Differential pressure measuring devices

While a standard gauge typically measures pressure relative to the atmosphere, a differential pressure device quantifies the specific difference between two separate points in a system. This capability is essential for monitoring the resistance across a filter or the drop in pressure within air handling systems, allowing technicians to identify performance issues that a single-point reading cannot reveal.

The DPG series consists of high-quality analog gauges designed for HVAC/R applications, with various models covering a wide range of measurements. Options include the DPG60 for low-pressure environments (0–60 Pa) up to the DPG5k for high-pressure systems (0–5 kPa). These devices are engineered for non-corrosive gases and feature a clear analog display for immediate visual confirmation of system status.

These instruments are indispensable in industries where airflow and pressure control are critical for safety and efficiency. Common applications include cleanroom monitoring, laboratory diagnostics, and HVAC systems for monitoring fans, blowers, and filter efficiency. They are also used to measure fluid levels in tanks and flow rates through pipes by detecting the pressure drop across internal components.

The DPT-Priima series is a high-precision multi-range transmitter specifically designed for demanding cleanroom environments. It features an extremely accurate sensor and automatic zero-point calibration, which eliminates the need for manual adjustments and ensures long-term stability. The device supports multiple measurement units and offers proportional output options such as voltage and current for seamless integration into building automation systems.

The "AZ" function found in advanced models like the DPT series provides a significant advantage by automatically recalibrating the zero point at regular intervals. This feature prevents measurement drift over time, which is particularly vital in sensitive applications where even a small error could lead to regulatory non-compliance or system failure. It also reduces maintenance costs by removing the need for periodic manual calibration of the sensor.

Yes, many of the electronic differential pressure transmitters, such as the DPT-MOD series, are equipped with Modbus communication interfaces. This allows real-time pressure and airflow data to be transmitted directly to a central management system, enabling automated control of ventilation, energy savings through demand-controlled airflow, and immediate alerts for filter replacements.