Emerson Rosemount 8800D Series Reference Manual page 156

Reference Manual
00809-0100-4004, Rev DC
Special conditions for safe use (X):
For flowmeters with Ex marking 0Ex ia IIC T6 Ga X, Ga /

Gb Ex d [ia] IIC T6 X and transmitter with Ex marking
1Ex d [ia Ga] IIC T6 Gb X cabling in explosive area must be
conducted according to requirements of IEC
60079-14-2011. Sheath cables must be designed for a
maximum ambient temperature;
Remote installation should be made only with special

coaxial cable provided by the manufacturer of
flowmeters;
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;
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:
Intrinsically safe
4-20mA/HART
parameters
Pulse
(1)
Ui, V 30
(1)
Ii, mA 185
(1)
Pi, W 1
Li, uH 970
Ci, nF 0
1. 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):
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;
148
Output signal
Foundation
FISCO
Fieldbus
30 17.5
300 380
1.3 5.32
20 10
0 0
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;
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;
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;
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):
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;
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;
Precautions shall be taken to avoid ignition due to

electrostatic charge on the enclosure.
K8 Combination of E8, I8, N8
Product Certifications
May 2016
Product Certifications