PCE-TG 300 Material Thickness Gauge User Manual

June 4, 2024
PCE

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PCE-TG 300 Material Thickness Gauge User Manual

PCE-TG-300-Material-Thickness-Gauge-image

Safety notes

Please read this manual carefully and completely before you use the device for the first time. The device may only be used by qualified personnel and repaired by PCE Instruments personnel. Damage or injuries caused by non- observance of the manual are excluded from our liability and not covered by our warranty.

  •  The device must only be used as described in this instruction manual. If used otherwise, this can cause dangerous situations for the user and damage to the meter.
  •  The instrument may only be used if the environmental conditions (temperature, relative humidity, …) are within the ranges stated in the technical specifications. Do not expose the device to extreme temperatures, direct sunlight, extreme humidity or moisture, strong magnetic fields, corrosive media or dust.
  •  Do not expose the device to shocks or strong vibrations.
  •  The case should only be opened by qualified PCE Instruments personnel.
  •  Never use the instrument when your hands are wet.
  •  You must not make any technical changes to the device.
  •  The appliance should only be cleaned with a damp cloth. Use only pH-neutral cleaner, no abrasives or solvents.
  •  The device must only be used with accessories from PCE Instruments or equivalent.
  •  Before each use, inspect the case for visible damage. If any damage is visible, do not use the device.
  •  Do not use the instrument in explosive atmospheres.
  •  The measurement range as stated in the specifications must not be exceeded under any circumstances.
  •  Non-observance of the safety notes can cause damage to the device and injuries to the user.

We do not assume liability for printing errors or any other mistakes in this manual. We expressly point to our general guarantee terms which can be found in our general terms of business. If you have any questions please contact PCE Instruments. The contact details can be found at the end of this manual.

Specifications

Specification Description
Measurement range P-E: pulse-echo mode 0.65 ~ 600 mm (steel) E-E: echo-echo

mode 2.50 ~ 60 mm
Accuracy| ±0.04 mm (<10 mm); ±0.4 % H [mm] (>10 mm); H refers to the material thickness of the workpiece
Resolution| 0.1 mm / 0.01 mm / 0.001 mm (adjustable)
Measurable materials| Metals, plastics, ceramics, epoxy resin, glass and any material with a homogeneous structure
Operating modes| Pulse-echo mode (fault and cavity recognition)

echo-echo mode (hiding coating thicknesses, e. g. lacquers)

Calibration| Sound velocity calibration, zero point calibration, two-point calibration
View mode| Normal mode, scan mode, difference mode
Units| mm / inch
Data transfer| Printing via Bluetooth Data transfer via USB 2.0
Memory| Non-volatile memory with 100 data sets of 100 data records each
Operating time| Continuous operation 100 h Automatic Standby mode (adjustable)

Automatic Power Off mode (adjustable)

Power supply| 4 x AA battery (DC) 1.5 V
Display| 320 x 240 TFT LCD colour display with adjustable brightness
Operating temperature| 0 …+50 °C
Storage temperature| -20 …+70 °C
Relative humidity| ≤80 % RH, non-condensing
Dimensions| 185 mm x 97 mm x 40 mm
Weight| 375 g
Model| Frequency [Mhz]| Ø [mm]| Measurement range [mm]| Minimum pipe diameter [mm]| Notes
---|---|---|---|---|---
NO2| 2.5| 14| 3 ~ 300

(Steel) 3 ~ 40

(Cast steel HT200)

| –

(not suitable for curved materials)

| For damping / scattering materials (plastics, cast)
NO5| 5| 10| 1 ~ 600

(Steel)

| Ø 20 x 3| Normal measurement
NO5 / 90°| 5| 10| 1 ~ 600

(Steel)

| Ø 20 x 3| Normal measurement
NO7| 7| 6| 0.65 ~ 200 (Steel)| Ø 15 x 2| For thin-walled or strongly curved pipes
HT5| 5| 12| 1 ~ 600

