Several organizations and publications reference or insist on maintaining a 4:1 Test Uncertainty Ratio (TUR) without understanding the level of risk that they may be subjecting themselves to. The general thought is if the lab performing the calibrations has standards at least four times better then what they are calibrating that everything is good. This webinar discusses TUR, PFA Risk, and why the location of the measurement matters. We will discuss two managed risk guard banding methods (5 & 6) found in the ANSI/NCSL Z540.3 Handbook. We will show that a 4:1 TUR is not enough and can result in a 50 % risk. This webinar is intended for anyone thinking a 4:1 TUR or TAR is enough as we will prove that thought process to be somewhat flawed. Others wanting to know more about risk should also attend.

• The webinar attendee will understand that a 4:1 TUR & 4:1 TAR is not enough when analyzing risk.
• The webinar attendee will learn more about the role measurement uncertainty makes in making statements of conformance.
• The webinar attendee will know the importance of the location of the measurement and leave with a basic understanding of guard banding.

Morehouse Aircraft Scale Calibrator was designed to accommodate the large size, high capacity scales which are utilized to weigh aircraft and heavyweight vehicles. As it applies to any other calibration machine, Morehouse Aircraft Scale Calibrator is designed to be rigid, square, and level, which allows the machine to have an accuracy equal to the reference standard with which it is used; load cell or proving ring.

Morehouse Aircraft Scale Calibrators are designed to speed the calibration and certification of scales, yet maintain the high degree of accuracy required for proper certification. The calibrator can be used to calibrate all kinds of truck and aircraft scales. Some scales include:

Intercomp, Jackson Aircraft Weighing (JAWS), GEC, Haenni, Rice Lake, Ohaus, Proform, Brechnell, Tanner Racing, Taylor

The momentary hand switch, auxiliary screw pump, and upgrade kits are available for older Morehouse Scale Calibrator Machines and Universal Calibrating Machines (UCMs).