This standard specifies the structural type, parameters and dimensions, requirements, test methods, inspection rules, marking, packaging, transportation and storage of tractor hour sheets. This standard applies to instruments installed on tractors to record working hours (hereinafter referred to as instruments).
JB/T 11975-2014 Referenced Document
GB 4208-2008 Degrees of protection provided by enclosure(IP code)
GB/T 2423.16 Environmental testing—Part 2: Test methods—Test J and guidance: Mould growth*, 2022-07-11 Update
GB/T 2423.17 Environmental testing for electric and electronic products.Part 2:Test method.Test Ka:Salt mist
GB/T 2423.4 Environmental testing for electrical and electronic products - Part 2: Test method Test Db alternating damp heat (12h + 12h cycle)
GB/T 2828.1-2012 Inspection procedure by count sampling part 1: Lot by lot inspection sampling plan retrieved by acceptance quality limit (AQL)
JB/T 9832.2 Tractors and machinery for agriculture and forestry.Paints adherence performance.Cross-cut test