Description
The TM8811 and TM8812 Ultrasonic Thickness Gauges are professional handheld instruments designed for fast, accurate and non-destructive measurement of material thickness. Using ultrasonic pulse technology, these instruments determine the thickness of a material by measuring the time taken for ultrasonic waves to travel through the test material and return to the probe.
These thickness gauges are ideal for inspecting materials where access is available from only one side, making them particularly valuable for corrosion monitoring, preventive maintenance and quality assurance applications.
Both models support measurement of a wide variety of materials including steel, cast iron, aluminium, brass, copper, zinc, quartz glass, polyethylene, PVC and other ultrasonic conductive materials.
The TM8812 offers improved measurement accuracy, a wider sound velocity range and optional computer connectivity via RS-232 or Bluetooth, making it suitable for users requiring greater flexibility or data management capabilities. The TM8811 provides a cost-effective solution for routine thickness measurements while maintaining dependable performance for everyday industrial inspections.
With automatic memory for material selection, coupling indication, high-sensitivity ultrasonic detection and a compact portable design, both models are well suited for engineers, inspectors, maintenance personnel and quality control professionals working in the field or workshop.
Typical Applications
- Corrosion monitoring of pipelines
- Pressure vessel inspection
- Boiler wall thickness measurement
- Oil storage tank inspection
- Shipbuilding and marine maintenance
- Structural steel inspection
- Metal fabrication quality control
- Machinery maintenance
- Manufacturing inspection
- Chemical processing equipment
- Power generation plants
- Preventive maintenance programmes
Why Buy From Us?
✔ 90 Days Local Warranty
✔ Calibration Certificate Included
✔ Ready Stock (subject to availability)
✔ Technical Product Support
✔ Suitable for Industrial & Engineering Applications
✔ Responsive Customer Service
✔ Trusted Supplier of Professional Measurement Instruments
What’s Included
- TM8811 or TM8812 Ultrasonic Thickness Gauge
- Standard 5MHz Ø8mm Ultrasonic Probe
- Coupling Agent
- Batteries
- Carrying Case
- Instruction Manual
- Calibration Certificate
Product Specifications
| Specification | TM8811 | TM8812 |
|---|---|---|
| Display | LCD | LCD |
| Sensor | Ultrasonic Probe | Ultrasonic Probe |
| Measuring Range | 1.5 – 200 mm (0.06 – 8 inch) | 1.2 – 200 mm (0.05 – 8 inch) |
| Resolution | 0.1 mm | 0.1 mm |
| Accuracy | ±(0.5%n + 0.2) | ±(0.5%n + 0.1) |
| Sound Velocity Range | 1000 – 9000 m/s | 500 – 9990 m/s |
| Lower Limit of Pipes | Determined by Transducer | Ø15 × 2.0 mm / Ø20 × 3.0 mm |
| Operating Temperature | 0 – 40°C | 0 – 40°C |
| Operating Humidity | <85% RH | <85% RH |
| Power Supply | 4 × 1.5V AA Battery | 4 × 1.5V AAA Battery |
| Dimensions | 160 × 68 × 32 mm | 120 × 62 × 30 mm |
| Weight (Without Batteries) | 208 g | 164 g |
| Standard Probe | 5 MHz Ø8 mm | 5 MHz Ø8 mm |
| Optional Accessories | — | RS232 Data Cable, Bluetooth Adapter with Software, Special Purpose Probes |
Frequently Asked Questions
- What materials can the TM8811 and TM8812 measure?
They can measure the thickness of many ultrasonic-conductive materials including steel, cast iron, aluminium, brass, copper, zinc, quartz glass, polyethylene and PVC. - What is an ultrasonic thickness gauge used for?
An ultrasonic thickness gauge measures the thickness of materials from one side without damaging the object. It is commonly used for corrosion monitoring, quality control and preventive maintenance. - What is the difference between TM8811 and TM8812?
The TM8812 offers higher accuracy, a wider sound velocity range, a slightly lower minimum measuring thickness and optional RS232/Bluetooth connectivity, while the TM8811 is a more economical model suitable for routine thickness measurement. - Is a calibration certificate included?
Yes. Every unit supplied by us includes a calibration certificate. - Does the product come with warranty?
Yes. The TM8811 and TM8812 are supplied with a 90-day warranty.
