9.2 Intrinsic Safe Control Document
9.2.1 Intrinsically safe FM Us and Canada Approved*
I.S.
Barrier
Power
Supply
load
250 ohm min.
Po Barrier < 0.7 Watts
-
+
DHH805A
Hazardous classified location Unclassified location
HART pressure transmitter
Note: see paragraph 9.2.3 for Entity Concept
Entity Parameters
V max = 30 Vdc
I max = 215 mA
P max = 0.85 W
Ci = 0.04 uF
Li = 0 mH
Voc = 2.6 Vdc
Isc = 18 mA
Po = 61mW
Ca = 99 uF
La = 100mH
Note: For FMc Approval, use the FMc barriers
according to Canadian Zone Concept
30 V max , 330 ohms min.
28 V max , 300 ohms min.
22 V max , 180 ohms min.
Intrinsically safe
FM c : CL 1, Zone 0, IIC, T4
Warning. Use of the charger port is not allowed while the DHH805-A
is connected or located in hazardous area
Warning. Use of the USB port is not allowed while the DHH805-A is
connected or located in hazardous area
FM us : CL 1 Div 1 Gr A B C D, T4
CL 1, Zone 0, IIC, T4
*Note. For FMc the equipment is approved only for the Canadian Zone Concept.
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