Model 16 Analyzer
Ludlum Measurements

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)
THRESHOLD: Adjustable from 2 - 60 mV
WINDOW: Adjustable from 0 - 60 mV above threshold (can be turned on or off)
OVERLOAD: Senses detector saturation. Indicated by red lamp on meter and meter going to full scale (adjustable depending on detector selected)
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" (6.4 cm) 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: 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




Model 43-20
Model 43-44
Model 43-44-1
Model 43-68

Model 44-7
Model 44-9
Model 43-1
Model 43-2
Model 43-5
Model 43-65
Model 43-90

Model 43-20
Model 43-68
Model 44-1
Model 44-7
Model 44-9
Model 44-21
Model 44-92
Model 44-98
Model 44-116


Model 44-2
Model 44-3
Model 44-10
Model 44-17
Model 44-20
Model 44-21
Model 44-62

Common Meter Dials

0 - 1k cpm; 0-2.5 kV
For Any Detector

0-50 cps; 0-2.5 kV
For Any Detector


Replacement Parts

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

Meter Bezel
Meter Movement
Probe Clip


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