Z-15i Ein – TDLAS & DOAS FLUE GAS ANALYZER
Model Z-15i Ein
Z-15i Ein in-situ flue gas analyzer combining TDLAS and DOAS to measure SO₂, NOx, CO, CO₂, NH₃ and O₂ continuously and in real time directly in the stack.
- Designed & manufactured in-house
- Tested & calibrated to traceable national standards
- Installation, AMC & after-sales support
Talk to our technical team: 08048057962
Overview
The Z-15i Ein is an in-situ flue gas analyzer that measures gas pollution directly in the stack, without extracting a sample. It combines two optical techniques – tunable diode laser absorption spectroscopy (TDLAS) and differential optical absorption spectroscopy (DOAS) – in one system.
TDLAS covers gases such as CO and CO₂, while DOAS covers SO₂, NO and NO₂; the system can also measure NH₃ and O₂. Measurement is continuous and real-time, and results are available through 4–20 mA analog outputs, relay outputs and an RS485 digital interface for the plant DCS or CEMS data system.
Key features
- In-situ measurement – no sample extraction
- Dual principle: TDLAS + DOAS
- Measures SO₂, NO, NO₂, CO, CO₂, NH₃ and O₂
- Continuous, real-time, high-accuracy monitoring
- Fast response with double modules
- 4–20 mA analog outputs, relay outputs and RS485
Applications
- Continuous emission monitoring (CEMS)
- Stack emission monitoring
- Real-time flue gas pollution measurement
Technical specifications
| Principle | TDLAS |
|---|---|
| Range | CO: 0-1000ppm, CO2 : 0~25% |
| Indication error | ≤2%F.S. |
| Repeatability | ≤2%F.S. |
| Zero drift | ≤2%F.S./7d |
| Span drift | ≤2%F.S./7d |
| Principle | DOAS |
|---|---|
| Range | SO2: 0~1000ppm, NO: 0~1000ppm, NO2: 0~1000ppm |
| Indication error | ≤2%F.S. |
| Repeatability | ≤2%F.S. |
| Zero drift | ≤2%F.S./7d |
| Span drift | ≤2%F.S./7d |
| Power | (220±15%)VAC, 50Hz, 600W |
|---|---|
| Gas source | 0.4~0.8MPa, oil-free, water-free and dust-free |
| Response time | T90≤10s (double modules) |
| Analog output | 5x4-20mA output (depend on gas combination) |
| Switch input | 4xRelay output |
| Digital input | 1xRS485 output |
| Ambient temperature | -20℃~60℃ |
| Ambient humidity | ≤90%RH, non condensing |
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