High Accuracy pressure transmitter for Process Control
High Accuracy Pressure Transmitter solutions for demanding industrial applications. The DR3418 series delivers reliable performance.
During a sweltering night shift, pressure readings from our high-temperature distillation column started fluctuating wildly. Control room values were erratic—stable one minute, plummeting the next—with no apparent process change.
The Physics of Thermal Drift
All sensors drift with temperature. Uncompensated drift can be 10x the datasheet spec. In our case, ambient heat pushed the limits of accuracy for our existing pressure transmitters. The process regularly exceeded 250°C, far beyond initial expectations. Thermal gradients within the sensor caused mechanical stress and electrical changes, leading to errors up to 15%—a direct violation of process control requirements.
Investigation and Root Cause
After eliminating electrical noise and fluid contamination, we traced the issue to temperature variations. Documentation revealed that our sensors’ thermal drift contributed to 15% error in high-temperature applications. This high accuracy pressure transmitter was not living up to its name under real-world conditions.
Solution: Temperature-Compensated Precision
We installed the DR3418, a temperature compensated pressure sensor designed for extreme conditions. Its internal compensation algorithm continuously adjusts for thermal effects, maintaining 0.1% FS accuracy across the operating range. Within hours, readings stabilized, matching actual column behavior. Response time improved from 20ms to 5ms, enabling better control algorithms.
High Accuracy Pressure Transmitter Key Specifications
- High accuracy measurement: 0.1% FS or better
- Temperature compensation for stable readings across operating range
- 4-20mA analog output with optional HART or RS485
- Wide pressure range selection for process applications
- Long-term stability and drift-free performance
- Stainless steel construction for industrial environments
This precision process transmitter turned erratic data into reliable control. What temperature-related challenges have you faced in your processes? Download the DR3418 datasheet to see how it can stabilize your readings.
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