Model 2200 Scaler Ratemeter
Ludlum Measurements, Inc. Page 1 March 2016
Introduction
The Model 2200 Scaler Ratemeter is a self-contained counting instrument
designed for operation with scintillation, proportional, or GM (Geiger Muller)
detectors. Counting information is displayed both as a scaler count on the LED
(light-emitting diode) display and as an averaged count rate on the analog scaler.
The instrument can be powered by 95-250 Vac, 50-60 Hz, or by four “D” cell
batteries. The unit is complete with a voltage-sensitive preamplifier, linear
amplifier, electronic timer, and detector high-voltage power supply. A single-
channel analyzer is also featured in this unit for use in gamma spectrum analysis.
The analyzer may be switched on or off, allowing gross window counting. Ten-
turn potentiometers are supplied for threshold, window, and high-voltage
controls.
An RS-232 serial port is provided, which can be attached to a computer or
optional printer. A computer interface cable and software is provided to
start/stop and record counts.
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