ERMENRICH FR20 Infrared Thermometer User Manual

: June 13, 2024
: ERMENRICH

Table of Contents

ERMENRICH FR20 Infrared Thermometer
FAQ
Overview
kit Includes
Getting Started
Usage
Settings
Distance
Specifications
Care And Maintenance
Battery Safety Instructions
Ermenrich Warranty
Appendix 1
Contact
References
Read User Manual Online (PDF format)
Download This Manual (PDF format)

ERMENRICH FR20 Infrared Thermometer

ERMENRICH-FR20-Infrared-Thermometer-product

FAQ

Q: How do I change the temperature units from Fahrenheit to Celsius?
- A: The temperature units can be changed by pressing the Mode button while using the thermometer.
Q: What is the optimal distance for accurate temperature measurement?
- A: For optimal results, maintain an appropriate distance from the measured object. Refer to the Distance section in the user manual for detailed guidelines.

Overview

ERMENRICH-FR20-Infrared-Thermometer-fig-1

Alarm indicator
LCD screen
Laser/Down button
Mode button
Backlight/Up button
Laser
Infrared sensor
Start/Measure button
Battery compartment cover

Please carefully read the safety instructions and the user manual before using this product. Keep away from children. Use the device only as specified in the user manual.

kit Includes

The kit includes: infrared thermometer, user manual, and warranty card.

Getting Started

Open the battery compartment cover and insert 2 AAA batteries. Close the cover.
Press the Start/Measure button to turn on the device.
The device switches off automatically after 30 seconds from the last action.

Display information

1	Data hold mode
2	Upper range limit icon
3	Lower range limit icon
4	Measurement process indicator
5	Laser operation indicator
6	Temperature value
7	Temperature unit (degrees Fahrenheit)
8	Temperature unit (degrees Celsius)
9	Maximum value mode
10	Low battery indicator
11	Emissivity value

Usage

Point the sensor of the device at the measured surface and press the Start/Measure button. The display will start showing the measurement process indicator [4], and the device will start measuring the temperature of the surface. To stop the measurement process, release the
Start/Measure button. The device will enter the data hold mode [1], and the display will start showing the last temperature recorded during the measurement process.
During measurement, keep an optimal distance to the measured object. The smaller the object, the closer the device should be held. For more information on the optimal distance, please refer to the “Distance” section.
The device has a built-in laser pointer that can be used for easier aiming. To switch the laser pointer on or off, use the Laser/Down button.
The laser operation indicator [5] appears on the screen when the laser pointer is turned on. The laser is only used for aiming and does not affect the measurement process in any way.
Use the Backlight/Up button to switch the display backlight on or off.
The surface temperature can be measured either in the range mode or in the maximum value mode. In the maximum value mode, the display shows the MAX icon [9]. To switch between the modes, use the Mode button.

Range mode:

When the temperature value exceeds the set range, the alarm indicator on the top side of the device will turn red. The display will show either the Low icon [3] or the Hi icon [2], depending on whether the temperature value is below or above the set range.
For more detailed information on how to set the temperature range for this mode, please refer to the “Settings” section.

Maximum value mode:

In this mode, the display will show the maximum registered value during ongoing measurement.

Settings

Press and hold the Mode button for two seconds to enter the Setup mode.
In this mode, you can change the lower and upper limits for the range mode, set the emissivity value, and select the temperature unit.

Upper range limit

In Setup mode, press the Mode button until the upper limit icon [2] lights up. The temperature value field [6] will show the currently set upper limit value. Use the Up and Down buttons to change the upper limit value.
Press the Mode button to move to the next setting or hold it for two seconds to exit the Setup mode.

Lower range limit

In Setup mode, press the Mode button until the lower limit icon [3] lights up. The temperature value field [6] will show the currently set lower limit value. Use the Up and Down buttons to change the lower limit value.
Press the Mode button to move to the next setting or hold it for two seconds to exit the Setup mode.

Emissivity

In Setup mode, press the Mode button until the emissivity icon [11] lights up. Use the Up and Down buttons to change the emissivity value.
To make sure that the device measures the temperature most accurately, please set the emissivity value according to the emissivity of the measured surface’s material (see Appendix 1).
Press the Mode button to move to the next setting or hold it for two seconds to exit the Setup mode.

