Functional Description / Operating Information; Operation; Overview - Ecom Ex-MX2 Safety Instructions

8. Functional description / operating information

Please take the time to carefully read through these operating instructions to ensure
that you are familiar with and can use all the functions on your Ex-MX2. For your own
safety and information please read through the information on the following pages.

8.1 Operation

All objects with a temperature above absolute zero radiate infrared energy which spreads
in all directions at the speed of light. If an infrared thermometer is aimed at a measure-
ment object, the lens collects the energy and focuses it on an infrared sensor.
The sensor reacts by outputting a voltage signal which is directly proportional to the
absorbed energy. U(sing additional parameters, the microprocessor-controlled electro-
nics of the device are able to determine and display the current temperature. Measu-
rement objects with a shiny or polished surface do not only radiate energy but also
reflect a part of the radiation from their surroundings.
An emissivity factor between 0.1 and 1.5 takes account of this fact so that only the re-
ally radiated (and not the reflected) energy is included in the calculation of the measu-
red value. The majority of all applications are measured with emissivity of 0.95.
It is therefore preset to 0.95 in our machine and can be adjusted depending on the ap-
plication in steps of 0.01. The emissivity range greater than 1.00 is intended for applicati-
ons where measurement objects close to each other with different temperatures should
be measured. This is the case for example if there are two conveying lines with different
temperatures and the temperature of „the colder one" of both should be measured.
The radiated reflected energy thereby would falsify the measurement so that a correct
result would be impossible. The temperature can now also be measured exactly using
the emissivity setting >1.00 by means of a one-time reference measurement with a
contact thermometer.

8.2 Overview

Sensor
Measurement
button
Changeover
switch
26
Display
Adjustment button
Rocker switch
ENTER key
Battery compartment with cover