REED ST-123 Bedienungsanleitung
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Model ST-123
Wood
Moisture
Meter
Instruction
Manual
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Table of Contents
Features...................................................................................................... 2
Specications............................................................................................. 2
Operating Instructions................................................................................ 3
Additional Functions................................................................................... 4
Battery Replacement.................................................................................. 4
Features
• Measures the moisture content of sawn timber (also cardboard and
paper) and hardened materials like plaster, concrete and mortar
• Average adjustment for European wood based on a wood temperature
of 20°C
• Impact-proof plastic housing • Auto power-off
• 8mm long integrated electrode is replaceable
Specifications
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
Optional Accessory: Replacement Pin (REED Model ST-123-P)
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Operating Instructions
Maintenance
• Always keep instrument dry
• Prevent dirt from getting in between the measuring electrodes
• How to change the electrodes: Unscrew the 5 screws at the back of
the instruments. Remove housing lid. Unscrew all 5 screws on the elec-
tronic plate. Replace the electrodes. Reinstall the housing lid and screw
the 5 screws back in place.
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%
When you encounter a Function error you will need to send the instrument
for servicing.
REED Instruments can service this instrument for you, for information e-
mail info@reedinstruments.com
Getting Started
• Remove the cap from the top side and place on the bottom side. The
instrument switches on automatically.
• Press the measuring electrodes as far as possible into the material.
• Always measure the moisture in the wood perpendicular to the bre
structure.
• Repeated measuring yields representative measured data.
• Once the measurement is nished, reattach the cap on the top side and
the instrument switches itself off.
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Additional Functions
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
Overow: reading > 44%/2.0%
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. Press the power switch of the meter to restore
the display the meter was previously 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 be full.
Battery Replacement
1. When the LCD display shows LO BAT “ ”, it indicates the battery
output is either empty or has dropped below the operating voltage
require. Replacement of the batteries is now needed.
2. Unscrew the 1 screw and open the Battery Cover at the back of meter
and remove the battery.
3. Replace with new batteries, check the polarization is correct, and
reinstall the cover.
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