Control of pure gases and gas mixtures
General
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 | |
| 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
- LEL monitoring
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Features
Short response time
Stable for extremely long periods of time
Freely selectable measuring ranges
More than 30 gas mixtures are configurable
Standard gas avoids the need for separate zero and end-point calibration
No reference gas necessary
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Brochure
TCD 8000