The DRK812H water permeability tester is used to measure the water permeability of medical protective clothing and compact fabrics, such as canvas, tarpaulin, tarpaulin, tent cloth, and rainproof clothing cloth. Standards Compliant: GB 19082-2009 Technical requirements for disposable medical protective clothing 5.4.1 Water impermeability; GB/T 4744-1997 Textile fabrics_Determination of impermeability hydrostatic pressure test; GB/T 4744-2013 Textile Waterproof Performance Testing and Evaluation Hydrostatic Pressure Method; AATCC127 and other standards. Technical Parameter: 1. Display and control: color touch screen display and operation, parallel metal button operation; 2. Sample clamping method: pneumatic; 3. Measuring range: 0～300kPa (30mH2O); 0～50kPa (5mH2O) optional; 4. Resolution 0.01kPa (1mmH2O); 5. Measurement accuracy: ≤±0.5% F•S; 6. Test times: ≤20 batches*30 times, select the delete function; 7. Test method: pressurization method, constant pressure method, flexure method, permeable method; 8. Holding time of constant pressure method: 0～99999.9S; timing accuracy: ±0.1S; 9. Sample holder area: 100cm²; 10. Timing range of total test time: 0～9999999.9, timing accuracy: ±0.1S; 11. Pressurizing speed: (0.5～100) kPa/min (50～10000mmH2O/min) digital setting; 12. With printing interface; 13. Maximum flow: ≤200ml/min; 14. Power supply: AC220V, 50Hz, 250W; 15. Overall dimensions (L×W×H): 380×480×460mm (L×W×H); 16. Weight: about 25kg;