Ludlum Model 12-4 Monthly Rental

$402.00
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$402 monthly/$134 weekly

  • 4 Ranges
  • Splashproof Shields
  • Dose Response
  • Total Range from 0-10,000 mrem/hr
  • He-3 Detector
  • AmBe Source calibrated

Indicated use:
Neutron Survey

Working environment:
Splash proof shields for outdoor use

Detectors:
1.6 cm diameter X 2.5 cm thick ³He detector surrounded by a 9"(22.9 cm) diameter cadmium loaded polyethylene sphere

Sensitivity:
Approximately 120 cpm/mrem/hr (AmBe neutrons)

Note:
This unit provides an approximate inverse RPG curve for neutrons from thermal through 10 MeV

Gamma rejection:
Less than 10 cpm through 10 R/hr

Audio:
Built in unimorph speaker with ON/OFF switch (greater than 60 dB at 2 feet)

Meter dial:
0 - 10 mrem/hr, 0 - 2.5 kV, BAT TEST (others available)

Multipliers:
X1, X10, X100, X1000
 
Linearity:
Reading within plus or minus 10% of actual value
 
Calibration controls:
Accessible from front of instrument (protective cover provided)
 
High voltage:
Adjustable from 200 - 2500 volts (can be read on meter)
 
Discriminator:
Adjustable from 2 - 60 mV

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
 
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:
17"(43.2cm)H X 9"(22.9cm)W X 10.5"(26.7cm)L
 
Weight:
21 lbs(9.5 kg) including batteries