Use the graph or tables below to determine the range of air leakage you can test with the Rhino using our standard orifice plates.

Note that the data is based on laboratory tests with short lengths of hard pipe attached to the duct leakage tester. Actual field performance will likely result in reduced performance due to: (1) amount of flexible duct used; (2) number of bends in flexible duct; (3) size of duct system; (4) line voltage. To account for flexible duct and 90 degree bends, use our program that takes these in-line losses into account.

25 mm Orifice Plate

System Static Pressure (Pa)Min Leakage (m^3/hr)Max Leakage with Panther Tester (m^3/hr)
5001575
10001570
15001565
20001560
25001551
30001542
35001532
40001522

50 mm Orifice Plate

System Static Pressure (Pa)Min Leakage (m^3/hr)Max Leakage with Rhino Tester (m^3/hr)
50063315
100063280
150063265
200063240
250063205
300063165
350063125
40006395

75 mm Orifice Plate

System Static Pressure (pa)Min Leakage (m^3/hr)Max Leakage with Rhino Tester (m^3/hr)
500145700
1000145635
1500145595
2000145525
2500145460
3000145375
3500145290
4000145205

100 mm Orifice Plate

System Static Pressure (Pa)Min Leakage (m^3/hr)Max Leakage with Rhino Tester (m^3/hr)
5002701335
10002701225
15002701120
20002701000
2500270875
3000270715
3500270550
4000270380

125 mm Orifice Plate

System Static Pressure (Pa)Min Leakage (m^3/hr)Max Leakage with Rhino Tester (m^3/hr)
5004402015
10004401870
15004401715
20004401540
25004401370
30004401120
3500440865
4000440620

150 mm Orifice Plate

System Static Pressure (Pa)Min Leakage (m^3/hr)Max Leakage with Rhino Tester (m^3/hr)
5007752635
10007752415
15007752260
20007752015
25007751760
30007751440
35007751120
4000775815

Min Leakage is the recommended minimum flow rate based on a 125 Pa pressure drop across the orifice plate.