CESTSEN Releases the MR-50L/X Fixed Nuclear Radiation Detector for Continuous Online Monitoring

CESTSEN has introduced the MR-50L/X fixed nuclear radiation detector, a professional-grade online radiation monitor engineered for facilities that must keep radiation levels under continuous, verifiable control. Unlike handheld survey meters that only provide spot checks, the MR-50L/X is a permanently installed instrument that measures alpha, beta, gamma and X-ray radiation around the clock, converts counts into dose-rate readings, and pushes the data to a management platform through an RS485 Modbus-RTU interface. For buyers sourcing radiation safety equipment, this means a single device that replaces manual patrols with automated, traceable monitoring.

Why Continuous Nuclear Radiation Detection Matters

Regulatory pressure on radiation safety has increased across medical, industrial and environmental sectors. Spot measurements taken once per shift leave long blind windows, and a delayed alarm can mean unnecessary exposure for staff and the public. The MR-50L/X closes that gap by combining a mica end-window Geiger counter with an energy-compensated tube, so low-energy alpha and beta contamination is detected while gamma and X-ray dose rates are measured with a relative inherent error of about plus or minus 15 percent. A green indicator flashes once for every ionizing event, and the built-in sound and vibration alarm triggers the moment a user-defined threshold is exceeded.

Where the MR-50L/X Radiation Detector Is Deployed

• Environmental online monitoring stations that report ambient dose rate to a central platform
• Medical protection in radiology, nuclear medicine and radiotherapy departments
• Solid waste treatment and recycling plants screening incoming scrap for radioactive sources
• Customs inspection and quarantine checkpoints screening vehicles and cargo
• Industrial safety production around isotope gauges, NDT operations and welding sources
• Stone and building material radioactivity testing in quarries, labs and showrooms

Key Features at a Glance

1. 60 mm x 42 mm large LCD with four-digit dot-matrix display and MAX value retention for peak-dose review
2. Cumulative dose monitoring with acousto-optic secondary alarm for unattended operation
3. Wide operating temperature range of -20 to 60 degrees Celsius for harsh indoor and outdoor sites
4. RS485 output with Modbus-RTU protocol for direct connection to SCADA, PLC or cloud dashboards
5. Manually configurable alarm threshold, so each site defines its own safe operating envelope
6. Optional GPRS wireless transmission for remote sites without wired network infrastructure
7. Compact 187 x 90 x 47 mm housing, approximately 400 g for the MR-50X and 310 g for the MR-50L

Technical Specifications

Certification and Traceability

Every MR-50L/X nuclear radiation detector ships with a radiation safety license, a test report issued by a CNAS accredited certification body, and CE certification. The instrument supports both traditional units and the international system of units, reporting CPS and total counts as the most direct measurement, with mR/h and uSv/h derived through the cesium-137 conversion factor. This dual-unit capability simplifies paperwork for projects that must satisfy both local regulators and international clients.

Integration, Ordering and Delivery

The RS485 Modbus-RTU output allows the detector to be wired directly into an existing DCS, PLC or environmental monitoring platform, and the optional CESTSEN IoT cloud platform gives operators mobile and desktop access to live readings, historical curves and alarm logs. Commercial terms are designed for both pilot projects and volume rollouts: minimum order quantity of one piece, T/T payment, supply ability of 300 pieces per month, and delivery within 5 to 15 working days. Units are packed in aluminium cases for safe international transport.

About CESTSEN

CESTSEN is a Shenzhen-based manufacturer of radiation detection instruments serving environmental monitoring, medical protection, customs inspection, industrial safety and building material testing customers worldwide. The MR-50L/X fixed nuclear radiation detector is part of a broader family of online monitors designed for system integrators, EPC contractors and distributors who need dependable hardware supported by export-ready documentation.