual and Continuous Modes ............................................................... 68
Table of contents
Instrumentation GDD Inc. 2018-01-16 2
Measure Stability (Drift)
The MPP-EM2S+ is a useful eophysical instrument that will help you to et the information that you
need to desi n an appropriate eophysical survey. In order to obtain stable values (which should be
around 0) and avoid si nal drift, it is highly recommended to leave the probe ON during one hour
before taking the first measurement. After one hour, you must re-initialize the probe and then, you
are ready to take measurements. To minimize the drift once you have started to take measurements,
you must initialize the probe every 1, 5, 10 or 15 minutes. By default, the option 1 minute between
every initialization is activated.
If you want to take measurements ri ht away after turnin on the probe, we su est that you
initialize the probe every minute or, for best results, before each readin for the first 30 to 60
minutes.
This preventive procedure decreases the risk to take erroneous values that would be caused by
weather variations or by other external causes that lead to a drift of the instrument. It is therefore
very important to often re-initialize in order to maintain the «0» base value used in the calculation of
the displayed values.
Please take note that values are more stable after 20 minutes and are completely stable after 50 to 60
minutes.
W RNINGS: Measure Stability and Battery Discharge
Instrumentation GDD Inc. 2018-01-16 3
Battery Discharge
*** It is recommended to put the rcher
2
field computer on charge when not in use to avoid
discharge of the battery.
*** For the probe, when the level of the batteries charge is low, the value of the readings could
be inaccurate and you could not be able to initialize the probe.
The specifications described in this Instructions Manual is valid at temperatures between 0°C and
70°C. At temperatures lower than 0°C, some specifications, like the batteries life, could be different.
Instrumentation GDD Inc. 2018-01-16 4
Thank you for choosin the MPP-EM2S+ Multi Parameter Probe developed by Instrumentation GDD
Inc. to help you optimize your prospectin efforts. This probe will help you to better determine the
nature, the exact position as well as the intensity of ma netic/conductive horizons alon your cores
and samples. The simplicity of the measurement process and the automatic recordin will allow you
to easily obtain conductivity and ma netic susceptibility profiles correspondin to the core.
Here are the key benefits of the new MPP-EM2S+ probe:
•It provides you the ability to measure at all time the ma netic susceptibility with or without the
presence of a conductor such as pyrrhotite.
•It has improved software to measure in continuous mode usin a time base with specific len ths
of your choice.
•It is equipped with new software to quickly create a profile from the measurements taken in
continuous mode.
Because the probe's response towards a conductor is similar to a conventional electroma netic (EM)
survey's response, it will provide you more si nificant information than an ohmmeter or a visual
interpretation would do. To ive an example, if the conductive zones of your core are evaluated by an
ohmmeter, the occurrence of chalcopyrite will induce a readin correspondin to a conductive zone.
In fact, chalcopyrite, even if it seems massive, will often not produce an anomaly detectable by an EM
survey. Alon the core, the MPP-EM2S+ probe will have a similar response as the EM response and
will only indicate the conductors detectable by this type of survey. The use of the MPP-EM2S+ probe
could, therefore, prevent you to be innin an EM survey campai n for a type of ore that would not
respond to this approach.
In the previous example, the phenomenon that explains the absence of conductivity is probably
related to the chalcopyrite ore distribution in the sample. If the chalcopyrite rains are not touchin
each other but are linked only by very thin filaments, the ohmmeter will detect the conductor
presence because of these tiny filaments connectin them. However, the rains, bein linked only by
those filaments, will not form a sufficient surface to be detected by the probe.
For an equivalent content of conductive material, the probe’s response will be hi her in function of
the conductor's surface. You could try the followin experience. Take an aluminium paper foil (a few
cm²), put the probe on the sheet and note the intensity of the anomaly. Roll the sheet in a small ball,
put the probe on the ball and take the readin a ain. You will see that the intensity of the anomaly is
hi her for a lar er contact surface even if the substance conductivity and quality are the same.
1. Introduction
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Pyrrhotite often occurs in thin but continuous veins. It causes multiple and very hi h EM anomalies.
