Orion Instruments Atlas - Manual (Page 8)

8 46-638 Magnetic Liquid Level Indicators
1.8.2 Steam Heat Tracing Installation
Steam Heat Tracing is available as a factory installed
option. Steam traced units are generally supplied with a
factory installed insulation blanket (also optional).
Two steam connections (typically 3 ⁄
8
"
× 0.035" tubing)
protrude from the unit. See Figure 2. The following
installation procedure is suggested:
• Remove factory installed plastic caps from the tube ends.
• Inspect tube ends for dents and burrs. Tubing length may
be adjusted (cut), if required.
• Compressed air may be applied to either end to verify that
no foreign material exists in the tube tracing assembly.
• A suitable saturated steam source and drain should be con-
nected. Do not exceed applicable pressure ratings for the
particular tubing size. Standard compression fittings may
be used to make the connections, and either connection
may be used as inlet or outlet.
• Apply steam to the unit and check for leaks.
• Contact factory or local representative for assistance, if
required.
1.8.3 Electric Heat Tracing Installation
Electric Heat Tracing is available as a factory installed
option. Electric traced units are generally supplied with a
factory installed insulation blanket (also optional).
Electrical connections are supplied, based on specific
customer requirements. Operating voltage and power
consumption will vary for each particular configuration.
More specific information is supplied with each unit,
and is also available from the factory (unit serial number
is required).
The two most common configurations are units with a
fixed-point thermostatic switch or units with an adjustable
“bulb-type” thermostatic switch.
1.8.3.1 Units with a fixed-point thermostatic switch
With a fixed-point thermostatic switch (customer specified
temperature set point), a wiring harness, or optional
junction box with terminal strip will be available to
accommodate field wiring. See Figure 3 (typical).
NOTE: It is the responsibility of the customer to comply with applica-
ble installation codes and practices. Installation should be
performed by qualified personnel.
Figure 3
Figure 2