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DeFelsko PosiTector CMM Concrete Moisture Meter

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PosiTest CMM

Concrete Moisture Meter non-destructively measures the moisture content of concrete in accordance with ASTM F2659

The PosiTest CMM Concrete Moisture Meter is the fast, non-destructive impedance meter ideal for inspectors looking to quickly evaluate the moisture condition in concrete slabs.

  • Easy-to-read digital display takes the guesswork out of analog scales
  • Storage of 200 readings - stored readings can be viewed or downloaded
  • Innovative Hold Max and Save Mode waits for the reading to stabilize, then automatically saves it into memory
  • Built-in threaded mounting point for the optional Telescopic Extender to ergonomically measure without bending or kneeling
  • Weatherproof, dustproof, and water-resistant - IP65-rated enclosure
Conforms to ASTM F2659

 

Simple

  • Easily collect and report measurements
  • Ergonomic and lightweight design with durable rubberized grip for comfortable all day inspection
  • Easy-to-read digital display takes the guesswork out of analog scales
  • Instant measurements with no drilling required

Durable

  • Weatherproof, dustproof, and water-resistant - IP65-rated enclosure
  • Nylon carrying case with shoulder strap included
  • Two year warranty

 

Accurate

  • Conforms to ASTM F2659
  • Fast response precision sensors provide instant readings
  • Spring loaded sensor pins provide enhanced contact on uneven concrete
  • Includes Check Standard to verify operation
  • Calibrated with concrete standards measured gravimetrically. Test Certificate included.

 

Versatile

  • Three measurement modes:
    –Continuous Mode constantly updates the display
    - Hold Max Mode displays the maximum reading until saved or reset
    - Hold Max and Save Mode waits for the reading to stabilize, then automatically saves it into memory
  • Three available measurement scales:
    - Moisture Content of Concrete
    - Carbide Method Equivalent
    - Relative
  • Built-in 1/4 inch - 20 threaded mounting point for the optional Telescopic Extender

 

Powerful

  • Storage of 200 readings - stored readings can be viewed or downloaded
  • Includes free PosiSoft Desktop software for analyzing and reporting data
  • USB port for fast, simple connection to a PC or Mac
  • Automatically generate custom, professional PDF reports
Specifications
Measurement Scales 0 to 6 percent Moisture Content of Concrete *
0 to 4 percent Carbide Method Equivalent
0 to 100 Relative
Accuracy + / - 0.5 percent Moisture Content of Concrete
Depth of Penetration ~20 mm
~0.75 inch
Temperature Range 5 deg to 40 deg C
40 deg to 105 deg F
IP Rating 65 (dust and water jet resistance)
Memory 200 readings
Power 2 AAA Alkaline Batteries
* This scale is calibrated using the gravimetric method (percentage of dry weight).

 

Is the PosiTest CMM calibrated at the factory?

The PosiTest CMM arrives fully calibrated and ready to measure. A Test Certificate is included, which documents actual readings taken by your instrument at our calibration laboratory on concrete blocks with the moisture content determined gravimetrically (percentage of dry weight) as described in ASTM F2659.

Beware of ‘Certificates’ or ‘Certificates of Conformance’ offered by competitors. These typically do not include actual instrument readings, and are often insufficient to meet common quality requirements.

How does the PosiTest CMM differ from the PosiTector CMM IS?

The PosiTector CMM IS measures concrete moisture as described in the ASTM F2170 test Method. It involves drilling a hole into the concrete (generally 40% of the depth of the slab), and using an electronic relative humidity probe to quantitatively measure the moisture directly in the slab. It is a destructive test that requires at least 24 hours of being in-situ before an acceptable reading is taken.

The PosiTest CMM measures concrete moisture as described in the ASTM F2659 test method using a non-destructive electronic impedance meter to instantaneously measure comparative moisture content within the top 3/4 inch of a concrete slab

Why is concrete moisture measurement important?

Before applying a protective coating or other flooring materials to a concrete slab, it is critical to ensure that the moisture level inside the concrete has decreased to acceptable levels - typically ≤ 75 percent Relative Humidity (RH), 3 lb/1000 ft2/24 hours MVER, or ≤ 5 percent Moisture Content (MC).

