P.O. Box 666
Chesterland, OH 44026
Phone: (800) 795-5226
Fax: (440) 729-8238
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Handheld Survey Meters :
Model 15 Survey Meter
Ludlum
Model 15 Survey Meter
PART NUMBER:48-1614
End Window G-M Detector for Alpha Beta and Gamma
BF³ Proportional Detector with Moderator for Neutron
4 Ranges
Total Counting Range from 0 - 500,000 cpm
INDICATED USE:
Fast and thermal neutron, alpha, beta-gamma survey
DETECTORS:
Controlled by selector switch
NEUTRON:
Model 42-9 BF³ proportional detector with 3"(7.6 cm) diameter cadmium lined moderator for fast neutrons (
remove detector from moderator for thermal neutrons
)
ENERGY RESPONSE:
Count response is not linear throughout energy spectrum (
0.025 - 8 MeV
)
SENSITIVITY:
Typically 60 cpm/mrem/hr (
AmBe fast neutrons
)
GAMMA REJECTION:
Less than 10 cpm through 10 R/hr
ALPHA BETA-GAMMA:
Model 44-7 thin end window G-M detector (
others available
)
WINDOW:
1.7 plus or minus 0.3 mg/cm² mica
WINDOW AREA:
Active - 6.4 cm²
Open - 5.2 cm²
EFFICIENCY(2pi geometry):
Typically 5% - 14C; 20% - 90Sr/90Y; 15% - 239Pu
SENSITIVITY:
Typically 2100 cpm/mR/hr (
137Cs gamma
)
METER DIAL:
0 - 500 cpm, 0 - 2.5 kV, BAT TEST (
others available
)
MULTIPLIERS:
X1, X10, X100, X1000
LINEARITY:
Reading within plus or minus 10% of true value
AUDIO:
Built in unimorph speaker with ON/OFF switch (
greater than 60 dB at 2 feet
)
CALIBRATION CONTROLS:
Accessible from front of instrument (
protective cover provided
)
RESPONSE:
Toggle switch for FAST (4 seconds) or SLOW (22 seconds) from 10% to 90% of final reading
RESET:
Push-button to zero meter POWER: 2 each “D” cell batteries (
housed in sealed compartment that is externally accessible
)
BATTERY LIFE:
Typically 600 hours with alkaline batteries (
battery condition can be checked on meter
)
METER:
2.5"(6.4cm) arc, 1 mA analog type
Page 1 of 2 Model 15 Neutron Meter
2/10/2005 http://www.ludlums.com/product/m15.htm
CONSTRUCTION:
Cast and drawn aluminum with beige polyurethane enamel paint
TEMPERATURE RANGE:
-4° F(-20° C) to 122° F(50° C) May be certified for operation from -40° F(-40° C) to 150° F(65° C)
SIZE:
12.5"(31.8cm)H X 3.5"(8.9cm)W X 8.5"(21.6cm)L
WEIGHT:
8 lbs(3.7 kg) including batteries
Click Here to Download a Printable Information Sheet. (.pdf format)
PH 1-800-795-5226
FAX 440-729-8238
P.O. Box 666 Chesterland, OH 44026
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