Mobile measurement device for efficiency determination of heat recovery system in plant, has grid including releasable attachment members e.g. hook and loop fastener, where measuring points are provided at frame of grid

摘要

The device has a measurement grid (1) arranged in an air duct for including releasable attachment members e.g. Velcro(RTM: Hook and loop fastener). Detectable measuring points (4) are provided at a frame (2) of the measurement grid, where dimension of the measurement grid is variable. The measuring points are connected with an electronic part connected at or near the measurement grid, where the electronic part is arranged with an evaluating device. The evaluating device is arranged outside the air duct. The measuring points detect temperature, moisture, flow rate and/or pressure of air flow.