Yokogawa MLX - Manual (Page 2)

Page 2 of 49
IM 60A02S01-01E-A
Contents
Loop Powered Process Indicator ........................................................................................ 1
Contents ....................................................................................................................................... 2
1. Introduction .............................................................................................................................. 3
1.1 Safe Use of This Product ................................................................................................... 4
1.2 Warranty .............................................................................................................................. 5
1.3 ATEX Documentation ......................................................................................................... 6
2. Handling Cautions ................................................................................................................... 8
2.1 Model and Specifications Check ....................................................................................... 9
2.2 Unpacking ........................................................................................................................... 9
2.3 Storage ................................................................................................................................ 9
2.4 Selecting the Installation Location ................................................................................... 9
2.5 Insulation Resistance and Dielectric Strength Test ...................................................... 10
2.6 Installation of an Explosion-Protected Instrument ........................................................ 11
2.6.1 Factory Mutual (FM) Certification ............................................................................. 11
2.6.2 CENELEC ATEX Certification ................................................................................... 15
2.6.3 Canadian Standards Association (CSA) Certification ............................................ 21
2.6.4 IECEx Certification .................................................................................................... 24
2.7 EMC Conformity Standards ............................................................................................. 28
2.8 Low Voltage Directive ...................................................................................................... 28
3. Installation ............................................................................................................................. 29
3.1 Mounting Examples ......................................................................................................... 30
4. Wiring ...................................................................................................................................... 31
4.1 Wiring Precautions ........................................................................................................... 31
4.2 Selecting the Wiring Materials ........................................................................................ 31
4.3 Wiring ................................................................................................................................ 32
4.3.1 Loop Configuration.................................................................................................... 32
5. Operation ................................................................................................................................ 33
5.1 Overview ........................................................................................................................... 33
5.2 Setting Engineering Units ................................................................................................ 39
6. Maintenance ........................................................................................................................... 41
6.1 Overview ........................................................................................................................... 41
6.2 Calibration Instruments Selection .................................................................................. 41
6.3 Calibration ......................................................................................................................... 41
6.4 Rotating Display Direction ............................................................................................... 42
6.5 Cleaning ............................................................................................................................ 42
7. General Specifications .......................................................................................................... 43
7.1 Standard Specifications .................................................................................................. 43
7.2 Model and Suffix Codes ................................................................................................... 44
7.5 Dimensions ....................................................................................................................... 47
Revision Record ......................................................................................................................... 48