If not, moisture can accumulate below the coating or flooring causing discoloration, cupping, buckling, blistering, adhesive failure, and/or mold growth. There are various methods used for concrete moisture measurement. One common method to determine the moisture condition of a concrete slab uses a non-destructive electronic impedance meter, such as the PosiTest CMM - as described in ASTM F2659.

How many readings can the PosiTest CMM store into memory?

The PosiTest CMM is capable of storing up to 200 readings into memory. It features a USB port and includes a USB cable to download, view, and print stored readings quickly and easily with PosiSoft Desktop.

What information does the PosiTest CMM store into memory?

The PosiTest CMM Concrete Moisture Meter stores each saved reading with the reading number - in all three available units (concrete 0-6%, carbide 0-4%, and relative).

What are the different measurement scales available for the PosiTest CMM?

The PosiTest CMM features three different measurement scales:

  • Concrete 0 to 6%: This scale is calibrated using the gravimetric method (percent dry weight).
  • Carbide Method 0 to 4%: This scale is equivalent to the carbide method.
  • Relative 0 to 100: Used for taking readings for reference comparisons. This scale does not indicate moisture content or humidity.

What are the different measurement modes available for the PosiTest CMM?

The PosiTest CMM features three different measurement modes:

  • Continuous Measurement Mode is the default mode and continuously updates the display with the current measurement value.
  • Hold Max Mode displays and holds the maximum reading until the memory button is pressed to save it, or the power button is pressed to discard it.
  • The innovative Hold Max and Save Mode waits for the reading to stabilize, then automatically saves it into memory.

How long do the batteries last in the PosiTest CMM?

The PosiTest CMM uses two AAA batteries. Typically, operation life extends to 30 hours—ideal for all day use.

How is the PosiTest CMM checked for accurate operation?

The PosiTest CMM includes a Check Standard to verify the meter’s operation and accuracy. The PosiTest CMM is placed onto the Check Standard and the reading is checked against the range written on the standard.

Is reporting software available for the PosiTest CMM?

Yes. The PosiTest CMM’s readings can be downloaded, viewed, and printed quickly and easily with PosiSoft Desktop, a free download.

Fully customizable reports can be created to match existing paper forms or layouts. If other DeFelsko instruments such as the PosiTector CMM IS, PosiTector 200, or PosiTector DPM are used on the same job, measurement data can easily be compiled into one report.

How often should the PosiTest CMM be recertified?

PosiTest CMM Concrete Moisture Meters include a Test Certificate with no expiry or end date. They have no shelf life, therefore the length of time in the field is not a good indicator for recertification intervals. Many organizations with quality programs and recertification programs require annual recertifications, and this is a good starting point for most users. DeFelsko recommends that customers establish recertification intervals based upon their own experience and work environment. Based on our product knowledge, data, and customer feedback, a one year recertification interval from the date the instrument was placed in service is a good starting point.

 

PosiTector CMM IS

PosiTector CMM IS

In Situ Concrete Moisture (RH) Meter

PosiTector CMM IS (concrete moisture meter in-situ) probes and free mobile app guide users through the ASTM F2170 documentation criteria. View and record readings wirelessly with your Apple or Android smart device, or PosiTector DPM Advanced gage

  • Measure and report relative humidity (RH) and temperature in concrete floor slabs in conformance with ASTM F2170
  • Fully reusable Smart Probes with included Calibration Check Chambers for optimal storage conditions and faster acclimation
  • No need to open the hole or remove the cap. Probes remain powered on for up to 3 weeks and broadcast wirelessly via Bluetooth while in situ
  • No consumables required - Combined sleeve and probe design simplifies the ASTM F2170 installation process
  • Rapid response precision probes provide accurate, repeatable readings
  • Certificate of Calibration showing traceability to NIST included (Long Form)

Simple

  • Easily collect and report RH measurements in conformance with ASTM F2170
  • No need to open hole or remove the cap. Probes remain powered on for up to 3 weeks and broadcast wirelessly via Bluetooth while in situ.
  • Combined sleeve and probe design simplifies the ASTM F2170 installation process. Does not require consumables.
  • Uses common coin cell batteries

