
TSP-DIS & TSP-EIS
Interstitial BriteSensor® & Standard Sensor
Installation Instructions
Franklin Fueling Systems • 3760 Marsh Rd. • Madison, WI 53718 USA
Tel: +1 608 838 8786 • 800 225 9787 • Fax: +1 608 838 6433 • www.franklinfueling.com

Overview
Conductivity Sensors
1.10
(27.94
mm)
0.62
(15.75
mm)
0.63 (15.75 mm)
2.69
(68.33 mm)
3.22
(81.79 mm)
0.63 (15.75 mm) HEX
TSP-EIS
TSP-DIS
Discriminating
Interstitial
Sensor (Britesensor
®
)
Electro-optic
Interstitial
Sensor (Standard Sensor)
Double Wall
Fiberglass
Tank
Manhole
Cover For
14 Inch (35.56 Cm)
Min. Dia. Manhole
1/2 or 3/4 Inch Conduit
2 Inch (50.8 Mm)
Riser Pipe
TSP-DIS
or
TSP-EIS
Sensor
Eys Seal
Fitting
Interstitial
Area (Dry)
TSP-K12 Riser Cap
(With Cord Grip Compression Fitting)
Clean Fill Material
(Gravel Typical)
Concrete Slab
Per NFPA 30
Weatherproof
Junction Box
Compression
Fitting
(Cord Grip)
Annular Space
Interstitial Sensor
(TSP-EIS or TSP-DIS)
Pull Wire
Doublewall
Fiberglass Tank
Sensor Cable
Pull Wire
Riser Pipe
The TSP-EIS is a Standard sensor and the TSP-DIS is
an intelligent BriteSensor.® These sensors are used to
detect the presence of liquids in the normally dry interstitial
(annular) areas of double-wall fuel storage tanks (a Class
1, Division 1, Group D Hazardous Area). Both types of
sensors use electro-optical technology (LED & Prism) for
liquid-detection.
Figure 1: TSP-DIS and TSP-EIS Dimensions
The TSP-EIS communicates its identication code and
current detection status to the ATG console (water present
or normal – no liquids detected). An open-circuit is
recognized as an alarm-condition at the intrinsically safe
(I.S) leak detection circuits of the FFS (Franklin Fueling
Systems) ATG (Automatic Tank Gauge).
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: Red, White, & •
Black or Alpha Cable # 58113, 0.131 O.D. – 1,500 feet
(457 meters) maximum length. Alpha cable #58113
(INCON P / N 600-0063) must be used when using
nonmetallic (PVC) conduit.
Slip joint pliers to seat the no-strip, self-sealing wire •
connectors (connectors included with the sensor).
Thread UL approved sealant or pipe dope as required •
for installation in UST interstitial areas (Figure 2).
2
The TSP-DIS sensor is enhanced with conductivity
sensors and a small microprocessor which allows it to
discriminate between water and product. The TSP-DIS
also communicates its identication code and current
detection status to the ATG console (water present,
product present, or normal – no liquids detected).
Both sensors are supplied with no-strip electrical wire
connectors, 25 feet of cable, a Model ID tag, and a cordgrip tting for connection to a weatherproof electrical
junction box (see diagrams).
Testing the Sensors
Dip the tip of the sensor in a clean cup of water – a
standard sensor alarm is generated for a TSP-EIS sensor
and a water alarm is generated for the TSP-DIS sensor.
When dipped in isopropyl alcohol, the TSP-DIS sensor will
produce a product alarm.
Test sensors on a yearly basis, or more frequently — per
local code.
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.
Figure 2: Installation in Double-Walled Fiberglass Tanks
* 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.

