new type of handheld high-precision digital ultrasonic thickness
gauge with A/B scanning TM290
Product Overview
1.Digital display mode 2.A scan mode (15M probe)
TM290 is a new type of handheld high-precision digital ultrasonic
thickness gauge with A/B scanning. It adopts the principle of
ultrasonic thickness measurement based on pulse reflection. It is
suitable for the measurement of material thickness that can make
ultrasonic wave propagate in it at a constant speed and get the
reflection from its back. The measurement resolution is 0.001mm and
the measurement range is as thin as 0.15mm (steel).
This product can accurately measure plates and processed parts. On
the other hand, it can monitor the thinning degree of pipes and
pressure vessels in production equipment after corrosion during
use. It can be used in petroleum, chemical industry, metallurgy,
shipbuilding, aerospace, energy and other fields.
This product complies with the following standards: Calibration
Specification for ultrasonic thickness gauge (JJF 1126-2004).
Main Function Characteristics
This product has A-scan mode, B-scan mode and numerical display
mode;
● The measurement range is wide, and the unique "multiple echo"
technology is adopted to realize the measurement of ultra-thin
parts, with a minimum measurement thickness of 0.15mm (steel);
● This product can measure the thickness with high precision, and
the maximum measurement resolution can reach 0.001mm; The
repetition resolution can reach ± 0.002mm;
● It has the functions of penetrating coating and echo to echo
measurement, which is used to measure materials with paint layer
and coating on the surface;
● Multiple measurement modes: mb-e, E-E and me-e modes meet the
measurement of conventional thick workpieces; Thin mode realizes
the measurement of thin parts;
● Numerical modes include: conventional thickness value mode,
difference / reduction rate mode and maximum value mode;
● Two gain modes: automatic gain / manual gain;
● Manual shutdown and automatic shutdown can be set, with
energy-saving function;
● It supports a variety of probes, including double crystal probe
and single crystal probe, and supports up to 20MHz high-frequency
probe;
● It supports mass storage and can store 100000 thickness values,
500 groups of A-scan waveforms and 500 groups of B-scan waveforms
at the same time;
● Large 3.5-inch color TFT-LCD display with 320x240 high definition
(QVGA) resolution;
● It has a variety of calibration methods, supports one-point
calibration, multi-point calibration and manual calibration modes,
and can calibrate sound velocity and probe zero position at the
same time; It supports v-path correction of double crystal probe.
● It supports the conversion of metric and British system; It can
switch between millimeter and inch units;
● It supports Chinese and English display;
Applicable Materials
It is suitable for measuring the thickness of metals (such as
steel, cast iron, aluminum, copper, etc.), plastics, ceramics,
glass, resin, glass fiber and other good ultrasonic conductors.
Basic Principles
The principle of ultrasonic thickness measurement is similar to
that of light wave measurement. The ultrasonic pulse emitted by the
probe reaches the measured object and propagates in the object.
When it reaches the material interface, it is reflected back to the
probe. The thickness of the measured material is determined by
accurately measuring the time of ultrasonic propagation in the
material.
Specification Parameters
* Note: the company reserves the right to make technical
modifications without prior notice.
| Item | TM290 |
| Probe type | Single crystal probe / double crystal probe |
| Measuring range (45# steel) | 0.15mm – 1800mm |
| Indication error(＜10mm) | ±0.005mm |
| Indication error(≥10mm) | ±0.1% |
| Repeatability error | ±0.001mm(Self test) |
| Indication stability | Zero crossing and multiple echo technology are adopted to ensure
that the thickness measurement value is not affected by echo
strength, material attenuation coefficient, gain and gate height,
and has high measurement stability and reliability. |
| Measurement frequency | 4Hz,8Hz,16Hz |
| Resolution | 0.1mm,0.01mm,0.001mm(0.01inch,0.001inch,0.0001inch) |
| Pulse generator | Negative square wave emission is adopted, and the pulse width and
voltage are automatically matched with the probe. |
| Sound velocity range | 400-19999m/s |
| Calibration block | 4mm(steel) |
| Automatic shutdown | One can choose 5 minutes, 10 minutes, 20 minutes and manual
shutdown. |
| Probe calibration | One point calibration, multi-point calibration |
| gain | Automatic gain control, Manual gain control |
| Gain range | 0~70dB |
| Detection mode | Radio frequency (RF), positive half wave (POS), negative half wave
(NEG), full wave (FULL) |
| Measurement mode | (1) MB-E: the measurement mode based on the transit time from the
initial echo to the first bottom echo; (2) E-E: penetration coating
measurement mode, the arbitrary Em–En echo is optional; (3) ME-E:
multiple echo measurement mode; (4) THIN: thin wall measurement
mode; |
| Numerical mode | Thickness value mode, difference / reduction rate mode, maximum /
minimum value mode |
| A-scan mode | Available |
| B-scan mode | Available |
| Coupling indication | Available |
| Battery Indication | Available |
| Language | Chinese / English |
| Unit | mm/inch |
| Menu operation | Available |
| Software function | Dynamic gate setting, blanking setting (Blank), echo blanking
setting (E-blank), echo freezing, echo translation and scaling |
| Storage function | It can store 100,000 thicknesses (100 groups, 1000 in each group),
500 groups of A-scan waveforms and 500 groups of B-scan waveforms
at the same time. |
| Host program upgrade | Available |
| Display | 3.5 "QVGA (320 × 240) color TFT-LCD screen |
| Data transmission | It supports RS-232 serial communication and transmits data to the
computer. |
| Working temperature | -10℃～＋50℃; With special requirements, it can reach - 20 ℃; |
| Working voltage | Four No. 5 AA batteries are required. When the power is
insufficient, there is a low voltage prompt. |
| Overall dimension | 204 x 100 x 36 (mm) |
| Total Weight | 310 g(Without battery) |
| |
Product Photos
TM290 optional Probes:
