ETI 7000 User manual

7000 & 7250
Moisture Meters
model
7000 Moisture Meter
7250 Timber Moisture Meter
Operating Instructions
order code
224-070
224-075
545-071/22.04.14
manufactured by
Electronic Temperature Instruments Ltd
Worthing · West Sussex · BN14 8HQ
tel: [phone] · email: [e-mail]
www.etiltd.com
INSTRUMENT OPERATION
7000 Moisture Meter - Connect a probe
via the BNC socket located at the top of the
instrument and switch the instrument on.
7250 Moisture Meter - Remove the black
protective cap on the top of the instrument,
taking care of the moisture meter pins.
Press the pins on the moisture meter or
probe firmly to the surface to be measured.
A moisture reading will then be displayed on
the screen and the LED’s within the keypad
will illuminate to indicate the moisture
measurement. The LED displays three colours
green - OK, amber - WARNING and red -
DAMP.
MODE - The instrument incorporates five
different measurement scales. Press the
MODE button to cycle through the different
scales of measurement which are listed in
the table below.
Linear/Reference is a general scale of
moisture measurement used for all materials
and is listed to cover materials which are not
covered by the scales 1 - 4. This scale can
also be used to compare the material under
test to a known dry sample.
Readings above the fibre saturation point of
the material are only approximations. The
saturation point for different species of wood
is typically in the range of 25 to 30 %.
HOLD - Press the HOLD button to freeze the
display, 'HOLD' is displayed on the screen.
Press again to continue measuring.
AUTO-OFF - The instrument will switch off
automatically after 10 minutes. To disable the
auto-off function, press and hold the HOLD
button whilst switching on the unit - 'auto-off
disabled' will then scroll across the screen to
confirm this.
Please note: when the unit is turned off the
auto-off function will be re-enabled.
BATTERY REPLACEMENT - Replace the battery
when the battery icon is displayed. The meter
will continue to measure accurately but after
further usage the meter will display 'flat bat'
and 'shutdown'.
Unscrew the screw on the back of the
meter and replace with three AAA batteries,
ensuring the polarity is correct.
Scale Mode Display Icon Range Resolution
Led Display
Green Amber Red
1 Wood 1 W1 6.0 - 40.0 % 0.1 <14 % 14 - 20 % >20 %
2 Wood 2 W2 8.0 - 40.0 % 0.1 <14 % 14 - 20 % >20 %
3 Plaster P1 0.1 - 15.0 % 0.1 <1 % 1 - 3 % >3 %
4 Concrete C1 0.5 - 12.0 % 0.1 <2.5 % 2.5 - 4 % >4 %
5 Linear/Reference Lin 0 - 1000 1<375 375 - 575 >575
GUARANTEE - The Moisture Meter carries a
two year instrument warranty against defects
in either components or workmanship.
During this period, products that prove to
be defective will, at the discretion of ETI, be
either repaired or replaced without charge.
The product warranty does not cover damage
caused by fair wear and tear, abnormal
storage conditions, incorrect use, accidental
misuse, abuse, neglect, misapplication or
modification. Full details of liability are
available with ETI's Terms & Conditions of
Sale at www.etiltd.com/terms. In line with our
policy of continuous development, we reserve
the right to amend our product specification
without prior notice.

