Yokogawa YTA320 Manual do Utilizador descarregar pdf (Página 18)

<2. Notes on Handling>

2-12

IM 01C50B01-01E

Transmitter

Supply

Safety Barrier

*1

Hazardous Location Nonhazardous Location

+

–

+

–

[Installation Diagram]

F0212.ai

Sensor

1

2

3

4

5

*1: In any safety barriers used the output current must be

limited by a resistor “R” such that Imaxout-Uz/R.

b) IECEx Intrinsic safety “ic”

Caution for IECEx Intrinsic safety “ic”.

Note 1. Model YTA110/SU2, YTA310/SU2, and

YTA320/SU2 temperature transmitters are

applicable for use in hazardous locations:

• No

. Certicate: IECEx KEM 09.0032X

• Applicable standard: IEC60079-11:2011,

IEC60079-0:2011, IEC60079-26:2006

• Type of Protection and Marking Code:

Ex ic IIC T4...T5 Gc

• Ambient Temperature:

-40 to 70°C for T4, -40 to 50°C for T5

• Enclosure: IP67

Note 2. Electrical Data

• [Supply circuit (Terminals: + and –)]

Ui = 30 V, Ci = 20 nF, Li = 730 μH

• [Sensor circuit (Terminals: 1 to 5)]

Uo = 9 V, Io = 40 mA, Po = 90 mW, Co = 0.7 μF,

Lo = 10 mH

Note 3. Installation

• All wiring shall comply with local installation

requirements. (Refer to the installation diagram)

Note 4. Operation

• Keep strictly the “WARNING” on the label on

the transmitter.

WARNING: POTENTIAL ELECTROSTATIC

CHARGING HAZARD. SEE

USER’S MANUAL BEFORE USE.

Note 5. Maintenance and Repair

• The instrument modication or parts

replacement by other than authorized

representative of Yokogawa Electric

Corporation is prohibited and will void IECEx

Certication.

Note 6. Special condition for safe use

• Avoid any actions that cause the generation of

electrostatic charge on the non-metallic parts,

such as rubbing with a dry cloth on coating face

of product.

Temperature

Transmitter

Suppry

Power Supply

Hazardous Location

(Zone 2 only)

Nonhazardous Location

+

–

+

–

[Installation Diagram]

F0213.ai

Ratings of the Power Supply are as follows:

Maximum Voltage: 30 V

c) IECEx Flameproof Type and Dust Ignition

Proof Type

Caution for IECEx ameproof type and Dust Ignition

Proof Type

Note 1. Model YTA110/SF2, YTA310/SF2, and

YTA320/SF2, YTA110/SU2, YTA310/SU2, and

YTA320/SU2 temperature transmitters are

applicable for use in hazardous locations:

• No

. IECEx KEM 07.0044

• Applicable Standard: IEC 60079-0,

IEC 60079-1, IEC 61241-0, IEC 61241-1

• Type of Protection and Marking Code:

Ex d IIC T6/T5, Ex tD A21 IP67 T70°C, T90°C

• Ambient Temperature for Gas Atmospheres:

–40 to 75°C (T6), –40 to 80°C (T5)

• Ambient Temperature for Dust Atmospheres:

–40 to 65°C (T70°C), –40 to 80°C (T90°C)

• Enclosure: IP67

Note 2. Electrical Data

• Supply voltage: 42 V dc max.

• Output signal: 4 to 20 mA

Note 3. Installation

• All wiring shall comply with local installation

requirement.

• The cable entry devices shall be of a certied

ameproof type, suitable for the conditions of

use.

Note 4. Operation

• Keep strictly the “WARNING” on the label on

the transmitter.

WARNING: AFTER DE-ENERGIZING, DELAY

5 MINUTES BEFORE OPENING.

WHEN THE AMBIENT TEMP. ≥

70°C, USE THE HEATRESISTING

CABLES OF HIGHER THAN

90°C.

• Take care not to generate mechanical spark

when access to the instrument and peripheral

devices in hazardous location.

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