3
Installation
of TT190 and TT230 Temptrans
TM
in Class I, Divisions 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 dwg. INST. 704, "CONTROL
DOCUMENT, SYSTEM APPROVALS FOR INTRINSICALLY SAFE TRANSMITTERS" on pages
5-7 of this manual.
3) If installing in a Class I, Division 2 hazardous area, 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 articulate accessibility
probe applied in every possible position to the exterior or exposed surfaces, including the bottom,
or b) the IEC rigid accessibility probe applied with a maximum force of 30 newtons (6.75 lbs
force) in every possible position to the exterior or exposed surface, including the bottom, touches
the part.
1.2 Protection From Fire - If the enclosure is non-metallic, it shall have the proper flammability
rating as detailed within ANSI/ISA Standard S82.01.
1.3 Grounding - A metallic enclosure must have a protective grounding terminal and be marked
as such. The size of the ground terminal is to be equivalent to the size of the supply circuit
conductor terminals. All accessible non-current conductive parts must be bonded to the
protective grounding terminal.
1.4 General Construction - The equipment enclosure, or parts of the enclosure, required to be in
place to comply with the requirements for protection from electric shock, personal injury,
protection from internal parts and wiring, and external cord and cable assembly strain relief shall
comply with the following tests for mechanical strength: