Ludlum Model 2224 Alpha – Beta Scaler Ratemeter

Category: Characterization > Monitors > Radiation Monitors
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The Ludlum Model 2224 Alpha-Beta Scaler Ratemeter is designed for simultaneous alpha and beta radiation counting, offering a versatile and user-friendly tool for radiation measurement. This device features a built-in 6-digit LCD scaler with selectable display options for alpha, beta, or combined alpha/beta counts. It offers a wide total counting range from 0 to 500,000 counts per minute (cpm), making it suitable for various applications where alpha and beta discrimination is essential. Compatible with proportional and dual phosphor scintillation detectors, the Model 2224 provides an adjustable high voltage range from 200 to 2000 volts and an internal threshold control for precise detection. The device's easy-to-read meter, audio feedback, and adjustable counting time provide further flexibility for a wide range of radiation monitoring tasks.

Benefits

The Ludlum Model 2224 offers several advantages, including its simultaneous counting for both alpha and beta radiation, which enhances efficiency in environments where both types of radiation need to be monitored. The built-in 6-digit LCD scaler allows for accurate digital readings, and the selectable counting modes (alpha only, beta only, or both) provide versatile measurement options. Its robust construction, long battery life of over 350 hours with alkaline batteries, and adjustable threshold settings make it highly customizable for specific detection needs. The audible feedback through a built-in speaker with volume control further aids users in real-time monitoring. Additionally, the compact and durable design ensures portability and ease of use in various environments, with a wide operating temperature range and an externally accessible battery compartment for convenience.

Limitations

While the Ludlum Model 2224 provides reliable performance, its detection capabilities are limited to alpha and beta radiation, and it may not be suitable for gamma radiation detection. Additionally, the device is sensitive to overload conditions, which can be indicated by a red lamp on the meter and a full-scale reading if the detector saturates. The high voltage adjustment, although accessible from the front, requires some expertise for proper configuration. The unit's relatively high weight (3.5 lbs with batteries) may be a factor in applications that require frequent mobility. Finally, although it offers a wide range of customizable settings, the Model 2224 may require some time to adjust settings for optimal performance in varying radiation environments.

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