Yokogawa YTA320 - Manual (Page 12)

<2. Notes on Handling>
2-6
IM 01C50B01-01E
() Technical Data
a) ATEX Intrinsically Safe “ia”
Caution for ATEX Intrinsically safe “ia”
Note 1. Model YTA110/KU2, YTA310/KU2 and
YTA320/KU2 temperature transmitters for
potentially explosive atmospheres:
• No. KEMA 02ATEX1026X
• Applicable Standard: EN 60079-0:2009,
EN 60079-11:2007, EN 60079-26:2007,
EN 60529:1991
• Type of Protection and Marking code: II 1 G Ex
ia IIC T4...T5
• Temperature Class: T5, T4
• Ambient Temperature: –40 to 70°C for T4,
–40 to 50°C for T5
• Enclosure: IP67
Note 2. Electrical Data
• In type of explosion protection intrinsic safety II
1 G Ex ia IIC only for connection to a certified
intrinsically safe circuit with following maximum
values:
• [Supply circuit]
Ui = 30 V Ii = 165 mA
Pi = 900 mW
Effective internal capacitance, Ci = 20 nF
Effective internal inductance, Li = 730 μH
• [Sensor circuit]
Uo = 9 V Io = 40 mA
Po = 90 mW
Max. allowed external capacitance, Co = 0.7μF
Max. allowed external inductance, Lo = 10 mH
• The above parameters apply when one of the
two conditions below is given:
- the total Li of the external circuit (excluding
the cable) is < 1% of the Lo value or
- the total Ci of the external circuit (excluding
the cable) is < 1% of the Co value.
• The above parameters are reduced to 50%
when both of the two conditions below are
given:
- the total Li of the external circuit (excluding
the cable) is ≥ 1% of the Lo value and
- the total Ci of the external circuit (excluding
the cable) is ≥ 1% of the Co value.
• The reduced capacitance of the external circuit
(including cable) shall not be greater than 1μF
for Group IIB and 600nF for Group IIC.
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 modification or parts
replacement by other than authorized
representative of Yokogawa Electric
Corporation is prohibited and will void ATEX
Intrinsically safe “ia” Certification.
Note 6. Specific condition of use
• Because the enclosure of the Temperature
Transmitter is made of aluminium, if it is
mounted in an area where the use of category
1G apparatus is required, it must be installed
such, that, even in the event of rare incidents,
ignition source due to impact and friction sparks
are excluded.
• 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.
Transmitter
Supply
Safety Barrier *1
Hazardous Location Nonhazardous Location
+
–
+
–
[Installation Diagram]
F0205.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) ATEX Flameproof Type and Dust Ignition
Proof Type
Caution for ATEX Flameproof Type and Dust
Ignition Proof Type
Note 1. Model YTA110/KU2, YTA310/KU2 and
YTA320/KU2 temperature transmitters are
applicable for use in hazardous locations:
• No. KEMA 07ATEX0130
• Applicable Standard: EN 60079-0:2006,
IEC 60079-1:2007, EN 61241-0:2006,
EN 61241-1:2004
• Type of Protection and Marking Code: II 2 G
Ex d IIC T6/T5, II 2 D Ex tD A21 IP67 T70°C,
T90°C
• Ambient Temperature for Gas Atmospheres:
–40 to 75°C (T6), –40 to 80°C (T5)