Table of Contents
Advertisement
3710 and 3720 Positioners
INTRINSIC SAFETY AND TYPE n
(Ex ia AND Ex n)
CONDITIONS OF CERTIFICATION:
1. IT IS A CONDITION OF SAFE USE THAT THE FOLLOWING PARAMETERS
ARE TAKEN INTO CONSIDERATION DURING INSTALLATION WHEN THE
EQUIPMENT IS USED AS AN Ex ia APPARATUS:
INPUT PARAMETERS
MAXIMUM INPUT VOLTAGE U
MAXIMUM INPUT CURRENT I
i
MAXIMUM INTERNAL CAPACITANCE C
MAXIMUM INTERNAL INDUCTANCE L
2. IT IS A CONDITION OF SAFE USE THAT THE INPUT VOLTAGE DOES
NOT EXCEED 32 VOLTS WHEN THE EQUIPMENTS IS USED AS
AN Ex n APPARATUS
3. IT IS A CONDITION OF SAFE USE THAT THE EQUIPMENT SHALL
BE MOUNTED SUCH THAT THE EXHAUST VENTS WILL BE SELF-DRAINING.
FlowScanner and Fisher are marks owned by Fisher Controls International LLC, a member of the Emerson Process Management business division
of Emerson Electric Co. Emerson and the Emerson logo are trademarks and service marks of Emerson Electric Co. All other marks are the
property of their respective owners.
The contents of this publication are presented for informational purposes only, and while every effort has been made to ensure their accuracy, they are
not to be construed as warranties or guarantees, express or implied, regarding the products or services described herein or their use or applicability.
We reserve the right to modify or improve the designs or specifications of such products at any time without notice.
Neither Emerson, Emerson Process Management, Fisher, nor any of their affiliated entities assumes responsibility for the selection, use and
maintenance of any product. Responsibility for the selection, use and maintenance of any product remains with the purchaser and end-user.
Emerson Process Management
Fisher
Marshalltown, Iowa 50158 USA
Cernay 68700 France
Sao Paulo 05424 Brazil
Singapore 128461
www.Fisher.com
52
EFisher Controls International LLC 1991, 2005; All Rights Reserved
2-WAY TERMINAL BLOCK
32 V
i
150 mA
0 mF
i
0 mH
i
Figure 38. Type 3722 SAA Approvals Nameplate
Printed in USA
FLAMEPROOF
(Ex d ZONE 1)
CONDITIONS OF CERTIFICATION:
1. IT IS A CONDITION OF SAFE USE THAT THE ENCLOSURE MUST BE
CONNECTED TO EXTERNAL CIRCUITS VIA STANDARDS AUSTRALIA
CERTIFIED Ex d CABLE GLAND OR CONDUIT ADAPTER WITH A MINIMUM
RATING OF IP54.
2. IT IS A CONDITION OF SAFE USE THAT THE EQUIPMENT MUST BE
MOUNTED IN POSITION BETWEEN UPWARD AND HORIZONTAL SUCH
THAT THE VENT IS FACING DOWNWARDS OR HORIZONTALLY.
3. IT IS A CONDITION OF SAFE USE THAT THE IRRELEVANT EXPLOSION
PROTECTION MARKING CODES ON THE CERTIFICATION LABEL ARE
PERMANENTLY SCRIBED OFF UPON COMPLETION OF COMMISSIONING.
Instruction Manual
Form 5300
July 2005
Advertisement
Table of Contents
