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S.International-MC1K Analog Radiation Detector

Analog Radiation Detector – MC1K is a reliable, wide-range instrument for measuring gamma and x-ray radiation, designed for personal protection, industrial inspection, and general radiation surveying.

  • Wide measurement range up to 1000 mR/hr with selectable X1, X10, X100, and X1000 ranges
  • Energy-compensated GM tube for accurate, linear gamma and x-ray detection
  • Audible alert with optional silent operation and strong anti-saturation protection
  • Long battery life up to 2,000 hours, lightweight and portable for field use

Description

The Analog Radiation Detector MC1K is a rugged and reliable survey instrument designed for accurate detection of gamma and X-ray radiation across an expanded range of up to 1000 mR/hr. Using an energy-compensated, halogen-quenched Geiger-Müller (GM) tube, it delivers a linear and stable response from 40 keV and above, making it suitable for both low-level background monitoring and high-radiation field measurements. With selectable range settings (X1, X10, X100, X1000) and clear analog indication, the MC1K provides dependable real-time radiation readings in demanding environments.

Designed for safety and field usability, the MC1K includes an audible beeper alarm for immediate radiation awareness, with the option for silent operation. Its anti-saturation circuitry protects the meter in extremely high radiation fields, while long battery life of up to 2,000 hours ensures extended operation without frequent replacement. Lightweight, durable, and easy to carry, the MC1K is ideal for general radiation surveys, personal protection, industrial gauge inspection, X-ray shielding checks, and locating lost radioactive sources.

Specification

Detector & Performance

Specification Details
Detector Energy compensated, halogen-quenched GM tube
Operating Range X1: 0 – 1 mR/hr (0 – 0.01 mSv/hr)
X10: 1 – 10 mR/hr (0 – 0.1 mSv/hr)
X100: 5 – 100 mR/hr (0 – 1 mSv/hr)
X1000: 50 – 1000 mR/hr (0 – 10 mSv/hr)
Energy Sensitivity (MC1K) Detects gamma & X-rays down to 40 keV; flat response above 40 keV
Normal background ≈ 4 CPM
Accuracy Typically ±15% of reading (¹³⁷Cs)
Anti-Saturation Meter holds at full scale in fields up to 100× maximum reading

Controls & Indicators

Specification Details
Range Switch X1, X10, X100, X1000
Audio Indicator Internal beeper (can be turned off for silent operation)

Power & Environmental

Specification Details
Power Requirements 9-volt alkaline battery
Battery Life Up to 2,000 hours at normal background radiation
Temperature Range −20°C to +55°C (−4°F to +131°F)

Physical Characteristics & Outputs

Specification Details
Outputs 3.5 mm jack with pulse output
Weight 217 g (7.7 oz)
Size 209 × 71 × 50 mm (8.2 × 2.8 × 1.9 in.)

Options & Warranty

Specification Details
Options Carrying case (included), optional Observer Serial Software
Warranty 1 year limited warranty

Applications

  • Expanded Range up to 1000 mR/hr,
  • Linear Response needs with Energy Compensation,
  • Checking accelerator & x-ray shielding for leakage,
  • Checking industrial gauges; such as moisture, density, or level gauges containing Cesium-137,
  • Locating lost sources,
  • Personal protection,
  • General surveying

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Please fill in the request form below and one of our engineers will contact you to discuss your system requirements and if we can help, our typical response time is within 1 – 3 working day.