Abstract: An air quality monitor includes a housing defining an inlet and an outlet, a fan, and one or more sensors disposed in the housing. The fan is configured to transport air along a nonlinear flow path from the inlet of the housing to the outlet of the housing. The one or more sensors are arranged along the nonlinear flow path and include a first sensor positioned upstream of the fan and a second sensor positioned downstream of the fan. The first sensor is configured to sense a first parameter of the air and the second sensor is configured to sense a second parameter of the air.

Abstract: A pressure independent control valve (10) for controlling the flow of a liquid medium includes a valve body having a side wall defining a conduit that extends from an inlet to an outlet. The side wall of the valve body include a first side opening (23) and a second side opening (24) extending into the conduit. A first insert element (21) is placed into the first side opening (23) and a second insert element (22) is placed into the second side opening (24). At least part of a pressure control device (18) is accommodated by said first insert element (21), and at least part of a flow rate adjustment device (19) is accommodated by said second insert element (22).

Abstract: A pressure independent control valve (10) for controlling the flow of a liquid medium includes a valve body having a side wall defining a conduit that extends from an inlet to an outlet. The side wall of the valve body include a first side opening (23) and a second side opening (24) extending into the conduit. A first insert element (21) is placed into the first side opening (23) and a second insert element (22) is placed into the second side opening (24). At least part of a pressure control device (18) is accommodated by said first insert element (21), and at least part of a flow rate adjustment device (19) is accommodated by said second insert element (22).