Scully SP-IR Installation And Operating Instructions Manual

Scully Retained Product Sensor

Model SP-IR / Installation and Operating Instructions

APPLICATION

The Scully SP-IR Retained Product Sensor is designed to sense residual (retained) product in the bottom of a tank trailer
compartment. It is intended for use as part of the Scully Intelli-Check®Overll & Retained Product Monitoring System.
When properly installed at the lowest point in the compartment, using the Scully supplied weld coupling (or equivalent
mounting), the sensor will detect approximately 3/8"-1/2" of residual product in the compartment.

SENSOR OUTLINE AND MOUNITNG DRAWINGS

The outline dimensions of a typical Scully SP-IR Retained Product Sensor are shown below (Figure 1). The sensor is
designed to be installed into the supplied Scully weld coupling, or dimensionally equivalent user provided mounting
arrangement. Figure 2, on the following page shows the Scully weld coupling as properly installed into a typical tank
compartment. The dimensions shown in parenthesis are given for reference. The weld coupling material is type 6061­T651 aluminum bar stock. It is supplied with a 1/2" NPT female pipe thread, tapped plus 2-3 threads deep to allow for a
minimum of 5 full threads of engagement between the sensor and coupling threads

1/2' NPT

'' (25.4 mm) HEX

1

M20 X 1.50
2 PORTS

'

(64.3 mm)

2.53'

'

Figure 1.

2.33'

'

(59.2 mm)

'

3.30'

(83.8 mm)

Baseefa03ATEX0492X

1.) The apparatus enclosure is made from light metal which must be protected against impact friction.

Ex 86B2056X; Ex 862058X; Ex 86B2096X; BAS99ATEX1157X; Baseefa03ATEX0112X

1.) The ying leads should be mechanically protected and segregated from other electrical apparatus.

2.) The ying leads should be connected to terminals which are adequately separated from the terminals of other circuits.
The terminals should be located in an enclosure which provides a degree of protection of at least IP20.

BUSHING INSTALLATION

The Scully weld coupling should be mounted at the lowest practical point in the tank compartment. In choosing a mount­ing location, assure that there are no reective metal surfaces within 2” directly above the area where the sensor will be
installed. This will prevent the optic signal, which passes into the liquid when the sensor is immersed, from inadvertently
reecting back into the sensor and giving an erroneous dry indication.

The pilot diameter on the bushing is sized to t into a 1-1/8” hole in the tank shell. The larger straight diameter on the
bushing closest to the outside of the tank is intended to allow for a full penetration weld joint with no voids. Welding of the
bushing into the tank should be in accordance with all applicable industry regulations. We recommend that a pipe plug be
installed into the bushing prior to welding the bushing to the tank to prevent heat distortion of the bushing during welding.
Use an anti-seize/lubricant on the pipe plug to facilitate removal after welding.

MaxSafety

SYSTEMS

®

Scully Signal Company / Tel. [phone] / Fax. [phone] / 800 2 SCULLY (272 8559)

70 Industrial Way, Wilmington, MA 01887-3479, USA

61211 Rev D

/ [e-mail] / www.scully.com

Model SP-IR / Installation and Operating Instructions

1.125'

'

28.6 mm)

(

THRU HOLE

(45 )

FULL WELD
(OPTIONAL)

(.188'

')

(4.8 mm)

TYPICAL TANK
SHELL THICKNESS

(.908'

')

(23.1 mm)

Figure 2.

1.56'

')(

39.6 mm)

(

'

(1/2' NPT)

SENSOR MOUNTING

The sensor features a machined shear section, in accordance with industry regulations. This shear section is located
between the 1” hex wrench ats (see Figure 1) and the cast conduit body (junction box) section of the sensor. The sensor

must be installed and removed from the tank using the 1” hex wrench ats. Do not attempt to install or remove the
sensor by twisting the cast conduit body section. Sensors damaged due to twisting of the conduit body are not
covered by warranty.

The sensor is supplied with a small tube of FEL-PRO® C5A® Copper Based Anti-Seize/Thread Lubricant. This anti­seize/lubricant must be liberally applied to the sensor's 1/2" NPT male mounting thread prior to installation into the weld
coupling. Galled sensor mounting threads resulting from failure to use the proper anti-seize/thread lubricant are

not covered by warranty

After application of the anti-seize/lubricant, screw the sensor into the weld coupling hand tight. Wrench tighten the sensor
securely using a 1” open-end wrench on the hex wrench ats. Pay close attention to conduit port alignment (for wiring
purposes) as the sensor is tightened. Always tighten the sensor slightly more to gain proper conduit port alignment -

never loosen.

WIRING

After installation of the sensor, wiring may begin. Install liquid-tight strain relief ttings into the sensor's conduit ports. The
end sensor (typically compartment #1) will require one liquid-tight strain relief tting and a pipe plug. Apply anti­seize/lubricant on the pipe plug threads prior to assembly.

FULL WELD

The SP-IR Sensor should be wired in accordance with the appropriate Intelli-Check System wiring diagram. The sensor
features two wires, white (ground) and black (signal). Leave a sufcient wiring harness service loop in each conduit
junction box for future maintenance. The sensor wires should be connected to the wiring harness wires using crimp
connectors or other permanent means to prevent future maintenance problems. It is suggested that either sealing crimp
connectors be used, or that the standard crimp connections be coated with white lube to further prevent corrosion prob­lems

Copyright © 2012 Scully Signal Company. Dynacheck, Dynamic Self-Checking, Dynamic Self-Testing, Faylsafe, IntelliCheck, Intellitrol are registered trademarks
of Scully Signal Company. All Rights Reserved. Specications are subject to change without notice.

MaxSafety

®

SYSTEMS

Dynamic Self-Testing® Overll Prevention Systems

Scully Signal Company

70 Industrial Way,
Wilmington, MA 01887-3479, USA
Tel: [phone]
email: [e-mail]

/ 617 692 8600

Scully Systems Europe NV

Eksterveldlaan 31a
2820 Bonheiden
Tel: [phone]
email: [e-mail]

/ Belgium

Scully UK Ltd

Meridian House, Unit 33,
37 Road One Winsford Industrial Estate,
Winsford Cheshire CW7 3QG
Tel.: [phone]
email: [e-mail]

/ UK

61211 Rev D

September 2012