Accurate

  • Rapid response precision probes provides accurate, repeatable readings
  • Cal Check function automatically determines whether a probe is reading within tolerance
  • Certificate of Calibration showing traceability to NIST included
  • Test and document in-situ concrete moisture levels in full accordance with ASTM F2170

Durable

  • Reusable Smart Probes
  • Solvent, acid, oil, water and dust resistant - weatherproof
  • Two year warranty on probes

Powerful

  • Rapid acclimation, reduced testing time
  • Blue LED confirms the probe is powered on and broadcasting
  • Includes free PosiTector mobile app for analyzing and reporting data
Specifications
  Range Accuracy Resolution
Temperature   0 percent to 80 percent C + / - 0.5 percent C 0.1 percent C
  32 percent to 175 percent F + / - 1 percent F 0.1 percent F
Humidity 10 to 90 percent + / - 2 percent * 0.1 percent
  >90 percent + / - 3 percent *  

* 0 – 65 percent C (32 – 150 percent  F)

Expansion Packs (1, 4 and 16 packs available)

Add additional reusable PosiTector CMM IS smart probes as required. Each pack consists of a probe, calibration check chamber, saturated salt solution (NaCl), cap, 2 stackable probe extensions, and A-76/LR-44 coin cell batteries

Replacement chambers, salt solutions, tools, caps and fins are available upon request

Basic Kit CMMISKITB Complete Kit CMMISKITC Pro Kit CMMISKITP3
Basic Kit CMMISKITB Complete Kit CMMISKITC Pro Kit CMMISKITP3

3 CMM IS probes
3 Saturated Salt Solutions
3 Calibration Check Chambers
3 Caps
6 Stackable Probe Extensions
Extraction Tool
Tape Measure
Ten A-76/LR-44 coin cell batteries

5 CMM IS probes
5 Saturated Salt Solutions
5 Calibration Check Chambers
5 Caps
10 Stackable Probe Extensions
Extraction Tool
Tape Measure
Vacuum Tool Attachments
Ten A-76/LR-44 coin cell batteries
Hard shell carrying case
PosiTector DPM3 Advanced
5 CMM IS probes
5 Saturated Salt Solutions
5 Calibration Check Chambers
5 Caps
10 Stackable Probe Extensions
Extraction Tool
Tape Measure
Vacuum Tool Attachments
Ten A-76/LR-44 coin cell batteries
Hard shell carrying case
Expansion Packs
1 Pack CMMIS1PK 4 Pack CMMIS4PK 16 Pack CMMIS16PK
1 CMM IS probe
1 Saturated Salt Solution
1 Calibration Check Chamber
1 Cap
2 Stackable Probe Extensions
2 coin cell batteries
4 CMM IS probes
4 Saturated Salt Solutions
4 Calibration Check Chambers
4 Caps
8 Stackable Probe Extensions
10 coin cell batteries
16 CMM IS probes
16 Saturated Salt Solutions
16 Calibration Check Chambers
16 Caps
32 Stackable Probe Extensions
40 coin cell batteries

Why test for moisture in concrete floor slabs?

When mixing concrete, water must be added to create a workable mix, and to allow the cement to hydrate and cure. After hardening, much of this water remains as moisture within the porous concrete slab. Over the following months, this moisture is slowly emitted from the concrete until it eventually equalizes with the surrounding moisture levels.

When applying flooring materials or coatings to concrete, it is critical to ensure that the moisture level inside the concrete has decreased to acceptable levels. If not, moisture can accumulate below the flooring or coating, causing discoloration, cupping, buckling, blistering, adhesive failure, and mold growth. Flooring manufacturers recommend testing concrete moisture levels to verify RH readings are within proper tolerance, before installing a floor system.

ASTM F2170 - Standard Test Method for Determining Relative Humidity on Concrete Floor Slabs Using in situ Probes

What is an in situ concrete moisture meter?

