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9

General notes

This documentation contains information that must be

applied if the product is to be used safely and efficiently.

Please read this documentation through carefully and

familiarize yourself with the operation of the product before

putting it to use. Keep this document to hand so that you

can refer to it when necessary.

Identification

Representation Meaning Comments

Warning advice: Warning! Read warning advice carefully and take

the precautionary measures indicated!

Serious physical injury could occur if

you do not take the precautionary

measures indicated.

Warning advice: Caution! Read warning advice carefully and take

the precautionary measures indicated!

Slight physical injury or damage to

equipment could occur if you do not

take the precautionary measures

indicated.

Note Offers helpful tips and information.

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General notes

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1. Safety instructions

This chapter gives general rules which must be followed

and observed if the product is to be handled safely.

Avoiding personal injury/damage to equipment

iDo not use the measuring instrument and sensors to

measure on or near live parts.

iNever store the measuring instrument/probe together

with solvents and do not use any desiccants.

Product safety/preserving warranty claims

iOperate the product only within the parameters

specified in the Technical data.

iAlways use the product properly and for its intended

purpose. Do not use force.

iDo not expose handles and feed lines to temperatures in

excess of 70 °C unless they are expressly permitted for

higher temperatures. Temperatures given on

probes/sensors relate only to the measuring range of the

sensors.

iOpen the product only when this is expressly described

in the documentation for maintenance and repair

purposes.

Carry out only the maintenance and repair work that is

described in the documentation. Follow the prescribed

steps when doing so. For safety reasons, use only

original spare parts from testo.

Ensure correct disposal

iSend the product back to testo at the end of its useful

life. We will ensure that it is disposed of in an

environmentally friendly manner.

1. Safety instructions

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2. Intended purpose

Use the product only for those applications for which it was

designed. Ask testo if you are in any doubt.

The product was designed for the following

tasks/applications:

·Fast and non-destructive evaluation of material moisture

courses in woods and building materials.

Does not replace reference methods such as CM

method or Darr-Wäge (dry-and-weigh) method.

The probe is not calibratable.

· For connection to testo 635-1 (Art.-no. 0560 6351) and

testo 635-2 (Art.-no. 0560 6352).

The product must not be used in the following areas:

· Areas at risk of explosion.

Materials subject to electrical voltage.

Electric sshock!

If in doubt, check whether the materials are

energized before the measurement (e.g. in the

event of water damage in walls)

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2. Intended purpose

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3. Product description

3.1 Overview

Overview

Contact plates

Handle

Connection cable

3.2 Humidity measurement

procedure

The non-destructive stray field measurement uses the

ability of water molecules to dampen and thus change

electromagnetic fields. The electric field penetrates the

material via the contact plates and creates a measuring

field with a depth of approx. 5 cm.

The following factors can influence the measurement result:

Factors Ideal condition

Measurement depth Material thickness > 5 cm (> 2“). Caution: The upper

layers of the material influence the measurement result

more than the deeper layers.

Material surface As level as possible as contact plates should lay flat

against it.

Material properties As homogeneous as possible with no air pockets.

Moisture distribution As even as possible.

Metals and electric fields None, if possible.

3. Product description

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4. Measuring

²Taking aammeasurement:

The instrument is switched on and is in measurement

view.

The correct material was selected in the instrument,

see instruction manual for the measuring instrument.

Selectable materials:

Display Material

A.screed Anhydrite screed

C.screed Cement screed

Limestone Limestone

Concrete Concrete

I. brick High-insulating brick

Sol. brick Solid brick

Hwlumber Hardwood lumber

Swlumber Softwood lumber

Gas concr Gas concrete

Chipboard Chipboard

Service Testing characteristic. Not for on-site measurements!

iHold probe horizontal to contact surface. Slowly

increase contact pressure to 1 to 3 kg (2.2 to 4.4lb)

until a stable value is shown.

In order to be able to evaluate a moisture course, several

measurements at different positions or at different times

are necessary.

In drying processes, the displayed measurement values

can in individual cases also be negative. This occurs as

a result of the material composition and the different

moisture gradients. When negative measurement values

are displayed, the drying process is nearly finished, i.e.,

the more negative the values, the drier the material.

For better assessment of the contact pressure, the

probe can initially be pressed against a scale.

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4. Measuring

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5. Care and maintenance

±Cleaning tthe hhousing:

iClean the housing with a moist cloth (soap suds) if it

is dirty. Do not use aggressive cleaning agents or

solvents!

±Changing ccontact pplates:

The outer contact plates can be exchanged by the

customer

iIf necessary: Order exchange set via customer

service.

6. Technical data

Characteristic Values

Parameters Water content in weight percent of dry mass

Measuring ranges Woods: < 50 %

Building materials: < 20 %

Resolution 0.1 %

Probe Contact plate (integrated)

Measuring rate 0.5 s

Operating temperature +5 to +40°C (+41 to +104°F) / 10 to 80 %RH

Storage temperature -20 to +70 °C (-4 to +158 °F)

Protection class IP30

EC Directive 2004/108/EC

Warranty 2 years (excepting wearing parts)

5. Care and maintenance

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7. Tips and assistance

Typical values for equilibrium moisture (air dryness in

building materials 1 and woods).

Material Material moisture

Softwood lumber 9 ± 3 % by weight

Hardwood limber 9 ± 3 % by weight

Chipboard < 8 % by weight

Cement screed < 3 % by weight

Anhydrite screed < 0,5 % by weight

Concrete < 2,2 % by weight

Solid brick < 1 % by weight

High insulating brick < 2,5 % by weight

Limestone < 1,3 % by weight

Gas concrete < 5 % by weight

1In ambient conditions 20 °C and 65 %RH

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7. Tips and assistance

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