Chalcopyrite is hardly detectable for two reasons.
1- It is 20 times less conductive than pyrrhotite.
2- It occurs, more often, in disseminated rains or clusters rather than in continuous beds, as the
pyrrhotite or raphite that extend in horizons of hundreds of meters.
Pyrite and galena are not conductive when they respond to an EM survey even within a sin le crystal.
However, we have observed some very conductive samples of silver-bearin alena (Kamouraska) and
pyrite rich in old. (Balmorals and Wri htbar mines).
Sphalerite, arsenopyrite and stibnite are never conductive and are not detectable with EM and IP
surveys.
Rich graphite beds can be more conductive than pyrrhotite. Occasionally they are not conductive at
all. Graphite can also show all intermediary conductivity values.
It is important to note that, with or without the presence of a conductor such as pyrrhotite, the
MPP-EM2S+ probe will measure the magnetic susceptibility value.
t all times, the MPP-EM2S+ provides an estimated EM conductivity value.
2. Mineral Conductivity – General Rules
Instrumentation GDD Inc. 2018-01-16 6
When receivin a GDD MPP probe, model MPP-EM2S+, ensure that its contains the followin
elements:
1. One (1) MPP-EM2S+ wireless probe
2. Four (4) rechar eable AA batteries with char er
3. One (1) MPP wall power supply with international plu kit (universal volta e)
4. One (1) standard serial communication cable
5. One (1) Archer
2
Field computer with one rechar eable 10600mAh Li-Ion battery, one hand
strap and one capacitive stylus
6. Two (2) Archer
2
micro USB sync cables
7. One (1) Archer
2
AC char er with international plu kit (universal volta e)
8. One (1) Screwdriver (for Archer2 battery cap)
9. One (1) MPP Instruction Manual
10. One (1) MPP utilities CD-ROM/USB stick (contains MPP software, sync softwares, MPP
manuals, Archer2 manual)
11. One (1) Archer
2
Quick Start Guide
3. Equipment List
1
2
3
4
5
6
7
8
9
10
11
Instrumentation GDD Inc. 2018-01-16 7
Not shown on the illustration:
1x Black carryin case
1x Set of international adapters for AA char er
1x Spare cap for MPP probe's batteries holder
Instrumentation GDD Inc. 2018-01-16 8
4.1 rcher
2
field computer batteries
It is stron ly recommended that you always keep a char ed battery within the Archer
2
field computer.
It is therefore su ested that you put the Archer
2
field computer on char e when not in use for up to
two weeks to avoid dischar e of the Li-ion batteries. Always use the battery and the char er provided
with the Archer
2
to avoid any dama e or overchar in . Char e the battery at room temperature for a
more efficient char in . The battery will not char e at cold or hot temperature.
A fully char ed battery will have a battery life of up to 20 hours. This can vary dependin on the use or
the temperature.
To check the remainin battery power on the Archer
2
, tap on the Title bar and select the battery icon
from the list of applications that drops down. The remainin battery power appears.
4. Batteries
Title bar
Instrumentation GDD Inc. 2018-01-16 9
4.2 Supplying power to the probe
With the MPP 1000 Series, it is possible to use three AA batteries or the wall power supply included
with the MPP set.
*** The use of another power supply than the one provided by GDD could damage the probe.
4.3 Battery level indicator
If the power of the probe is supplied by three AA batteries, it is important to verify that the level of
the batteries char e is sufficient.
Press and hold the BI button to turn on the li hts.
Lights signification
Lights on Status
Time remaining in
wireless mode**
Time remaining in cable
mode**
Red, yellow, green
The batteries are fully
char ed 7.5 hours 9 hours
Red, yellow
The batteries are partially
dischar ed 0-4 hours 0-4 hours
Red
The batteries are not
enou h char ed to
supply the probe
2-3 minutes 2-3 minutes
No lights on
The batteries are absent
or totally dischar ed 0 0
** This information is an approximation only. The time remained depends of the type of cells and the
operatin conditions.
3 cells
Wall external
power
supply***
+
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