Nitto TGF450 Series User Manual
                                               | |
Contents
| 
User’s Manual Rev1.0Date:15/07/2015 User’s Manual6/471 GeneralEvery TGF450 thermal mass flowmeter will be carefully inspected before delivered to users.Please carefully check if there is any damage on the package and product when you received themPlease check if the package contains all the accessories according to 1.2 or your purchase order.Please make sure the person in charge of this device has carefully read this manual and understand itsdescriptions.1.1 Model Number and General SpecificationPlease check if the model number and specifications onthe name plate match your requirement on thepurchase order.Please kindly record the model number and instrument ID code, which will be required if you need andservice or support from us.1.2 Packing ListWhen you recived the package, please check if it contains the items as below:TGF450 thermal mass flowmeter x1User’s manual x1Calibration certificate x1Quality certificate x1Cable (For remote type only, length according to customer’s requirement)Counter flanges (For wafer type, or for flanged type when customer requied so)Screws and bolt (For wafer type, or for flanged type when customer requied so)1.3 StorageIf the product needs to be stored for a long period before use, please be awared of below:(1) The product should be kept in the origin package and same as it was when received.(2) Please store the product in a proper location according to the requirements below:Not in a uncovered field.Not in a location where could have great vibration.Please keep the enclosure of the meter closed.The ambient temperature, atmospheric pressure and humidity should be:Temperature: -20~+60℃ ；RH： 5%~99% ；Pressure： 86~106Kpa1.4 Measuring principleTGF450 Series Thermal Mass Flowmeter measures gas mass flow base on thermal diffusion theory and thermalprinciple of Newton , It have two RTD sensor (ref to picture 1.2) located in the flow. One RTD is heated to T1 by aheating power rate of P, the other is not heated but to measure the medium temperature T2. So there is atemperature difference TD=T1-T2 . TD reach max when mass flow is 0. When the mass flow Q increases, the heaton T1 is taken away so the T1 decline and the TD become smaller. So there is a certain relationship betweenheating power rate P, difference of temperature TD and mass flow Q as below:P/ T D = K1 + K2 F(Q)K3 |
Related manuals for Nitto TGF450 Series
This manual is suitable for:
manualsdatabase
Your AI-powered manual search engine