The volume measurement with ultrasonic transit time flowmeters is today one of the most widespread

The new technology flowmeters used in industrial applications rechargable fan in 1960 and 1970 Tenth and differential rechargable fan pressure flowmeters were used in the early 1900s and the turbine in early 1800.
General characteristic is the high maintenance requirements, have great potential in precision measurement, manufacturers do not invest as thyself technologies although still find use in many applications.
An EMF consisting of a tube with a non-ferromagnetic electrically insulated surface and magnetic coils and electrodes which are positioned properly, the tube diametrically and in contact with the liquid to be measured through the tube walls.
According to Faraday's law the induced voltage Ui of the measured liquid is proportional to the flow velocity v of the liquid being measured, where B is the induction D and the internal diameter of the tube.
Meter pipe, electrodes, the coating material of the tube amplifier / converter.
The most common is to chrisei from anoxeidoto steel CrNi alloys and Hastelloy, platinum, tantalum, rechargable fan titanium rechargable fan zirconium.I correct choice of material is not related only to the corrosion resistance but Affects and proper operation of the EM flowmeter.
Convert the calibrated digital values into appropriate signals suitable for industrial processing as 4 ... 20 mA, pulses rechargable fan and digital signals are transferred to computers via special-protocol as Hart, Profibus PA, DP, Fieldbus, RS 485, etc.
Allows the use of materials with high solids content without rechargable fan fear of blocking the tube (no moving parts) rechargable fan
High accuracy even in difficult conditions due to the linear operating principle, ie the linear relationship flow rate and voltage allows rechargable fan accurate rechargable fan conversion to signal flow.
Food: milk, cream, liquid cheese, egg, cream, ketchup, etc. Yurt
The most classic but implementation remains the EM flowmeters water and gaining more territory to which in recent years has been invaluable and the management of the concern of all peoples. rechargable fan
The most synithismena materials liner (internal insulation of the measuring tube) is: hard rubber, soft rubber, rechargable fan fluorine - ba sed plastics such as Teflon PTFE or Teflon rechargable fan PFA, and ETFE (TEFZEL ).
For this reason, in collaboration with Institutes hygiene such as EHEDG, have been found suitable ways to connect and .The insulation material (liner) which contacted the food or drug or drink should not give any impurity and is compatible with organizations eg FDA - approved
The main head to remote systems has no moving parts, is compact and can withstand high temperatures, vibrations pressure surges, ambient humidity, allowing adequate protection even fully immersed under water (e.g. into wells)
The transit time flowmeters rechargable fan have emitters and receivers yperichon.Oi emitters send an ultrasonic signal from one side of the tube to the other and antistrofa.Otan an ultrasonic signal travels in the direction of flow travels faster than antistrofa.To flowmeter counts both signal transit times.
Respectively flowmeters technology Doppler ultrasound signal .However rechargable fan send the signal reflected on the moving rechargable fan particles instead of the return signal from an emitter of the opposite plefra.Ta moving particles move at the same speed refstou.Kathos signal passes through the fluid frequency of varies the average speed refstou.Enas receiver detects the reflected signal to measure the frequency and the meter calculates the flow from the difference of the transmitted and reflected sychnotitas.Aparaititi is the presence of particulates in the fluid to be reflected signal on this and Doppler method recommended in dirty fluids.
The volume measurement with ultrasonic transit time flowmeters is today one of the most widespread methods for various ylika.Einai rechargable fan suitable for cryogenic applications from -200 C, and hot liquids, gases and steam up to 500 C and pressures up to 1500 ba r, also for custody transfer applications except water (using EM).
Special cases are certified for custody transfer applications for volumetric gas (from domestic to large), like other fuels with accuracies of less than 0.2% of the measured quantity. In these cases suitable are multiple pairs (sensory) ie 3, 4 even 5 sets just like Mr.