Identify and resolve gas pressure issues in HVAC systems with the DM01 pressure logger. Accurately monitor low pressures in natural gas lines shared by multiple rooftop units.

The DM01 pressure logger is an ideal solution for monitoring low natural gas pressures in HVAC systems, particularly when dealing with fluctuations caused by multiple rooftop units sharing the same gas line. This compact and robust logger is specifically designed for challenging environments and offers a measurement range of 0-100 mbar gauge, perfectly suited for your system pressure which falls between 6″ to 14″ of water column.
This makes the DM01 a valuable tool for identifying pressure drops that may be affecting the performance of your make-up air unit. By accurately recording gas pressure over time, the DM01 allows you to pinpoint the exact moments when pressure fluctuations occur, enabling you to diagnose the root cause of the problem. This data can be instrumental in optimizing gas line sizing, adjusting regulator settings, or identifying potential issues with individual rooftop units.
The DM01 pressure logger features a 1/4 NPT male process connection, ensuring compatibility with standard gas line fittings. Its data logging functionality allows for extended monitoring periods, capturing pressure trends over hours, days, or even weeks. The collected data can be easily downloaded to a PC via a USB converter for analysis using the provided software. This software enables you to visualize pressure variations, generate reports, and identify patterns that may be contributing to your HVAC system’s inconsistent performance.
Furthermore, the DM01 is available with an optional ATEX intrinsically safe approval, making it suitable for use in hazardous environments where explosive gases may be present. This certification ensures the logger can be safely deployed in a wide range of industrial and commercial settings.

DM 01 Gas Pressure Logger
- SKU ID: s1-dm01-0021
- Part No: DM01-A2E / DM01-M0K-1000-E-B1-N40-1-000 / ZUSBCD01
- Pressure Sensor Modules: 100 mbar (1.45 psi) gauge
- Process Connection: 1/4 NPT male
- Data Storage Type: Data Logging – DM01
- Digital Interface: USB Converter and PC Software
- Optional Extras: ATEX intrinsically safe approved