Frequently Asked Questions

Allengra's ultrasonic time-of-flight sensors have no moving parts, eliminating wear, drift, and maintenance required by turbine or paddle wheel meters. By measuring acoustic transit time in both flow directions, they deliver high accuracy across wide ranges without pressure drop or obstruction. This non-invasive design ensures long-term stability and reliability for demanding OEM applications where total cost of ownership matters.

Our sensors are optimized for clean to slightly contaminated liquids with predictable acoustic properties including water, glycol mixtures, oils, and many industrial fluids. Performance depends on acoustic impedance, viscosity, and particle content; highly aerated, multiphase, or opaque slurries may require application review. We work closely with OEMs during the specification phase to validate compatibility and ensure optimal sensor configuration for each fluid type.

Allengra sensors are factory-calibrated and deliver accurate measurements immediately upon installation in most applications. Field calibration is not required under normal operating conditions, though verification against a reference standard is recommended during commissioning for critical systems. Our time-of-flight principle inherently compensates for temperature and ensures measurement stability over the product's operational life.

Yes. Allengra sensors support multiple industry-standard output formats including I²C, UART, PWM, and analog signals, enabling seamless integration with PLCs, microcontrollers, SCADA systems, and embedded platforms. We provide comprehensive technical documentation, reference designs, installation kits, and application support to accelerate integration timelines.

With no moving parts and robust solid-state construction, Allengra sensors are designed for operational lifespans exceeding 10 years in typical industrial and HVAC environments. Actual lifespan depends on operating conditions such as fluid compatibility, temperature cycling, and installation quality. Our sensors undergo extensive endurance testing to ensure they meet the reliability expectations of mission-critical applications.

Ultrasonic time-of-flight measurement sends acoustic pulses between two transducers positioned at an angle to the flow. Transit time difference between upstream and downstream pulses is proportional to fluid velocity, enabling precise flow rate calculation. This principle is independent of pressure, density, or conductivity, making it applicable to clean liquids. Integrated temperature compensation maintains accuracy across thermal operating ranges.

Ultrasonic sensors provide excellent turndown ratios, low-pressure drop, and immunity to magnetic or electrical interference unlike electromagnetic or vortex meters. Absence of moving parts eliminates maintenance, extends service intervals, and reduces total cost of ownership versus mechanical meters. Ultrasonic technology offers superior performance in bidirectional and low-flow applications where other methods struggle with accuracy or repeatability.

Ultrasonic sensors offer superior low-flow sensitivity and wider turndown ratios compared to vortex meters, which require minimum Reynolds numbers to generate stable vortex shedding. Unlike vortex technology, ultrasonic measurement introduces zero pressure drop and is immune to vibration-induced noise that can compromise vortex meter accuracy. The absence of flow obstructions also makes ultrasonic sensors ideal for viscous fluids and applications where minimal flow disturbance is critical.

Ultrasonic sensors offer superior low-flow sensitivity and wider turndown ratios than vortex meters, which require minimum Reynolds numbers for stable vortex shedding. Unlike vortex technology, ultrasonic measurement has zero pressure drop and immunity to vibration-induced noise. Absence of flow obstructions makes ultrasonic sensors ideal for viscous fluids and applications requiring minimal flow disturbance.

Our signal processing algorithms incorporate advanced filtering, multi-path averaging, and real-time temperature compensation to reject environmental noise and mechanical interference. Sensor housings are mechanically isolated and designed to minimize vibration coupling into the acoustic path. Extensive testing across automotive and industrial vibration profiles ensures that measurement accuracy remains within specification even under harsh dynamic conditions.

Allengra sensors are deployed across HVAC systems, hydrogen fuel cell vehicles, industrial process control, medical equipment, and energy management applications. OEM partners integrate our technology into heat pumps, cooling systems, fuel dispensers, and analytical instruments where precision liquid measurement is critical. We serve sectors ranging from automotive and aerospace to building automation and renewable energy infrastructure.

Yes. Our ultrasonic technology is well-suited for hydrogen carrier fluids, ammonia solutions, and other alternative energy media due to its material compatibility and non-contact measurement principle. We collaborate with hydrogen mobility and power-to-X developers to validate sensor performance against emerging fuel standards. Specific sensor variants are available for cryogenic, high-purity, or corrosive fluid applications.

Absolutely. We work closely with OEM partners to adapt housing designs, optimize flow body geometry, adjust output formats, and develop application-specific firmware. High-volume programs can include custom calibration profiles, private labeling, and co-development of integrated flow modules. Our engineering team supports customers from concept through production to ensure seamless product fit.

Allengra sensors are designed and tested to meet automotive and aerospace vibration standards, including random, sinusoidal, and shock profiles typical of mobile platforms. Our robust mechanical design and advanced signal processing maintain measurement accuracy and reliability under continuous dynamic stress. Validation testing includes long-term durability assessments to ensure performance retention over the product lifecycle.

Yes. Allengra provides comprehensive technical support including integration guidelines, reference implementations, and direct engineering consultation for industrial automation and process control deployments. We assist with system architecture planning, communication protocol configuration, and field commissioning support. For enterprise customers, we offer training programs and long-term partnership agreements to ensure successful scalability.

Allengra products are designed and engineered in-house, with manufacturing performed through qualified ISO-certified partners to ensure consistent quality and scalability. Our European supply chain enables responsive customer support and adherence to stringent quality standards. Final testing, calibration, and quality control are conducted at our facilities before shipment to customers worldwide.

Allengra maintains ISO 9001 quality management certification and designs products to comply with relevant CE, RoHS, and REACH directives. Industry-specific certifications such as ATEX, UL, or FDA compliance are pursued based on application requirements and customer demand. We continuously expand our certification portfolio to support entry into regulated markets and safety-critical applications.

Yes. Collaboration with OEMs, research institutions, and technology innovators is central to Allengra's development strategy. Strategic partnerships enable us to stay at the forefront of ultrasonic measurement science and accelerate time-to-market for breakthrough applications.

Technical consultations and quotations can be requested directly through our website contact form or by emailing our sales and engineering teams. We typically respond within one business day with initial guidance and, for complex applications, schedule detailed technical discussions. Sample units and evaluation kits are available for qualified development projects to facilitate rapid prototyping and testing.

Allengra is committed to advancing ultrasonic flow measurement toward greater miniaturization, intelligence, and sustainability. Our roadmap includes AI-enhanced diagnostics, wireless connectivity, and next-generation materials for extreme environments and emerging energy systems. We envision a future where flow sensing becomes seamlessly integrated, self-calibrating, and predictive—enabling smarter, more efficient fluid management across all industries.