M o i s t u r e M e t e r P r o d u c t s
Model 1103 Non-Destructive Moisture Indicator:
The Model 1103 Moisture Indicator is an easy to read "analog" style moving needle meter with printed scales for measuring moisture content in concrete materials. It is a 2.5% accuracy class, precision instrument, which is calibrated for measuring moisture content in concrete and other surface. It uses non-penetrating, non-invasive, surface contact based measurement. It has a large easy to read display and does not suffer from the reading interpretation issues of many digital moisture meters.
The meter has an on - off switch and a 'CAL' (Calibration) knob. The switch should be turned to the 'OFF' position whenever the instrument is not being used. The 'CAL' knob must be adjusted prior to use with the meter sitting on a calibrator plate until the dial reads 'full scale' (fully to the right hand side line Cal / 10).
Always do a battery check prior to using the meter
To do a Battery Check (Bat) adjust the 'CAL' knob with the meter on the Calibrator plate until the needle reaches the 'Bat' position (past 10) and the AAA battery will need to be replaced when the dial needle fails to reach the 'Bat' position.
The 1103 meter is calibrated to indicate the percentage of moisture content in concrete surfaces and is useful to determine whether the laying of floor tiles, sheet vinyl, carpet, timber or other flooring finishes should be commenced. The moisture test is usually carried out by calibrating the meter on the calibrating plate and then placing the meter on the (flat) surface to be tested and reading the indicated moisture content directly from the dial scale. Readings below 3 indicate a very dry floor, whereas readings above 7 indicate a higher than normal moisture content and indicate caution against laying. The Australian "normal" moisture content should read around 5.5 %. Also refer to the current standards.
Higher readings on new concrete surfaces may indicate that more time is required for drying / curing but on older concrete surfaces a high reading may indicate a failed or non-existent moisture barrier - consult the experts!
Readings should be taken in several places as individual readings may be affected by reinforcing steel or other non concrete foreign matter.
Meter Rules in General:
- Always check the battery condition before use .
- Calibrate before use.
- Use the instrument in a horizontal position (the meter, not you!)
- Take multiple readings over the floor surface.
- Switch to 'OFF' after use.
- Turn the 'Calibrate' knob counterclockwise before fitting a new battery.
- Have the meter checked for calibration regularly by your supplier.
Turn the 'CALIBRATE' knob fully anticlockwise before replacing the battery. Remove the bottom cover and carefully replace the battery with a long life Alkaline AAA (1.5V) battery. - Why not get your supplier to replace the battery and re-calibrate the meter at the same time for you!
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