Instrument Support Level 1
Aeris MIRA CH4/C2H6
tbd
£45,000
37.3 cm W x 30.2 cm H x 18.6 cm D / 6.8 kg
£20.00
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Aeris MIRA Ultra CH4/C2H6

The MIRA Ultraportable CH4/C2H6 utilises Mid-Infrared Direct Laser Absorption Spectroscopy to provide precise, real-time measurement of methane (CH4) and ethane (C2H6) in air across a wide range of amount fractions: 10 ppb to 6,000 ppm for CH4 and 1 ppb to 1,000 ppm for C2H6. A built-in battery makes it an ideal instrument to use in the field to detect sources of methane and ethane, for example, from gas leaks.
Manufacturers quoted sensitivities at 1 Hz and 5 Hz are:
- Sensitivity (1σ) at 1 Hz CH4: <2 ppb/s / C2H6: <500 ppt/s
- Sensitivity (1σ) at 5 Hz CH4: <900 ppt/s / C2H6: <230 ppt/s
See the manufacturers instrument brochure here.
The instrument is housed in a ruggedised case with an in-built battery that can power the instrument for up to 3 hours in the field. The live data can be accessed using a tablet which connects to the analysers Wi-Fi using VPN. The analyser also comes in with an inbuilt GPS module to enable accurate position data for the observations.
The instrument can be calibrated using compressed gas mixtures produced at the AMOF Cylinder Filling Facility (CFF) based at the University of East Anglia. The CH4 and C2H6 amount fractions in these cylinders has been determined by the CFF and the COZI-VOC facility, respectively.
Consumables
The user will need to supply (otherwise will be charged for):
- Zero air
- Teflon filters
Costs
Instrument Insurance
This system must be insured by the user for £45K and covers loss, theft or damage to the instrument: damage is that over and above general wear and tear. The system has been designed to be rugged and autonomous. Even so, the end-user must respect the fact that the system is a precision optical instrument that must be treated with great care.
The user is responsible for the instrument from the time it leaves the AMOF to the time it is returned and signed off as in an acceptable operating condition by the IS: this will be done as soon as is possible on its return.
Public Liability Insurance
The AMOF is not liable for any damage or injury arising from the deployment or operation of this instrument when unattended by the IS.
Shipping Expenses
The user is liable for all costs arising from the shipping of the instrument both to and from a deployment.
IS T&S
The user is responsible for coving the travel and subsistence expenses of the IS while attending the instrument.
Shipping
The system when packed ready for shipping consists of a single case:
- Shipping dimensions (in case):
74 cm x 50.7 cm x 78 cm (91 cm with castors)
Shipping weight (in case): tbd
Although the analyser has active temperature control, operation in an air-conditioned laboratory will improve performance It is advisable to use the shortest inlet line possible with a large flow rate to limit residence times.
Manual handling
For the safest operation, leave the analyser in the shipping case during operation.
If needed,
- A procedure appropriate to lifting a heavy object should be used when lifting the analyzer. This procedure consists of bending at the knees while keeping your back straight and upright.
- The analyzer should be grasped at the bottom, in the front and at the rear of the unit.
- Do not attempt to lift the analyzer by the cover or other external fittings.
- While one person may lift the unit, it is desirable to have two persons lifting,
- one by grasping the bottom in the front and the other by grasping the bottom in the rear.
- Cables and sample tubing kept away from pathways; held overhead height if necessary.
- Walkways kept free of clutter and access to exit kept clear.
Laser safety
This equipment is classified as a Class 1 laser product with an embedded 3B laser in accordance with EN 60825-1:2014. Do not to open the enclosure where this label is placed; there are no user serviceable parts inside.
Electric safety
Attach all cables to analyser before switching on at the mains.
All equipment electrical safety tested.
Under no circumstances should the user remove the out casing of the analyser whilst it is connected to a mains supply.
Attended operation
There is no requirement for the system to be attended during operation from a safety standpoint.
Power Requirements
Voltage / Current 12-15 VDC 4.2 A, 100-240 VAC 0.50 A (50-60 Hz)
Power
50 W at start-up, 27 W at steady state
Operation temperature
Operating: 10 °C to 35 °C (50 °F to 95 °F)
Field Data
The instrument produces a range of out files, and all are text format.
The user can download (but not delete) this data from the instrument, but it should be noted that this data will not have been quality controlled.
Archive data
Data is provided in NetCDF files following the AMOF data standard
Instrument name is: tbd
The data product(s) associated with this instrument:
- ch4-concentration
- c2h6-concentration