Temperature unit

In Setup mode, press the mode button until the icon of the currently selected temperature unit (°C [8] or °F [7]) lights up.
Use the Up and Down buttons to switch between degrees Celsius and degrees Fahrenheit.
Press the Mode button to move to the next setting or hold it for two seconds to exit the Setup mode.

Distance

The device has a specific viewing angle:

ERMENRICH-FR20-Infrared-Thermometer-fig-3

Make sure that the device’s field of view covers the measured surface completely and that it doesn’t cover any other object. The larger the object, the greater the distance to it; the smaller the object, the smaller the distance. The optimal distance/object size ratio (D:S) is 12:1, unit of measurement is mm (please refer to the scheme below).

ERMENRICH-FR20-Infrared-Thermometer-fig-4

Emissivity

The emissivity (ε) of the surface of a material is its effectiveness in emitting energy as thermal radiation.
The higher the emissivity, the more radiation the material emits. The emissivity of most organic materials and metals falls in the range of 0.85–0.95. The default emissivity setting of the device is 0.95.
For more accurate measurement results, it is recommended to adjust the emissivity according to the table of the emissivities of different materials (see Appendix 1).

Specifications

IRT temperature, range	–50… +600°C (–58… 1112°F)
Accuracy	–50… 0°C (–58… 32°F): ±3°C

0… +600°C (32… 1112°F): ±2.0%

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

Care And Maintenance

This is a class II laser device. Never look at laser beams without eye protection and do not point the laser beam at other people. Do not use the device if it is damaged or does not operate properly. The actual temperature of highly reflective materials may be higher than the measured temperature. Use extreme caution, as this can be life-threatening. Do not use solvent to clean the device. Do not use the device in places with a potential explosion hazard. Do not use the device in a corrosive environment. Do not disassemble the device. Replace the battery as soon as the low battery indicator lights up. Store the device in the place with appropriate temperature (see “Specifications”).

Protect the device from sudden impact and excessive mechanical force. Never attempt to operate a damaged device or a device with damaged electrical parts! Only use accessories and spare parts for this device that comply with the technical specifications. 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.

Ermenrich Warranty

Ermenrich products, except for their accessories, carry a 5-year warranty against defects in materials and workmanship. All Ermenrich 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 Ermenrich product in any country where a Levenhuk office is located if all the warranty conditions are met.

For further details, please visit: levenhuk.com/warranty
If warranty problems arise, or if you need assistance in using your product, contact the local Levenhuk branch.

Appendix 1

Appendix 1. Emissivity values of different materials

Material of the measured surface	Emissivity (ε)

Aluminium

| Oxidised| 0,2–0,4
A3003 alloy (oxidised)| 0,3
A3003 alloy (coarse)| 0,1–0,3

Brass

| Polished| 0,3
Oxidised| 0,5

Copper

| Oxidised| 0,4–0,8
Copper cables and connector blocks| 0,6
Hastelloy| 0,3–0,8

Ferronickel

| Oxidised| 0,7–0,95
Abrasive blasting| 0,3–0,6
Polished| 0,15

Iron

| Oxidised| 0,5–0,9
Rust| 0,5–0,7

Cast iron

Lead

Steel

| Cold rolling| 0,7–0,9
Grinding steel plate| 0,4–0,6
Polished steel plate| 0,1
Zinc (oxidised)| 0,1
Asbestos| 0,95
Asphalt| 0,95
Basalt| 0,7
Carbon (unoxidised)| 0,8–0,9
Graphite| 0,7–0,8
---|---
Silicon carbide| 0,9
Ceramics| 0,95
Clay| 0,95
Concrete| 0,95
Cloth| 0,95
Glass| 0,85
Gravel| 0,95
Plaster| 0,8–0,95
Ice| 0,98
Limestone| 0,98
Paper| 0,95
Plastics| 0,95
Soil| 0,9–0,98
Water| 0,93
Timber| 0,9–0,95

Contact

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 USA 928 E 124th Ave. Ste D, Tampa, FL 33612, USA, +1 813 468-3001, contact_us@levenhuk.com
Levenhuk®, Ermenrich® are registered trademarks of Levenhuk Optics s.r.o. (Europe).

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