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10
MN301905 Rev A
Introduction / Table of Contents (continued)
Step One
Communication:
FCC (US)
Part 15.256, Class B: LR36
(3”, 4”, 5” horn),
LR41
(3”, 4”, 5” horn) & LR46 (8”,
10” parabolic) series
can be installed on any tank material.
Compliance:
The equipment complies with the following standards:
IEC: 60079-0:2011 & 60079-11:2011
EN:
60079-0:2012 & 60079-11:2012
RoHS
This product is an intrinsically safe version (Ex ia IIC T6…T3 Ga) with stainless steel
housing. All electric circuits are fully encapsulated in the internal enclosure, where no
conductive parts will contact with flammable gas. Two-Wire system in service, the
power of the product is from safety barrier limited at:
U
i
= 26.4V
I
i
= 114mA
P
i
= 0.752W
C
i
= 0
L
i
= 51µH
A safety barrier should be placed between power source and instrument for intrinsically
safe version. All connection cables must be screened with maximum length of 500m
(stray capacitor ≤ 0.1 µF/Km and stray inductance ≤ 1mH/Km). The level measurement
instrument must be connected to ground potential and unapproved supplemental
devices are not allowed to use.
Application conditions:
Maximum process temperature
Temp. class
T6
T5
T4
T3
Ta (max.)
60 °C
60°C
95°C
130°C
180°C
65 °C
-----
70°C
130°C
180°C
70 °C
-----
70°C
130°C
180°C
85 °C
-----
-----
130°C
180°C
Pressure for electronic housing 11.5 psi (80kPa) to 16.0 (110kPa).
Ambient temperature: T6: -20°C ≤ Ta ≤ 60°C
T5: -20°C ≤ Ta ≤ 70°C
T4: -20°C ≤ Ta ≤ 85°C
T3: -20°C ≤ Ta ≤ 85°C
Cable Connection:
This product shall be used with certified IECEx and ATEX cable glands and block plugs. The cable
used for “ia” terminal shall be in compliance with the requirement of EN/IEC 60071-14 clause.
Additional requirements for types of protection “I” – intrinsic safety. It’s installing and operation
instructions should be observed if other cable glands are used.
Care should be taken with the cable glands which should be matched to the cable used outside
diameter property; see mark of cable gland for the outer diameter of being cable used.
In order to ensure the required minimum degree of protection, the bolts of cable glands, blanking plug
and relevant sealing bolts are to be tighten down.
