Tramex Dec Scanner - Learning

1. Infrared window
2. ON/OFF – base unit
3. Battery Compartment
4. Screw fastener for electrode mat

5. ON/OFF – control panel
6. Range button
7. LED range indicators
8. HOLD function / AUDIO signal
9. SET POINT calibration knob

1. Remove the base unit first, lifting with the two black grab handles situated on either side of the body.

2. Remove the handle and with the locking mechanism fully open on the handle, screw the threaded end into the base until the handle is tight and secure.

3. Extend the upper part of the handle up to the desired height making sure the arrow label on the mid part of the handle is pointing down to the centre of the base.

4. Then lock the flip-lock, so the upper half of the handle is secure.

5. Next remove the Control Panel Meter, and mount it to the mounting bracket attached to the upper half of the telescopic handle, by pushing down towards the base unit and making sure it is fully secured and in position.

6. The Dec Scanner can then be maneuvered to the desired position.

7. Always ensure that the electrode mat is completely secured, by making sure the eight grip screws are fully tightened.

Powering on the instrument

1. Now power the unit up by first turning on the base electronics with the on/off button positioned in front of the IR window. The red LED will light solidly to indicate a good battery connection.
2. Next power on the control panel with the on/off button, the red LED will also light up on whichever range was selected when the unit was last powered off. The default is set to Range one.
3. Then the red LED's will start to flash on both the base and the control panel to indicate a good connection between the two IR links. The unit is now ready to begin testing.

Range 1: Is most suitable for single ply and thin roof coverings with a maximum depth of signal of up to 30-50mm or 1-2 inches (this Range is the least sensitive)

Range 2: Is most suitable for 3 and 4 ply (BUR) modified systems and mineral surfaced felts with a maximum depth of signal up to 70-80mm or 1-3 inches (this is the middle Range of sensitivity)

Range 3: Is most suitable for thicker roof coverings and thicker layers of insulation, also for gravel and stone surfaced roofing with a maximum depth of 150.0-160.0mm or 1-6 inches (this Range is the most sensitive)

When the unit is powered up and both control panel and base panel are communicating, choose the appropriate Range (as above) with the instrument placed over a known dry area. Adjust the set-point knob, until the needle is just above zero, this will start the signal going into the material under test. If a dry area is not known, position the instrument over a location considered to be dry, adjust the set-point knob until the needle points to mid scale (50). Move the instrument around the roof, following in the direction of lower readings until an area with the lowest readings are found. This should indicate a relative dry area. With the Dec Scanner positioned over this area, adjust the set-point control knob until the needle is just above zero.