Biomass Gas Analyzer (ZPAF)
Measures H2S, CH4, CO2, and O2generated in biogas plants
- Simultaneous and continuous monitoring of H2S, CH4, CO2, and O2
- Compact and lightweight: 19-inch rack mount, 9 kg
- Easy-to-see LCD
- Optional functions include: automatic calibration, concentration alarm, remote input for switching range, and more.
Specifications
Principle | CH4 & CO2: single-beam NDIR sensor O2: Galvanic cell sensor H2S: Constant-potential electrolytic sensor + Sample-switching system |
|||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Display | 4-digit backlit LCD | |||||||||||||||
Ranges |
|
|||||||||||||||
Number of measurable components | Max. 4 (simultaneous and continuous measurement) | |||||||||||||||
Analog output | 4–20 mA DC or 0–1 V DC (up to 12 points) | |||||||||||||||
Contact output (option) | SPDT relay contact (up to 15 points): device error, calibration error, range identification, auto-calibration status, solenoid valve drive for auto-calibration, limit alarm | |||||||||||||||
Contact input (option) | Voltage contact input (12–24 V DC, up to 9 points) Remote switchover of ranges, auto-calibration remote start, remote hold |
|||||||||||||||
Communication (option) | RS-485 (MODBUS) | |||||||||||||||
Output hold | During calibration, output signal can be hold at the value before calibration. | |||||||||||||||
Range switchover | Manual or automatic | |||||||||||||||
Power supply voltage | 100–240 V AC, 50/60 Hz | |||||||||||||||
Power consumption | Approx. 100 VA | |||||||||||||||
Dimensions | H 133 × W 483 × D 382 mm | |||||||||||||||
Ambient temperature | CH4 & CO2: 5–40°C H2S & O2: 15–40°C |
|||||||||||||||
Weight | Approx. 9 kg | |||||||||||||||
Gas inlet/outlet | Rc 1/4 or NPT 1/4 internal thread | |||||||||||||||
Sensor life expectancy | O2 sensor: approx. 2 years H2S sensor: approx. 1 year |
|||||||||||||||
Certification | CE Marking |
Performance
Repeatability | ±0.5% FS (H2S: ±2.0% FS) |
---|---|
Linearity | ±1% FS (H2S: ±2.0% FS) |
Zero drift | ±2% FS per week |
Span drift | ±2% FS per week (H2S: ±2.5% FS) |
Response time (for 90% response) |
10–30 s (H2S: 180 s) |
Gas conditions
Flow rate | 0.5 ±0.2 L/min |
---|---|
Temperature | 10–50°C |
Pressure | ≤ 10 kPa |
Dust | ≤ 100 μg/Nm3 with particle size ≤ 0.3 μm |