Patent ID: 11927618
Assignee: EATON INTELLIGENT POWER LIMITED
Field: Measurement (Instruments)
Classification: CPC G  H | IPC G

Claim 1:
2. The method as claimed in claim 1, wherein the total lifetime LTtotal of the gas filling is calculated by use of the formulas:, Δ
   ⁢
   
    p
    
     p
     ⁢
     t
     ⁢
     u
    
   
  
  =
  
   
    
     p
     
      h
      ⁢
      i
      ⁢
      g
      ⁢
      h
     
    
    -
    
     p
     
      l
      ⁢
      o
      ⁢
      w
     
    
   
   
    L
    ⁢
    
     T
     nominal, L
   ⁢
   
    T
    nominal
   
  
  =
  
   
    
     p
     
      h
      ⁢
      i
      ⁢
      g
      ⁢
      h
     
    
    -
    
     p
     
      l
      ⁢
      o
      ⁢
      w
     
    
   
   
    Δ
    ⁢
    
     p
     
      p
      ⁢
      t
      ⁢
      u
     
    
   
  
 

 
  
   LT
   
    t
    ⁢
    o
    ⁢
    t
    ⁢
    a
    ⁢
    l
   
  
  =
  
   
    Δ
    ⁢
    
     t
     ·
     
      
       Δ
       ⁢
       
        p
        
         p
         ⁢
         t
         ⁢
         u
        
       
      
      
       Δ
       ⁢
       p
      
     
     ·
     
      LT
      nominal
     
    
   
   =
   
    
     (
     
      
       t
       2
      
      -
      
       t
       1
      
     
     )
    
    ·
    
     
      Δ
      ⁢
      
       p
       
        p
        ⁢
        t
        ⁢
        u
       
      
     
     
      
       p
       2
      
      -
      
       p
       1
      
     
    
    ·
    
     LT
     nominal
    
   
  
 

wherein p1 is the first pressure value, p2 is the second pressure value, Δp is the pressure difference between the second pressure value p2 and the first pressure value p1, t1 is the first point in time and t2 is the second point in time, Δt is the time difference between the second point in time t2 and the first point in time t1, Δpptu is the nominal pressure drop per time unit, LTnominal is the nominal lifetime of the gas filling, plow is the minimum pressure value of the gas filling and No is the maximum pressure value of the gas filling.