An apparatus and method for testing gas permeability in concrete are provided. The apparatus is used for testing gas permeability of a concrete test sample, and includes a gas supply apparatus, an instrument body and a gas flow meter. The instrument body includes a frame body. A gas inlet ring, a gas outlet ring and a connection plate are successively arranged on the frame body from inside to outside. An input end of the gas inlet ring is connected with the gas supply apparatus, and an output end is connected with an input end of the gas outlet ring through the concrete test sample. An output end of the gas outlet ring is connected with the gas flow meter. The connection plate is connected with the concrete test sample.

An apparatus and method for testing gas permeability in concrete are provided. The apparatus is used for testing gas permeability of a concrete test sample, and includes a gas supply apparatus, an instrument body and a gas flow meter. The instrument body includes a frame body. A gas inlet ring, a gas outlet ring and a connection plate are successively arranged on the frame body from inside to outside. An input end of the gas inlet ring is connected with the gas supply apparatus, and an output end is connected with an input end of the gas outlet ring through the concrete test sample. An output end of the gas outlet ring is connected with the gas flow meter. The connection plate is connected with the concrete test sample.

A heat cover for a particulate matter sensor includes an aluminum foil external layer and an internal layer made from a composition including SiO.sub.2 of between 52-60%, CaO of between 16-25%, and Al.sub.2O.sub.2 of between 12-16%. The heat cover is formed as a sleeve structure and includes an open end for receiving the particulate matter sensor.

A heat cover for a particulate matter sensor includes an aluminum foil external layer and an internal layer made from a composition including SiO.sub.2 of between 52-60%, CaO of between 16-25%, and Al.sub.2O.sub.2 of between 12-16%. The heat cover is formed as a sleeve structure and includes an open end for receiving the particulate matter sensor.

A pipeline contaminant monitoring apparatus that includes a filter housing and probe configured to isokinetically sample a portion of a pipeline gas stream. The filter housing has a filter configured to trap solid contaminants within the gas stream. A first pressure sensor is located upstream of the filter and a second pressure sensor is located downstream of the filter. A processor is coupled to the first and second pressure sensors. The processor is configured to determine a solid contaminant concentration level in the gas stream based on a rate of change of the pressure drop sensed across the filter.

A pipeline contaminant monitoring apparatus that includes a filter housing and probe configured to isokinetically sample a portion of a pipeline gas stream. The filter housing has a filter configured to trap solid contaminants within the gas stream. A first pressure sensor is located upstream of the filter and a second pressure sensor is located downstream of the filter. A processor is coupled to the first and second pressure sensors. The processor is configured to determine a solid contaminant concentration level in the gas stream based on a rate of change of the pressure drop sensed across the filter.

A frozen composition based on yoghurt and fruit, containing: one or more fruits in pureed and/or juice form, representing from 30 to 49% or from 49.1 to 220% of the total weight of the composition, as fruit equivalent, from 51 to 70% by weight of yoghurt, and optionally one or more added sugars and/or other ingredients. A process for the manufacture of this composition, its use for the manufacture of a frozen dessert, and a process for the manufacture of the dessert, by grinding and optionally aerating the composition are also disclosed.

A frozen composition based on yoghurt and fruit, containing: one or more fruits in pureed and/or juice form, representing from 30 to 49% or from 49.1 to 220% of the total weight of the composition, as fruit equivalent, from 51 to 70% by weight of yoghurt, and optionally one or more added sugars and/or other ingredients. A process for the manufacture of this composition, its use for the manufacture of a frozen dessert, and a process for the manufacture of the dessert, by grinding and optionally aerating the composition are also disclosed.

The present invention provides a water tension sensor with a non-sintered core that allows batches of similar and standard sensors to be manufactured in a simple manner, for operation with air and with an air flow outlet, which sensor can be used to read water tension and trigger dripping. The sensor according to the invention is ideal for manually reading soil water tension and for automating irrigation systems based on a static pressure or gas propulsion mechanism.

The present invention provides a water tension sensor with a non-sintered core that allows batches of similar and standard sensors to be manufactured in a simple manner, for operation with air and with an air flow outlet, which sensor can be used to read water tension and trigger dripping. The sensor according to the invention is ideal for manually reading soil water tension and for automating irrigation systems based on a static pressure or gas propulsion mechanism.