Yokogawa 202 Field Mounting Rate Totalizer - Manual (Page 9)

1.3 INTRINSIC SAFETY CONSIDERATIONS
The Model 202A is certified for use in hazardous areas and has both CENELEC
and CSA NRTL/C approvals.
The Model 202A certification details are:
CENELEC Approval: Kema 98.E.1873.
Type of Protection: Ex ia.
Group: IIB.
Temperature Class: T4 at ambient temperature of 60°C.
CSA NRTL/C Approval
File Number:
LR 104 840-5.
Type: Class 1, Groups C and D.
When installing in hazardous areas, the instrument will have to be installed
according to the guidelines given in section 6 and in accordance with standards
for wiring and installation in hazardous areas.
4-20mA Input
The input can be connected to IS circuits with the following maximum
values:
Ui = 28V
Ii = 93mA
Pi = 653mW.
Relay Outputs
The outputs can be connected to IS circuits with the following maximum
values:
Ui = 28V
Ii = 93mA
Pi = 653mW.
Introduction 7