GUIDANCE NOTES - ETI moisture meters
measure the electrical resistance of a
material and provide an indication of the
moisture content of materials. A change
from low to high in the display and green
to red on the scale shows that further tests
are appropriate. Problems arise from the
'structure' of the material being tested, the
presence of other conductive material that
may affect the reading and also the correct
method of testing. Factors that may affect
readings include:
Density of the material - this is important
when interpreting the moisture content
that is acceptable in a particular material.
Even the same material will be variable
in composition from one example to
another.
Ability to absorb moisture - materials will
have different capabilities to hold moisture
in a satisfactory state.
Conductivity of substance - most materials
have an inherent conductivity even if this
may be negligible. Conductivity may
be affected by carbonaceous or ferrous
material content.
Purity of free water - the conductivity of
water varies with its purity.
Surface treatment - certain surface
treatments may be conductive. Residues
may contain carbonaceous material or
have a misleading high moisture content.
Wood treatments of a salts based liquid
will also affect conductivity.
Temperature - the electrical resistance at
any given moisture content increases as
the temperature decreases.
Timber grain - due to the cellular structure
of timber, readings taken in the end grain
will be less accurate.
Timber adhesive - composite materials
such as plywood will give artificially high
readings due to adhesive content.
Homogeneity - different densities in a
material, such as knots in wood will
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produce erroneous results.
Electrical contact - it is important to
maintain good contact between the
pins and the measured substance. Hard
surfaces may require 1.2 mm diameter
holes to be drilled.
Moisture gradient - the moisture content
of a material may vary across it's section
due to various factors.
As a general rule of good practice, results
should be obtained from different areas of
the material. If in any doubt then the (Oven
Dry) test method should be used. A linear
scale is provided for relative measurement,
therefore, facilitating the comparison of
unknown moisture measurements against
known standards obtained by the (Oven Dry)
test method, i.e.:
Wet Weight - Dry Weight x 100 = MC%
Wet Weight
Testing and calibration of ETI moisture meters
is carried out using electrical resistance as the
basis for measurement. Standard resistance
values are verified by empirical testing in
accordance with OIML R 92. moisture
meters - verification methods and equipment:
general provisions, issued by Organisation
Internationale De Métrologie Légale, - 1989.
In conclusion, it must be reiterated that
the meter reading is only a guide as to
the 'dampness' of the material under test.
Knowing the actual moisture content does not
indicate whether that material is 'dry' or 'wet'.
WARNING: Please ensure that there
are no electrical cables, water or gas
pipes below the surface of material
being tested.
!
Wood 1
Afara
Ash; European
Ash; Japanese
Balsa
Banga Wanga
Bosquiea
Boxwood; Maracaibo
Cyprus; E African
Dahoma
Fir; Grand
Gum; American Red
Gum; Spotted
Gurjun
Kapur
Karri
Kuroka
Maple; Pacific
Maple; Rock
Maple; Sugar
Myrtle; Tasmanian
Oak; American Red
Oak; American White
Oak; European
Oak; Japanese
Padang
Panga Panga
Pine; Lodgepole
Pine; Scots
Pine; Yellow
Popular; Black
Pterygota; African
Redwood; Baltic European
Rosewood; Indian
Sterculia; Brown
Tallowwood
Walnut; American
Wood 2
Ayan
Beech; European
Blackbutt
Camphorwood; E European
Cedar; Western Red
Chestnut
Danta
Greenheart
Hemlock; Western
Jarra
Jelutong
Larch; European
Larch; Japanese
Loliondo
Missanda
Niangon
Oak; Tasmanian
Pine; American Long Leaf
Pine; American Pitch
Pine; Caribbean Pitch
Pine; Corsican
Pine; Hoop
Pine; Nicaraguan Pitch
Pine; Ponderosa
Pine; Radiata
Pine; Sugar
Sapele
Seraya; Red
Silky Oak; African
Silky Oak; Australian
Spruce; Norway European
Spruce; Sitka
Stringybark; Messmate
Stringybark; Yellow
Turpentine
Walnut; European
Walnut; Queensland
Whitewood
Yew
For a more extensive list of timbers and average moisture %age correction, please contact the
ETI Sales Office.
Wood Reference Table

Thank you for reading this data sheet.
For pricing or for further information, please contact us at our UK Office, using the details
below.
UK Office
Keison Products,
P.O. Box 2124, Chelmsford, Essex, CM1 3UP, Engl nd.
Tel: [phone]
F x: [phone]
Em il: s [email protected].uk
Please note - Product designs and specifications are sub ect to change without notice. The user is responsible for determining the
suitability of this product.