TFA 30.5500 User guide

HUMIDCheck

Instruction Manual

Moisture meter for wood and building material

Used to measure the moisture level in sawn timber (also
cardboard, paper) and hardened materials (plaster, concrete
and mortar). It displays the moisture level in the material
straightaway.

Technical data

Measuring principle: Electrical resistance
Electrode length: 8 mm
Electrodes: Integrated, replaceable
Measuring range: Wood: 6 – 44 %
Material: 0.2 – 2.0 %
Display Wood: ±1 %
Accuracy: Material: ±0.05 %
Auto power OFF After approx. 15 minutes
Battery: 3 × Cr 2032, replaceable
Housing material: Impact-proof plastic housing
Ambient temperature: 0 - 40°C
Ambient Relative humidity: 0 – 85 %RH
Dimensions: 130×40×25 mm
Weight: 100g
Warranty: 1 year

Maintenance

l Always keep instrument dry.
l Prevent dirt from getting in between the measuring electrodes
l Changing the electrodes:

Unscrew the 5 screws at the back of the instruments.
Remove housing lid. Unscrew all 5 screws on the electronic
plate. Replace electrodes.
Close instrument again.

Function check

“O------T------O”
Connect electrodes with T contacts to the protective cap.
Reference display for wood: 27%±2%
Reference display for building material: 1.25%±0.1%

Function error: Send instrument for servicing.

Application

l Remove the cap from the top side and place on the bottom

side

The instrument switches on automatically.

l Press the measuring electrodes as far as possible into the

material.

l Always measure the moisture in the wood perpendicular to

the fibre structure.

l Repeated measuring yields representative measured data.
l Once the measurement is finished, reattach the cap on the

top side and the instrument switches itself off.

Display

The reading is shown in the form of bars:

a continuous line
= even values e.g. 6, 8, 14

dotted line

= uneven values e.g. 7,11

Overflow: reading • 44%/2.0%

Please note: Characteristics due to growth or type of wood and
deviating wood temperatures may make it necessary to correct
the displayed values. Measurements should be carried out
according to the drying and weighing/calcium carbide method in
the case of inspections or for reference purposes.

Automatic Power OFF

In order to conserve battery life, the meter will automatically turn
off after approximately 15 minutes. To press and restoration the
power switches the meter display is on.

Battery check

“ O…… B……O”
Connect electrodes with B contacts to the protective cap.
Reference display for wood: •44%
Reference display for building material: •2.05%
Display has to full.

Changing the battery

When the batteries become exhausted or drop below the
operating voltage, the battery warning “ “ symbol will
appear in the LCD display. The battery should be replaced.
Unscrew the 1 screws at the back of the instrument.
Remove the battery housing. Change battery. Observe

polarization! Reconnect instrument.