levenhuk Ermenrich NT50 Thickness Gauge User Manual

: June 9, 2024
: levenhuk

Table of Contents

Ermenrich NT50 Thickness Gauge
Getting started
Single measurement
Continuous measurement
History records
Acoustic alert
Screen rotation
Units of measurement
Calibration
Specifications
Care and maintenance
Battery safety instructions
Levenhuk International Lifetime Warranty
References
Read User Manual Online (PDF format)
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Ermenrich NT50
Thickness Gauge
User Manual

Ermenrich NT50 Thickness Gauge

SETTING/CALIBRATION button
MEMORY/ROTATION button
UNIT SWITCH/UP button
ZERO/DOWN button
Thickness value
History record
Low battery indicator
Battery compartment

Getting started

Open the battery compartment cover (8) and insert 2 AAA batteries according to the correct polarity. Close the cover.

Single measurement

Hold the device at least 5 cm from the surface of the sample. The device will beep and the measured value will be displayed on the screen.
Quickly put the device down away from the sample. The device is ready to take the next measurement.

Continuous measurement

Switch on the device as described above and press it against the sample. Press (1). The Scn icon will be displayed on the screen. Lightly press the device on the sample. The measured value will be updated on the screen.
After pressing the device on the sample, press (1) to exit the continuous measurement mode.

History records

Press (2) to save the measured value. When the memory is full, the FUL icon will appear on the screen.
Press (3)/(4) to see the history records. To delete a current record, press (1). To delete all of the records, press (1) and hold it for 3 seconds.
The device will beep 3 times and then go to the home screen.
Press (2) to exit the history records.

Acoustic alert

Press (1) to set the thickness limit. Adjust the value by pressing (3)/(4). Press (1) to save the limit value. When the measured value is beyond
the set limits, the icon UP or dn will be shown on the screen and the device will beep.
The setting order: upper limit -> lower limit.

Screen rotation

To rotate the screen 180°, press and hold (2) for 3 seconds.

Units of measurement

Press (3) and hold it for 3 seconds to switch between µm and mil.
Conversion ratio:
1mil = 25.4µm;
1µm = 0.03937mil.

Calibration

Zero point
• The device is preset with a zero point suitable for common metals. Calibrate the device manually for more accurate measurements of specific metals.
• Once you have measured the sample one time, the value will be displayed on the screen and the device will beep. Press (4) and hold it for 3 seconds to calibrate to zero. This measurement will be set as the default zero point. Repeat for more accurate calibration.
Reference points
By using standard calibration films in order of increasing thickness, you can make 6 additional calibrations. Each successive calibration film should be approximately twice as thick as the previous one.
• Press and hold (1) for 3 seconds to enter the calibration mode (fig. 1).
• Measure each sample in sequence. After each measurement, the device saves the value, beeps twice, and moves on to the next point.
• The thickness value of the respective point is displayed on the screen. If an obviously false value is displayed, use buttons (3)/(4) to correct it and take the measurement again. After measuring point 6, the calibration mode will be closed automatically.
• Setting order: 1 (0µm – zero point) -> 2 (50µm) -> 3 (100µm) -> 4 (250µm) -> 5 (500µm) -> 6 (1000µm).
• To calibrate one point out of the six, select it by pressing button (1).
• Press (1) to exit the calibration mode.
Note! Calibrate the device on one substrate only. When calibrating on non-ferrous materials, make sure there are no ferrous materials nearby.
Calibration mode
Thickness value of the corresponding calibration film
Setting order

Specifications

Units of measurement	µm, mil
Measuring range	0–1700µm (0–67mil)
Accuracy	±(2% + 2µm) / 2.5%
Min. measuring area	25x25mm
Min. curvature	Convexity: 5mm
Concave: 30mm	4 levels of brightness:

The manufacturer reserves the right to make changes to the product range and specifications without prior notice.

Care and maintenance

Use the device only as specified in the user manual. Keep away from children. Store the device in a dry cool place. Do not expose the device to shock, continuous vibrations, or extreme high or low temperatures. Do not try to disassemble the device on your own for any reason. For repairs and cleaning of any kind, please contact your local specialized service center. Protect the device from sudden impact and excessive mechanical force. Only use accessories and spare parts for this device that comply with the technical specifications. Never attempt to operate a damaged device or a device with damaged electrical parts! If a part of the device or battery is swallowed, seek medical attention immediately.

Battery safety instructions

Always purchase the correct size and grade of battery most suitable for the intended use. Always replace the whole set of batteries at one time; taking care not to mix old and new ones, or batteries of different types. Clean the battery contacts and also those of the device prior to battery installation. Make sure the batteries are installed correctly with regard to polarity (+ and –). Remove batteries from equipment that is not to be used for an extended period of time. Remove used batteries promptly. Never short-circuit batteries as this may lead to high temperatures, leakage, or explosion. Never heat batteries in order to revive them. Do not disassemble batteries. Remember to switch off devices after use. Keep batteries out of the reach of children, to avoid risk of ingestion, suffocation, or poisoning. Utilize used batteries as prescribed by your country’s laws.

Levenhuk International Lifetime Warranty

All Levenhuk telescopes, microscopes, binoculars, and other optical products, except for their accessories, carry a lifetime warranty against defects in materials and workmanship. A lifetime warranty is a guarantee on the lifetime of the product on the market. All Levenhuk accessories are warranted to be free of defects in materials and workmanship for six months from the purchase date. The warranty entitles you to the free repair or replacement of the Levenhuk product in any country where a Levenhuk office is located if all the warranty conditions are met.
For further details, please visit: www.levenhuk.com/warranty
If warranty problems arise, or if you need assistance in using your product, contact the local Levenhuk branch.

Levenhuk Inc. (USA): 928 E 124th Ave. Ste D, Tampa, FL 33612,
USA, +1-813-468-3001, contact_us@levenhuk.com
Levenhuk Optics s.r.o. (Europe): V Chotejně 700/7, 102 00 Prague 102,
Czech Republic, +420 737-004-919, sales-info@levenhuk.cz
Levenhuk®, Ermenrich® are registered trademarks of Levenhuk, Inc.
© 2006–2023 Levenhuk, Inc. All rights reserved.
www.levenhuk.com
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