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coating-thickness-meter-w-buzz-reminder-f-type-nf-type

GAOTek Coating Thickness Meter with Buzz Reminder (F Type, NF Type)

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Overview

GAOTek Coating Thickness Meter with Buzz Reminder (F Type, NF Type) is designed to measure the thickness of magnetic and non-magnetic materials using magnetic induction and eddy current measuring methods.  The F probe measures the thickness of non-magnetic materials on magnetic materials and the N probe measures the thickness of non-conductive coatings on non-magnetic metals. It is used on anodizing, varnish, paint, enamel, plastic coating, etc. It is also applied to aluminium, brass, non-magnetic stainless steel etc. It comes with two measurement modes, Single and Continuous mode and has a wide measuring range of 0 ~1250 μm / 0 ~ 50 mil and with high resolution of 0.1 μm (0 ~ 99.9 μm) 1 μm (over 100 μm). It comes with a 4 digits LCD display and uses 4 x 1.5 AAA batteries. It meets the standards of both ISO2178 and ISO 2361.

Key Features

  • Automatic substrate recognition.
  • Manual or automatic shutdown.
  • Two measurement mode: Single and Continuous
  • Wide measuring range and high resolution.
  • Digital backlit display gives exact reading with no guessing or errors.
  • Can communicate with PC computer for statistics and printing by the optional
  • Metric/Imperial conversion
  • The F probes measure the thickness of non-magnetic materials on magnetic materials.
  • The N probes measure the thickness of non-magnetic coatings on non-magnetic metals.
  • It meets the standards of ISO2178 and ISO 2361 as well as DIN, ASTM and BS.
  • It can be used both in the laboratory and in harsh field conditions.
  • Provide “Bluetooth data output” choice.

Technical Specifications

Operating Principle Magnetic Induction (F) / Eddy Current (F / NF)
Display 4 Digits LCD, backlit
Measuring Range 0 ~ 1250 μm / 0 ~ 50 mil
Resolution 0.1 μm (0 ~ 99.9 μm) / 1 μm  (over 100 μm)
Min Radius  Work-piece  F Type: convex 0.06 in (1.5 mm) / concave 0.98 in (25 mm) NF Type: convex 0.12 in (3 mm) / concave 1.97 in (50 mm)
Min Measuring Area 0.24 (6 mm)
Min Sample Thickness 0.01 in (0.3 mm)
Accuracy   ± 1 ~ 3 % n or ± 2.5 μm
Power Off Auto Power Off
Metric / Imperial Convertible
Operating Temperature 32 °F ~ 104 °F (0 ~ 40 °C)
Humidity 10 ~ 90 % RH
PC Interface With RS-232C interface
Power Supply 4 x 1.5 V AAA (UM-4) Battery
Dimensions 5.0 in x 2.6 in x 1.1 in (124 mm x 62 mm x 30 mm)
Weight 0.25 lbs. (115 g) (for in built probe)

0.44 lbs. (200 g) (for external probe)

Additional Information

Standard accessories:

  • F probe -1 pc.
  • N probe – 1 pc.
  • Calibration foils – 1set.
  • Substrate (Iron) – 1 pc. (If F type)
  • Substrate (Aluminum) – 1 pc (if N type)
  • Carrying case – 1 pc.
  • Operation manual – 1 pc.

Optional accessories:

  • USB, RS-232C cable & software.
  • Bluetooth data output & software

Front Panel Descriptions

3-1 Probes
3-2 Display
3-3 Zero Key
3-4 Plus Key
3-5 Minus Key
3-6 Power key (multi-functional)
3-7 um/mil conversion key (shortcut key)
3-8 Battery Compartment/Cover
3-9 Single/Continuous (shortcut key)
3-10 Jack forRS232C interface

MEASURING PROCEDURE

  1. Press the power key (3-6) to switch on the gauge and ‘0’ displays on the Display (3-2). The gauge will restore the state of last operation itself, with a symbol ‘Fe’ or ‘NFe’ indicating on the Display.
  2. Place the probe (3-1) onto a coating layer thickness of the coating layer. The reading can be corrected by pressing the plus key (3-4) or minus key (3-5) while the probe is away from the substrate or the measured body.
  3. To take the next measurement, just lift the probe (3-1) to more than 1 centimeter and then repeat the step 2.
  4. If suspecting the accuracy of measurement, you should calibrate the gauge before taking the measurements. For the calibration procedures, please refer to the calibration part 5.
  5. The gauge can be switched off by pressing the Power key (3-6). On the other side, the gauge will power itself off about 50 seconds after the last operation.
  6. To change the measurement unit ‘um’ or ‘mil’ by
  • Depressing the shortcut key (3-7) or
  • Depressing Power key and not releasing it till ‘UNIT’ on the Display and then pressing Zero key (3-3). It is about 7 seconds from starting depressing Power key.
  1. To change measurement mode from the single to continuous or vice visa, just depressing
  • The S / C (3-9) key or
  • Power key and not releasing it till ‘SC’ on the Display and then pressing Zero key (3-3).
  1. The symbol ‘ ‘ represents continuous mode and ‘S’ represents single mode. It is about 9 seconds from starting depressing Power key.