(Steel)

| 30| For high temperatures (max. 300 °C)
P5EE| 5| 10| P-E: 2 ~ 600

E-E: 2.5 ~ 100

| Ø 20 x 3| Normal measurement and

E-E testing

Delivery contents

  • 1 x material thickness gauge PCE-TG 300 1 x probe P5EE (5 MHz)
  • 1 x 118 ml coupling gel
  • 1 x carrying case
  • 1 x user manual
  • 4 x AA batteries

Optional accessories

  • Probe NO2 (2.5 MHz)
  • Probe NO5 / 90° (5 MHz)
  • Probe NO5 (5 MHz)
  • Probe NO7 (7 MHz)
  • Probe HT5 (5 MHz)
  • High-temperature coupling gel
  • PC software with USB cable
  • Portable Bluetooth printer (incl. charger and user manual)

System description

PCE-TG-300-Material-Thickness-Gauge-User-Manual-
fig-1

  1.  TFT LCD color display
  2.  Bluetooth LED
  3.  Calibration disc
  4.  Membrane keypad
  5.  Probe plug (pluggable in various positions)
  6.  Battery compartment
  7.  Probe

Interfaces/probe

  1.  Receptor socket
  2.  Pulse generator socket
  3.  USB 2.0 interface

Display (main screen)

  1.  Mode: E-E (echo-echo mode) or P-E (pulse-echo mode)
  2.  Probe indication
  3.  Sound velocity
  4.  Battery level
  5.  Coupling status
  6.  Unit
  7.  Difference (in difference mode only)
  8.  Time
  9.  Main menu with general settings
  10.  USB and Bluetooth communication status
  11.  Probe setting
  12.  Print
  13. Name of the data record of the selected data set
  14. Nominal thickness of workpiece (in difference mode)
  15.  Measured material thickness

Function keys

Key

|

Description

| Functions
---|---|---
Measurement mode| Menu mode| Sound

velocity settings

| Probe selection
|

On/off

|

Off (2 s) Back

|

Off (2 s) Back

|

Off (2 s) Back

|

Off (2 s) Back

|

Enter

|

Main menu

|

Entry

|

Entry

|

Entry

|

Up

|

Calibration (One- or two- point)

|

Up / plus

|

Up / plus

|

Up / plus

|

Down

|

Calibration (One- or two- point)

|

Down / minus

|

Down / minus

|

Down / minus

|

Zero

|

Zero point calibration

|

|

Material selection

|

|

Selection F1/F2/F3

|

Respective icon on the display

|

Respective icon on the

display

|

Respective icon on the

display

|

Respective icon on the

display

|

Save

|

Save reading

|

|

|

Bluetooth communication status

Bluetooth mode LED status Bluetooth status
Master mode Fast flashing (150 ms) Search and connect
5 x fast flashing, off after 2 seconds Connect
Continuous glowing Connected
Slave mode Slow flashing (800 ms) Connect
Continuous glowing Connected

Getting started

To establish a power supply, four AA Alkaline batteries are needed. The battery compartment is located at the rear side of the meter and is affixed with two screws. Loosen the screws, remove the cover, insert the batteries as illustrated and close the battery cover again by tightening the screws. To start the meter, press until the display reacts. While the device loads the software, the language can be set by using the F1 key. After loading, the meter will display the main screen. automatically load these when it is switched on again. Even when the batteries are removed, all settings will remain saved.

System Configuration
The following settings can be found in the sub-menu „System Configuration“

Function Description
Bluetooth Off / Slave mode / Master mode
Key Sound On / off
Warn Sound On / off

LCD

Brightness

| Display brightness setting (0 … 100 %)
Display Standby| Delay time setting

(5 s / 15 s / 30 s / 1 min / 2 min / deactivate)

Auto Poweroff| Power off delay time setting

(2 min / 5 min / 10 min / deactivate)

Unit System| mm / inch
Date / Time Set| Date and time setting
Language| English / German / French / Spanish /Italian

Connect probe
Connect the desired probe to the receptor/pulse generator sockets, as described in chapter 3.2. It does not matter what plug is connected to what socket. For flawless operation, make sure that the plugs are properly engaged. To configure the meter, turn it on and select the probe with the F2  key. All available probes will confirm your selection by pressing the F2 key. The name of the probe should now be shown in the main display.

