Product Certifications
March 2016
Reference Manual
00809-0100-4772, Rev FA
140
Product Certifications
3. When the equipment is installed, particular
precautions must be taken to ensure, taking into
account the effect of process fluid temperature, that
the ambient temperature of the electrical housing of
the equipment meets the marked protection type
temperature range;
4. Precautions shall be taken to avoid ignition due to
electrostatic charge on the enclosure
I8, G8 Type of protection "intrinsically safe circuit" level «ia»
Ex marking:
0Ex ia IIC T4 Ga X
Ambient temperature range:
(I8) Flowmeters with pulse output signals,
4-20 mA /HART (-60°C ≤ Ta ≤ 70°C)
Flowmeters with output Fieldbus (I8) and FISCO (G8)
(-60°C ≤ Ta ≤ 60°C)
Input intrinsically safe parameters:
* Applicable values Ui, Ii are limited by the maximum input power Pi.
* It is not allowed to apply max values of Ui, Ii at the same time.
Special conditions for safe use (X):
1. Power supply of flowmeters with Ex marking 0Ex ia IIC
T4 Ga X must be implemented through intrinsically
safe barriers having certificate of conformity for
appropriate subgroups of electrical equipment;
2. Inductance and capacitance of intrinsically safe
circuits of flowmeters with Ex marking 0Ex ia IIC T4
Ga X, with given parameters connecting cables must
not exceed maximum values shown on the
intrinsically safe barrier from the side of explosive
zone;
3. When the equipment is installed, particular
precautions must be taken to ensure, taking into
account the effect of process fluid temperature, that
the ambient temperature of the electrical housing of
the equipment meets the marked protection type
temperature range;
4. When fitted with the 90V transient suppressors, the
equipment is not capable of passing the 500V
insulation test. This must be taken into account upon
installation;
5. The enclosure may be made from aluminium alloy
with a protective polyurethane paint finish; however,
care should be taken to protect it from impact or
abrasion when located in Zone 0;
N8 Type of protection «n» and "intrinsically safe" level «ic»
Ex marking:
2Ex nA ic IIC T5 Gc X (-50°C ≤ Ta ≤ 70°C)
Electrical parameters:
The maximum DC voltage (with output 4-20 mA
HART/pulse) 42V;
Maximum supply DC voltage (with output signal
Foundation Fieldbus and FISCO) 32V
Special conditions for safe use (X):
1. When the equipment is installed, particular
precautions must be taken to ensure, taking into
account the effect of process fluid temperature, that
the ambient temperature of the electrical housing of
the equipment meets the marked protection type
temperature range;
2. When fitted with the 90V transient suppressors, the
equipment is not capable of passing the 500V
insulation test. This must be taken into account upon
installation;
3. Precautions shall be taken to avoid ignition due to
electrostatic charge on the enclosure.
K8 Combination of E8, I8, N8
Intrinsically safe
parameters
Output signal
4-20mA/HART
Pulse
Foundation
Fieldbus
FISCO
Ui,* V 30 30 17.5
Ii,* mA 185 300 380
Pi,* W 1 1.3 5.32
Li, uH 970 20 10
Ci, nF 0 0 0
To Next Page
Loading...