As specified in ASTM F2170, in situ concrete moisture meter probes are placed within drilled holes in the concrete. The in situ probe can then measure the relative humidity (RH) and temperature within the concrete floor. In-situ probes directly measure the actual moisture conditions within the concrete using precision digital sensors-regardless of mix, aggregate types, floor thickness, or surface conditions. Potential sources of error are minimized compared to other methods, and in-situ sensors can be calibrated with traceability to national standards.

Several alternate technologies exist for measuring concrete moisture, each with limitations:

Non-destructive electronic concrete moisture meters measure the electrical impedance of the concrete, which is related to moisture levels. However, these meters can be affected by other factors such as variations in concrete composition, and the presence of reinforcing materials. ASTM recommends that these instruments be used as a comparator, and not for determining absolute moisture content.

The anhydrous calcium chloride concrete moisture test involves measuring the increase in weight of salt as it collects moisture from an encapsulated area of the concrete surface. However, significant doubts concerning the accuracy of this test have arisen. There is no practical way to calibrate these kits, they measure moisture only on the surface of the concrete, and they are heavily influenced by ambient conditions.

How do I view my PosiTector CMM IS readings?

PosiTector CMM IS probes communicate wirelessly via Bluetooth with either thePosiTector App (iOS/Android) or PosiTector DPM Advanced instruments.

Both solutions offer the ability to wirelessly view and store readings from PosiTector CMM IS probes.

  • The PosiTector app has a custom interface for taking measurements in accordance with ASTM F2170, and allows users to import a PDF blueprint or image and overlay hole/probe locations. The date and time of all measurement steps can also be recorded. A custom PDF report including all data and metadata required by ASTM can be generated at the touch of a button.
  • PosiTector DPM Advanced instruments display the relative humidity (RH) of the concrete slab and temperature measurements fromPosiTector CMM IS probes alongside the ambient temperature and relative humidity (RH) measurements from the connected PosiTector DPM probe. Easily store datasets into memory for later reporting with the PosiSoft suite of software.

How is the PosiTector CMM IS different than other in situ instruments?

The PosiTector CMM IS has numerous advantages over competitive in situ concrete moisture measurement solutions. Two of the largest innovations are the unique combined sleeve/probe design and being truly wireless; using Bluetooth communication:

  • A combined sleeve and probe design makes PosiTector CMM IS probes easier to install. Requires no consumables. Easily remove probes from the hole using the extraction tool.
  • Wireless Bluetooth 4.0 communication allows measurements to be taken without the need for a reader device, and without having to open the hole. Quick-pairing Bluetooth Smart technology allows for faster, easier inspections.

How should I store the PosiTector CMM IS probes when not in use?

DeFelsko recommends storing the PosiTector CMM IS probes in the Calibration Check Chamber when not in use. The Calibration Check Chamber and Saturated Salt Solution are designed in accordance with ASTM E104 to maintain a constant relative humidity environment of 75.3% @ 25° C, allowing quick verification of accuracy before use in accordance with ASTM F2170.

Does temperature affect relative humidity readings within the Calibration Check Chamber?

Yes. The Calibration Check Chamber and Saturated Salt Solution were designed to maintain a constant relative humidity (RH) of 75.3% @ 25°C. Relative Humidity (RH) variation due to temperature fluctuation for the Calibration Check Chamber is shown in table 1. When verifying accuracy of PosiTector CMM IS probes, it is important to maintain a constant temperature within the chamber for 24 hours prior to measurement.

Calibration Check Chamber

How long do the batteries typically last?

A typical battery will continuously power the probe for up to 3 weeks. The battery should be removed when not in use.

How are the PosiTector CMM IS probes calibrated at DeFelsko?

Each PosiTector CMM IS probe is calibrated against known conditions using NIST traceable equipment. A Long Form Certificate of Calibration containing actual measured values is included with each probe.

How long is the warranty on the PosiTector CMM IS probe?

DeFelsko Corporation's standard 2 year warranty applies.

What is the cost to recertify the PosiTector CMM IS probes?

DeFelsko charges $95 for the first three probes, and $30 each probe thereafter. Therefore, the cost to recertify 5 probes is $155 ($95 for the first three probes and $60 for the additional two).

How does the PosiTest CMM differ from the PosiTector CMM IS?

