The FLD-HSC-TL is a high-performance passive hydrocarbon detector designed to detect the unwanted presence of a wide range of liquid hydrocarbons. This multiplexed sensor cable provides quick reaction to light and heavy hydrocarbons and can be used in outdoor environment. The detected hydrocarbons are primarily gasoline, diesel, jet fuel, motor oils, lube and transformer oils, etc. The FLD-HSC-TL sensor cable is offered as factory-assembled modular sensor with heavy-duty waterproof connectors (variant -C), or as a fixed-length encapsulated sensor string with 10-ft leader cable.
Naftosense is the only rope-style sensor in the world that can detect a small volume leak of refined fuels in under 30 seconds. With cleanable, reusable sensors and a 10-year factory warranty on the entire leak detection system, you can rest assured and quickly gain ROI while protecting your facility, and staff from flammable fuel leaks.
The sensor is specially engineered for reliable operation in both indoor and outdoor conditions. The waterproof connectors of -C version allow the sensor to be immune to short-term immersion in water. The encapsulated version is designed for long-term immersion in water in demanding outdoor conditions. The semi-conductive sensor material is extremely durable and can withstand long-term exposure to temperatures in excess of 100°C/212°F. The sensor cable is UV resistant, anti-static, anti-termite and anti-rodent and can be used in tropical applications.
- Product has FM7745 approval
- Detects refined fuels in under 30 seconds
- Re-usable sensors
- 10-year warranty
The sensor cable contains all the wiring necessary for long-range applications and for the connection in series of several sensors to the same NAFTOSENSE acquisition module. FLD-HSC-TL allows up to 3 sensor sections to be connected to the same module.
When used for applications in hazardous areas, the sensor cable shall be wired to an intrinsically safe acquisition module, or alternatively through a Zener barrier to a sensor module or controller installed in the safe zone. Please contact NAFTOSENSE for additional information.
Typical detection times:
- Unleaded Gasoline: < 30 seconds*
- Diesel/Jet Fuel: < 30 seconds*
- Light Crude Oils: 4-5 minutes
- Heavy Crude Oils: 8-10 minutes
- Motor/Bunker Oils: 10-13 minutes
*These performance metrics are validated by FM Approvals
Features
FLD-HSC-TL Hydrocarbon Sensor Features
- Detects reliably all fuels and oils
- Reusable after contamination
- Fully passive construction, guaranteed service life of 20+ years
- Insensitive to vibrations, methane, water, salt fog
- Not affected by continuous exposure to sunlight
- Wide operating temperature range
- Reduced maintenance and easy troubleshooting
Specifications
FLD-HSC-TL Hydrocarbon Sensor Specifications
| Operating Life | 20+ years at 104°F (materials tested in natural ageing conditions) |
| Weight | 1.29 oz per foot (120 g/meter max) |
| Fire Rating | Non-flame propagating |
| Connector Ingress Rating | IP68 suitable for outdoor/direct burial |
| Operating Temperature Range | -40°F to +185°F (-40°C to +85°C) |
| Maximum Section Length | 50 feet (15 m) |
| Hazardous Locations Classification | IS/ I/ 1/ ABCD/ T4 ; I/ 0/ AEx/ ia IIC T4 ; Class I, Zone 0, Ex ia T4 Class I, Div. 1, Groups A,B,C,D; T4 II 1 G Ex ia IIC T4 Ga |
FLD-HSC-TL Hydrocarbon Sensor Product Codes
| FLD-HSC-TL-C-10 | Modular Multiplexed Sensor cable for hydrocarbon fluids up to 3 sections length of 3 m/ 10-ft |
| FLD-HSC-TL-C-25 | Modular Multiplexed Sensor cable for hydrocarbon fluids up to 3 sections length of 7.5 m/ 25-ft |
| FLD-HSC-TL-C-40 | Modular Multiplexed Sensor cable for hydrocarbon fluids up to 3 sections length of 12 m/ 40-ft |
| FLD-HSC-TL-C-50 | Modular Multiplexed Sensor cable for hydrocarbon fluids up to 3 sections length of 15 m/ 50-ft |
| FLD-HSC-TL-10* | Single-section Sensor cable for hydrocarbon fluids, no connectors, with 10-ft (3 m) indoor-rated lead cable – length of 10-ft (3 m) |
| FLD-HSC-TL-25* | Single-section Sensor cable for hydrocarbon fluids, no connectors, with 10-ft (3 m) indoor-rated lead cable – length of 25-ft (7.5 m) |
| FLD-HSC-TL-40* | Single-section Sensor cable for hydrocarbon fluids, no connectors, with 10-ft (3 m) indoor-rated lead cable – length of 40-ft (12 m) |
| FLD-HSC-TL-50* | Single-section Sensor cable for hydrocarbon fluids, no connectors, with 10-ft (3 m) indoor-rated lead cable – length of 50-ft (15 m) |
*On request, the single-section sensor can be supplied with longer lead cable of up to 300-ft (90 m). The sensor length can be also extended to 50-ft (15 m).
