Protimeter Deep Wall Probes 127 mm
A pair of insulated deep wall probes on a lead, for taking moisture readings inside a structure with a pin-type Protimeter meter. Nominal reach 127 mm.
How deep wall probes are used
The integral pins on a meter read the surface. Deep wall probes read inside the structure — wall cavities, insulation, sub-floor voids and behind linings — through a small drilled hole rather than by opening the wall up.
The needles are insulated along their length and read only at the exposed tip, so the reading comes from the depth the tip has reached rather than from everything the probe passed through on the way in. That is what makes a profile possible: take a reading, push further, take another, and the moisture gradient through the structure becomes visible.
Probe lengths
| Length |
Part number |
Typical use |
| 127 mm (5 in) |
BLD5018 |
Cavity walls, insulation, standard stud construction |
| 360 mm (14 in) |
BLD5019 |
Deep sub-floor voids, thick masonry, insulated roof build-ups |
Protimeter also produces a 240 mm (9 in) version, BLD5020, which we do not list — contact us if you need one. The longer 360 mm pair is BLD5019. Note that Protimeter rounds the 127 mm probe to 130 mm (5 in) in its own documentation; it is the same part.
Working method
- Drill a small pilot hole to the depth you want to read.
- Insert the probes and take the reading once it settles.
- For a profile, withdraw and repeat at different depths rather than trusting one figure.
- Compare against a reading taken in known-dry construction of the same type nearby.
Compatible meters
- Protimeter MMS3 and MMS2
- Protimeter SurveyMaster
- Protimeter TimberMaster
- Protimeter Mini, Mini C and Digital Mini
It does not fit the HygroMaster range, which measures air rather than materials, or the Aquant and ReachMaster Pro, which are non-invasive and take no probes.
Related parts
Meters this fits
It does not fit the HygroMaster range, which measures air rather than materials, or the non-invasive Aquant and ReachMaster Pro, which take no probes at all.
Not sure which length or which probe suits the construction you are testing? Contact The Moisture Meter Company before ordering.
