Ludlum Model 2221 Radiation Meter Digital Scaler/Ratemeter, Eberline, Victoreen, US $1,250.00 – Picture 0

Ludlum Model 2221 Radiation Meter Digital Scaler/Ratemeter, Eberline, Victoreen, US $1,250.00 – Picture 1

Ludlum Model 2221 Radiation Meter Digital Scaler/Ratemeter, Eberline, Victoreen, US $1,250.00 – Picture 2

Ludlum Model 2221 Radiation Meter Digital Scaler/Ratemeter, Eberline, Victoreen, US $1,250.00 – Picture 3

Ludlum Model 2221 Radiation Meter Digital Scaler/Ratemeter, Eberline, Victoreen, US $1,250.00 – Picture 4

Ludlum Model 2221 Radiation Meter Digital Scaler/ratemeter, Eberline, Victoreen

US $1,250.00

Oak Ridge, Tennessee, United States
Jan 29th

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We are selling several of these, the photo is of a single unit. They are all in the same condition. This is an extremely versatile meter to buy. With this one meter, you can operate your entire radiation measurement operation. We have sold many of these to people in Japan who like the scaler function to measure low levels of radiation when paired with a scintillation probe like a Ludlum Model 44-10. These are frequently used for walkover surveys and coupled with a GPS unit measuring contamination and can also be used with GPS, Datalogger, and a Scintillation probe for prospecting for uranium. It will drive any probe you can think of to measure radiation. GM, Scintillators (BGO, NaI, plastic, etc), gas flow proportionals, alpha and beta probes, etc. The scaler function can be used to take spot measurements and compare them to averages with timed counts using the digital scaler (this was done by people in Japan looking for contamination on food and shipments overseas after Fukushima). Great for when you find a hot spot either during a survey to quantify the measurement. You can use this as a laboratory counter to count swipes and air samples with a suitable probe. You can do gamma counting too. Switching probes is easy as the digital scale shows the various setpoints so you can change probes on the fly. HV, Threshold, Window, etc. See more details below. Ludlum Model 2221 Radiation Scaler/Ratemeter, Single Channel Analyzer ? Digital Radiation Ratemeter with Built-In Scaler ? Dual Analog Meter and Digital LCD Presentation ? Rich Array of Discrete Front Panel Controls ? Single Channel Analyzer ? Wide Range HV ? Overload Protection ? Supports GM, Proportional and Scintillation Detectors The Ludlum Model 2221 is a general purpose radiation ratemeter and scaler that provides a customary analog display for optimally viewing the count rate and rate of change through all possible four decades of display. It is accompanied by a digital LCD which can present either the count rate data or be switched over to read the scaler counts. What makes this instrument so well liked by experts is its rich array of logically arranged discrete controls on the front panel that permit precise control of the desired measurement. Control functions available include, decade range selection, scaler count time, power on/off, response setting, LCD analog/digital switch, PHA window switch, lamp, audio divide by, audio volume, count zeroing, scaler start/halt. The wide range high voltage supply supports a wide variety of detectors with additional threshold and window settings that facilitate switching between gross counts and the energy band. The instrument housing is cast aluminum with a separate battery compartment and accompanying metal handle. This design delivers industrial robustness, quality, capability, and versatility that is difficult to surpass anywhere. PART NUMBER: 48-2065 APPLICATIONS: radiation field analysis RATEMETER: provides a four-decade analog display that is operational any time the instrument is turned on, the ratemeter can also be presented on the accompanying LCD as a digital value when the LCD is switched to the "Dig. Rate" position SCALER: range from 0-999999 counts TIMER: switch selectable divisions of 0.1, 0.5, 1, 2, 5, 10 minutes or CONT (continuous) for manual timing CONCURRENT USE: scaler or digital ratemeter is active when not selected, allowing for concurrent use THRESHOLD: adjustable from 100-1000 (can be checked on display) WINDOW: adjustable from 0-1000 above threshold setting (can be turned on or off) GAIN: adjustable from 1.5–100 mV at a threshold setting of 100 OVERLOAD: senses detector saturation, indicated by “– – – –” on LCD display and meter going to full scale (adjustable depending on detector selected) HIGH VOLTAGE: adjustable from 400-2400 volts (can be checked on display) CONNECTOR: series "C" type (others available) METER FACE: 0–500 cpm, 50–500k cpm logarithmic scale (others available) DIGITAL DISPLAY: 6-digit LCD display with 0.5 in. (1.3 cm) high digits LCD BACKLIGHT: activated by LAMP switch AUDIO: built-in unimorph speaker with volume control AUDIO DIVIDE: toggle switch for 1, 10, or 100 events per click AUDIO JACK: for optional headset CONTROLS: Power Switch: On/Off Scale Selector Switch: x1, x10, x100, x1K, Log Response Switch: toggles between FAST (4 s) or SLOW (22 s) from 10% to 90% of final reading Meter Zero Pushbutton: to zero meter Audio Volume Knob: adjusts volume of audio output Audio Divide Switch: divides audio clicks by either 1, 10, or 100 Meter Lamp Switch: illuminates meter Window Switch: for selecting between wide open window counts or a narrower setting for viewing a specific energy band Scaler Count Time Selector Switch: 0.1, 0.2, 0.5, 1, 2, 5, or 10 minutes Count Pushbutton: starts or resets scaler count Count Hold Pushbutton: stops scaler count and leaves result in the display Scaler/Digital Rate Switch: selects which mode is presented on the LCD Test Buttons: battery, high voltage, threshold, window Calibration Controls: recessed screwdriver adjustments with calibration cover POWER: 4 each “D” cell batteries BATTERY LIFE: typically 250 hours with alkaline batteries (battery check on meter) SIZE: 9 x 4.3 x 10 in. (22.9 x 10.9 x 25.4 cm) (H x W x L) including handle WEIGHT: 5.5 lb (2.5 kg) including batteries

Condition:	Used: An item that has been used previously. The item may have some signs of cosmetic wear, but is fully operational and functions as intended. This item may be a floor model or store return that has been used. See the seller’s listing for full details and description of any imperfections. ...	Brand	Ludlum
Type	Scaler / Rate Meter
Model	2221
Country of Manufacture	United States
MPN	48-2065