Installation Sequence:
Double
Wall
Steel
Tank
Install Height
(Measured)
Manhole
Cover For
14 inch (35.56 cm)
Min. Dia. Manhole
1/2 or 3/4 Inch Conduit
2 Inch (50.8 Mm)
Riser Pipe
Eys Seal
Fitting
Interstitial
Area (Dry)
TSP-DIS Or
TSP-EIS
Sensor
Clean Fill Material
(Gravel Typical)
TSP-KI2 Riser Cap
(With Cord Grip Compression Fitting)
Concrete Slab
Per NFPA 30
Weatherproof
Junction Box
Compression
Fitting
(Cord Grip)
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 – Figure 2, measure the
length of the riser pipe + 1.5 x diameter of tank
= _________total length. Mark this length on the
cable and pull it through the TSP-KI2 riser cap
cord-grip until the mark is 12 inches (30.5 cm)
above the tting. Tie one end of the pull-wire to the
sensor pull cap and pull the wire until the sensor
cable moves just above the cord-grip (leave the
pull wire in place: loop the wire around the cable)
and then tighten the tting.
5. Interstitial installation (Figure 3), measure the
INSTALL HEIGHT needed and add 1.5 inches for
the riser cap = total height.
Mark the total height required on the sensor cable, and
pull the cable through the TSP-KI2 riser cap 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 3.
8. Test sensor (verify that an alarm is produced at
ATG console), if it does produce an alarm, seal
EYS seal ttings and electrical connectors with
epoxy.
9. Turn off power again if other devices are to be
installed (Repeat Step 3).
10. Reinstall all safety covers and guards, junction
box gasket and covers – use pipe-dope to seal all
tting threads.
11. Install the manhole cover.
12. Record the location where the sensor was
installed on the chart on the back page of these
instructions. This information will be needed when
programming the ATG.
13. Turn on power and program the ATG – Ref: all
relating to Sensors in the Setup / Programming &
Installation manuals.
General Installation Notes
* Steel double-walled tanks: codes may require a nonconductive isolation-bushing be installed between the tank
and riser pipe.
It is the installer’s responsibility to
comply with all applicable federal, state
and local codes. Failure to do so may
create an Environmental Hazard.
Plan your conduit routing. Dig trenches as necessary to
install conduit from each junction box to the Intrinsically
Safe (I.S.) knockouts at the ATG console. You must
install a weatherproof, electrical junction box inside each
manhole. The junction box should be installed high on the
manhole wall to prevent it from being submerged during
heavy rains.
Figure 3: Installation in double-Walled Steel Tanks
6. Pull the sensor cables through the cord grip tting
at the junction box and tighten all remaining cordgrip ttings. Trim wire/cables to a 6 or 8 inch (15
or 20 cm) service-loop and splice the sensor and
console wires together per Figure 4 .
7. Power up console for next step.
* Fill the bottom of the manhole with crushed stone to
facilitate drainage when the sensor is installed in the
interstitial space of a steel tank. Do not cover the top of
the riser cap with ll material, it must remain accessible for
service / sensor installation.
The conduit may enter the manhole either from the bottom
or the side.
A junction box may be used inside of the building as a pull
box to combine several sensor cables. If this is done, then
only one I.S. conduit knockout will be used.
WARNING Conduits must have EYS
seal ttings installed in accordance
with NFPA 70 (National Electric Code)
and NFPA 30A (Automotive and Marine
Service Station Code). Failure to seal
conduits in accordance with NFPA 30A,
and NFPA 70 could allow ammable
vapors to travel through the conduit in
the ATG console. An explosion could
result causing serious injury, property
loss, or death.
3

CAUTION Seal all threaded ttings
TO 3-W I RE SENSOR
3 W IR ES/C ABLE FROM CON SOLE
3-C ONDUCTO R CABLE FROM SE NSOR
SENSOR N
IN(WHT)
Only remove the
umper link between:
IN (wht) & GND (blk),
wh en a sensor channel is w ired
Note: The PWR (red) terminal
is only used wi th 3-w ire sensors
GND(BLK)
PWR(RED)
PWR(RED)
SENSOR 1
IN(WHT)
GND(BLK)
Insert the unstripped w ires
fully into the self-sealing,
no-strip electrical connector.
Use slip-joint pliers and
seat the black portion
to
make a good electrical connection
GND
(BLK)
PWR
(RED)
IN
(WHT)
and conduit threads to produce a
weatherproof seal.
Figure 4: TSP-DIS / TSP-EIS Wire Splicing
and Console Wiring
Record Sensor Location
Sensor Channel # / Notes
Electrical Wiring
Reference the ATG Installation Manual and see Figure 4
for sensor wiring details.
©2008 FFS 000-1344 Rev D