I. Application 1. Locate the position of steel bars in concrete structures and create bar drawings. 2. Estimate the diameter of steel bars and the thickness of the protective layer. 3. Measure the thickness of the protective layer under known diameter conditions. 4. Measure the thickness of the protective layer on a specific surface with grid indication. 5. Measure the thickness of the protective layer along a certain line, indicating steel bars at the section. 6. The probe is equipped with a self-correcting function. 7. Data can be saved and retrieved. 8. Data transfer is supported. II. Description Equipped with a scanning wheel for easy and efficient operation. III. Technical Specifications 1. Steel bar diameter range: 6mm – 50mm; protection layer thickness: **Table 1.1 Thickness Range (mm)**
Steel Bar Diameter First Nominal Range Second Nominal Range
Lower Limit Upper Limit Lower Limit Upper Limit
6 6 70 7 90
8 7 70 10 100
10 7 80 11 126
12 7 80 14 126
14 8 80 15 126
16 8 80 16 126
18 8 80 16 126
20 8 86 18 160
22 9 86 18 160
25 9 86 19 160
28 9 86 21 160
32 9 90 21 180
2. Maximum allowed indication error for protection layer thickness: **Table 1.2 Maximum Allowed Indication Error (mm)**
Max Allowed Error Nominal Range for Protection Layer Thickness
First Nominal Range Second Nominal Range
±1 6~59 7~79
±2 60~69 80~119
±4 70~90 120~180
3. Nominal diameter range: 6mm – 32mm 4. Maximum allowed error for steel bar diameter: ±1 mm **Table 1.3 Indication Error for Steel Bar Diameter (mm)**
Diameter 6 8 10 12 14 16 18 20 22 25 28 32
Max Error +2 / 0 ±2 ±2 ±2 ±2 ±2 ±2 ±2 +3 / -2 ±3 +4 / -3 0 / -4
5. Data storage capacity: 131,000 test records 6. Operating temperature: -10°C ~ +40°C, humidity: <90% RH, no strong alternating electromagnetic field 7. Battery: 6 pcs of AA alkaline batteries, operating time over 35 hours 8. Main unit dimensions: 220 x 150 x 90 mm, weight: 772g Small vehicle dimensions: 130 x 95 x 68 mm, weight: 160g IV. Company Products 1. Drying, weighing, and grading equipment and tools 2. Soil, rock, and aggregate testing equipment 3. Concrete, cement, and mortar testing equipment 4. Asphalt and steel testing equipment 5. Scientific and general lab equipment 6. Survey instruments and detectors V. Our Service 1. Production: Our factory uses high-quality materials including steel, stainless steel, circuit boards, motors, etc. Through strict and efficient production and inspection, we ensure high-quality products at competitive prices. 2. Shipment: We use 9mm and 15mm thick plywood for packaging. Heavy machines are packed in high-strength containers to ensure safe delivery. We ship goods as quickly as possible and arrange fast shipping to ensure timely delivery. 3. After-sales: After shipment, we will deliver shipping documents promptly. All machines come with a one-year warranty. Beyond that, we still provide quick and effective after-sales support. VI. Terms 1. Production time: 7 days for standard products, 15 days for special orders. 2. Payment terms: T/T, L/C, or other payment methods can be negotiated before shipment. 3. Shipment: Sea, air, or fast courier shipment based on customer preferences. 4. Inspection and calibration: Performed strictly before shipment by our technicians. 5. Installation: Most equipment is pre-installed and ready to use. For others, we guide step-by-step installation. 6. Training: Usually conducted at our factory. For special requirements, we can send technicians to your site. 7. Warranty: Standard one-year warranty on all machines.

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