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AP Series Accelerometers


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APTech general purpose accelerometers are designed to cover of a wide range of applications without the need of having another sensor for each measurement-job. The sensors are optimised for wide frequency- and amplitude range while having medium range dimensions and weight. The annular shear construction makes these accelerometers relatively insensitive to external influences such as changes in temperature, base-strain and magnetic fields. Type AP90
has been specifically designed for leak detection on pipelines. Types AP37 and AP2037 are ideally suited for control-loop applications in vibration excitation systems.

General purpose
accelerometers

                                                                                      AP28                             AP35-30                      AP35-100                        

Parameter                                          Unit
Charge sensitivity (+/- 10%)           pC/g                    -                                          -                                  -                                      
                                                             pC/ms²              -                                         -                                  -                                    
Voltage sensitivity (+/- 10%)             mV/g               30                                       30                               100                                     
                                                                mV/ms²         3.06                                  3.06                            10.2                                     
Amplitude range                                  g rms             160                                    150                             50                                 
Resolution                                            g rms             0.0001                             0.0001                           0.0003                              
Mechanical shock limit                       g peak            1000                               500                                 500                               
Frequency range (+/- 1 dB)                Hz                    0.5 to 10,000                1 to 12,000                 1 to 12,000             
Resonant frequency                            kHz                  >30                                >40                              >40                               
Transverse sensitivity                         %                      <5                                 <5                                 <5                                 
Base strain sensitivity                      g/μm                  <0.005                          <0.005                        <0.005                      
Temperature range                         °C                     -60 to +125                      -60 to +125              -60 to +125            
Insulation resistance                        MΩ                          -                                     -                                    -                       
Capacitance                                       pF                            -                                     -                                     -                  
Isolated base                                                                   No                                Yes                               Yes                         
Excitation voltage                        Volt DC                   +18 to +30                +18 to +30                   +22 to +30                   
Constant current                            mA                       2 to 20                         2 to 20                           2 to 20                  
Output impedance                         Ω                           <500                           <500                                <500                    
Output bias voltage                       Volt DC                +9 to +13                         +9 to +13                          +9 to +13            
Settling time                                   second                 3                                  3                                               3                  
Construction                                                               Shear                                Shear                              Shear                
Piezo material                                                            ZTP19                              ZTP19                           ZTP19             
Sensor connector                                                      BNC                                 -                                     -               
Integral cable length                      meter                   -                                      2                                      2                        
Connecting cable                                                         -                                  Metal tube                  Metal tube                 
Cable connector                                                         -                                    Open end                      Open end       
Side/Top connection                                               Top                                   Side                             Side                        
Mounting method                                                     M6                                      M6 bold                         M6 Bold                   
Housing material                                                     S.Steel                               S.Steel                          S.Steel                 
Weight without cable                  gram                      40                                       39                                   39                               

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