Application; Safety Precautions; Specifications; Functional Description / Operating Instructions - Pepperl+Fuchs ecom Ex-MP4 a Betriebsanleitung

1. Application

The Ex-MP4 a is a non-contact temperature meter for industrial application in areas with an increased
risk of explosion in zones 2 and 1, in accordance with directive 2014/34/EU (ATEX).

2. Safety precautions

- Caution! Laser radiation!
- Do not stare directly at the laser!
- Do not aim the unit at other people!
- Risk of eye damage!
- Laser class 2
- Power: < 1 mW
- Wavelength: 630 -670 nm

3. Specifications

Measuring range
Ambient temperature Ta
Storage temperature
Relative humidity
Emission level
Smallest display unit
Target sighting
Accuracy
(at 23°C)
Repeatability
Spectral response
Response time (95%)
Batteries / power supply:
Dimensions:
Weight:
CE-designation:

4. Functional description / operating instructions

Please read these operating instructions carefully so that you are familiar with, and are able to use, all of
the functions of your Ex-MP4 a. For your own safety and information please read through the instructions
on the following pages!

4.1 Mode of operation

All objects with a temperature above absolute zero radiate infrared energy, which extends in every direction
with the speed of light. If an infrared thermometer is trained on an object, the lens gathers the energy and
focuses it on an infrared sensor.
The sensor responds by emitting a voltage signal which is directly proportional to the absorbed energy. The
microprocessor-controlled electronics in the unit are able to ascertain and display the current temperature
(in regard to a wider parameter).
Objects with radiant or polished surfaces not only radiate energy but also reflect a proportion of radia-
tion from their surrounding area. A factor between 0.1 and 1.0 designated as the emission level makes
allowances for this factual calculation so that only the true radiated energy, and not the reflected energy, is
consulted for calculating the measured value. The majority of applications are measured with an emission
level of 0.95.
In the Ex-MP4 a the level is set at 0.95 and cannot be altered.
4
-18 °C to + 400 °C
0 ... +50 °C
-20 °C to +65 °C
10- 95 % r.h. non-condensing at 30 °C
fixed at 0.95
0.2 °C
Laser
-18 °C ... -1°C ±3 °C
-1°C ... +400 °C : ±2 % of reading or ±2 °C, whichever is greater
± 2 % of reading or ±2 °C whichever is greater
7-18 µm
500ms
1 x 9V alkaline battery according to IEC 6LR61, type-tested
152 x 101 x 38 mm
approx. 200g
‡
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