Monitor 4EC Nuclear Gauge Survey Meter

Monitor 4EC Nuclear Gauge Survey Meter: Precision and Versatility in Radiation Detection

The Monitor 4EC is a compact, user-friendly, and general-purpose survey meter designed for precision and reliability. It is engineered to detect alpha, beta, gamma, and x-ray radiation across three selectable ranges, making it an indispensable tool for a wide variety of applications, from regulatory inspections to environmental monitoring.

Key Features:

• Multi-Radiation Detection: Capable of detecting alpha, beta, gamma, and x-rays, providing comprehensive survey capabilities in a single device.
• Linear Gamma and X-Ray Response: The Monitor 4EC is specifically designed to offer a more accurate, linear reading for gamma and x-rays above 40 keV, ensuring reliable and precise measurements.
• Clear Audio-Visual Alerts: For immediate detection awareness, a red count light flashes and an audible beep sounds with each radiation event detected. The internal beeper can also be switched off for silent operation when discretion is needed.
• Durable and Sensitive Detector: It features a halogen-quenched, energy-compensated Geiger-Müller (GM) tube with a 2mm tin filter on the sidewall. The thin mica window (1.5-2.0 mg/cm² thick) enhances its sensitivity to various radiation types.
• High-Saturation Resistance: The meter is built with anti-saturation circuitry that will hold at full scale in radiation fields up to 100 times the maximum reading, preventing overload and ensuring meter integrity in high-radiation environments.

Detailed Specifications:

• Detector: Halogen-quenched, energy-compensated GM tube.
• Detection Capability:
  • Alpha: Detects down to 2.5 MeV, with a typical detection efficiency greater than 80% at 3.6 MeV.
  • Beta: Detects at 50 keV with approx. 35% efficiency and at 150 keV with approx. 75% efficiency.
  • Gamma & X-Rays: Detects down to 10 keV through the window and a minimum of 40 keV through the case sidewall.
• Operating Range:
  • 0-0.5, 0-5, 0-50 mR/hr
  • 0-500, 0-5,000, 0-50,000 CPM
• Accuracy: ±10% of full scale (referenced to Cs-137).
• Gamma Sensitivity: 1000 CPM/mR/hr.
• Energy Response (Gamma/X-Ray):
  • Within +61% or -26% over the range of 40 keV to 100 keV.
  • Within +35% or -17% over the range of 100 keV to 1.3 MeV.
• Power: Powered by a single 9-volt alkaline battery, offering an impressive battery life of up to 2,000 hours at normal background levels.
• Operating Conditions: Functional in temperatures from -20° C to 55° C (-4° F to 131° F).
• Construction:
  • Dimensions: 145 x 72 x 38 mm (5.7 x 2.8 x 1.5 inches).
  • Weight: 198.1 grams (7 oz.) without the battery.

What's Included:

Each Monitor 4EC survey meter comes complete with a protective carrying case for easy transport and storage, a 1-year limited warranty, and is CE marked, signifying compliance with European health, safety, and environmental protection standards.