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HomeRadiological InstrumentsLudlum Model 3 Count Rate Meter – Refurbished

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Ludlum Model 3 Count Rate Meter – Refurbished

$575.00 $350.00

The Ludlum Model 3 Survey Meter is an extremely versatile meter, that with proper care, will last decades. It operates on two “D” cells for approximately 2000 hours. The Ludlum Model 3 has adjustable high voltage to 1500 volts and includes external calibration controls. It can be used with GM probe or scintillators to assess a wide range of radioactivity from environmental to high radiation areas.

Counts.Pro Ready!
The model 3 can be converted easily to a digital datalogging scaler/ratemeter by adding a Counts.Pro.

23 in stock

SKU: 214795937 Product Type: counts.pro capable, Radiological Instruments Vendor: Ludlum
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The Ludlum Model 3 Survey Meter is an extremely versatile meter, that with proper care, will last decades. It operates on two “D” cells for approximately 2000 hours. The Ludlum Model 3 has adjustable high voltage to 1500 volts and includes external calibration controls. It can be used with GM probe or scintillators to assess a wide range of radioactivity from environmental to high radiation areas.

Add a Counts.Pro for $399 to digitize and record your surveys and turn your meter into a digital scaler/ratemeter/cloud connected GPS datalogger!  Take your meter to the next level with Counts.Pro.  A refurbished meter WITH the Counts.Pro can be had for about the price of a new Model 3.

The four counting ranges are x0.1, x1, x10, x100.

Typical Counting Range is from 0 – 200 mR/hr, or 0 – 500,000 cpm.

The Ludlum Model 3 is supplied as shown with built-in speaker.

Any GM or Model 44-3 or 44-2 gamma scintillator probes and many others can also be used with this meter.

INDICATED USE: General purpose survey
COMPATIBLE DETECTORS: G-M, scintillation
METER DIAL: 0 – 2 mR/hr, or 0 – 5k cpm, BAT TEST (others available)
MULTIPLIERS: X0.1, X1, X10,X100
LINEARITY: Reading within ±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 – 1500 volts
THRESHOLD: 30 mV ± 10 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 greater than 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 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

Additional information

Weight 7 lbs
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