3
Site Considerations
Control Drawing
Figure 2. Control Drawing - Example TLS-50 System Site Layout
MP
MP
Non-Hazardous
Area
Circuit breaker panel
or Fused, switched,
neon indication spur
120 or 240 Vac
MP
Magnetostrictive Probe
consoles\50sysdia.eps
Hazardous
Area
DISPENSERS
Hazardous Area
Expoxy Sealed Connection in
a Weatherproof Junction Box
Seal-Off
LEGEND
1/2'' (12.7 mm) Rigid Conduit
Terminal Connection
Conduit Enters Console in an
Intrinsically Safe Area Knockout
Conduit Enters Console in a
Power Area Knockout
IS
PA
Product piping
Double Wall Tank
Single Wall Tank
Single Wall Tank
MP
DP
NOTE: Intrinsically safe wiring (marked ) shall be installed in
accordance with Article 504-20 of the NEC, ANSI/NFPA 70.
Note: conduit requirements are dependent on local electrical regulations.
For probe-to-console wiring, shielded cable is required regardless of
conduit requirements.
WARNING:
Substitution of components may impair intrinsic safety.
Circuitry within the TLS-50 Console barrier forms an intrinsically safe,
energy-limited system. This system makes TLS-50 probes safe for use in
a Class I, Group D hazardous location. TLS-50 probe wiring is intrinsically
safe only when connected to Veeder-Root's TLS-50 Consoles. Reference
Form Number 8469 (TLS-50/TLS-50C Consoles) and Form Number
8462, 8463, 8468, and 8473 (Probes).
I.S.
I.S.
I.S.
12 AWG barrier
ground wire
PA
TLS-50
ALL FUNCTIONS NORMAL
T1 VOL: 9889 GAL
