Schaller FS_200-HT Manual de usuario

Wood chips moisture tester

FS_200-HT

Measuring instrument for a quick moisture test of wood

chips.

For measurements concerning charging we suggest the

more exact humimeter BM1 or BM2 moisture meter!

Version 1.2

2008

CHECK

•

LINE ®

Page 2 Schaller GmbH Version 1.2

Quality information

Congratulations on purchasing this product at Schaller

GmbH (Ltd.).

The function of your instrument has been examined and

calibrated before delivery.

First setting into operation

Your measuring device should be supplied with a battery

by the manufacturer. If this is not the case, open the

battery compartment and stick a 9 V block battery or a

charged accumulator onto the connecting contacts. Then

put the battery in the battery compartment. Make sure

that the power cable does not get caught in the lid.

Press the power switch (ON) at the front of the

instrument and the display will go on. If this is not the

case, check if the batteries are charged.

If you hold your measuring instrument in the air you will

see a certain value on the display depending on the

switch position (see item “Technical data”).

Measuring procedure

Exact measuring results can best be achieved by

adjusting the measuring instrument to the respective

product temperature. So you should store the device

near the object you wish to measure 15 Minutes before

measurement. A temperature difference of more than

5°C (9°F) results in a falsified measured value.

Adjust the switch by shifting it to the correct position

(refer to sort of wood chips). Turn on your measuring

device and put it on the product with suitable pressure

by holding the moisture meter in one hand.

The hole surface of the sensor must lay smooth on wood

chips, but chips does not lay onto the sensor plate.

Take care that you hold your measuring instrument with

a moderate but sufficient pressure on the product

Version 1.2 Schaller GmbH Page 3

because the compressed density influences the

measuring result. Make sure that you always exert the

same amount of pressure since the density of the

material increases when it is pressed tighter or softer; so

you could get different measuring results every time you

measure the material. You must not touch the sensor

plate or electronic box during the measurement.

The absolute moisture (depending on the wet weight)

can immediately be seen on the LC-Display.

The device turns off automatically after 90 seconds or

when the measuring range has been exceeded.

Switch

position

Bulk density

[kg/m³]

Sort of wood chips

Measuring

range

1100 - 150 softwood low density 40 %

2 150 - 200 softwood 37 %

3 200 - 250 2/3 soft- 1/3 hardwood 34 %

4 250 - 300 2/3 hard- 1/3 softwood 32 %

5 300 - 350 hardwood 30 %

6 350 - 400 hardwood high density 28 %

Page 4 Schaller GmbH Version 1.2

Measuring method

Even if the kiln drying method is the only measuring

procedure appropriate for verification according to

CEN/TS 14774-1 it is time consuming, in-situ application

can very seldom be carried out; the method also has the

disadvantage that the samples are destroyed. Schaller

GmbH (Ltd.) has developed FS_200-HT Wood chips

moisture meter – a measuring method which provides

exact measuring results within seconds. Yet it is not

possible to develop a measuring device that is ideal

under every single condition; even FS_200-HT has a

certain limited range to provide optimum results. In order

to minimize incorrect applications resulting from that fact

we have provided you

with a list:

IMPORTANT! Most common reasons for

measuring errors

•Product temperature NOT between +5 and +35 °C

You can not measure wood chips which are

contaminated with ice or snow. Before measuring

you must conditioning the chips at a temp. > +5 °C.

•Product temperature beyond ambient conditions

The temperature of the measuring device and of the

product should be nearly equal.

•Wrong switch position

•Uneven pressing

•Product pile not thick enough

If the pile of wood chips is to thin (500mm) you get

wrong measuring results.

•Electrically conductive material

All metallic objects influence the measuring result in

a negative way and must no be positioned within a

range of 500 mm below the sensor area.

Version 1.2 Schaller GmbH Page 5

•Exceeding of measuring range

This can occur depending on the type of product

and the position of the selector switch. It is indicated

on the display by blinking and means that the

measuring accuracy is less precise.

Measuring principle

The material in the measuring field is penetrated by an

electromagnetic field whose features change due to the

material's quantity of moisture. Because of the

characteristic polarity of the water molecule and the thus

resulting high relative permittivity of water (about 83) the

capacity of the measuring field changes together with

the changing moisture of the measuring sample.

Exclusion of liability

The producer can not be made liable for any measuring

errors and the damage that might result from it. This

measuring principle is a quick measuring procedure

which can be influenced by product and user-specific

margin conditions. Therefore it is recommended to carry

out a plausibility check of the measured values. In every

measuring device there is a serial number and a seal of

warranty. If this seal is broken no warranty claims will be

accepted. In case of defect please contact Messtechnik

Schaller or your dealer (refer to technical support).

Page 6 Schaller GmbH Version 1.2

Care regulations

In order to guarantee that your measuring device is kept

in good condition, please take care that it is not imposed

to too much mechanical strain (it should not be dropped

or exposed to excessive temperatures). Always use a

dry cloth when cleaning your measuring device because

it can be destroyed by incoming water or other cleaning

agents.

Do not leave your device unattended – put it back into

the delivered plastics case after the measuring

procedure.

We recommend an ISO-approved examination of the

device in regular intervals by applying the kiln drying

method. If needed, Messtechnik Schaller GmbH (Ltd.)

will also carry out a calibration at your expense. In this

case a calibration certificate will be issued and delivered.

Zero point adjustment

Ambient temperature must be 20 to 25 °C (68 to 77°F).

Shift the selector switch to 3, put off the lid of the battery

compartment, take out the battery (which must still be

stuck to the connecting contacts). Then put off the serial

number tag carefully. Now hold the device into the air

with one hand and adjust the inner potentiometer as long

as the following values appear on the display:

2 % (at switch position 3 ).

Put on the serial number tag again, insert the battery

and close the lid.

inner potentiometer

Version 1.2 Schaller GmbH Page 7

Technical data

measuring value material moisture (depending

on the wet weight)

measuring range up to 30 % (max. 40 %

depending on the material)

dissolution 1,0% material moisture

depth of measurement max. 200 mm

minimum of chips pile 300 mm

air-setpoint switch position 3: 2 % (+/-1%)

working temperature 5°C to 35°C (41°F to 95°F)

temperature compensation

automatically from 5 to 35°C

power supply 9V alkaline battery or

NiCd accumulator

drawing of current 5mA, sufficient for about

4000 measuring procedures,

when BAT appears on the

display, still about 200

measurements are possible

display three-digit LC-Display

dimensions 100 x 140 x 310 mm

weight (without battery) approx. 380 grams

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