Moisture Measurement Operation
7
7. When the pins are replaced in a pin probe, if the entire probe is replaced,
or to simply ensure the highest accuracy, please perform a PIN calibration.
See the Settings menu, Section 5.8 (Settings/Device Settings/Reset Op-
tions), for information.
NOTE
Pin Probe Moisture Measurement Considerations
The MR277 will display accurate external pin probe readings in the 7% to 30% range, de-
pending on the tested material. Moisture Content readings below 6% will display as 0% for
all materials and the maximum specified range is dependent on the fiber saturation point
for specific species. Above the fiber saturation point, the reading can only be used as a rel-
ative reference value.
For more information on fiber saturation please refer to public document ASTM D7438.
For additional information on Pin moisture measurement accuracy please refer to public
document ASTM D4444, section 6.
7.7 MR12 Ball Moisture Probe (Optional)
The MR12 allows you to take pinless moisture measurements with all the ben-
efits of a remote probe, i.e. easier access to surfaces and manoeuvrability.
1. Connect the MR12 to the RJ jack at the bottom of the meter.
2. Select the MR12 probe option in the menu (Moisture Mode/MR12); see
Figure 7–12 above.
3. Touch the MR12 probe to the surface under test.
4. View the moisture reading on the MR277 in either the Moisture-only dis-
play mode or the Thermal/Visible camera modes. Use the menus to select
the display modes (Image Modes).
5. Pinless measurement readings are ‘relative’ scaled (0~100).
7.8 Set Reference Mode
1. Select the ‘Set Reference’ mode from the menu (Moisture mode/Set
Reference
); see Figure 7–13 above. This mode is only available for
pinless measurements, including the optional MR12 Ball Moisture probe.
2. When the ‘Set Reference’ mode is selected, the displays are affected in
the following ways:
• Thermal/Visible Camera modes: A delta (triangle) symbol is shown after
the moisture reading indicating that the reading represents the current
measurement minus the reference value (the measurement recorded at
moment the ‘Set Reference’ mode was selected).
#NAS100005; r. AL/76939/76957; en-US
37
To Next Page
Loading...
