Ludlum Model 12 Ratemeter

Ludlum Model 12, #48-1609



Model 12 Ratemeter Compatible Detectors: G-M, proportional, scintillation
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 with detector connected
CONNECTOR: Series "C" (others available )
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 )
HIGH VOLTAGE: Adjustable from 200 - 2500 volts (can be read on meter )
DISCRIMINATOR: Adjustable from 1 - 100 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 2000 hours with alkaline batteries (battery condition can be checked on meter )
METER: 2.5" (6.4 cm) arc, 1 mA analog type
CONSTRUCTION: Cast and drawn aluminum with beige powdercoat
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: 6.5" (16.5 cm)H X 3.5" (8.9 cm)W X 8.5" (21.6 cm)L
WEIGHT: 3.5 lbs (1.6 kg) including batteries

Ludlum Model 12 Manual

*For Mylar window scintillators it is strongly suggested that the optional overload indicator be used on the Model 12 Ratemeter to better determine the presence of a light leak.

Ludlum Model 12 Common Meter Dials

 202-356
0 - 500 cpm; 0-2.5 kV
For Any Detector

 202-354
0-10 cps; 0-2.5 kV
For Any Detector

  202-618
0-660 cpm; 0-0.2 mR/hr
For Model 44-9; 44-9-18;
44-40; 44-88; 44-89; 44-94

 


 

 

 

 202-428
0-5 mR/hr

For Model 44-2

 202-645
0-5 mR/hr; 0-800 cpm

For Model 44-2 and 44-9 

 

 

Accessories

Replacement Parts

Check Source
Source Holder
Overload Indicator
Scaler Option
Shoulder Strap
Headset
Standard Carrying Case
Air and Water Tight Carrying Case

Cables
Meter Bezel
Meter Movement
Handle
Probe Clip

 

For
Alpha
Measurements

For
Beta
Measurements

For
Gamma
Measurements

For Alpha/beta/gamma Measurements

Model 43-1*
Model 43-2*
Model 43-5*
Model 43-20
Model 43-44
Model 43-44-1
Model 43-65*
Model 43-68
Model 43-90*
Model 44-7
Model 44-9
Model 44-88
Model 44-89
Model 44-94

Model 43-20
Model 43-68
Model 44-1*
Model 44-6
Model 44-7
Model 44-9
Model 44-21
Model 44-38
Model 44-88
Model 44-89
Model 44-92
Model 44-94
Model 44-98*
Model 44-116*

Model 44-2
Model 44-3
Model 44-6
Model 44-7
Model 44-9
Model 44-10
Model 44-17
Model 44-20
Model 44-21
Model 44-38
Model 44-62

Model 44-7
Model 44-9
Model 44-88
Model 44-89
Model 44-94

Suggested detectors are listed below and are not included with the survey meter price. An additional charge will be added for each detector ordered.

*For Mylar window scintillators it is strongly suggested that the optional overload indicator be used on the Model 12 Ratemeter to better determine the presence of a light leak.

 

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