Delmhorst TotalCheck 3 in 1 Moisture Meter & Thermohygrometer Restoration Package

The Delmhorst TotalCheck is a 3-in-1 moisture meter for building inspectors, flooring contractors and water damage technicians, combining pin mode, pinless scan mode and a thermo-hygrometer. It corrects for 69 individual wood species and stores up to 1,400 readings with a date and time stamp, grouped by job, for download to a PC.

Storage is what separates it from the QuickNav. When you have to hand over an inspection report or drying records, or back up an insurance claim, dated readings organised by job are the evidence.

What is in this package

• TotalCheck meter
• RH/T-S1 ambient humidity sensor
• 21-E deep wall electrode
• 26-ES slide hammer electrode with ten 496 insulated pins
• PC kit with application software
• Carrying case

The Restoration package carries both electrodes, so it covers wall cavities and timber flooring without a second purchase — the two things water damage technicians and inspectors test most.

This package comes with the RH/T-S1 ambient sensor, not the in-situ probe. It reads air temperature and humidity, which is what you need for drying records and psychrometrics.

It will not perform in-situ relative humidity testing inside a concrete slab to ASTM F-2170. That needs the RH/T-S3 in-situ sensor, sold separately and able to be added to this meter at any time. If slab testing is part of your work, allow for that when comparing this package with the Flooring package.

Specifications

Relative humidity and ASTM F-2170

The RH sensor in the TotalCheck, QuickNav and Navigator Pro conforms to ASTM F-2170, the in-situ relative humidity test for concrete slabs. Flooring manufacturers write their moisture requirements against that standard, and a surface reading will not satisfy it.

A pin or scan reading tells you about moisture at or near the surface. In-situ RH tells you what the slab will do once a floor covering traps the moisture in it. On a flooring job, that second question decides whether you lay today or wait.

Which RH sensor is in your package

Delmhorst build each TotalCheck package around a use case and fit the sensor to suit. One manual covers all of them, so the manual alone will not tell you which you have.

The S3 is the in-situ probe used inside a drilled hole in a concrete slab for ASTM F-2170 testing. The S1 reads ambient air temperature and humidity. Both are sold separately, so a package can be upgraded later.

Choosing between the Delmhorst multi-mode meters

Four meters cover this ground. They differ on three things: how many measurement modes they have, whether they store and export readings, and whether they measure relative humidity.

The honest short version. If you do not need to store and download readings, the QuickNav does the same measuring as the Navigator Pro for considerably less — Delmhorst say so themselves. If your work is insurance-backed, or you hand over inspection or drying records, storage stops being a luxury and the TotalCheck or Navigator Pro earns the difference.

All four take the same external electrodes, so a 21-E or 26-ES bought with one meter carries across to the next.

Replacement pins and correction tables

• 26-ES slide hammer: 496 insulated pin, 51 mm or A-111 uninsulated pin, 12 mm
• For every other Delmhorst pin and retainer, see the Delmhorst Contact Pins and Retainers Guide (PDF)
• Timber species: Australian Timber Species Correction Tables and the general Correction Tables

Frequently asked questions

What does 3-in-1 actually mean?

Pin mode for a moisture content figure at a known depth, scan mode for finding moisture without marking the surface, and a thermo-hygrometer for air temperature and relative humidity. Three instruments in one body, so you are not carrying three.

Do I need storage?

Only if you have to prove what you found. For building reports, insurance and warranty work, a dated set of readings organised by room is what supports your findings. On maintenance work where you act on the reading and move on, storage is something you are paying for and not using.

Can I add electrodes later?

Yes. Every current Delmhorst meter accepts every Delmhorst electrode. The 21-E reads inside wall cavities and the 26-ES drives into timber flooring with insulated pins.

Is scan mode a moisture content reading?

No. Scan mode gives a 0 to 300 relative reference, not a percentage. Use it to find where the moisture is, then pin the area for a figure you can defend.

Who supports the meter in Australia?

We do. The Moisture Meter Company (Aberford Holdings Pty Ltd) is the exclusive Australian distributor for Delmhorst non-agricultural moisture meters, and handles service, calibration questions and warranty claims here rather than sending them overseas.

Support and warranty

One year warranty on manufacturing defects (owner's manual). This does not exclude, restrict or modify your rights under the Australian Consumer Law. Our goods come with guarantees that cannot be excluded under the ACL. You are entitled to a replacement or refund for a major failure and compensation for any other reasonably foreseeable loss or damage.

What we see in the field

Restoration readings are only as good as the map that goes with them. Mark where you're testing, take a dry reference for each different material and keep the readings comparable from visit to visit. It's surprisingly easy to 'prove' something has dried simply by testing a different spot.

Documents

• TotalCheck owner’s manual v3.02, revised April 2025 (PDF)
• Delmhorst quick start guide (PDF)

Not sure which meter or electrode suits your work? Tell us what you are testing — timber floors, wall cavities, concrete slabs, cladding — and we will recommend what you need. See the full range in Delmhorst Moisture Meters.