In many industrial and scientific applications, accurately measuring very low pressure is critical to maintaining safety, performance, and efficiency. Low pressure transmitters, also known as low range pressure sensors or transducers, are essential tools in environments where even the slightest pressure variations must be detected and monitored. At ESI Technology, we specialise in producing high-quality low pressure transmitters engineered for precision, durability, and adaptability across a wide range of conditions.

What Is a Low Pressure Transmitter?

A low pressure transmitter is a device that converts low gas or liquid pressure into an electrical signal that can be read and recorded. These transmitters are specifically designed to measure pressures as low as 50 mbar, making them ideal for applications in medical equipment, HVAC systems, environmental monitoring, aerospace, and leak detection.

What sets low pressure transmitters apart from standard models is their ability to maintain high accuracy and stability at such minimal pressure levels. This requires advanced sensor technology, robust construction, and features that ensure long-term reliability.

Piezoresistive Sensor Technology

At the core of ESI’s low pressure transmitters lies piezoresistive sensor technology. This type of sensing element changes its electrical resistance when mechanical strain is applied due to pressure. Piezoresistive sensors offer exceptional sensitivity and accuracy, particularly in low pressure ranges, making them ideal for applications where small fluctuations can have a big impact.

Key Features of ESI Low Pressure Transmitters

1. Measurement from 50 mbar
Our transmitters are capable of measuring pressure as low as 50 millibar, ensuring accurate detection of even the slightest pressure changes. This is crucial in applications such as clean rooms, filter monitoring, and gas flow systems.

2. Robust Stainless Steel Construction
Durability is essential in demanding environments. ESI’s transmitters are built with robust stainless steel housings that withstand harsh conditions, resist corrosion, and offer longevity in both indoor and outdoor applications.

3. Low Hysteresis and Long-Term Stability
Our sensors are designed for low hysteresis, meaning they deliver consistent readings during pressure changes. Combined with excellent long-term stability, they ensure maintenance-free operation and reduced recalibration needs over time.

4. Wide Operating Temperature Range
Temperature fluctuations often impact sensor performance. ESI low pressure transmitters are engineered to operate reliably over a wide temperature range, making them suitable for both high and low-temperature environments.

5. On-Site Zero and Span Adjustment
To enhance usability, our transmitters offer on-site zero and span adjustment capabilities. This allows for easy calibration and fine-tuning, ensuring precise readings tailored to your specific application needs.

Applications of Low Pressure Transmitters

Low pressure transmitters are vital in a variety of industries, including:

• Medical Devices – monitoring respiratory systems and ventilation

• HVAC Systems – ensuring proper air pressure and flow

• Aerospace and Aviation – cabin pressure monitoring and environmental controls

• Environmental Monitoring – detecting atmospheric or ambient pressure variations

• Process Control – leak detection and vacuum monitoring in industrial systems

Why Choose ESI Technology?

At ESI Technology, we combine innovation with reliability. Our engineering expertise and commitment to quality ensure that our low pressure transmitters meet the highest standards for performance and durability. Whether you need a custom solution or an off-the-shelf product, we provide pressure measurement technology you can trust.

Contact us today to learn more about our low pressure transmitters or to speak with one of our experts about your specific application requirements.