Olympus DELTA 50 - Page 20

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Table 1 Radiation profile
a
— Aluminum probe head
b
a. Table revision D, January 2013.
b. Aluminum probe head only, no probe shield in place.
Model: DELTA Series Date: Oct. 2012 and Jan. 2013
Survey instrument Ludlum Model 3
44-7 probe
Ludlum Model 2241
44-172 probe
Performed by:
F. Cook
R. Nasella
Validated by: M. L. Tremblay
Probe head: Aluminum
Measured dose rate in µSv/h
c
— Secondary radiation (scatter)
c. To convert measurements to mR/h, divide results by 10.
Mode(s) Substrate Voltage
(kV)
Amperage
(µA)
Filter Trigger — T Close — F 5 cm — F1 10 cm—F2 30 cm
(calculated)
Alloy Plus, Mining,
Mining Plus,
GeoChem 1, 3-Beam
Soil 2, HalFree 1, RoHS 1
(plastic)
316 stainless 40 100 Aluminum
BK
d
d. BK = Background reading (< 1 μSv/h).
7 6 BK BK
Al (319 AA) 7 300 120 30 4
EC 680K 45 900 500 320 19
Soil (SiO
2
) 20 400 250 70 9
RoHS 1, 4-Beam RoHS 1
(plastic), RoHS 2,
4-Beam RoHS 2 (alloy)
PVC-Blank
50
e
e. All 50 kV readings are taken with standard probe shield in place.
80 Copper 10 840 400 250 15
EC 680K 16 1800 800 500 30
71X SR2 (solder) BK 5 1 BK BK
Alloy, Mining 316 stainless 35 100 Aluminum BK 2 2 BK BK
Soil (SiO
2
) 5 130 60 20
Alloy Plus 3 316 stainless 8 200 Open BK BK BK BK BK
Al (319 AA) BK BK BK BK BK
Alloy Plus 2 316 stainless 13 200 Open BK BK BK BK BK
Al (319 AA) BK BK BK BK BK
Alloy 2 316 stainless 15 200 Iron BK BK BK BK BK
Al (319 AA) BK BK BK BK BK
3-Beam Soil 1, Mining
Plus
Soil (SiO
2
)
50
e
80 Copper 25 1500 800 450 30
3-Beam Soil 1 Soil (SiO
2
) 40 100 Copper 10 400 220 70 8
RoHS 2 (alloy) PVC-Blank 40 100 Copper 5 200 90 30 3
EC 680K 4 700 420 300 16
Geochem 2, Mining
Plus 2
Soil (SiO
2
) 10 200 Open BK BK BK BK BK
3-Beam Soil 3 Soil (SiO
2
) 15 200 Thin
aluminum
BK BK BK BK BK
Lead 2 71X SR2 (solder) 18 200 Aluminum BK BK BK BK BK
Lead 1 71X SR2 (solder) 25 100 Aluminum BK BK BK BK BK
HalFree 2 EC 680K 10 200 Open BK 8 1 BK BK
HalFree 2 EC 680K 12 200 Open BK 70 13 4 BK