Caliper Ultrasound (A - B Scan) - Accepts Extra Sensors
ISU-720D
- Two measurement methods: Echo-Echo (E-E) and Transmit-Echo (T-E)
- E-E: Measurement of substrate thickness without being affected by non-metallic coatings (e.g., paint, plastic).
- T-E: Measurement of material thickness without coating (e.g., metals, plastic, ceramics, ice).
- A-scan and B-scan functions for waveform analysis and continuous thickness imaging.
- Automatic recognition and zeroing of transducers.
- Memory up to 10,000 measurement values.
- Capability to export data to Excel and Word.
- Automatic or manual measurement.
- Measurement display remains on screen when the sensor is removed from the object.
- Alarm limit setting for measurements out of specifications.
- Automatic power off.
Specifications (On Steel):
- Resolution: 0.1/0.01mm
-
Accuracy:
- ±0.04mm (H<10mm)
- ±(0.04+H/100)mm (10≤H<100mm)
- ±H/33mm (H≥100mm)
(H = measured thickness in mm)
- Operating frequency: According to the sensor.
- Sound velocity: 1000–9999m/s
- Measurement rate: 2 or 10 measurements/second.
- Operating temperature: -20~50°C
- Display: LCD 320×240, with backlight.
- Data output: USB
- Measurement units: mm/inch
- Power Supply: 2× AA batteries
- Dimensions: 133×75×29mm
- Weight: 260g (with batteries)
Standard Packaging:
- Main Unit (1 pc.)
- ISU-T07 Converter (1 pc.)
- AA Batteries (2 pcs.)
- Coupling Gel (1 bottle)
- USB Cable (1 pc.)
Converters & Measurement Range (In Steel):
| Code | Measurement method | Frequency | Diameter (Ød) | Measuring Range | Minimum pipe size | Temperature | Application |
|---|---|---|---|---|---|---|---|
| ISU-T07 (Included) | T-E / E-E | 5.0MHz | 13.2mm | 1.5 |
Ø25×3mm | -20~60°C | General use |
| ISU-T04 (Optional) | T-E | 10.0MHz | 6mm | 0.7~20mm | Ø15×1mm | -20~60°C | Small pipes |
| ISU-T06 (Optional) | T-E | 7.5MHz | 9mm | 0.7~50mm | Ø15×1.2mm | -20~60°C | Thin pieces |
| ISU-T08 (Optional) | T-E | 5.0MHz | 11mm | 0.8~300mm | Ø25×1.2mm | -20~60°C | General use |
| ISU-T12 (Optional) | T-E | 2.0MHz | 17mm | 2~400mm | Ø40×3mm | -20~60°C | Cast iron |
| ISU-T13 (Optional) | T-E | 5.0MHz | 15mm | 3~100mm | Ø25×2mm | 0~350°C | High temperatures |
| ISU-T25 (Optional) | T-E | 1.0MHz | 26mm | 3~200mm | – | -20~60°C | Fiberglass and organic materials |
Optional Accessories:
- Transducers: ISU-T04, ISU-T06, ISU-T08, ISU-T12, ISU-T13, ISU-T25
- Coupling gel for ISU-T13: ISU-HT5-COUPLANT
The ultrasonic caliper ISU-720D is used for measuring the thickness of metallic and non-metallic materials, even in cases where there are coatings or paints. It features A-Scan and B-Scan imaging, allowing the detection of voids, cracks, or defects within the material. With automatic sensor recognition and storage of up to 10,000 measurements, it is suitable for industrial inspection, quality assurance, and equipment maintenance applications.

