BioGas Analyser 3000

•  CH4 CO2 & O2 - standard measurements
•  H2S, H2 and CO - choice of up to two optional measurements
•  Modular design enabling hot-swap for serviceability and onsite maintenance
•  User calibration function to maintain accuracy & ensure data reliability in extreme temperatures
•  ATEX and IECEx certified for use in potentially explosive gas atmospheres - zone 2
•  ISO / IEC 17025 calibration for optimal accuracy
•  Ability to monitor the gas control process before and after desulphurisation
•  Continuous monitoring option
•  Up to 4 sample points to monitor the complete gas control process
•  IP65 rated for weather proofing
•  Built in liquid level monitoring with a dedicated alarm to inform the user that the contents of the catchpot requires emptying or an optional automated moisture removal drain
•  Gas alarms & fault notifications
•  6 x 4-20mA outputs
•  Modbus RTU communication
•  Optional Profibus and Profinet communication
•  Clear, visual and informative colour display
•  Optional heater to extend operating temperature range to -20°C
•  Extended Warranty & Service pack options through approved global service centres
   

GENERAL SPECIFICATION
Number of sampling points: 1-4
Gases to be monitored: CH4, CO2 and O2 with optional H2S, H2 and CO (choice of up to 5)
Reading intervals: User definable, with a continuous1 CH4, CO2 and O2 option available
Operating temperature range: 0°C to +50°C without heater, -20°C to +50°C with heater

POWER
Mains options: 110-230 VAC 50/60 Hz
Consumption: 155W max.
Backup memory: Lithium manganese dioxide backup battery for memory retention

GAS RANGES
Gases measured
CH4 and CO2: By dual wavelength infrared cell with reference channel
O2: By internal electrochemical cell
H2S / H2 / CO: By internal / external electrochemical cell
Cell
Range
Typical accuracy (range : accuracy)*
Standard gas cells
CH4
0-100%
0-70% : ±0.5% (vol)
70-100% : ±1.5% (vol)
CO2
0-100%
0-60% : ±0.5% (vol)
60-100% : ±1.5% (vol)
O2
0-25%
0-25% : ±1.0% (vol)
Cell
Range
Typical accuracy (range : accuracy)*
Internal accuracy
External accuracy
Optional gas cells
H2S
0-50ppm
±1.5% FS
±1.5% FS
H2S
0-200ppm
±2.0% FS
±1.5% FS
H2S
0-500ppm
±2.0% FS
±2.0% FS
H2S
0-1,000ppm
±2.0% FS
±2.0% FS
H2S
0-5,000ppm
±2.0% FS
±100ppm or 5% of reading (if greater)
H2S
0-10,000ppm
±5.0% FS
±200ppm or 5% of reading (if greater)
CO
0-1,000ppm
±2.0% FS
±3.0% FS
H2
0-1,000ppm
±2.5% FS
±1.5% FS
Range
Response time
Response time, T90**
CH4
≤10 seconds
H2S (0-50ppm)
≤30 seconds
CO2
≤10 seconds
H2S (0-200ppm)
≤35 seconds
O2
≤20 seconds
H2S (0-500ppm)
≤35 seconds
H2S (0-1,000ppm)
≤35 seconds
H2
<90 seconds
H2S (0-5,000ppm)
≤40 seconds
CO
<30 seconds
H2S (0-10,000ppm)
≤40 seconds
** Times are taken from the point gas enters the BIOGAS 3000 module. Sample times will vary depending on length of sample pipe
Cell lifetime
O2 cell is 3 years in air, all other cells 2 years in air             

PUMP
Flow: 300ml / min typically
Flow-fail point: Flow rate less than 75ml/min or vacuum greater than 350mbar
Maximum vacuum restart: -375 mbar

COMMUNICATIONS
Output channels:
Up to six analogue 4-20mA output channels that are user configurable for current sink or source inputs plus Modbus RTU digital output.
Optional Profibus module
Optional Profinet module
Alarm notifications:
1 x fault relay
7 x user-configrable alarms that can trigger a relay when above or below a set value.
In addition, one can be used to indicate to the operator when the catchpot is full and requires emptying.
Relay outputs:
Single pole changeover 6A 24Vdc relay volt free

ENVIRONMENT CONDITIONS
Operating pressures: -350 mbar to +350 mbar
IP rating: IP65
Humidity: 0-95% non-condensing humidity

PHYSICAL
Weight: 36.5kg
Size: 650 x 600 x 210mm (with supplied wall mounting brackets)
Enclosure: Stainless steel, 600 x 600 x 210mm, IP65 rated
Operation keys: Alpha-numeric keypad with ‘tactile’ membrane
Display: Ultra-clear high resolution 4.3” full colour TFT
Moisture removal filters: User replaceable microfibre filter and 2.0μm ptfe water traps
Heater option: Optional 100W mains powered ATEX certified heater for 110V or 230V mains supply

CERTIFICATION RATING
ISO17025: Calibrated under UKAS accreditation (certificate number 4533)
ATEX / IECEx marking: II 3G Ex nA nC IIA T1 Gc (-20°C ≤ Ta ≤ +50°C)
BS EN 61010-1:2010: Safety requirements for electrical equipment for measurement, control, and laboratory use
BS EN 50270:2006: Electromagnetic compatibility - electrical apparatus for the detection and measurement

•  Agricultural waste
•  Biogas upgrading
•  Landfill gas monitoring
•  Farm waste AD (small scale)
•  Gas flaring
•  Mixed food waste AD
•  Sewage/waste water treatment AD