TG-3250 High Precision Thru Coating Ultrasonic Thickness Gauge
TG-3250 High Precision Thru Coating Ultrasonic Thickness Gauge
TG-3250 is a high precision digital ultrasonic thickness gauge. Based on the same operating principles as SONAR it is capable of measuring the thickness of various materials with accuracy as high as 0.001 millimeters, or 0.0001inches. It is adapted to measure the thickness of good conductor for ultrasonic, such as metal (steel, cast iron, aluminum, copper), plastic, ceramic, glass, glass fiber and so on.
Technical Parameters
| Measure Range | 0.75~400 mm (Steel) | Sound Velocity Range | 1 ~ 19999 m/s |
| Resolution | 0.001mm / 0.0001inches | Accuracy | 0.03mm or 0.3%*H |
| Measuring Period | 4 times per second | Probe Frequency | 2MHz,3MHz,5MHz,7.5MHz |
| Calibration Mode | Probe Calibration & Two Point Calibration | Calibration block | 4.000mm(Steel) |
| Measurement Mode | P-E, I-E, E-E | Gain Adjustable | 16 Stages |
| Measuring Mode | Single point, scan, min/max capture, differential, alarm | Data Storage | 1000 measurements, including thickness, sound velocity, time, etc. |
| Display | English / Chinese selectable, FSTN LCD Display with backlight |
Display Content | Thickness, Sound velocity, Stability, Battery, Measuring Mode, etc. |
| Communication | Bluetooth & Mini-USB interface, virtual serial port protocol | Optional portable Bluetooth thermal printers | |
| Power Supply | 3.7V Li-Ion chargeable battery | Power off | Timeout power off, low battery power off |
| Usage Temperature | -10 ~ 50 °C | Storage Temperature | -30 ~ 60 °C |
| Size | 157mm*78mm*37mm | Weight | About 260g |
| Shell Material | ABS & PC alloy | Box Material | ABS (IK08 / IP67) |
Features:
- High precision timing chip & V-Path model used for precision measurement
- Real-time Temperature Compensation Technic supporting One-time probe calibration for long term usage.
- Thru-paint measurement (Standard Version), simultaneously measure coatings and material thicknesses (Advanced Version)
- Bluetooth & Mini-USB interface for printing & communication, host software upgradable
- Can work with dual element probe and also single element probes.
- This instrument can be used for all kinds of plates and various machining parts for accurate measurement, suitable for measuring metal (such as steel, cast iron, aluminum, copper, etc.), plastic, ceramic, glass, fiberglass and any other ultrasonic thickness of the good conductor, can be widely used in petroleum, chemical, metallurgy, manufacturing, ship, aviation, aerospace and other fields.
Main Functions:
- Support Pulse-Echo(P-E), Echo-Echo (E-E), Interface-Echo (I-E) measurement modes
- 16 types gain optional, gain adjustable, 7 types of transmission frequency
- Scan mode, min/max capture mode, differential mode & alarm mode support
- Sound velocity calibration by known thickness
- Storage capacity of 1000 measurements with thickness, velocity, time, etc.
- Communicate with PC or smart phones, support online measurement & command control (OC version)
Probe Parameters
Probe technical indicators (the measurement range is related to the properties of the material to be
measured, coupling status and other influencing factors, and the measurement range of 45# steel is
shown in the table)
| Label | S15-P06 | S2M-P14 | G5M-P10 | G5M-P08 | G7M-P06 | G2M-P12 | H3M-P12 |
| Type | Single | Single | Dual | Dual | Dual | Dual | Dual |
| Measure Range | 0.15~28 mm | 30~2000 mm | 0.8~300 mm | 0.8~225 mm | 0.8~50 mm | 3.0~700 mm | 2.0~200 mm |
| Measure H<10 | 0.01mm | 0.03mm | 0.03mm | 0.03mm | 0.05mm | 0.05mm | |
| Error H≥10 | 0.3%H | 0.5%H | 0.3%H | 0.3%H | 0.3%H | 0.5%H | 0.5%H |
| Probe Outer diameter | 8mm | 19mm | 13mm | 11mm | 9mm | 17mm | 15mm |
| Probe Frequency | 15MHz | 2MHz | 5MHz | 5MHz | 7.5MHz | 2MHz | 3MHz |
| Contact Temperature | -10~60°C | -10~310°C | -10~60°C | -10~60°C | -10~60°C | -10~60°C | -10°~310°C |
| Using range | High precision measurement or measurement of ultra-thin work piece | No delay, measuring ultra-thick work piece | Measurement of conventional work piece | Micro-diameter probe for both curved surface and conventional measurement | Micro-diameter probe to measure curved surface and small work piece | Coarse diameter probe for measuring castings and thicker work pieces | High temperature probe to measure high temperature work piece |
Version Comparison
| Version | Measurement Mode | Thru-paint measurement | Measure Coatings |
| Basic | P-E | x | x |
| Standard | P-E, I-E, E-E | √ | x |
| Advanced | P-E, I-E, E-E, E-C, C-E | √ | √ |



Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.