Linshang LS213 Handheld Ultrasonic Thickness Gauge User Manual

Linshang LS213 Handheld Ultrasonic Thickness Gauge User Manual

Product introduction

Ultrasonic thickness gauge adopts the principle of the reflected plus ultrasonic measurement, which is specialized in thickness measurement of materials that can transmit ultrasonic waves such as metals (e.g. steel, aluminum, copper, etc.), plastics, ceramics, glass, etc. The instrument employs a professional design of time-chip with a resolution of up to 0.01 mm. The product conforms to the standard: JJF 1126-2004 Calibration Specification for Ultrasonic Thickness Gauge.

Parameter

Characteristics

1. The instrument adopts a professional design of time-chip with a resolution of up to 0.001 mm and it has good stability and measurement accuracy.
2. With the function of gain automatic change, the instrument automatically selects the appropriate gain according to the material type and thickness so as to achieve the best measurement effect.
3. With QC judging function, it can judge whether the materials are qualified according to the upper and lower specification limits to realize the rapid detection of materials.
4. With statistical function, it can automatically count the maximum, minimum and average values of the latest 9 measured values.
5. The instrument can adjust sound velocity in 3 ways: setting sound velocity based on material/ thickness/ manually.

Operation

Turn on/off
Turn on: Short press on the button to boot, the version number and a serial number of the instrument will be displayed, and then enter the interface of benchmark adjustment.
Turn off: Long press on the button or click “turn off” in the menu bar to power off the instrument. The instrument will automatically shut off when the time of no operation is longer than the setting automatic shutdown time.

Reference calibration
After entering the interface of “Reference Calibration”, the user can perform the operation of reference calibration according to the animate calibration of hint, or skip the step. When the instrument has not been used for a long time, it is recommended to calibrate it.

If it prompts that the calibration fails, the possible reasons are as follows:

• The calibration block used is wrong. Please use the standard block in the lower right corner of the instrument to calibrate.
• The fluid coupling applied to the standard block is not enough. Please apply enough fluid coupling, press the probe tightly against the standard block and keep it still until the calibration is prompted.
• Instrument malfunction and it need to be repaired returning to the factory

Measurement
Apply coupling fluid on the surface of the material, press the probe of the instrument tightly and keep it still, then the user can get the thickness of the material. When the probe is well coupled with the material to be tested, the coupling mark on the right side of the screen will remain still and a buzzer will prompt.

The instrument has the following two measurement modes:

1. Statistical mode
   The interface of statistics mode is shown in the figure below (left). The instrument simultaneously displays the maximum, minimum and average values of the current statistical data, as well as the number of valid data. The number of statistics is the latest 9 valid measurements. When it is less than 9 data, the actual data volume shall prevail.

2. QC mode
   The interface of QC mode is shown in the figure below (right). The instrument judges whether the measured value is qualified according to the upper and lower specification limits.
   
   Note: The sound velocity of various materials is different. Please set different sound velocity according to different materials to avoid measurement errors

Setting and Calibration
A long press on the button for 3 seconds in the off state or a short press on the button in the measurement state enters the [main menu] of the instrument. There are five sub-options. The user can use the buttons to select the options of [system Setup/sound velocity set/Reference calibration/Exit/Shutdown]. Short press on the button to confirm your selection.

1. System Setup
   
   Language: Short press the button or to enter the language selection. These two buttons or are available to select language. A short press on the button completes the setting.
   Unit: Short press on the button to enter the unit selection. These two buttons or are available to select units. A short press on the button completes the setting.
   Auto Off: Short press on the button or  to enter the selection of shutdown time. These two buttons or are available to select shutdown time. A short press on the button completes the setting.
   Mode: Short press the button or to enter the mode selection. These two buttons or are available to select measuring modes. A short press on the button completes the setting.
   Limit Set: The limit setting is only displayed in QC mode. Short press the button  to enter the interface of limit settings. These two buttons and are available to select [upper limit/lower limit/return]. Short press on the button to enter the value adjustment, and short press the buttons  to adjust the value. A short press on the button confirms the selection.
   Factory Settings: Short press the button  to enter the interface of restoring factory selection. These two buttons and are available to switch [Yes/No]. A short press on the button confirms the option and returns the setting surface.

