Minco
Tel: 763. 571.3121 • Fax: 763. 571.0927 • www.minco.com • Doc. #1116290(D)
3
Wiring Diagram
R1
LINE
POWER
CONTROL ROOM
RESISTANCE
4-20 mA LOOP
COPPER LEADS,
TWISTED PAIR
CONTROLLER
AND/OR
INDICATOR
DC
SUPPLY
REMOTE SENSING SITE
THERMOMETER
TEMPTRAN
Installation
of TT211 and TT711 Temptrans
TM
in Class I, Division 1 or 2, Groups A, B, C, and D
hazardous locations.
Read these instructions thoroughly before installing transmitters.
Per Factory Mutual,
1)
Installation shall be in accord with these instructions and the National Electric Code.
2)
If installing in a Class I, Division 1 hazardous area, then refer to document INST. 704,
"CONTROL DOCUMENT, SYSTEM APPROVALS FOR INTRINSICALLY SAFE
TRANSMITTERS" on pages 5-7 of this manual. The Simple Apparatus, referenced in
these pages, is the RTD temperature sensor or thermocouple.
3)
If installing in a Class I, Division 2 hazardous area, then the transmitters must be
mounted in a vent-free enclosure, meeting the "Electrical Utilization Enclosure
Requirements" stated below with which only the Approved equipment will be installed.
All unused openings should be sealed.
4)
Tampering and replacement with non-factory components may adversely affect the safe
use of the system.
Electrical Utilization Enclosure Requirements (Required for Division 2 areas only)
1. Each of the transmitters must be mounted within an enclosure to prevent personal injury
resulting from accessibility to live parts. This enclosure must comply with the requirements
listed below. Further details of the enclosure requirements may be found in ANSI/ISA
Standards S82.01, S82.02, and S82.03.
1.1 Accessibility - The transmitters must be installed within the enclosure so that its
circuits are accessible by the use of a tool only. A part is accessible when a) the IEC
