Isotope Strength (Activity)

1200mCi

190mCi

100mCi

Half Life

10.7 years

10.7 years

28 years

Basis Weight (Paper)
Thickness (Mylar)

6 to 570 lb/3000 ft2
(10 to 930 g/m2)
.3 to 28 mils
(.0078 to 71mm)

60 to 570 lb/3000 ft2
(99.6 to 930 g/m2)
3 to 28 mils
(.076 to 71mm)

140 to 5100 lb/3000 ft2
(232 to 8300 g/m2)
8 to 250 mils
(.20 to 6.35mm)

Accuracy

Better than 0.1%
(10 to 488 lb/3000 ft2
0.5 to 24 mils)
Better than 0.25%
(10 to 570 lb/3000 ft2
0.3 to 28 mils)

Better than 0.1%
(200 to 488 lb/3000ft2
10 to 24 mils)
Better than 0.25%
(60 to 570 lb/3000 ft2
3 to 28 mils)

Better than 0.25%
(140 to 5100 lb/3000 ft2
8 to 250 mils

Repeatability

±0.1 % of Nominal

±0.1 % of Nominal

±0.2 % of Nominal

Error Caused by
Passline Deviation

None

None

None

Temperature
Compensation

Yes

Yes

Yes

Time Constant

< 10ms

< 10ms

< 10ms

Source Geometry

1/8 x 1-3/8 inches
(3.2 x 35mm)

1/8 x 1-3/8 inches
(3.2 x 35mm)

7/16 inches diameter
(11 mm)

Standard Air Gap

1.0 inch (25mm)

1.0 inch (25mm)

2.0 inch (50mm)

Max Operating Temp

150° F (65° C)

150° F (65° C)

150° F (65° C)