2. Sound velocity Set
   Short press the buttons to select [Set by material/Set by thickness/Manual input/Return]. A short press on the button confirms the selection.
   
   Set by material: The user can set the sound velocity according to the known material. Short press the button to enter the interface of material selection, and short press the buttons to select the corresponding materials. A short press on the button  confirms the selection. The setting is completed.
   
   Set by thickness: Knowing the thickness of the material, the user can measure the sound velocity through the thickness, and then use the back- measured sound velocity to measure the quality of the material and the thickness of the material with similar thickness. Short press the button  to enter the prompt interface “Please press the probe tightly against the material with known thickness”. Press the probe of the instrument tightly against the surface of the material with couplant and keep it still. The instrument will automatically jump to the interface of “Enter the actual thickness of the material” where the user can short press the buttons to adjust the value to be consistent with the thickness of the material. A short press on the button selects [Save]. The setting is completed.
   
   Manual input: Short press the button to enter the interface of setting the sound velocity manually and short press the buttons to adjust the value. The user can check whether the thickness displayed on the interface is consistent with the thickness of the currently measured material during the adjustment process. A short press on the button selects [Save]. The setting is completed.
   

3. Reference calibration
   The function of ” Reference Calibration” in the main menu is the same as that of “Benchmark Calibration” when the instrument is powered on.

4. Exit
   A short press on the button  exists the main menu and enters the measurement interface.

5. Shutdown
   A short press on the button  turns off the instrument.

Quickly set the sound velocity
In the measurement mode, when the measurement is completed, short press the button-  to enter the interface of the sound velocity manual setting, and adjust the current sound velocity according to the measured value. The detailed operation is the same as 4.4.2 Manual setting of the sound velocity

Check measurement records

In the measurement mode, short press the buttons to enter the browsing interface to view historical data. The instrument stores a total of 9 sets of data. When more than 9 sets of data are exceeded, the oldest recorded value is automatically deleted. Record 1 is the earliest test data, and it is pushed back in turn. Recorded data is not lost when the instrument powers off.

When press the button to check, the number of recorded data increases successively from the first one; when press the button to check, the number of recorded data decreases from the maximum to the bottom.

In the mode of historical browse or measurement, short press the button to display the prompt interface of data deletion, and select [Yes] with a short press on the button to delete all recorded data.

Aviation plug connection

It cannot be rotated or pulled violently because the aviation plug connector has a spring limit. Please refer to the following figure below for correct operation:

• Use finger to pinch and pull up the Aviation plug the plug will be pulled out
  

• Locked state
  

• Unlocked state
  

Precautions

1. The sound velocity is a key parameter for ultrasonic thickness measurement. Only by setting the correct sound velocity can an effective thickness value be obtained. It is recommended to use the material of known thickness and the same material as the object to be measured to set the sound velocity.
2. The probe should be kept in the center of the point to be measured, and the periphery of the probe should not be suspended outside the surface to be measured.
3. The other surface of the tested material must be parallel or coaxial with the tested surface.
4. For coarse-grained materials such as cast iron, a large amount of ultrasonic waves will be scattered. When the numerical value is abnormal, it means that this material is not suitable for this instrument to measure.
5. The probe is easy to be scratched on the rough surface. Try to reduce the sliding of the probe on the rough surface. If the probe is seriously worn, it should be replaced in time.
6. When the instrument has worked for a long time, it is recommended to perform reference calibration to avoid the influence of the external environment on the instrument.
7. When the instrument displays Low battery, it needs to be replaced with a new battery.
8. The probe and standard block should be cleaned to prevent them from being corroded after using.
9. The recommended calibration cycle is one year, and the company provides calibration services.

Packing List

Service

1. The gauge has one-year warranty. If the gauge works abnormally, please send the whole gauge to our company for maintenance.
2. Provide users with spare parts and lifelong maintenance services.
3. Provide the users with the gauge calibration service.
4. Free technical support for long term manufacturer:

Shenzhen Linshang Technology Co., Ltd.
Website: www.linshangtech.com
Service hotline: +86-755-86263411
Email: sales21@linshangtech.com

References

• Transmission Meter | UV Light Meter | Coating Thickness Gauge - Linshang

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