AR Series Model

     AR series Roots blowers are optimized from the formal introduced R series standard Roots blowers. With a variety of seal structure,they can deliver various mediums of gases, and boost gases, so to meet various industry requirements.   
    The series blower are widely used in many kinds of industries,such as pertoleum,metallurgy,power,mining,building material,chemical,fertilizer,paper-making,port,light industry,food,environmaent protection,aquatic farming,city gas and medicine,etc.

     Volume：0.76～1200m³/min  Pressure：9.8~98kPa

Volume
    The volume Qs is the inlet volume at the standard inlet conditions(temperature 20℃,absolute pressure 101.325kPa,relative humidity 50%)when medium is the air. It should be converted at non-standard inlet conditions.
Conversion of volume
    When the inlet volume is shown with the volume Qn at reference conditions(temperature 0℃,absolute pressure 101.325kPa), it should be converted to the volume Qs at the standard inlet Conditions by means of the following formula,then to search performance table.(Usually don't consider humidity)
     Qs=1.0733Qn
When there is much difference between the inlet temperature and 20℃,or if the molecular weight of intake gases obviously deviates from the molecular weight of air 9,the practical inlet volume Qs is caluclated by means of the following fomula:
Qb=(Qth-Qsa)×[(273+ts)/(273+20)×29/M]^1/2
Qs=Qth-Qb
in formula:Qb-internal leakage(m³/min)when inlet temperature is ts℃,and the molecular weight is M.
Qth-Theoretical volume(m³/min),which is searched from performance table after primary type selection according to inlet volume at pressure rise of request.
Qsa-Practical volume(m³/min)at standard inlet conditions ,i.e.the volume shown at performance table after primary type selection.
Conversion for the unit of pressure
 9.8kPa=0.1kgf/cm²=1000mmH2O=73.5mmHg=98mbar=0.0967atm=1.4225psi
Conversion for the unit of volume
1m³/min=60m³/h=16.667  L/S=35.714CFM
Performance data listed in the table is suitable for the medium of the air;the volume should be converted at other mediums or different inlet conditions.

Forced delivered volume is constant as pressure changes,and gases delivered free of  oil contamination.
Cycloidal impeller and the latest aerodynamics theory,high efficiency and energy saving.
Rotors being of high precision dynamic balance and low vibration.
Fine material selection for parts,high precision gears , high reliability of the blower,long service live.
Special soundproof design,low noise.
Simple structure,fine appearance,small space,light weight,convenient for operation and maintenance.
Varieties of products,concentrated performance points,suitable for selection fo blowers and energy saving.

Please give a description about mdeium, inlet conditions, inlet volume, discharge pressure and ambient conditions when you order, because that data on the performance sheet are based on the stipulated inlet and outlet conditions.
If you have special demands, such as capacity adjustment, installation outline, seals, control, and explosion protection, etc, please make remarks.