Gas analyser TCD 8000

monitoringprocessthermal conductivity

TCD 8000 Binary gas Analyser uses thermal conductivity technology to perform the measurement of binary gas mixtures Principle The TCD 8000 analyser uses a micromechanical silicon sensor and its numerous advantages: –Fast process measurement –Short response time (T90), independant of flow rate –Stable for extremely long periods of time –No reference gas needed Technical specifications Measurement method - Difference in thermal conductivity of various gases Ranges - Freely selectable measuring ranges Analog Output signals - 2 x 4..20mA configurable Digital output - Ethernet-10/100BASE-T (standard) 4 x D/O configurable (standard) Modbus RS232/485 Profibus DP/PA and Profinet (optional) Linearity - ≤ 2 % of span Repeatability - < 1 % of span Zero Drift - ≤ 2 % of span of the smallest measurement range per week Sensitivity Drift - ≤ 0.5 % of smallest possible measurement range per week Output Fluctuation (2 σ) - ≤ 0.5 % of smallest measurement range span at electronic - T90 time = 0 sec Detection Limit (4 σ) - ≤ 1 % of smallest measurement range span at electronic - T90 time = 0 sec Warm-up time - Approx. 30 minutes, 90% Response Time Response time - T90 ≤ 2 sec at sample gas flow of 60 l/h and electronic, T90 time (static /dynamic) = 0/0 sec Temperature - +5 to 45°C Dew Point - 5 °C below the temperature throughout the sample gas path Pressure - 2 - 100 hPA Flow rate - 10 - 90 L/h Connections - 1/8 NPT female thread (inlets and outlets) Power supply - 100 - 240 V AC (- 15 %, + 10 %) 50-60 Hz (± 3 Hz). Dimensions - Rackable unit 19’’ - Total height: 3U (133mm) – Depth: 365 mm. Applications Hydrogen purity measurement Inert gas monitoring Turbogenerator monitoring