Operation

Settings
The settings described in chapter 5 can be found in the sub-menu „Test Settings“.

Work Mode:
The work mode must be set in advance for each measuring and calibration mode. You can choose either echo-echo mode (E-E) or pulse-echo mode (P-E). Echo-echo mode should be used if you want to measure coated workpieces as the coatings (varnishes/paints) will be ruled out to avoid material thickness errors. Pulse-echo mode is used for all other measurements, especially for the detection of faults and cavities and for calibration of the meter. The selected mode will be displayed on the main screen.

Calibration
Zero point calibration
Note: For a zero-point calibration, the meter must be in pulse-echo mode (P-E). A zero-point calibration is carried out by calibrating the meter to the correct zero point by using the internal calibration disc. A zero-point calibration is recommended whenever the device is restarted and when the probe is changed. Procedure:

  1. Connect the probe as shown in chapter 4.2.3.
  2.  Press to enable zero-point calibration.
  3.  Apply some coupling gel to the calibration disk.
  4.  Evenly press the probe onto the calibration disk until the progress bar is complete.
  5.  Remove the probe from the calibration disk.
  6.  Your meter is now successfully zero point calibrated.

Sound velocity calibration
Note: Before doing a one- or two-point calibration, the varnish or paint layers must be removed from the workpiece to be measured. In the following sub-chapters, you can find three possibilities to perform the calibration.

Calibration to a known sound velocity
For this calibration procedure, the user has to know the correct sound velocity of the measured workpiece. In chapter 6, you can find a chart of materials and their sound velocities.

Calibration to a certain material thickness (one point calibration)

For this calibration procedure, a workpiece of the material to be measured is needed. The exact material thickness of the workpiece must be known or must be measured with an external meter.
Procedure:

  1.  Make a zero-point calibration as described in chapter 5.2.1.
  2.  Apply some coupling gel to the workpiece.
  3.  Evenly press the probe onto the workpiece. (The coupling status and a material thickness value should now be displayed)
  4.  Remove the probe when a stable value has been reached.
  5. If the value changes Confirm your entry with F3 .
  6. The meter will display the main screen and show the calculated sound velocity in the upper part of the display.
  7. The meter is now ready to measure.

Calibration to a certain material thickness (two-point calibration)
For this calibration procedure, two workpieces of the material to be measured are needed. The exact material thickness of the workpieces must be known or must be measured with an external meter.
Procedure:

  1.  Make a zero-point calibration as described in chapter 5.2.1.
  2.  Apply some coupling gel to the workpiece.
  3.  Evenly press the probe onto the workpiece. (The coupling status and a material thickness value should now be displayed)
  4.  Remove the probe when a stable value has been reached. If the value changes while the probe is removed, repeat step 3.
  5. Confirm your entry with F3 main screen and show the calculated sound velocity in the upper part of the display. The meter is now ready to measure.

Measurement

  1.  Before starting a measurement, carry out a calibration (5.2).
  2.  set the work mode in line with the criteria described in chapter 5.1.
  3.  Apply some coupling gel to the workpiece.
  4.  Evenly press the probe onto the workpiece (the coupling status and material thickness value should now be displayed in white letters).
  5. If a correct measurement is not possible, double-check the coupling gel and evenly and firmly press the probe onto the workpiece. If the problem persists, try a different probe (different size/ frequency).
  6. If desired, you can save the measured value, as described in chapter 5.4.4.
  7. Four measurements per second are made. When the probe is removed, the last reading will remain displayed.

View Mode
You have three different options to view measured values: normal mode, scan mode, difference mode
Normal mode:
In normal mode, only the current material thickness value will be displayed.

