Technical Data (Provisional)

MTL Gas Analysers & Systems

July 2014
EPS GIR6000 1

GIR6000 Biogas Analyser
Multiparameter analysers for
biogas applications
•t
•t
t
•t
•t
t
•t
•t
•t
•t
•t
t
•t

Intelligent modular sensors
Measurement of up to 6 gases
(incl. CH4, CO2, H2S & O2)
Customised sensor options
Intelligent sensors provide predictive
diagnostic data
Pre-calibrated, field replaceable sensor modules
Robust, weatherproof design to IP65
Suitable for ATEX Zone 2 mounting
Digital Communication options
Future upgrade potential by
adding/changing sensors
Sensor health and process event logging

Typical Applications include:
•t Anaerobic Digester gas analysis
•tGas-to-grid
•t Flare stack monitoring

•t CHP engine protection and efficiency
•t CDM verification
•t Landfill gas monitoring

The GIR6000 series Biogas analyser is designed specifically to
address the needs of measurement in biogas applications. Reliable
and accurate measurement data is crucial to help control and optimise
the production process.

requirements. Replacement is quick and done on-site, without
special tools or training and the modules are pre-configured to allow
“plug-and-play” installation. All modules are replaceable in the field
for minimum downtime.

Biogas consists of a mixture of Methane (CH4) and Carbon Dioxide
(CO2). Oxygen (O2) and Hydrogen Sulphide (H2S) are usually present
which have implications for gas quality, efficiency and safety.
Dedicated modules for up to 6 gases are available for use in Zone
2 hazardous area applications. Other trace elements are also often
present in low levels and may need measurement.

Intuitive user interface features a large bright colour display. Simple
to use menu’s allow the user to configure and interrogate the system
locally. The display indicates live gas composition values and sensor
status in addition to important error or alarm messages. A rugged and
robust keypad allows configuration data entry. Password and hardware
protection ensures that unauthorised changes cannot be made to the
analyser configuration.

Methane is the desired component in fuel gas for CHP engines and
gas-to-grid applications. MTL use long life NDIR sensors to measure
Methane and Carbon Dioxide. These sensors are temperature
compensated and designed to withstand the damp, corrosive nature
of Biogas.
Hydrogen Sulphide is present in digester gas in varying amounts
depending on the waste composition. Hydrogen Sulphide is highly toxic
and can be extremely corrosive to engine generator sets. Accurate
monitoring helps control scrubbing systems and prevent costly
damage. MTL has developed a system which allows for continuous
measurement of H2S, while still maximising sensor lifetime.
Modular sensor design is an innovative feature of the MTL
GIR6000. Self-diagnostics on each sensor provides important
preventative data, minimising regular service and maintenance

Sample conditioning is important in the variable conditions
encountered in this application. MTL GIR6000 has integral sample
filters and pump, as standard, which are fitted as field-replaceable
modules. A low-flow alarm ensures sample flow integrity. The
enclosure contains a heater to avoid condensation forming in the
analyser. An external coalescing filter option to further remove
moisture can also be offered. MTL are ready to recommend complete
systems on receipt of full gas stream specifications.
These are hazardous area applications by their very nature. All
GIR6000 versions are designed for use in Zone 2 hazardous areas
according to the Industry Code of Practice ESA ICoP Edition 2, a
decision endorsed by the Health & Safety Executive in the UK.

Measurement Technology Limited,
Great Marlings, Butterfield, Luton
Beds, LU2 8DL, UK.
Tel: + 44 (0)1582 435600 Fax: + 44 (0)1582 422283
E-mail: mtlgas@eaton.com
© 2014 MTL
All Rights Reserved
Publication No. EPS GIR6000 1 110714
July 2014

1