ES-817 Rev. D
Copyright 2020. This document and all information herein are the property of Dresser LLC
Page 11 of 14
8.1
Hazardous Location
Refer to the device label for the description of the environment in which the device may be installed.
8.2
Field Wiring
Intrinsically Safe wiring must be made with grounded cable or installed in grounded metal conduit.
(CHAQUE CABLE A SECURITE INTRINSEQUE DOIT INCLURE UN BLINDAGE MIS A LA TERRE OU DOIT
FONCTIONNER DANS UN CONDUIT EN METAL SEPARE) The installation including the barrier earthing
requirements must comply with the installation requirements of the country of use.
Requirements:
(USA): ANSI/ISA RP12.6 Installation of Intrinsically Safe Systems for Hazardous (Classified) Locations and the
National Electrical Code, ANSI/NFPA 70.
CSA (Canada): Canadian Electrical Code Part 1.
ATEX (EU): Intrinsically safe installations must be installed per EN60079-10 and EN60079-14 as they apply to the
specific category.
8.2.1
4 to 20mA Input Terminals
These terminals power the SVI3 and are equipped on the Main Module. This is a standard
component within every SVI3 product.
Entity/NIFW Parameters:
Ui
Ii
Pi
Ci
Li
30 Vdc
125 mA
900 mW
6.5 nF
1
µ
H
8.2.2
Options Module:
All functions listed in this section are included with the Options Module peripheral.
WARNING:
Using the Options Module in an I.S. installation will result in reduced T ratings from the base model.
Please refer to Section 7.1 for ratings.
8.2.2.1
SW Output Terminals
There are two independent isolated switch contact outputs labeled SW#1 and SW#2. The
switches are polarity sensitive, conventional current flows into the plus terminal.
Entity/NIFW Parameters:
Ui
Ii
Pi
Ci
Li
30 Vdc
125 mA
385 mW
5.1 nF
2.4
µ
H
8.2.2.2
Position Retransmit (0-20mA Output) Terminals
The position retransmit returns the measured position represented by a current value between
0-20mA. A certified active or passive barrier may be used for this connection.
Entity/NIFW Parameters:
Ui
Ii
Pi
Ci
Li
30 Vdc
125 mA
650 mW
9 nF
1
µ
H
