Operation with OxiTop
®
-IDS measuring heads Multi 3630/3620 IDS
20 ba77045d02 03/2020
Risks during
determination of
biogas (OxiTop
®
-IDS
/B measuring head)
CAUTION
The pressure sensor in the OxiTop
®
-IDS measuring head may be
destroyed by a pressure of 2000 hPa or higher.
Caution
During the anaerobic degradation of organic material in sealed
equipment, high pressure can develop due to biogas (main compo-
nents: methane and carbon dioxide).
The following hazards can occur:
Risk of bursting due to the high pressure and risk of injury
caused by flying glass splinters.
Risk of explosion due to development of flammable gas
mixtures if high concentrations of methane escape.
Take the following precautionary measures for safe operation:
Only use WTW measurement bottles of the MF/... series,
which are especially designed for biogas determination
(see WTW catalog).
Only use measurement bottles that are not damaged (e.g.
are not cracked, chipped or scratched).
Determine the reaction conditions (temperature, quantity)
under which no dangerous excess pressure develops by
means of monitored preliminary tests (e.g. with diluted ma-
terial).
For unmonitored measurements, include a buffer for the de-
veloping pressure, as the composition of biological materi-
al can considerably vary. Therefore, a pressure that is
higher than planned on can develop.
Only use the corrosion resistant OxiTop
®
-IDS /B measuring
heads. They were designed especially for biogas applica-
tions.
OxiTop
®
-IDS /B measuring heads display measured values
in the range 500 ... 1500 hPa. OFL (measuring range ex-
ceeded) is displayed if the pressure is higher.
Caution
If an OxiTop
®
-IDS /B measuring head displays OFL (measuring
range exceeded) despite all precautionary measures, the actual
pressure can already be considerably higher than 1500 hPa.
Terminate the measurement immediately:
Wear protective equipment (face shield, protective clothing,
gloves).
Wrap the bottle in a thick towel.
Vent the bottle.
To Next Page
Loading...
Need help?
General
