We Are Hiring! View Our Open Positions Selecteer een taal▼ PRODUCTS COMPANY MEDIA CAREERS EVENTS CONTACT US CARBON COMPOSITE FUEL PROBES The Fuel Quantity Probes from LMS are lightweight, durable and cost-effective. They have been developed to withstand any flight conditions with outstanding reliability. CARBON COMPOSITE FUEL PROBES DIGITAL FUEL QUANTITY INDICATORS AIRCRAFT SIGNAL CONDITIONERS EXTERNAL REFUEL PRESELECT PANEL enlarge AC FUEL PROBES The LMS Carbon Composite Fuel Quantity Probes with AC Systems are made with lightweight and durable carbon composite. They are the lightest fuel probe available in the industry and virtually immune to corrosion, cracking, dents or other field maltreatment. In fact, LMS has delivered over 7,000 carbon composite fuel quantity probes to the field, operating with no field failures in a wide variety of both commercial and military aircraft. CARBON COMPOSITE CONSTRUCTION The LMS Carbon Composite Fuel Probe weighs up to 40% lighter than aluminum of a similar metal probe. For example, a 38” long LMS composite probe now in production (with cable) weighs less than 10 ounces. ELECTRICAL CONNECTIONS All electrical connections to the capacitance probe, from the interface connector to the actual probe tubes, make use of soldered or composite bonded electrical connections. There is no friction or riveted electrical connections on the LMS Carbon Composite Fuel Probe and all electrical terminations are sealed from the fuel environment. DURABILITY Fatigue cracking of aluminum fuel probes, although infrequent, does occur around flood holes or riveted connections especially with a relatively long flange mounted cantilevered unit. The LMS Carbon Composite Probe with carbon composite tubing is inherently resistant to fatigue because the material does not “work harden” as aluminum does. Since the composite tubes weighs up to 40% lighter than aluminum and are generally stiffer, the resonance amplitudes are significantly less. AC FUEL PROBE FEATURES Robust composite two-tube design Won’t dent, scratch or absorb hand oils Low level capability AC system is not susceptible to EMI No electrical components on probe No friction or riveted electrical connections No fatigue or cracking under high vibration or slosh loads Weighs up to 40% lighter than aluminum of a similar metal probe enlarge DC FUEL PROBES LMS’ DC Fuel Probe is compatible with a 200v/m EMI environment. The probe utilizes two carbon composite tubes as the capacitive elements. The outer tube is grounded to the airframe which provides a Faraday cage shield around the probe components. This design shields the diodes from the 200v/m EMI levels. The two tubes are structurally joined by a nickel-plated cap or flange, and linked to the system with an EMI connector. The design protects the probe elements from arcing. The weight reduction benefit is especially noticeable when compared with metal two tube and three-tube designs. FUEL DENSITY MEASUREMENT The LMS DC Fuel Probes are density compensated by measuring temperature and using a proprietary LMS design for correcting the variation of dielectric constant to fuel density. DC FUEL PROBE FEATURES Robust two composite tube design with EMI compatible outer tube Won’t dent, scratch or absorb hand oils Low level capability Full density compensated probe No coaxial shielding (over-braid only) Lowest cabling complexity No outer tube shorts to ground More accurate pre-calibrated system No friction or riveted electrical connections No fatigue or cracking under high vibration or slosh loads enlarge FUEL DIELECTRIC COMPENSATOR Increase system accuracy without additional part numbers LMS’ compensators can be added to AC carbon composite fuel probes. The compensator directly measures the dielectric of the fuel which allows for fuel quantity compensation across variations in temperature and fuel type. Not all fuel gauging systems require a compensator, but it is an option for aircraft that frequently switch between fuel types and demand a high level of accuracy. The compensator is made from stainless steel tubes bonded to a plastic end cap and is built-in to the bottom of a fuel quantity probe. The compensator has three concentric tubes to increase its capacitance range while remaining short to ensure it stays submerged in fuel as long as possible. Increased accuracy across fuel types Environmental MIL-STD and DO-160 Testing Corrosion-resistant stainless steel Integrates into a carbon composite fuel probe For product inquiries or questions, please email: sales@liquidmeasurement.com, or submit the contact form below. Contact Us Subject/Requirements: such as aircraft type and quantity, number of fuel tanks, and basic technical requirements First Name Last Name Email Company P.O. Box 2070 Georgia, VT 05468 p. 802 528 8100 f. 802 528 8131 e. sales@liquidmeasurement.com COMPANY About Us Visitor’s Guide Sponsorships Testimonials Careers Media Library Events Customer Service CONTACT US Copyright 2021 © Liquid Measurement Systems, Inc. Website Privacy Policy