Moisture Measurement Operation
7
7.5 Pinless Moisture Measurements
• Select the pinless mode from the menu system (Moisture mode/Pinless);
see Figure 7–11 above).
• Place the internal moisture sensor (back) on the surface of the material to
be tested. Apply light pressure to ensure that the internal sensor is com-
pletely flat against the surface of the material under test.
• The internal moisture sensor detects moisture to a depth of approximately
19 mm (0.75”). The actual depth will vary depending upon the amount of
moisture, the material under test, surface roughness, and other factors.
• Pinless measurement readings are ‘relative’ scaled (0~100).
• The moisture reading is displayed on the main display in the upper left
hand corner (thermal and camera image modes) or as large digits (Mois-
ture-only mode). Refer to Section 5.4 Image Modes and Sections 7.2
through 7.4, for more information.
• Keep hands, surfaces, and objects away from the internal moisture sensor
on the back of the MR277 when taking measurements.
• For best results, lift the meter off the surface under test between measure-
ment points; do not drag the meter over surfaces.
7.6 Pin Probe Measurements
1. Select the Pin mode from the menu (Moisture mode/Pin Mode); see Fig-
ure 7–10 above.
2. Connect the supplied MR02 pin probe, or other external pin probe, to the
meter’s RJ jack at the bottom of the meter (under the protective flap). Re-
fer to https://www.flir.com for available moisture probes.
3. Select the appropriate Material Group in the menu system (Moisture
mode/Material) as described in Section 7.4 Moisture Measurement
modes. Also, See Section 15 Appendices for information on Material
Groups and the associated Group numbers to choose from in the menu.
4. Press the pins into the material under test.
5. Pin-based readings are represented in %MC (moisture content) for wood
and %WME (wood moisture equivalent) for materials other than wood.
6. The moisture reading is displayed on the main display (%) in the upper left
hand corner (Thermal and Digital Camera images) or as large digits (Mois-
ture-only mode). Use the menu to select the Image mode (Image mode
).
#NAS100005; r. AL/76939/76957; en-US
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