how to install oil catch tank

{"cid":"91202468","title":"Hygienic SF Hydraulic Tank Sight Glass \/ Hydraulic Tank Level Gauge 381mm","imgUrl":"https:\/\/img.chinax.com\/nimg\/e7\/73\/3f00faa8ddf9171ef00014a36d42-200x200-1.jpg","attrs":{"Price":"USD10.00-USD50.00","Brand Name":"REIJAY","Model Number":"SF","Minimum Order Quantity":"1 set","Delivery Time":"7 days","Certification":"ISO CE","Place of Origin":"China","Payment Terms":"T\/T, D\/P, Western Union","Supply Ability":"500 sets\/ month","Packaging Details":"Yes","Operating temperature":"-20\u2103~+80\u2103","Applicable medium":"DIN","Feature":"No Maintenance Required","Advantage":"Safe and Environmentally","Specification":"Safe to use","Customize":"Support","Name":"Hydraulic Oil Level Gauge","Oem":"Yes","Application":"Hygienic Liquid Storage Container"}}