The Spectral Gamma tool is a three-channel analysis of the gross gamma ray spectrum
as it relates to potassium, uranium, and thorium content. An internal energy source of
less than 1 micro-curries of Cs137 is used to excite the crystal and to stabilize the
electronics prior to logging.  The spectral window is recorded via a 256 channel spectrum
board so that the different energy levels from the formation can be analyzed. 
FEATURES
Properties Measured
1. Potassium (K)
Percent 40
Offset: 135.63 cm (53.4in.)
2. Uranium (U):
Parts Per Million
Offset: 135.63 cm (53.4in.)
3. Thorium (T)
Offset: 135.63 cm (53.4in.)
 Length: 167 cm (65.75in.)
Temperature: 65 C (150 F)
Diameter: 60.96 mm (2.40 in.)
Pressure: 232 kg/cm2 (3000 PSI)
Weight: 16.82 kg (37 lb.)
Logging Speed: 1.5 m/min. (5
ft./min.)
Tool Voltage Required: 60 VDC
Tool #:7201
Part #:272000