Yokogawa MLX Manuel d'utilisateur télécharger pdf (Page 25)

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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.

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Yokogawa MLX Manuel d'utilisateur Page 25