Product
Carbon Composite Fuel Quantity Probes
Unmatched Performance and Reliability
At LMS, we pioneered the use of carbon composite materials in fuel quantity probes. Our innovative design offers a significant leap forward in fuel measurement technology, delivering unmatched performance and reliability for your aircraft.
Traditional aluminum probes, while functional, present limitations. They are susceptible to corrosion, required frequent replacement, added unnecessary weight to aircraft and lack optimal crashworthiness. Our co-founder, David Lamphere, recognized the need for a better solution. Leveraging his extensive experience in both aerospace engineering and environmental remediation, pioneered the industry’s first carbon composite fuel quantity probes. Today, LMS continues to be a leader in this technology, providing aircraft operators with a future-proof solution for fuel management.
Product Benefits
Unmatched Weight Savings
Up to 40% lighter than aluminum probes, reducing overall aircraft weight and improving fuel efficiency.
Superior Durability
Virtually immune to corrosion, cracking, dents, and extreme conditions, ensuring long-lasting performance.
Enhanced Safety
Crash-resistant design collapses on impact to prevent fuel tank penetration and leaks.
Simplified Installation
Easy to install, minimizing downtime for your fleet.
Reduced Complexity
No electrical components on AC probes, minimizing potential failure points.
Versatility
Available in various configurations to meet the specific needs of your aircraft.
Additional Add-ons
Built-in Compensator
For improved accuracy across multiple fuel types, our optional compensator uses concentric tubes to measure fuel dielectric properties, providing more precise fuel quantity readings.
Temperature Sensor
A thermistor embedded in the probe measures fuel temperature, delivering comprehensive data for enhanced fuel management.
Low/High Level Sensors
These sensors, similar to fuel probes but shorter, monitor fuel submersion status, sending discrete signals to indicate high or low levels.
Technical Specifications
- Probe Features
- AC Specific Features
- DC Specific Features
- INPUT/OUTPUT
- OPERATIONAL TEMP. RANGE
- SYSTEM ACCURACY
- COMPENSATOR (OPTIONAL)
Features
- No support equipment required (when coupled with LMS signal conditioners)
- Robust composite two-tube design
- Will not dent, scratch, or absorb hand oils
- No friction or cracking under high vibration or slosh loads
- Resistant to cracking or material fatigue
- No friction or riveted electrical connections
- Flange mounted or internal bracket mount
AC Specific Features
- No electrical components on AC probe.
- Polymer end-caps for added durability.
- (Optional) Fuel temperature sensing for comprehensive data.
- (Optional) Point sensor capability (High/Low Level) for precise fuel level monitoring.
DC Specific Features
- Compatible with 200v/m EMI environment for reduced interference.
- Outer-tube grounded to the airframe providing Faraday cage shield for improved signal quality.
- Standard fuel temperature sensing included.
- Low cabling complexity for easier installation.
- Nickel plated end-caps for enhanced corrosion resistance.
Input/Output
- Lo-Z Excitation and Hi-Z Response
- Ground (DC Probes)
OPERATIONAL TEMP. RANGE
-55° C to +75° C
System Accuracy
- MIL-G-26988C Class II (±2% indication, ±0.75% full scale)
- No Compensator Required for One Fuel Type
- Compensator Required for Multiple Fuel Type
- MIL-G-26988C Class I (±4% indication, ±2% full scale)
- No Compensator Required for Multiple Fuel Types
Compensator
- Direct measurement of fuel dielectric properties for improved accuracy across multiple fuel types
Technical Information
| No. | Section and Description | Category |
|---|---|---|
| 1 | Temperature & Altitude | B2 |
| 2 | Temperature Variation | B |
| 3 | Humidity | A |
| 4 | Operational Shocks and Crash Safety | B |
| 5 | Vibration | S (Curve T) R (Curve G) |
| 6 | Explosive Atmosphere | E |
| 7 | Waterproofness | W |
| 8 | Fluids Susceptibility | F |
| 9 | Sand and Dust | S |
| 0 | Fungus Resistance | F |
| 11 | Salt Fog | S |
| 12 | Magnetic Effect | Y |
| 13 | Power Input | ZXX |
| 14 | Voltage Spike | A |
| 15 | Audio Frequency Conducted Susceptibility | Z |
| 16 | Induced Signal Susceptibility | ZCX |
| 17 | Radio Frequency Susceptibility (Radiated and Conducted) | R |
| 18 | Emission of Radio Frequency Energy | M |
| 19 | Lightning Induced Transient Susceptibility | A3J3L3 |
| 20 | Lightning Direct Effects | X |
| 21 | Icing | A |
| 22 | Electrostatic Discharge (ESD) | A |
| 23 | Fire, Flammability | C |
Upgrade your fuel management today
Take flight with efficiency and safety
Contact us today to discuss your specific requirements and learn more about how our solutions can help you achieve optimal aircraft performance.