Pressure Data Logger Catches SCADA Transient Spikes
The SCADA trend showed a steady 50 bar, but the relief valve lifted at 48 bar. Something was wrong with our pressure measurement system. PLCs optimize for process trends, not rapid changes. With a standard scan rate of 500 ms, they miss any event shorter than 250 ms. An 80 ms pressure spike would be invisible to our monitoring system, yet it caused the relief valve to activate. How could we detect such a transient?
During an upgrade, we decided to investigate. We considered alternatives but chose the DR3704 Digital Pressure Gauge with Data Logger. This pressure data logger has a 10 ms response time, capturing even brief pressure transients. It provides continuous, millisecond-level logging at critical points where rapid changes cause issues. The onboard logging captured every fluctuation previously missed by our SCADA system.
Results were immediate. With the DR3704, we identified several pressure spikes that had gone undetected. These transients caused unexpected equipment wear and false alarms. Since implementation, we have seen a 25% reduction in unplanned maintenance costs and increased system reliability. The DR3704 also offers SD card storage with CSV export for easy PC analysis. Its battery lasts 3-5 years, and the IP66 protection ensures durability in harsh environments.
For example, during a routine check, we captured a 100 ms spike that exceeded setpoint. Without the DR3704, this would have remained hidden. As a result, we adjusted our process to prevent future occurrences. This digital pressure gauge with logging is essential for SCADA transient capture and long-term trend analysis.
Key Specifications
- Built-in data logging for pressure trend analysis
- SD card storage, CSV file format export
- High accuracy measurement
- Battery-powered, 3-5 year battery life
- Protection class IP66
- Large memory capacity for long-term recording
- Data export for PC analysis
Have you ever missed a transient that cost your plant downtime? The DR3704 ensures you catch every spike.
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Tags: #pressuredatalogger #digitalpressuregaugewithlogging #SCADAtransientcapture #DR3704
