LUDLUM 2224-1 Alpha-Beta Scaler-Ratemeter

Indicated Use: Simultaneous alpha and beta counting and discrimination

Compatible Detectors: Proportional and dual phosphor scintillation

Linearity: Reading within 10% of true value with detector connected

Meter Dial: 0 - 500 cpm, 0 - 2 kV, BAT OK, OL (overload)

Meter: 6.4 cm (2.5 in.) arc, 1 mA analog type

Scaler: 6-digit LCD display with 0.64 cm (0.25 in.) digits, overflow arrow, and colons to indicate when a count is in process

Multipliers: x1, x10, x100, x1000

Count: Pushbutton to initiate scaler count

Count Time: Externally selectable times of 0.1, 0.5, 1, or 2 min.

Selector Switch: Toggle switch to select alpha and beta, alpha only, or beta only

Response: Will vary according to number of counts present, typically 2 to 11 s from 10% to 90% of final reading

High Voltage: Adjustable from 400 to 2000 V (can be read on meter)

High Voltage Adjust: Accessible from front of instrument (protective cover provided)

Overload: Senses detector saturation, indicated by red lamp on meter and meter going to full scale (adjustable depending on detector selected)

Audio: Built-in unimorph speaker with volume control (greater than 60 dB at 61 cm [24 in.], full volume), 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)

Temperature Range: -20 to 50 °C (-4 to 122 °F)

May be certified for operation from -40 to 65 °C (-40 to 150 °F)

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)

Connector: Series “C” (others available)

Size (H x W x L): 16.5 x 8.9 x 21.6 cm (6.5 x 3.5 x 8.5 in.)

Weight: 1.6 kg (3.5 lb), including batteries

Datasheet

Manual