Yokogawa MLX - Manual (Page 25)

Page 25 of 49
IM 60A02S01-01E-A
Note 2. Electrical Data
• In the case where the type of explosion protection is intrinsically safe, Ex ia IIC
T4 Ga, only connect to a certified intrinsically safe circuit with the following maximum
values:
Ui = 24 V
Ii = 150mA
Pi = 0.65 W
Effective internal capacitance; Ci = 0
Effective internal inductance; Li = 0
Note 3. Wiring
• For an ambient temperature ≥70°C, heat resistant cables shall be used with a
rating of at least 20°C above the ambient temperature.
• All wiring shall comply with local installation requirements. (Refer to the
installation diagram)
Note 4. Installation
• Observe WARNING on nameplate. (Refer to the installation diagram)
WARNING: AFTER DE-ENERGIZING, DELAY 5 MIN BEFORE OPENING
COVER.
Note 5. Maintenance and Repair
• The instrument modification or parts replacement by other than authorized
representative of Yokogawa Electric Corporation is prohibited and will void
Intrinsically Safe Certification.
Note 6. Special Conditions for Safe Use
• In the case where the enclosure of the MLX is made of aluminum, if it is mounted
in an area where the use of category 1 Ga or 1 Da apparatus is required, it must be
installed such, that, even in the event of rare incidents, ignition sources due to impact
and friction sparks are excluded.