Yokogawa 202 Field Mounting Rate Totalizer User Manual
Page 8
Introduction
4
1.2 INTRINSIC SAFETY CONSIDERATIONS
The Model 202D is certified for use in hazardous areas and has both CENELEC
and CSA NRTL/C approvals.
The Model 202D 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 must be installed according to
the guidelines in Section 8 and in accordance with standards for wiring and
installation in hazardous areas.
4-20mA/DC Power
The input can be connected to IS circuits with the following maximum values:
Ui = 28V
Ii = 93mA
Pi = 653mW
The internal capacitance and inductance seen on these terminals is 0.1uF and
0mH.