Applications
FLD-HSC-TL Hydrocarbon Sensor Applications
- Monitoring of diesel generators, fuel storage tanks
- Liquid hydrocarbons leak detection in tank farms, compounds, along pipeline sections
- Detection of leaking fuel from airport hydrant systems
- Monitoring of Military and Scientific fuel depots in demanding environmental conditions
- Leak detection in commercial buildings, hospitals, data centers, etc.
- Monitoring of oil-filled power transformers, lube oil storage tanks, etc.
Q & A
FLD-HSC-TL High-Reliability Hydrocarbon Sensor Q & A
The FLD-HSC-TL is designed to detect a broad range of liquid hydrocarbons — including gasoline, diesel, jet fuel, motor oils, lubricant oils, transformer oils, etc. For light refined fuels (gasoline, diesel/jet fuel), the detection time is very fast — under 30 seconds. So in short: high voltage = less current = smaller cables & fewer auxiliary components = lower installation cost, assuming your facility can supply the needed medium-voltage power safely. For heavier or more viscous fluids, detection takes longer:
- Light crude oils: ~4-5 minutes
- Heavy crude oils: ~8-10 minutes
- Motor / Bunker Oils: ~10-13 minutes
- Temperature range: ?40 °F to +185 °F (?40 °C to +85 °C) for the HSC-TL version.
- Ingress / Protection: The connectors are IP68 rated, making them suitable for outdoor use and direct burial. The ?C variant (modular) has waterproof connectors for short-term water immersion; the encapsulated version is designed for more permanent immersion.
- Chemical / physical resistance: The cable jacket is UV rated, anti-static, anti-termite, anti-rodent. The sensor is insensitive to vibration, methane, water, salt fog.
Section Length & Multiplexing: The FLD-HSC-TL version allows up to 3 sections of sensor cable to be connected in series to the same Naftosense acquisition (monitoring) module.
Maximum cable length per section: Up to 50 ft (15 m) per section.
Hazardous Location / Safety classification: It is approved / certified for use in hazardous areas, with intrinsic safety ratings:
- IS / I / 1 / ABCD / T4
- I / 0 / AEx / ia IIC T4
- Class I, Zone 0, Ex ia IIC T4 Ga; also “Class I, Div.1, Groups A-D; T4”
Compatibility: The sensor cable must be used with Naftosense’s sensor/acquisition (monitoring) modules. Using it with non-Naftosense modules may invalidate some performance claims or certifications.
- Warranty: 10-year factory warranty.
- Operating / useful life: The materials are designed to last 20+ years under ambient use (for the “TL” version) at moderate conditions; the datasheet mentions long-term durability even at higher temperatures for some versions.
- Reusability / maintenance: The sensor is reusable after contamination — meaning if it gets contaminated (by dirt, exposure, etc.), it can be cleaned. Reduced maintenance is flagged as a feature.
- Interface / Modules: The sensor cable is multiplexed, meaning multiple sections (up to 3 for TL version) can be connected to the same sensor module / monitoring unit. For installation in hazardous areas, an intrinsically safe acquisition module, or alternatively a Zener barrier, is required.
- False alarm mitigation: The design is claimed to be insensitive to various environmental factors (vibrations, methane, water, salt fog, UV). These reduce chances of nuisance or false alarms due to non-hydrocarbon triggers.
- Certifications / Regulatory standards: It holds FM Approvals, specifically tested to FM7745 standard; approvals for hazardous locations (Class I, Div/Zone, etc.) help satisfy regulatory requirements.
Downloads
Download Naftosense FLD-HSC-TL High-Reliability Hydrocarbon Sensor Datasheet
Also be sure to check out the following:
FLD-O2W-SP Sensing Probe for Oil-On-Water Leak Detection
FLD-SMC High-Performance Leak Detection Controller
Talk to one of our technical specialists today at (855) 737-4718, or fill out our online form to learn more.