PRODUCT DESCRIPTIONS:
These instructions cover the following FloTech products:
FT520
Optic System Tester
FT521
API Compatible Optic Test Plug
FT522
Scully Pattern Optic Test Plug
FT523
J560 Optic Test Plug
PRODUCT DESCRIPTION:
FloTech model FT520 Optic System Tester is designed to test 5 wire optic sensors and
thermistor and optic outputs from FloTech, Civacon, and Scully onboard monitors. The
FT520 is supplied with five test lead sets.
1) A five-wire test lead set to test all five wire optic sensors and optic output connections to
optic sockets.
2) A three wire test lead set with probe to test thermistor outputs to thermistor sockets.
3) A two wire test lead set with white and black boots for testing two wire sensors and optic
sockets.
4) A two wire test lead set with a probe to test for a good pulse signal through a string of five
wire sensors.
5) A plug and play test lead set for testing FloTech plug and play probes.
NOTE: Note this monitor is not intended to be used in a hazardous area. Do not use near
flammable liquids or vapors. Keep all man hole lids, vents and API valves closed when
testing a tank.
MONITOR FUNCTIONS:
The FT520 operates on 2 (two) 9v transistor batteries. Batteries are supplied with the tester
but will require changing from time to time depending on use. Do not leave the unit on
overnight, as this will deplete the batteries. Batteries are located behind a door on the back of
the tester.
NOTE: Do not change the batteries in a hazardous location. This could generate a spark
Figure 1 shows the front control panel and identifies each operator. The ON/OFF switch turns
power on and off to the unit. Note the O & I indicators on the switch. O is the off position
and I is the on position. When the ON/OFF switch is turned on a YELLOW LED should light.
This Yellow LED indicates the batteries are in good condition and the tester is sending pulses
to the sensor under test. If the Yellow LED does not light then the batteries need to be
replaced.
Rev: January 2010
Instruction Manual 10234
and cause a hazardous condition.
FT520 Optic System Tester
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