ASIV Accuracy Check

An accuracy check should be performed periodically. The frequency should be determined by your Quality Assurance Program.

• Have as little tubing as possible between the gas out port of the standard and the mouthpiece of the Alco Sensor IV.
• Check Expiration Date (on Wet Bath Simulator Solution or Dry Gas Tank)
• Check Temperature of the standard (Check Wet Bath Simulator Temperature)
• Purge the simulator or dry gas regulator for several seconds
• Know the current expected value of the Standard gas
• If you keep a calibration log, it should be present

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

Note: A calibration standard can be a: 
• Dry Gas Cylinder and Regulator
• Wet Bath Simulator and Solution
 

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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