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  • Ludlum Model 2224 Alpha – Beta Scaler Ratemeter

$2,620.00 $1,310.00

1 in stock

Product Type: Vendor:

-Simultaneous Alpha/Beta Counting
-Built-In 6 Digit LCD Scaler
-Display Alpha Only, Beta Only, or Alpha/Beta Counts
-Total Counting Range from
-0 – 500,000 cpm

INDICATED USE: Simultaneous alpha, beta counting and discrimination
COMPATIBLE DETECTORS: Proportional and dual phosphor scintillation detectors
AUDIO: Built in unimorph speaker with volume control (greater than 60 dB at 2 feet, full volume)
AUDIO DIVIDE: Selectable dual or individual click-per-event for alpha and beta counts and divisions of 1, 10, 100, or 1000 events-per-click (beta counts only)
METER: 2.5″(6.4cm) arc, 1 mA analog type
METER DIAL: 0 – 500 cpm, 0 – 2 kV, BAT OK, OL(overload)
MULTIPLIERS: X1, X10, X100, X1000
LINEARITY: Reading within plus or minus 10% of true value with detector connected
SCALER: 6 digit LCD display with 0.25″(0.64cm) digits, overflow arrow, and colons to indicate when a count is in process
COUNT: Push-button to initiate scaler count
COUNT TIME: Internally selected times of 0.1, 0.5, 1, or 2 minutes
SELECTOR SWITCH: Toggle switch to select alpha and beta, alpha only, or beta only
HIGH VOLTAGE: Adjustable from 200 – 2000 volts (can be read on meter)
HIGH VOLTAGE ADJUST: Accessible from front of instrument (protective cover provided)
THRESHOLD: Internal control allows adjustment from 2 – 15 mV for beta, and 40 – 700 mV for alpha
WINDOW (Beta only): Internal control allows adjustment from beta threshold up to the alpha threshold setting
OVERLOAD: Senses detector saturation. Indicated by red lamp on meter and meter going to full scale (adjustable depending on detector selected)
RESPONSE: Will vary according to number of counts present. Typically 2 – 11 seconds from 10% to 90% of final reading
POWER: 2 each “D” cell batteries (housed in sealed compartment that is externally accessible)
BATTERY LIFE: Greater than 350 hours with alkaline batteries (battery condition can be checked on meter)
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″(16.5cm)H X 3.5″(8.9cm)W X 8.5″(21.6cm)L
WEIGHT: 3.5 lbs(1.6kg) including batteries


For internal use:

Barcode 16010762

Shelf 10F

Additional information

Weight 5 lbs
Dimensions 14 × 12 × 12 in