bubbler system for liquid level measurement

{"cid":"91202321","title":"Dwyer Series 2000 Magnehelic Dwyer 2000-00D Magnehelic Differential Pressure Gauge 0-0.25 In H2O, 2% Acc","imgUrl":"https:\/\/img.chinax.com\/nimg\/35\/5a\/e70f35676342d454d17a916f84aa-200x200-1.jpg","attrs":{"Price":"USD$90\/PC","Brand Name":"Dwyer","Model Number":"2000-00D","Minimum Order Quantity":"1","Delivery Time":"4-6 weeks","Certification":"CCC,CE","Place of Origin":"usa","Payment Terms":"L\/C, D\/A, D\/P, T\/T, Western Union, MoneyGram","Supply Ability":"100","Packaging Details":"Original","Gauge Range":"0-0.25 In. H2O","Range, Pa or kPa":"0 to 62 Pa","Service":"Air and non-combustible, compatible gases","Accuracy":"\u00b12% of FS","Primary Type":"Differential Pressure Gauge","Temperature Limits":"20 to 140\u00b0F","Size":"4\" (101.6 mm) Diameter Dial Face","Process Connections":"1\/8\" Female NPT duplicate high and low pressure taps - one pair side and one pair back"}}

{"cid":"91199635","title":"1\/8\" Micro Differential Pressure Gauge For Air Compressor","imgUrl":"https:\/\/img.chinax.com\/nimg\/f6\/06\/8431694af045ca917246969111c4-200x200-1.jpg","attrs":{"Price":"USD18.0 PER PC","Brand Name":"YunYi","Model Number":"YD2000","Minimum Order Quantity":"1 PC","Delivery Time":"7days","Place of Origin":"China","Payment Terms":"T\/T, Western Union","Supply Ability":"1000 Unit\/Units per Week differential pressure gauge","Packaging Details":"Micro air compressor differential pressure gauge Unit:35*15*14cm1.7kg One box45*35*35cm :6 pieces 11.5kg","Pressure range":"Request","Accuracy":"2%","Connection":"1\/8\"","Type":"Measuring Instruments","Temperature range":"20- 140 \u00b0F(-6.67 to 60\u00b0C)","Size":"4\" (100mm)"}}