GE Protimeter Timbermaster Manual de usuario

GE GE Protimeter

Sensing Timbermaster®

Introduction

The Protimeter Timbermaster is a

conductivity moisture meter designed

for use in wood. Moisture measure-

ments can be taken using the integral

pin electrodes, or using the meter in

combination with moisture probes or

hammer electrodes. When used with

the temperature probe, the moisture

measurements are automatically cor-

rected with respect to temperature.

This feature is particularly relevant

for users testing wood that is signifi-

cantly above or below 20°C (70°F).

The Timbermaster is switched ON by

pressing momentarily and

switched OFF by pressing and holding

for 2 seconds or more. The instru-

ment will switch OFF automatically

after 5 minutes unless the default set-

ting is changed (see section 3).

1 Using the Protimeter

Timbermaster without the

Temperature Probe

The Timbermaster is calibrated for

wood at 20°C (70°F). In general, tim-

ber that is hotter than 20°C will give

higher readings and timber colder

than 20°C will give lower readings.

An approximate manual correction of

0.5% moisture content per 5°C may

be subtracted from timber that is

above 20°C. For timber that is below

20°C, a manual correction of 0.5%

moisture content per 5°C may be

added to the measured value.

1.1 Readings with Integral

Electrode Pins

Remove the cap to expose the needle

electrodes and switch the instrument

ON by pressing . Select the appro-

priate wood calibration scale (A,

B,C,E,F,G, H or J) by referring to the

enclosed Protimeter wood calibration

tables and pressing . Push the pins

into the surface of the wood and

observe the reading.

1.2 Readings with Moisture Probe

or Hammer Electrode

Connect the moisture probe or

(optional) Hammer Electrode to the

3.5 mm socket on the right hand side

of the Timbermaster and switch ON

by pressing . Select the appropri-

ate wood calibration scale (A, B, C,

E, F, G, H or J) by referring to the

enclosed Protimeter wood calibration

tables and pressing . Drive the

moisture probe pins or hammer elec-

trode needles into the wood and

observe the reading.

2 Using the Protimeter

Timbermaster with the

Temperature Probe

If the timber being measured is signif-

icantly above or below 20°C (70°F)

then the Timbermaster should be used

in conjunction with the Temperature

Probe. When this probe is connected,

the Timbermaster automatically cor-

rects the measured moisture value

with respect to temperature.

2.1 Automatically Temperature

Corrected (ATC) Readings

Switch the Timbermaster ON and

select the appropriate wood calibra-

tion scale as detailed in sections 1.1

or 1.2. Using either a Hammer Elec-

trode, or a hammer and nail of nomi-

nal 2 mm diameter, make a hole in the

wood to be tested. Remove the Ham-

mer Electrode or nail and push the

Temperature Probe into the hole until

the tip is at the required depth. Con-

nect the Temperature Probe to the

Timbermaster via the 2.5 mm socket.

To obtain the automatically tempera-

ture corrected (ATC) moisture value,

take moisture readings as detailed in

sections 1.1or 1.2 while the Tempera-

ture Probe is positioned in the wood

and connected to the Timbermaster. If

the temperature of the wood is

assumed to be equal to the ambient

air temperature, ATC moisture values

can be obtained by holding the con-

nected temperature probe in air.

Switch between temperature and

moisture displays by pressing .

3SetupMode

The setup mode is entered by press-

ing and

 simultaneously. This

action displays the following infor-

mation about the instrument in the

following sequence:

1. Firmware version number, for

example 1.08.

2. Product part number, for example

bLd5601.

3. Firmware date in yy-mm-dd for-

mat, for example (00-05-28).

The user then has the option of chang-

ing the default setting for the tempera-

ture display (°C or °F) and the automatic

switch OFF time (disable automatic

switch OFF or set from 1 to 9 minutes)

by changing the codes as detailed in the

table below. The first code digit is

changed by pressing and the second

digit by pressing . Confirm the new

settings by pressing .

Code Description

0=0 No action

0=1 Resets all user settings to the

defaults (°C, 5 minutes)

1=0 Selects °C for temperature display

1=1 Selects °F for temperature display

2=0 Disables automatic switch OFF

2=1 Set automatic switch OFF to 1 min.

2=2 Set automatic switch OFF to 2 min.

2=.. ....and so on to ...

2=9 Set automatic switch OFF to 9 min.

4 Calibration Check

The calibration of the Timbermaster

is checked by holding the electrode

needles across the exposed wires of

the ‘calcheck’ device (supplied) or

across the terminals of the Protimeter

Checkbox (optional accessory).

When checking the calibration, the A

scale should be selected and the tem-

perature probe must be disconnected.

Correctly calibrated Timbermaster

will register a (%MC)value in the

range of 17.8 to 18.3.

5 Care and Maintenance

When the Timbermaster is not in use,

keep it in its pouch together with its

accessories. Store the kit in a stable,

dust-free environment out of direct

sunlight. Remove the batteries from

the instrument if it is to be stored for

periods of more than four weeks, or

when the low battery power symbol

appears on the display. Check the

condition of accessories used with the

Timbermaster instrument on a regular

basis and replace them if they become

worn or damaged.

The information contained in this leaflet

is given in good faith. As the method of

use of the instrument (and its accesso-

ries) and the interpretation of the read-

ings are beyond the control of the

manufacturers, they cannot accept

responsibility for any loss, consequen-

tial or otherwise, resulting from its use.

USA

1100 Technology Park Drive

Billerica, MA 01821-4111

www.gesensing.com/protimeterproducts

Ireland

Shannon Industrial Estate

Shannon, County Clare

www.gesensing.com/protimeterproducts

Protimeter Timbermaster®

is a registered trademark of GE

INS5601, Rev. A

January 2006

User Instructions

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