: When the probe passes over a conductive material (such as a steel rebar), eddy currents are induced within the steel. These currents create a secondary magnetic field that opposes and distorts the primary field.
If the rebar diameter is known from structural blueprints, set the dial to the corresponding size (e.g., 16mm, #5 bar).
: Adjust the Zero Control Knob until the display reads zero (or the analog needle aligns perfectly with the baseline). Note: Perform this air-zeroing step periodically during long inspections to account for temperature drift. Step 2: Selecting Rebar Diameter
Understanding the hardware configuration is critical for accurate field deployment. A standard Profometer 4 kit includes the following core elements: Instrument Console
has long been recognized as a reliable, rugged, and accurate tool for assessing concrete structures . While newer models like the Profometer PM-8000 Go to product viewer dialog for this item. are available in 2026, the Profometer 4 Go to product viewer dialog for this item. proceq profometer 4 manual
Once the data is in PM-Link, the software allows you to create customized reports. You can choose between various data views (single line, multiple lines, area scan, statistics, etc.), and export the results in formats like CSV or HTML for use in third-party applications or for sharing with stakeholders.
Read the concrete cover depth directly from the corresponding scale on the analog display.
This mode is used for locating rebars and measuring their concrete cover and diameter. The manual provides procedures for:
Always remove the 6 AA batteries if the instrument will sit unused for longer than two weeks. Leaking alkaline batteries will corrode the main terminal board, voiding equipment serviceability. 7. Troubleshooting Common Issues Potential Root Cause Corrective Action Needle fluctuates wildly without moving the probe. Low battery voltage or damaged cable shielding. : When the probe passes over a conductive
Move away from power lines, generators, and cell phones. De-magnetize the probe if it was stored near heavy magnets. The rebar diameter dial is set incorrectly.
Today, the manual's principles live on in the Profometer PM600 series and the newer PM8000 . Where the Profometer 4 relied on a simple needle or basic digital readout, current models offer:
Switch the probe orientation. Scan parallel to one set of bars to map out individual transverse cross-bars.
The Profometer 4 is not just a data collection tool; it's also a data management and analysis station. Its large 7-inch color touchscreen and internal memory facilitate this process. : Adjust the Zero Control Knob until the
Before taking measurements, the device must be calibrated to the specific probe being used.
Move the probe slowly across the concrete surface. The signal strength will increase as you approach a bar.
The manual for this device wasn't just a set of instructions; it was a guide to . Here are the core chapters of that story:
Place the search head on the calibration test block to confirm the unit reads the block’s specified depth within the manual's allowable tolerance ( ±1plus or minus 1 Step 2: Locating Reinforcing Bars
Up to 120 mm (4.75 inches) depending on rebar size.