Methane, Hydrogen Sulphide and Oxygen deficiency are typical target gases in sewage treatment facilities. Arjay offers explosion sensors for all of these gases that can be monitored by a single central panel.
Documentation
while ( have_rows( 'documents' ) ) :
the_row();
$document = get_sub_field( 'document' );
$image = get_sub_field( 'image' );
printf (
'',
$document['url'],
$image['sizes']['medium'],
$document['title']
);
endwhile;
?>