Franklin Fueling Systems TSP-ULS User Manual

TSP-ULS (Standard Sensor)

Universal Liquid Sensor

Installation Instructions

CAUTION

SENSITIVE INSTRUMENT

When installing this sensor, carefully
lower it into position and DO NOT DROP

it into the sump or tank

Franklin Fueling Systems • 3760 Marsh Rd. • Madison, WI 53718 USA

Tel: [phone] • 800 225 9787 • Fax: [phone] • www.franklinfueling.com

Overview

Magnetic
Reed float switch

opens when float
moves up 0.52 inch

(13.2 mm)

(Wht)

(Blk)

(Wht)

(Blk)

Typical Sensor Input
Interface (Channel N):

For installation in double-walled steel tanks, the
install height is measured from the top of the riser
to the bottom of the interstitial space in the tank

1.48

(37.6 mm)

0.52

(13.2 mm)

3.62

(92 mm)

C NC

Install Height =
Measured height
+1.5 inch (38.1 mm)
allowance for
TSP-K12 height

Colored
marking
pen/tape

Gnd

In

Suspend Sensor Veritcally

The TSP-ULS is a Standard sensor that is used to detect
the presence of a liquid in the normally dry Class 1, Division
1, Group D Hazardous Areas of: sumps, dispenser-pans,
and interstitial areas of double-wall steel storage tanks.
The sensor is supplied with electrical connectors, 25 feet of
cable, and a cord-grip tting (see diagrams). The TSP-ULS
uses magnetic-oat/reed-switch technology (the sensor
must be suspended vertically (See Figure 1) so the oat
can rise freely with the level of a liquid).

When the oat rises more than 1/2 of an inch, the
magnetically sensitive reed switch will open (see internal
oat in Figure 1). An open circuit is recognized as an alarm­condition at the intrinsically safe (I.S) leak detection circuits
of the FFS (Franklin Fueling Systems) ATG console.

• *TSP-KI2 Riser Cap for 2-inch riser pipes, includes a
pre-installed 1/2 inch NPT compression gland (cord grip)
tting. Other riser caps are available for different riser
pipe sizes – consult your factory rep.

• * Riser pipe – 2 inch diameter (OD), threaded at one end
(NPT-14) with all rough edges removed / deburred from
the inner edges.

* = Needed for installation in UST interstitial areas (Figure 2)

Installation Sequence

1. Install Riser Pipe, Manhole.

2. Install conduit, EYS ttings, and weatherproof
junction box.

3. Shut off power.

ELECTRICAL DANGER Avoid electrical
shock hazards: ensure all power
going to the ATG console is turned off,
tagged, and locked-out at the power
panel before doing any maintenance or
installation work at the ATG console.

4. Interstitial installation – see Figure 1 & 2, measure
the INSTALL HEIGHT needed and add 1.5 inches
= total height. Mark the total height on the sensor
cable as shown in Figure 1, pull the cable through
the TSP-KI2 Riser Cap and cord-grip until the mark
shows at the top of the cord grip tting. Tighten the
tting and lower the sensor into the interstitial area
of the tank as shown in Figure 2.

Materials Required

• Optional – TSP-DB1 Epoxy Seal kit for no-strip electrical
connectors – recommended for sites: within ood zones,
high groundwater tables, with poor drainage, or when
junction boxes are not used.

• 1/2 or 3/4 inch NPT (National Pipe Thread, tapered),
Rigid Metal Conduit (RMC) or nonmetallic (PVC) conduit
if allowed by local codes.

• EYS Seal ttings and Epoxy to ll the tting after
operational testing is completed.

• Weatherproof junction Box, gasket, and cover, plus a
3/4 to 1/2 inch NPT reducing bushing if 1/2 inch RMC is
used – see the ATG Installation Guide for recommended
electrical Junction Boxes.

• Wire: THHN, TFFN or THWN, 18 AWG, White & Black,
or Alpha Cable # 58411, 0.114 O.D. – 1,500 feet (457
meters) max. length. Alpha cable #58411 must be use
with nonmettalic conduit.

• Slip joint pliers to seat the no-strip, self-sealing wire
connectors – connectors are supplied with the sensor.

• UL Classied Thread Sealant or pipe dope.

2

Figure 1: TSP-ULS Dimensions

TSP-K

I

2 riser cap

(with cord grip - compression fitting)

Concrete slab
per NFPA 30

Clean fill material
(Gravel typical)

Weatherproof
Junction box

Compression
fitting (Cord grip)

Eys seal Fitting

1/2 or 3/4 inch conduit

2 inch riser pipe

Interstitial area (dry)

TSP-ULS
Sensor

Install height

(as measured)

Double-wall
steel tank

Cover for
14 inch (35.56 cm)

Min. dia. manhole

Manhole

Figure 2: Installation in Double-Walled Steel Tanks

5. Pull the sensor cable through the cord grip tting at
the junction box (also see Figure 3 for installation
within a sump) and tighten all remaining cord-grip
ttings. Trim wire / cables to a 6 or 8 inch (15 or
20 cm) service-loop, and splice the sensor and
console cable/wires together as shown in Figure 4.