Scan mode:
In scan mode, the material thickness value will be displayed as in normal mode. In addition, the minimum and maximum values will be displayed. The minimum and maximum values can be reset by means of the On/off key

Difference mode:
In this mode, the material thickness value is displayed along with the difference to the set nominal thickness T0. The nominal thickness T0 of the workpiece must be set in
advance. To do so, go to the main menu by pressing F3 and select “Test Settings” where you can find the “Nominal Thickness” setting. You can select the decimal place with F1

Limit value setting
In order to see whether the material thickness value is within the tolerance, a top limit and a bottom limit can be set. When the limits are exceeded/fallen below, the reading will be shown in red instead of green when the probe is removed. To “Bottom Limit“ and “Top Limit“. With F1 and F2  can select the decimal place and the limit can be set with . Confirm your entry with F3 .

Resolution
You can select one of these three resolutions: 0.1 mm / 0.01 mm / 0.001. If you select 0.001 mm, the surface of the workpiece should be very smooth. When the surface is coarse, a low resolution is recommended. To set the limit values, go to the main menu with F3 Setup and select “Test Settings“. Here, you can find the resolution setting. Select the desired resolution with F2 . Confirm your entry with F3

View
The saved data records can be viewed on the meter’s display.To view these records, go to the main menu with F3 and select “Memory Manager“. With the navigate to the data set and select it by pressing F3 data set, all data records are shown and can be deleted  or completely by pressing F2

Select data set
To select a data set, go to the main menu by pressing F3 Setup and select “Memory Manager“ where you can navigate to the desired data set with the keys and press F2 . In the menu that opens, select “Set“. The readings will now be saved to the data set. In the menu, you can also delete the sets or an individual set.

System Reset
Press F3 Setup to enter the main menu. Navigate to the function „System Reset“. Confirm the reset by pressing F3 or exit by pressing F1 .
Note: When you reset the meter, all settings, calibrations and readings will be deleted completely. Printing via Bluetooth (only possible with the optional Bluetooth printer) How to set up a Bluetooth connection with the printer

  1.  Turn on the portable Bluetooth printer.
  2.  Select Master mode as Bluetooth mode (4.2.2) for the meter.
  3.  You will be asked if you wish to search for Bluetooth printers nearby. Select “Yes” if you are setting up the printer for the first time. Otherwise, select „No“.

The meter will try to establish a Bluetooth connection with the printer. Wait for a few seconds. When the Bluetooth status LED glows continuously, this means that the meter is connected to the printer. Note: When the meter is switched off and back on, the Bluetooth function will be disabled automatically to save power.In the Memory Manager, the saved data sets can be printed by using the portable Bluetooth printer. Choose „Print“ to print the selected data set. You can also print all saved data sets via „Print All“. You can also print the current measured value directly via F1 after each measurement.

USB communication (only possible with optional software)
The meter can be connected to a PC via the USB 2.0 Mini connector for communication. To do so, first install the software and the driver for the meter. After this, connect the meter to the computer by using the USB cable. Now you can organize, format, print or copy the measuring data on your PC.

Sound velocity of common materials

Material Sound velocity (longitudinal)
inch / µs m / s
Aluminium 0.250
Simple steel 0.233
Stainless steel 0.226
Brass 0.173
Copper 0.186
Iron 0.233
Cast iron 0.173 … 0.229
Lead 0.094
Nylon 0.105
Silver 0.142
Gold 0.128
Zinc 0.164
Titanium 0.236
Tim 0.117
Epoxy resin 0.100
Ice 0.157
Nickel 0.222
Perspex 0.106
Polystyrene 0.092
Porcelain 0.230
PVC 0.094
Quartz glass 0.222
Vulcanised rubber 0.091 0.091
TeflonTM 0.056
Water 0.058

Warranty

You can read our warranty terms in our General Business Terms which you can find here: https://www.pce-instruments.com/english/terms.

Disposal

For the disposal of batteries in the EU, the 2006/66/EC directive of the European Parliament applies. Due to the contained pollutants, batteries must not be disposed of as household waste. They must be given to collection points designed for that purpose. In order to comply with the EU directive 2012/19/EU we take our devices back. We either re-use them or give them to a recycling company that disposes of the devices in line with the law. For countries outside the EU, batteries, and devices should be disposed of in accordance with your local waste regulations. If you have any questions, please contact PCE Instruments.

References

Read User Manual Online (PDF format)

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