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Acuity LS 

 

 Page 4 

Operating Manual  #OMA20200327 

 

 

Figure 2.  

 Acuity LS sensing elements. 

3 .  

H

A R D W A R E  

S

E T U P

 

This  section  describes  the  LSP  installation  and  removal  procedures,  connections  required  for  system 
operation, and coated panel preparation.   

LSP Removal and Installation 

The Acuity LS device is delivered fully assembled with LSP installed on base.  The following instructions 
are  only  needed  for  replacement  of  an  LSP.    The  replacement  LSP  is  delivered  with  a  new  O-ring  seal 
installed.   For  set  up  of new  Acuity  LS  device  please  skip  to  next  section  "LSP  Surface  Preparation  for 
Testing". 

LSP removal: 

1.  Thoroughly  rinse  and  dry  the  Acuity  LS  device  to  remove  corrosive  contaminants  and  salts, 

especially near LSP and base interface.   

2.  Remove all socket-head cap screws using 

9/64” hex wrench. Take care to avoid sideways motion 

of the LSP as the screws are removed as this may damage the internal spring pin connector. 

3.  The LSP can then be removed from the base by lifting it straight up.   

4.  Once  the  LSP  is  removed,  examine  the  base  spring  contacts  for  any  corrosion  or  mechanical 

damage.  Lightly  press  on  the  spring  pins  with  a  clean  wipe  (no  fingers)  and  verify  that  they 
actuate  smoothly  and  all  return  to  the  same  position.    The  spring  contacts  on  the  base  should 
have no signs of corrosion or mechanical damage.  Please contact Luna if there is any evidence 
of seal leakage allowing contaminants into the device and connector.  

LSP installation: 

1.  Ensure that the base and LSP mating surfaces are clean, dry, and free of any contaminants and 

obstructions that may prevent them from mating together and forming a seal.  

Summary of Contents for Acuity LS

Page 1: ...ACUITY CORROSION MANAGEMENT SOLUTIONS Acuity LSTM OPERATING MANUAL OMA20200327 sensinst lunainc com...

Page 2: ...ment 6 System Restart 7 4 Software and Driver Installation 7 Acuity LS User Interface Software and USB Driver Installation 7 5 Software Operation 8 Establishing Communication 8 Operating the User Inte...

Page 3: ...ble by the user Replacement Acuity LS Lid Sensor Panels LSP may be purchased from Luna 2 HARDWARE DEFINITION The Acuity LS system includes a multi sensor data acquisition device that saves data intern...

Page 4: ...LSP and base interface 2 Remove all socket head cap screws using 9 64 hex wrench Take care to avoid sideways motion of the LSP as the screws are removed as this may damage the internal spring pin conn...

Page 5: ...eck function in Section 5 Operating the User Interface will confirm the LSP is in good contact by displaying reasonable measurements for air temperature and relative humidity LSP installation is now c...

Page 6: ...ttery cap Figure 4 3 Remove the metal battery contact tube and the battery For sensors mounted with battery cap facing up the battery is more difficult to extract In these situations it may be possibl...

Page 7: ...tions for installing the software and drivers needed to communicate with Acuity LS Please ensure that your computer meets these basic system requirements Laptop or desktop computer with Windows 7 8 or...

Page 8: ...e computer 1 Remove the protective cap Figure 1 item 4 and install the RS 485 cable Figure 1 item 5 The other end of the cable plugs into any USB 2 0 compliant serial port NOTE When finished communica...

Page 9: ...port does not depend on which physical USB port is used Figure 6 Configuring the communications COM port 5 Select a COM port e g COM4 and click the OK button a If the correct COM port has been selecte...

Page 10: ...Displays the sampling interval in minutes currently set for the device Acuity LS Device ID Displays the serial number of the connected Acuity LS device This number should match the label on the outsi...

Page 11: ...connect a different Acuity LS device without restarting the interface utility software System Check Instructs the Acuity LS device to immediately take a set of measurements and display the results in...

Page 12: ...the provided text boxes The Aircraft Asset window can be used to enter specific information and notes about the aircraft asset or structure being monitored The Acuity LS device window can be used to e...

Page 13: ...to return to the main screen 8 Once data logging has started the System Status on main screen will indicate Logging Data and displays the selected Sampling Interval and Gold IDE Setup Download Data L...

Page 14: ...ce first sample in data file C Air Temp C Temperature of the ambient air in degrees Celsius D RH Percent relative humidity of the ambient air E Surface Temp C Temperature of the structure in degrees C...

Page 15: ...C 0 UNIX time may be readily converted to other time and date formats using the methods in Table 2 or this time converter https www epochconverter com Table 2 Converting UNIX time to other date and ti...

Page 16: ...nits Sensor Excitation Surface Temperature Ts 40 85 C DC current Air Temperature Ta 40 85 C Relative Humidity RH 0 100 Conductance Low Freq GH 0 005 1 S 20 mVpp 10 Hz Conductance High Freq GL 5 10 000...

Page 17: ...tem CD Compact Disk COM Communications FTDI Future Technology Devices International ID Identification IDE Interdigitated Electrode IPA Isopropyl Alcohol LSP Acuity LS Lid Sensor Panel PC Personal Comp...

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