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Model 2200

Scaler-Ratemeter

Part Number: 48-1651

Features

General Purpose Scaler/Ratemeter
Single Channel Analyzer
Supports Wide Range of External Detectors
95 to 250 Vac Power Input
Portable Battery Operation
RS-232 Interface to Printer or PC

The Model 2200 is a general purpose scaler with an accompanying ratemeter, and is typically used for counting samples. Its rugged design and construction allow both benchtop and portable applications. The wide-ranging AC power supply and internal batteries are capable of powering the instrument upwards of 120 hours. The Model 2200 supports GM, proportional, and scintillator-type detectors, and provides fine adjustment controls for setting the high-voltage and threshold settings.

An adjustable discriminator and an adjustable window allow the user to count pulses within a user specified energy range. This portable unit can be powered by wall current or by four "D" cell batteries. The latter allows for continued operations during power interruptions. An optional printer (Model 4167-386) is available for hard copy archival of wipe test results.

The Ludlum Model 2200 Scaler/Ratemeter is the ideal economic solution for routine sample counting, single channel analyzing and routine radiopharmaceutical related procedures, when used with the Model 243 well scintillator (Nal) detector. The well counter's 4π geometry and 1.3 cm (0.5 in.) shielding provides excellent sensitivity to higher energy isotopes like ¹³¹I.

Specifications

Indicated Use	Single channel analyzing, gross counting
Suggested Detectors	GM, scintillation, proportional
Connector	Series “C” (others available)
Scaler	Six-digit LED display with a range of 0 to 999999 counts
Scaler Linearity	Reading within 2% of true value
Timer	Push-wheel adjustment from 0 to 999 minutes with selectable x0.1 and x1 multipliers
Multipliers	x1, x10, x100, x1000
Ratemeter	0 to 500,000 cpm total range
Ratemeter Linearity	Reading within 10% of true value
Response	Toggle switch for FAST (4 seconds) or SLOW (22 seconds), from 10% to 90% of final reading
Meter Dial	0 to 500 cpm, 0 to 2.5 kV, BAT TEST
Meter	6.4 cm (2.5 in.) arc, 1 mA movement analog type
Zero	Pushbutton to zero meter
High Voltage	Adjustable from 200 to 2500 V (will support 60 MΩ scintillation loads)
Threshold	Adjustable from 1.0 to 10.0
Window	Adjustable from 0 to 10.0 above the threshold setting (can be enabled or disabled)
Discriminator	Adjustable from 2 to 100 mV at threshold setting of 1.00
Data Output	9-pin RS-232 port for connection to PC for data download. A one meter RS-232 to USB adapter cable is included. PC interface software is available here.
Power	95 to 250 Vac, 50–60 Hz or 4 “D” cell batteries
Battery Life	Typically 120 hours with alkaline batteries (battery condition can be checked on meter)
Temperature Range	-20 to 50 °C (-4 to 122 °F) May be certified to operate from -40 to 65 °C (-40 to 150 °F)
Size (H x W x L)	21.6 x 12.7 x 21.6 cm (8.5 x 5 x 8.5 in.) (excluding handle)
Weight	3.4 kg (7.5 lb), including battery

Optional Printer Specifications

Can be set up to provide date/time stamp on each line

Power	Comes with 120 Vac wall transformer, outputs 9 Vac
Speed	33 lines per minute
Paper Roll	Standard 5.7 cm (2.25 in.) wide calculator paper
Ribbon Life	200,000 characters
Replacement Ribbon	Epson HX-20 cartridge
Size (H x W x L)	5.1 x 10.3 x 11.4 cm (2.0 x 4.05 x 4.5 in.)

Options

Option	Description	Part Number
Model 180-8	Shielded alpha-beta-gamma sample counter head.	47-1549
Model 243	Shielded well gamma sample counter head.	47-1621
Printer	Printer with power adapter, printer paper, cable, and driver software CD.	4167-386
Sample Planchets	Set of 500 aluminum or stainless steel sample planchets.	Depends on material.

Description	Part Number
Meter Assembly (before 2001)	4164-175
Meter Assembly (2001 and after)	4167-302
Replacement LEDs	07-6342