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Differential Pressure Sensing in HVAC: Mechanical Gauges vs Wired Transmitters vs Wireless IoT Sensors (LoRaWAN, NB-IoT/LTE-M, Wi-Fi)
Executive summary Differential pressure (ΔP) measurement sits at the intersection of energy, IAQ, compliance, and reliability  in HVAC. It’s used for filter loading, duct static pressure, airflow inference, fan performance, and room pressurization (cleanrooms / isolation rooms). Three types of sensor dominate the market: Mechanical gauges : lowest cost and simplest deployment, but usually local-only  visibility unless you add switches or manual rounds. Wired electronic transm
Amin Shad
6 min read


What are the best IoT sensors for monitoring water quality?
IoT water quality sensors are reshaping how industries and municipalities monitor and protect water resources. By delivering real-time data on key parameters like pH, turbidity, temperature, and dissolved oxygen, these smart sensors enable early detection of contamination, improved regulatory compliance, and more informed decision-making. From agriculture to municipal water systems, advancements in accuracy, connectivity, and energy efficiency are making IoT-based water monit
ellenex team
4 min read


Top 20 Applications of Differential Pressure Sensor; Ellenex PDT2 for Industrial Monitoring Ultra Low Pressure
Differential pressure is a simple signal with outsized value: it reveals clogging filters, airflow imbalance, duct leakage, fan performance drift, and containment failures before they become costly downtime. In this article, I break down the top 20 industrial monitoring applications for the Ellenex PDT2—spanning HVAC and IAQ, data centers, cleanrooms, process vessels, pipelines, and facility operations. If you’re building a predictive maintenance program or modernizing instru
Amin Shad
5 min read


100 LPWAN Solutions for Water and Wastewater Industry
100 LPWAN Solutions for Water and Wastewater Industry
Client Growth Team
9 min read


Choosing Between NB-IoT and Cat-M1 (LTE-M)
Excerpt (for LinkedIn / article preview)
Choosing between NB-IoT and Cat-M1 (LTE-M) in the US market isn’t a spec-sheet exercise—it’s a lifecycle business decision. The right choice affects battery replacement cycles, OTA firmware strategy, field maintenance costs, coverage risk by region, and whether your product can scale from a low-data pilot to a nationwide deployment. This article breaks down the technical differences that actually move ROI—mobility, payload headroom, la
ellenex team
4 min read


California's water infrastructure is older than my grandpa! 💧How LPWAN solutions Enhance Infrastructure Performance
California's water infrastructure is older than my grandpa!
LPWAN solutions Enhance Infrastructure Performance, if designed properly, integrate to the legacy systems carefully and deployed in consideration of current and future requirements.
ellenex team
2 min read


Advanced Differential Pressure Monitoring: Ensuring Safety and Compliance in Critical Environments with LoRaWAN® and NB-IoT
Ensure safety and regulatory compliance in medical, pharmaceutical, and aerospace sectors with LoRaWAN® and NB-IoT differential pressure monitoring. This technical guide examines how the Ellenex PDT2 series manages positive and negative pressure environments to prevent contamination and infection spread. Discover the advantages of LPWAN-based condition monitoring for HVAC filters, hospital isolation rooms, and ISO-rated cleanrooms, featuring high-precision data for audit-read
ellenex team
3 min read


Understanding PDT2 Differential Pressure Sensors and How They Compare to Dwyer Magnehelic Gauges
Choosing the right differential pressure sensor can significantly impact accuracy, efficiency, and long-term operating costs. This article compares the modern, wireless Ellenex PDT2 with the traditional Dwyer Magnehelic gauge, highlighting key differences in precision, data integration, installation, and scalability. While the Magnehelic remains a reliable mechanical option for simple visual monitoring, the PDT2 stands out with high accuracy, low-power operation, and seamless
ellenex team
4 min read


Precision in the Cloud: The Future of Wireless Sensor Calibration
Unlock the power of Cloud-Based Calibration Management for Industrial IoT. This guide explores how water utilities, mining, and smart cities are replacing costly field visits with remote, API-driven sensor adjustments. Learn how AI-driven drift detection, OTA offset scaling, and blockchain-backed traceability ensure peak data integrity for LPWAN devices. Reduce downtime, automate compliance, and scale your IIoT infrastructure with next-gen, future-proof calibration solutions.
ellenex team
3 min read


Masters of the Breeze: Airflow monitoring & negative pressure monitoring in hospitals HVAC systems
A major healthcare facility was struggling to maintain safe airflow, negative-pressure performance, and filter efficiency across its HVAC system—while still keeping energy and maintenance costs under control. In this case study, Ellenex deployed its NB-IoT PDT2-N differential pressure sensor with built-in temperature monitoring and the Ellenex Software Platform to deliver near real-time visibility, remote access, and predictive analytics. The result: earlier detection of perf
ellenex team
4 min read
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