<2. Notes on Handling>
2-15
IM 01C50G01-01EN
ControlDrawingforATEXandIECExExia
Yokogawa Electric Corporation
Model
Title
Control Drawing
No.
Page
Revision
Date
Intrinsically Safe Installation for YTAxxx – F or – G (Ex ia)
Model YTAxxx – F or – G
Supply/Output:
Ui = 30 V
Ii = 300 mA
Pi = 1.2 W
Ci = 2.2 nF
Li = 0 mH
FISCO field device
+
Model YTAxxx – F or – G
Temperature Transmitter
Associated Apparatus
−
+
−
+
−
1
2
3
4
5
Sensor Input:
Uo = 6.0 V
Io = 90 mA
Po = 135 mW
Co = 10 μF
Lo = 3.9 mH
Supply/OutputSensor Input
Hazardous Area Non-Hazardous Area
TerminatorTerminator
Field DeviceField Device
Intrinsically Safe Apparatus
or
Simple Apparatus
Hazardous Area
Linear source or
FISCO power supply
Specific Condition of Use:
–
Electrostatic charges on the non-metallic parts (excluding glass parts) or coated parts of
the Temperature Transmitter shall be avoided.
– (ATEX) When the enclosure of the Temperature Transmitter is made of aluminium alloy, if it is
mounted in a potentially explosive atmosphere requiring apparatus of equipment category 1 G is
required, it must be installed such that, even in the event of rare incidents, an ignition source due to
impact and/or friction sparks is excluded.
– (IECEx) When the enclosure of the Temperature Transmitters is made of aluminium alloy, if it is
mounted in a potentially explosive atmosphere requiring apparatus of equipment EPL Ga is required,
it must be installed such that, even in the event of rare incidents, an ignition source due to impact
and/or friction sparks is excluded.
– The dielectric strength of 500 V r.m.s. between the intrinsically safe circuit and the enclosure of the
Temperature Transmitter is limited, only by the removable surge absorber F9220AR.
WARNING–ELECTROSTATIC CHARGE MAY CAUSE AN EXPLOSION HAZARD.
AVOID ANY ACTIONS THAT CAUSE THE GENERATION OF ELECTROSTATIC CHARGE, SUCH AS
RUBBING WITH A DRY CLOTH ON COATING FACE OF THE PRODUCT.
Note: The surge absorber F9220AR can be removed from, or added to the equipment.
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