lindab | we simplify construction Flow measuring unit - circular FRU Dimension h nom L Ød nom Ød nom L 100 300 Description 125 300 160 300 FRU is a measuring unit with a measuring cross, which is 200 300 used for measuring volume flow in circular ducts. 250 400 315 400 FRU is equipped with Belimo VRD3, providing an output 400 400 signal that is proportional to the volume flow. FRU can be 500 510 used to monitor the actual airflow or can be used to control 630 560 a volume flow regulator. FRU is equipped with Lindab Safe in the front for connec- tion to the duct and a female coupling in the back, and is ready for insulation up to 50 mm. FRU can be installed in any position without requiring adjustment. To avoid contamination of the measuring cross, FRU should only be used for clean air. FRU needs a certain distance of straight duct before the unit and this has to be observed to obtain a stable and accurate airflow regulation. • Requires minimal initial pressure (Less than 20 Pa at V nom ). • Output signal indicates actual volume flow. h nom 202 227 262 302 352 417 504 604 734 Order code Product Type FRU Dimension Ød 100 - 630 Example: FRU - 250 FRU aaa Lindab reserves the right to make changes without prior notice 1 2021-01-06
Download PDF file