Orion Instruments Eclipse 705 - Manual (Page 18)

18 57-600 Eclipse ® Guided Wave Radar Transmitter
2.5.2 Intrinsically Safe
An intrinsically safe (IS) installation potentially has flam-
mable media present. An approved IS barrier must be
installed in the non-hazardous (safe) area. See Agency
Drawing – Intrinsically Safe Installation, Section 3.4.2.
To install Intrinsically Safe wiring:
1. Make sure the IS barrier is properly installed in the safe
area (refer to local plant or facility procedures). Complete
the wiring from the barrier to the ECLIPSE transmitter.
2. Remove the cover to the wiring compartment of the trans-
mitter. Install the conduit plug in the unused opening. Use
PTFE tape/sealant to ensure a liquid-tight connection.
3. Install a conduit fitting and pull the supply wires.
4. Connect shield to an earth ground at power supply.
5. Connect an earth ground wire to the nearest green ground
screw (not shown in illustration).
6. Connect the positive supply wire to the (+) terminal and
the negative supply wire to the (-) terminal.
7. Replace the cover to the wiring compartment of the
transmitter.
2.5.3 Explosion Proof
Explosion Proof (XP) is a method of designing equipment
for installation in hazardous areas. A hazardous location is
an area in which flammable gases or vapors are, or may be,
present in the air in quantities sufficient to produce explo-
sive or ignitable mixtures. The wiring for the transmitter
must be contained in Explosion Proof conduit extending
into the safe area. Due to the specialized design of the
ECLIPSE transmitter, no Explosion Proof conduit fitting
(EY seal) is required within 18" of the transmitter. An
Explosion Proof conduit fitting (EY seal) is required
between the hazardous and safe areas. See Agency
Specifications, Section 3.4.1.
To install Explosion Proof wiring:
1. Install Explosion Proof conduit from the safe area to the
conduit connection of the ECLIPSE transmitter (refer to
local plant or facility procedures).
2. Remove the cover to the wiring compartment of the
transmitter.
3. Connect shield to an earth ground at the power supply.
4. Connect an Earth ground wire to the nearest green ground
screw per local electrical code (not shown in illustration).
5. Connect the positive supply wire to the (+) terminal and
the negative supply wire to the (-) terminal.
6. Replace the cover to the wiring compartment of the
transmitter before applying power.
Current Meter
+
–
Test
Current Meter
Power Supply
24 VDC
–
+
(-) negative
(+) positive
G.P./I.S./Explosion Proof Model