 CALIBRATION

  1. Zero adjustment Zero calibration for ‘Fe’ and ‘NFe’ should be carried out separately. Take the iron substrate if ‘Fe’ on the Display and take the aluminum substrate if ‘NFe’ on the Display. Place the probe (3-1) on the substrate steadily. Press the zero key (3-3) and ‘0’ will be on the Display before lifting the probe. If pressing the ZERO key but the probe is not placed on the substrate or an uncoated standard, the zero adjustment is invalid.
  2. Select an appropriate calibration foil according to your measurement range.
  3. Place the standard foil selected onto the substrate or the uncoated standard.
  4. Place the sensor (3-1) mildly onto the standard foil and lift. The reading on the display is the value measured. The displayed reading can be corrected by pressing the plus key (3-4) or minus key (3-5) while the probe is away from the substrate or the measured body.
  5. Repeat step 4 until the result is correct.

BATTERY REPLACEMENT

  1. When it is necessary to replace the battery, the battery symbol “” will appear on the Display.
  2. Slide the Battery Cover ( 3-8) away from the instrument and remove the batteries.
  3. Install the batteries (4 x 1.5v AAA / UM-4) correctly into the case.
  4. If the instrument is not to be used for any extended period, remove batteries.

 CONSIDERATIONS

  1. In order to weaken the influence of the measured material on the accuracy of measurement, it is recommended that the calibrations should be done on the uncoated material to be measured.
  2. Probes will eventually wear. Probe life will depend on the number of measurements taken and how abrasive the coating is. Replacement of a probe can be fitted by qualified persons only.

RESTORE FACTORY SETTINGS

  1. When to restore?
    It is recommended to restore factory settings in the one of following cases.
  • The gauge does not measure any more.
  • Measurement accuracy is degraded caused by environmental conditions changed greatly.
  • Replacement of a new probe.
  1. How to restore?
  • Restore factory settings includes ‘Fe’ setting and ‘NFe’ setting. You can restore one of them or both of them respectively. Please follow procedures below to restore factory settings.
  • Please note the symbol on the display is ‘Fe’ or ‘NFe’. If ‘Fe’ is on the display, the operation below is restoring the factory setting for ‘Fe’ type and if ‘NFe’ is on the display, the operation below is restoring the factory setting for ‘NFe’ type.
  • Depress Power key and not release it till ‘CAL’ appears on the Display. It is about 5 seconds from starting depressing Power key.
  • When F:H or nF:H is on Display, lift the probe to more than 5 centimeters. Then press the Zero key again and the gauge return to measurement state. The factory setting is restored. Remember, to restore factory setting should be done within 6 seconds at every stage or the gauge will quit itself and restoration is invalid.

Notes

  1. Settings include restoring factory setting, unit setting, S/C setting, which should be done within 6 seconds at every stage or the gauge will quit itself and keep its status before.
  2. It is strongly recommended that no changes should be made to the value of Ln (controlled by power key, it takes about 11 seconds from starting depressing Power key. Its value can be changed by plus/minus key after displaying Ln and releasing the power key. Store its value and quit by pressing Zero key) which will seriously affect the accuracy. Its value can be adjusted by professional persons only under the cases of replacing a new probe or making the gauge more accurate. Generally, larger the value of Ln smaller will be the reading on a same thickness. A little variation of value of Ln will cause a great change in reading at high end (e.g. at 500 um/20mil). The rules to adjust the value of Ln are as follow:
    1. Reading at low end can be adjusted to the exact value by the plus or minus key.
    2. To enlarge the Ln if readings at low end (e.g. at 51 um) is ok but reading at high end (e.g. at 432um) is too large. On the contrary, to decrease the Ln if reading at low end (e.g. at 51 um) is ok but reading at high end (e.g. at 432 um) is too small.
    3. Repeat procedures from A to B till the readings on the every standard foil are satisfying the accuracy.

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