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ASIII Accuracy Check

An Accuracy Check should be performed periodically. The frequency should be determined by your Quality Assurance Program.

Accuracy Check Procedure for the Alco Sensor III

Below are basic Accuracy Check instructions for the Intoximeters Alco Sensor III breath testing instrument.

Tools Required: Before beginning have items available: instrument, calibration standard, new mouthpiece

 
  • Dry Gas Standard & Regulator
  • True-Cal Device displays
  • Alco-Sensor III
  • New Mouthpiece
 

 

 
Note: A calibration standard can be a: 
  • Mini-Alco Can (for non-evidentiary testing applications only),
  • Dry Gas Cylinder and Regulator
  • Wet Bath Simulator and Solution
     

 

True-Cal displays .080
For this demonstration, a dry gas cylinder is used as the standard - value (at sea level) of.082%. A True-Cal device was used to give the true value of the standard at the time of our demonstration – the True-Cal will adjust the expected gas value for the current atmospheric pressure. Therefore, the target value for this demonstration is .080
 

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