Exotek instruments MC-460 Bedienungsanleitung Seite 4

MOISTURE CONTENT METER
USER'S MANUAL
Foreword
With the new MC-460 a precision wood moisture measuring instrument,
Exotek Instruments has introduced a range of products incorpora ng elec-
tronic circuits perfected over years of development and prac cal applica-
on.This unit measures the resistance between the two electrodes The
resistance changes depending on the moisture content. To increase the
accuracy, especially at higher humid contents of the mber, the MC-460
polarizes to avoid the ioniza on of the water inside the wood.
Reliability, durability and a high standard of accuracy are assured by ultra-
modern, completely dependable digital and analogue integrated circuits
built to cope with the stresses of uncompromising everyday use. The clear
digital display shows readings accurate to within ± 0.5%. The risk of reading
errors, which can occur when analogue instruments are used is eliminated.
Electrodes
Take care to ensure that all measuring ps or needles are always inserted
across the grain to cover diff erent density (winter/summer).
1. Standard electrode (S-10)
The Standard-Electrode, S-10, is provided with exchangeable steel ps in
the length of 16/23/30/60 mm (measurement depth: 12/19/26/56 mm).
This corresponds to a wood thickness of max. 80 mm and a moisture
measurement up to the core-zone.
2. Hand electrode for paper (S-10P)
Plug the electrodes into paper stacks or bales of waste paper. Since the
ingredients are not usually known, choose the group 3 and the appropriate
temperature for the measurement.
2. Sliding-hammer electrode (S-30)
This sliding hammer electrode is a handy electrode for:
©
• Tefl on -coated electrode ps in the length of 45 mm and 60 mm for deep
measurements on wood (30 mm or ), or bare steel- ps in the length of 16,
23 and 30 mm for single measurements.
Use only pure acohol to clean Tefl on
3. Cup electrode (S-40)
1. Unlock the upper part of the electrode and pull up and away.
2. Fill the lower part or cup with the product to be measured up to
the level mark.
3. Introduce the locking bail of the upper part into the retaining pins
of the lower part and lock in
the fi rst notch.
4. Turn the handwheel of the upper part counterclock-wise to move the
press disc up as far as it will go.
5. Turn the handwheel of the upper part clockwise to compress the
material to be measured. The pressure required for a reliable
ENG
MC-460
© Insulated electrodes!
measurement is reached as soon as the slipping clutch is felt to
slip; the measurement can now be made. If the slipping clutch is
not felt to slip, turn the pressure screw all the way up again and
hook the locking bail into the second notch. If the clutch should
s ll fail to slip, the cup has not been fi lled with enough material.
Replenish and proceed once more as described above un l the
clutch is felt to slip.
6. The material measured must be fully removed from the cup
electrode a er each measurement; in case of a pulpy or pasty
substance, the cup electrode must be cleaned more thoroughly.
7. Measuring granulates of building materials, sand etc. It is only
possible to make compera ve measurements between material.
No absolute Moisture level can be determined. Use the WG3
se ng.
a) Measure material with know or acceptable moisture level.
No ce the moisture level.
b) If the measuring result is above the moisture level is over the
reference and vice versa.
8. When measuring Pellet, woodchips etc. select se ng using the
Material group table.
Switch the unit on/off
The wood group correc on bu on is at the same me the
ON/OFF-switch. Once shortly pressed this bu on and the
unit is on. If the unit is on and this bu on is kept pressed
for 3 seconds the unit is switched off . If there is no changing
of the measuring value, or no bu on will be pressed, a er 1 minute the
unit is switched off automa cally.
Display a er switching on
The unit show this start-up screen a er switching on:
A er 2 seconds the set values (by customer) and the real values (by the
unit) are indicated.
In this example the wood group (WG) indicates 3, the temperature
compensa on value (Temp.) is 20°C and the moisture content of the mber
(Humidity) shows 6.2%.
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