APP Model Air Couplant Ultrasonic Thickness Gauge And EMAT Ultrasonic Thickness Gauge
1.1 Product Features
Electromagnetic ultrasonic thickness gauge is an ultra small, non-contact thickness measuring instrument without acoustic coupling agent. It can measure the thickness of metal or magnetic conductive materials.
1.2 Performance Index
(1) General characteristics:
A. The instrument is composed of a host and a mobile phone, which are connected wirelessly via Wifi
B. The instrument adopts the electromagnetic ultrasonic principle, and the inspection process does not require grinding the workpiece surface and coupling agent
C. The probe and the host are integrated, and the probe can be replaced
D. After connecting the tablet computer, there are two functions: A scan and B scan
E. Configurable probe types: probe (≤ 80 ℃, short-time measurement), high-temperature probe (≤ 800 ℃, short-time measurement)
F. High temperature handle can be configured:short handle (meeting the inspection requirement of up to 350 ℃ and short-term measurement),long handle (meeting the inspection requirements of up to 800 ℃ and short-term measurement)
(2)Detectable workpiece material: carbon steel, cast steel, alloy steel, stainless steel, copper, aluminum, titanium and other conductor materials
(3)Measurement range: 1.5-240.0mm,the maximum value of the measurement range is affected by the properties of the measured material, sound attenuation coefficient, surface conditions and other factors
(4)Error range of measuring equipment: When the thickness of workpiece is less than 10mm, the error is 0.05mm; when the thickness is more than 10mm, the error is + (0.01 + H / 200) mm (H is the thickness of workpiece)
(5) Receiving gain: ≤ 100dB
(6)Working temperature range of high temperature probe: low carbon steel (or other ferromagnetic steel): - 150 ℃~+800 ℃; Austenitic stainless steel (or other non ferromagnetic materials): - 150 ℃~+150 ℃
(7)Normal temperature probe: ≤ 80 ℃, 4MHz, mainly used to detect fine-grained materials, such as low carbon steel, aluminum, etc.,
(8) High temperature probe: ≤ 800 ℃, 4MHz, mainly used to measure ferromagnetic fine-grained materials, such as low carbon steel
(9) Maximum lifting distance: 4mm (the actual lifting distance is related to the material property and temperature). Anti rust film, salt deposit or any other insulating coating (paint, varnish, enamel, plastic, etc.) can be used as the operating gap
(10) The minimum diameter (curvature) of the workpiece: 9mm
(11) The maximum tilt angle of the probe: 25°
(12) Excitation mode of probe: permanent magnet
(13) Type of sound wave: shear wave
(14) High temperature compensation: it has the function of automatic compensation for high temperature sound velocity
(15)Sonic sound speed adjustment range: 1000-9999 m/s
(16)Waveform display: positive half wave, negative half wave, full wave, RF wave, envelope wave
(17)Power supply: built in lithium battery, working time not less than 5 hours
(18)The normal working temperature range of the host: -10~+50℃
(19)Host storage temperature range: 0~+40℃
(20)Host weight: 250g (with normal temperature probe)
(21)Dimensions of the host: length 176mm x width 42mm x thickness 32mm
2.1 Precautions for Probe Use
2.1.1 Precautions for Probe Operation
The electromagnetic ultrasonic probe contains a permanent magnet with a strong magnetic field. When it encounters ferromagnetic metal objects (such as iron, steel, nickel and other metals or alloys), it will generate strong attraction. Therefore, the following matters should be noted during operation:
1) All ferromagnetic objects (such as knives, screwdrivers, etc.) should be far away from the probe to avoid being attracted by the permanent magnet inside the probe, causing damage to the probe or injury to the operator
2) The strong magnetic field inside the probe may cause certain damage to precision chips, magnetic cards, watches, etc. Therefore, precision chips, magnetic cards, watches, etc. should avoid touching the electromagnetic ultrasonic probe to avoid damage caused by the magnetic field.
3) When moving the electromagnetic ultrasonic probe, please wear protective gloves and hold the probe firmly in your hand to avoid injury caused by sudden attraction with other ferromagnetic objects
4) Special care is required when placing the probe on a ferromagnetic workpiece to be tested. It is recommended to place the edge of the probe on the workpiece to be tested at a certain inclination angle, and then carefully place the probe. During the entire process, be sure to hold the host firmly in your hand. The operation process is as follows
5)Please do not move and rotate the probe on the workpiece during use, which will cause the metal at the bottom of the probe, the plastic at the bottom and the high temperature resistant fiber at the bottom to wear out, and the service life of the probe will decrease.
2.1.2 Precautions for Use of High-temperature Probe
1) When the measured workpiece is at high temperature, please use the handle to assist in measurement. When the temperature of the workpiece to be measured exceeds 300 ℃, it is not allowed to touch and measure for a long time. For workpieces within 500 ℃, it is recommended that the contact time be less than 10 seconds; For workpieces within 800 ℃, it is recommended that the contact time be less than 5 seconds
2) The magnet in the probe and the connecting wire in the probe will become invalid due to overheating of the high-temperature probe. Therefore, please keep the temperature of the probe case below 100 ℃. When high temperature workpieces need to be measured, please cool them quickly after measurement. Air cooling or other non corrosive cooling methods can be used
2.2 Precautions for Probe Replacement
2.2.1 Replacement of Normal Temperature Probe and High Temperature Probe
This part takes the replacement of the normal temperature probe into the high temperature probe as an example to explain the replacement method of the probe. The method to replace the high-temperature probe with the normal temperature probe is the same
1) Ensure that the instrument is in the shutdown state, and use the matching screwdriver to loosen the four screws above the probe (note: the screws contain special structures, if cannot be removed, do not use force to remove the screws)
2) Gently pull off the normal temperature probe and place it away from other probes
3) Connect the high-temperature connecting rod with the host through the fastening screws. Be careful to align the interface, and do not use strong force, otherwise the inner core of the interface may be damaged
4) Install the high temperature probe on the high temperature connecting rod, pay attention to aligning the interface, and do not use strong force, otherwise the inner core of the interface may be damaged
2.2.1 Replacement Between High-temperature Probes
1) Ensure that the instrument is in the shutdown state
2) Fasten the protruding part of the probe with two fingers, gently pull out the high-temperature probe, and place the probe away from other probes
3) Install the new high temperature probe on the high temperature connecting rod, pay attention to aligning the interface, and do not use strong force, otherwise the inner core of the interface may be damaged
Electromagnetic ultrasonic thickness gauge is powered by lithium battery. Under normal conditions, the continuous working time is more than 5 hours.
Each instrument is equipped with a battery charger. Both the host and tablet computer can view the host power. Please charge in time when the battery is low. When the host is charging, thickness detection cannot be performed.
Note: Do not use a non standard charger for charging. The instrument failure caused by the above reasons is not within the scope of the instrument warranty
Standard delivery
HUATEC TG-14L electromagnetic ultrasonic thickness gauge
Normal temperature probe
Instruction manual
Calibration certificate
Carrying case
Optional accessories
High temperature upto 800degrees
High frequency probe
High temperature low frequency probe
B scanning probe
