Fluke 90100 manual Basic Operating Equations

Model 90100

Operators Manual

Pressure		Temperature
mm Hg = inch Hg ∗ 25.4		K = (5/9) ∗ (°F -32) - 273.15
mm Hg = 760 ∗ (54,041	- feet ASL) / (54,041 + feet ASL)	K = °C + 273.15
mm Hg = 760 ∗ (16,472	- meters ASL) / (16,472 + meters ASL)
mm Hg = mB ∗ 0.75006
mm Hg = hPa ∗ 0.75006

3.5 Basic Operating Equations

This section lists the basic operating equations used within the 35360A TRACKER Display to produce its dose and dose rate measurement values for display on the VFD. These equations are expressed in terms of a set of basic operating quantities which are described in Table 3-3.

3.5.1 Charge

Although charge is not a value which can be displayed directly by the 35360A TRACKER Display, it is an intermediate result upon which the dose value directly depends.

Q [nC] = (ADC [counts] - ADZ [counts] ) ⋅ QG [nC/count]

3.5.2 Current

Although current is not a value which can be displayed directly by the 35360A TRACKER Display, it is an intermediate result upon which the dose rate value directly depends.

I [nC/Min] = (ADC [counts] - ADZ [counts]) ⋅ IG [(nC/Min)/count]

3.5.3 Absolute Dose

Q [nC]⋅ICCF[IonChamberCalUnits/nC]

AbsoluteDoseDisplay[DisplayUnits]=⋅ DUCF[DisplayUnits/IonChamberCalUnits]⋅ ADCF⋅ FPGF

3.5.4 Absolute Dose Rate

I [nC/Min] ⋅ ICCF [ Ion Chamber Cal Units/nC]

Absolute Rate Display [Display Units/Min] = ⋅ DUCF [Display Units/ Ion Chamber Cal Units] ⋅ ADCF ⋅ FPGF

3.5.5 Percent-of-Center

Percentage Display for Perhiperal Channel [%] = 100 [%] ⋅ Absolute Rate Display for Perhiperal Channel Absolute Rate Display for Center Channel

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