Sample Conditioning System for HCDT-5673
| Measuring Technology |
Fiber-optic Fabry-Pérot interferometer for moisture measurement
Chilled mirror with optical detection by internal total reflection for hydrocarbon condensation point measurement |
|---|---|
| Measurement Channels |
1x Trace moisture (optical measurement) 1x Hydrocarbon dew point temperature (HCDT) |
| Moisture Sensor |
Calibrated range: Dew point −80 °C to +20 °C (−112 °F to +68 °F) Accuracy: ±1 K Customized calibration / validation available |
| HCDT Sensor |
Measurement range (standard): −20 °C to +5 °C (−4 °F to +41 °F) Measurement range (extended): −30 °C to +20 °C (−22 °F to +68 °F) Accuracy: ±1 K Customized calibration / validation available (e.g. mg/m³ correlation) |
| Measurement Mode |
Moisture: continuous Hydrocarbon dew point: cyclic (cooling / heating sequence) |
| Interfaces |
3x Analog outputs (0/4–20 mA) 1x Analog output (0/4–20 mA, Ex-i) Modbus TCP/IP Modbus RTU (RS232 / RS485) PROFIBUS RS232 |
| HMI |
Graphic display (320 × 240) Red backlit touch screen |
| Certifications |
ATEX, IECEx (available on request) Additional certifications upon request |
| Process Integration |
Standard sample conditioning system Sample conditioning system 5985-72 (incl. CE declaration) Customized sample conditioning systems available |
| Hydrogen Compatibility |
Natural gas with hydrogen admixture ≤10 mol%: on request Natural gas with hydrogen admixture ≤20 mol%: on request Operation in pure hydrogen: on request |
ATEX, IECEx (available on request)
Additional certifications upon request
The HCDT-5673 combines two complementary measurement technologies within one analyzer system: fiber-optic trace moisture measurement based on the Fabry-Pérot principle and hydrocarbon condensation point determination using proven chilled mirror technology.
Both measurement principles are integrated within a single analyzer and a common sample conditioning system, enabling consistent and reliable monitoring of gas quality parameters under real process conditions.
This approach allows the simultaneous and direct measurement of trace moisture and hydrocarbon condensation limits, providing a comprehensive understanding of gas quality. Exceeding the hydrocarbon condensation point can lead to liquid dropout and operational risks in pipelines and downstream equipment.
A key advantage of the system is that moisture and hydrocarbon condensation are measured independently without mutual influence. The optical moisture measurement provides continuous monitoring, while the hydrocarbon condensation point is determined in a cyclic measurement sequence at the sensor. This ensures stable and reliable moisture monitoring under all relevant operating conditions.
BARTEC supports the validation of both measurement parameters under near-process conditions, including independent laboratory verification. In addition, application-specific calibration approaches such as correlation to condensate quantity can be realized where required.
The development is based on close collaboration with operators in the natural gas industry and reflects established engineering practices, including consideration of relevant standards such as DVGW.
The analyzer is currently designed for use in natural gas applications with hydrogen admixtures of up to 20 %, depending on the specific application and operating conditions.
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