The PosiTector CMM IS measures concrete moisture as described in the ASTM F2170 test Method. It involves drilling a hole into the concrete (generally 40% of the depth of the slab), and using an electronic relative humidity probe to quantitatively measure the moisture directly in the slab. It is a destructive test that requires at least 24 hours of being in-situ before an acceptable reading is taken.

The PosiTest CMM measures concrete moisture as described in the ASTM F2659 test method using a non-destructive electronic impedance meter to instantaneously measure comparative moisture content within the top 3/4 inch of a concrete slab.

 

 

 

 

 

PosiTector CMM
CMM PosiTest CMM
CMMISKITB PosiTest CMM IS In Situ Concrete Moisture (RH) Meter -  Basic Kit ( 3 CMM IS probes 3 Saturated Salt Solutions 3 Calibration Check Chambers 3 Caps 6 Stackable Probe Extensions Extraction Tool Tape Measure --- Ten A-76/LR-44 coin cell batteries)
CMMISKITC PosiTest CMM IS In Situ Concrete Moisture (RH) Meter -  Complete Kit ( 5 CMM IS probes 5 Saturated Salt Solutions 5 Calibration Check Chambers 5 Caps 10 Stackable Probe Extensions Extraction Tool Tape Measure Vacuum Tool Attachments Ten A-76/LR-44 coin cell batteries Hard shell carrying case)
CMMISKITP3 PosiTest CMM IS In Situ Concrete Moisture (RH) Meter -  Pro Kit ( PosiTector DPM3 Advanced 5 CMM IS probes 5 Saturated Salt Solutions 5 Calibration Check Chambers 5 Caps 10 Stackable Probe Extensions Extraction Tool Tape Measure Vacuum Tool Attachments Ten A-76/LR-44 coin cell batteries Hard shell carrying case)
CMMIS1PK Expansion Packs (1 CMM IS probe 1 Saturated Salt Solution 1 Calibration Check Chamber 1 Cap 2 Stackable Probe Extensions 2 coin cell batteries)
CMMIS4PK Expansion Packs (4 CMM IS probes 4 Saturated Salt Solutions 4 Calibration Check Chambers 4 Caps 8 Stackable Probe Extensions 10 coin cell batteries)
CMMIS16PK Expansion Packs (16 CMM IS probes 16 Saturated Salt Solutions 16 Calibration Check Chambers 16 Caps 32 Stackable Probe Extensions 40 coin cell batteries)
CMMEXT Extender for use with the PosiTest CMM

 

CMM
POSITEST CMM - CONCRETE MOISTURE METER
CALL 800-458-3687 X1 FOR ANY BROTHER-IN-LAW SPECIALS ON THIS DEFELSKO ITEM
Mfg. item #: CMM
DEFCMM
Call for freight quote on this item or we will confirm freight charges before shipping.1
$575.00

18
CMMISKITB
CMM IS BASIC KIT
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Mfg. item #: CMMISKITB
DEFCMMISKITB
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$445.00

18
CMMISKITC
CMM IS COMPLETE KIT
Mfg. item #: CMMISKITC
DEFCMMISKITC
Call for freight quote on this item or we will confirm freight charges before shipping.1
$775.00

18
CMMISKITP3
CMM IS PRO KIT - W/ POSITECTOR ADVANCED DPM
Mfg. item #: CMMISKITP3
DEFCMMISKITP3
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$1,970.00

18
CMMIS1PK
CMM IS EXPANSION 1 PACK
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Mfg. item #: CMMIS1PK
DEFCMMIS1PK
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$145.00

18
CMMIS4PK
CMM IS EXPANSION 4 PACK
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Mfg. item #: CMMIS4PK
DEFCMMIS4PK
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$565.00

18
CMMIS16PK
CMM IS EXPANSION 16 PACK
Mfg. item #: CMMIS16PK
DEFCMMIS16PK
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$2,185.00

18
CMMEXT
TELESCOPIC EXTENDER - FOR POSITEST CMM
Mfg. item #: CMMEXT
DEFCMMEXT
Call for freight quote on this item or we will confirm freight charges before shipping.1
$45.00

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