Rotacinių dujų skaitiklių alyva

Rotacinių dujų skaitiklių alyva

Rūšis

Klampumas prie 40ºC, mm2 /s

Tankis, prie 15ºC, kg/m3

Pliūpsnio temp. PMCC, ºC

Stingimo temp. ºC,

Panaudojimas, savybės

 

Molyduval

Tantalus ME 10 P

 

 

10

 

 

860

 

 

165

 

 

-15

 

Speciali ypač žemo klampumo pusiau sintetinė reduktorinė alyva greitaeigėms aukštų sūkių pavaroms ir staklių sūkliams (špindeliams).

Puiki atspara putojimui net prie aukščiausių apsūkų.

Ekstremalių apkrovų (EP) pernešimo geba su minimalia tepimo plėvele.

 

CLP 10 specifikacija

 

Keičia seną špindelinę Morlina Oil 10

Rotacinių skaitiklių tepalas

Rotary Displacement meter oil

Diaphragm meters

Diaphragm meters have four measurement chambers. Two by two, the measurement chambers form a section which is separated by using a deformable wall, the diaphragm. Both diaphragms are connected to each other and they lead, via a rotating piston, the counter.

By knowing beforehand the volume of each chamber, we can measure directly the gas volume that passes through the diaphragm meter.The main reasons for the increase of the measurement error of diaphragm meters are the leakage both at the moving parts and at the diaphragm leakage. This leakage usually influences the low flow range and results in a lower reading.

Diaphragm meters are mainly installed in domestic applications because they have especially large rangeability (Qmax/Qmin = 160).

Diaphragm meters, can be equipped with pulse generators in order to transmit the meter’s reading.

Rotary Displacement meters

Rotary displacement meters consist of two rotating impellers that move opposite to one another. The impellers are placed inside a housing. The cross section of the impellers, vertically

Cross-Section of a Rotary Displacement Meter

positioned to the rotating axis, is formed in such a way, that the gap between the impellers and the housing is very small, regardless of the impellers’ position.

The impellers are placed in such a way, that they don’t touch each other during the rotation. The gas volume can be measured directly since the volume of each measurement chamber is well known.Rotary displacement meters can also achieve high rangeabilities like Qmax/Qmin = 250, but the small gaps lead to high sensitivity to dust particles. In order to avoid the damage on the impellers, since they are manufactured from light metals, special care must be given to proper installation and precautions to be taken, such as filters placed upstream of the meters.

The error curve of a rotary displacement meter is determined by the losses between the impellers as well as between the impellers and the housing.

During the measurement of the gas volume, the gas runs through the meter permanently. This results in pulsation, which through inappropriate pipeline arrangement, can lead to peaks and cause significant measurement errors. In order to avoid the influence of the error curve due to pulsations during the calibration, silencers are often used as well as appropriate piping upstream of the meter.