เครื่องวัดความชื้นคอนกรีต PosiTest CMM IS
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.
Conforms to ASTM F2170.
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
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
Reusable Smart Probes
Solvent, acid, oil, water and dust resistant—weatherproof
Two year warranty on probes
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
ขั้นตอนการทดสอบความชื้นคอนกรีตด้วย Positector CMM IS ตามมาตรฐาน ASTM F2170
PosiTector CMM IS Concrete RH Measurement Process in Accordance with ASTM F2170
The PosiTector CMM IS greatly simplifies the process of performing a concrete moisture test in accordance with ASTM F2170.
Step 1: Determine the number of RH probes required.
ASTM F2170 requires 3 probes for the first 1,000 square feet (100 square meters) and another probe for each additional 1,000 square feet (100 square meters). One test must be performed within 3 feet (1 meter) of each exterior wall.
Use the PosiTector App to map and overlay probe locations by taking a photo of the test area floor plan with your smartphone. Ensure that the slab and the ambient conditions are at service conditions for a minimum of 48 hours before testing begins.
Photo of the PosiTector App being used to select RH test locations against blueprints. Caption—Use the PosiTector App to map and overlay test locations.
Use the PosiTector App to map and overlay test locations.
Step 2: Verify RH probe calibration.
PosiTector CMM IS RH probe with calibration check chamber
The reusable PosiTector CMM IS probes include a long-form certificate of calibration traceable to NIST. ASTM F2170 requires that each probe be calibrated within one year after initial use. ASTM F2170 also requires probe calibration to be verified within 30 days of use with a saturated salt solution.
To make verification easy, each PosiTector CMM IS probe arrives conveniently pre-packaged in a calibration chamber complete with a saturated salt solution. Simply turn on the probe and insert it back into the chamber, ensuring that the probe reading matches the label on the chamber. Refer to the Verification of Accuracy section of the instruction manual for further details.
Step 3: Drill the test holes in Accordance with ASTM F2170.
Photo collage depicts the process of drilling a probe hole in accordance with ASTM F2170.
Using a hammer drill and ¾” drill bit, drill to the required depth—40% of the slab thickness if it is drying from one side only (i.e. slab-on-grade) or 20% of the slab thickness if it is drying from two sides (i.e. suspended slab). Remove any debris from the hole and use the PosiTector App to note the time the hole was drilled.
Step 4: Insert the PosiTector CMM IS RH probe.
Place the PosiTector CMM IS probe in the hole (sensor end first) and gently push it to the bottom. Use the supplied yellow cap to seal the probe in the hole. Note the time the probe was inserted using the PosiTector App.
Photo shows the PosiTector CMM is in-situ with the companion PosiTector App
Step 5: Collect in-situ RH readings.
The probe begins measuring immediately and readings can be displayed at any time using the PosiTector App or PosiTector Advanced gage body. However, ASTM F2170 requires waiting 24 hours for conditions in the hole to equilibrate before measurements are recorded. After that time has elapsed, use the PosiTector App or PosiTector Advanced gage body to wirelessly record the in-situ temperature and humidity along with the time and date without opening the hole or removing the probe.
Image shows both the PosiTector App and PosiTector DPM Advanced colleting readings from the PosiTector CMM IS RH probes
Step 6: Withdraw the PosiTector CMM IS probe.
Use the supplied extraction tool to remove the reusable PosiTector CMM IS probe from the hole when RH testing is complete. Fill the hole with a suitable patching compound. ASTM F2170 also requires that the ambient temperature and humidity above the hole be measured. If using the PosiTector App, lay a CMM IS probe on its side next to the hole and record the ambient conditions. If using a PosiTector DPM Advanced gage, ambient conditions are automatically recorded alongside in-situ measurements.
Step 7: Report test results in Compliance with ASTM F2170.
With all probe data required by ASTM F2170 collected, the test is now complete. Use PosiSoft software to download stored readings from your PosiTector Advanced gage body, or press the “report” button in the PosiTector App to view a PDF inspection report. This report contains all information required by ASTM F2170 and can be e-mailed or saved.
Image shows the PosiTector App on a smart device as well as a sample ASTM F2170 compliant report
Photo of a concrete parking garage with protective coatings on the floor
The innovative, reusable PosiTector CMM IS Concrete Moisture Meter In Situ makes the process of concrete moisture measurement and reporting faster, simpler and more accurate. The certified, reusable probes are an ideal solution for measuring in situ concrete RH in accordance with ASTM F2170.