DURRIDGE RAD7 real-time radon and thoron monitor using alpha spectrometry, for indoor air, soil gas and water radon tests.
Overview
The RAD7 continuous radon detector is a real-time radon and thoron monitor using an internal scintillation chamber with alpha spectrometry. It measures the peaks of the radon daughter Po-218 and the thoron daughter Po-216 for fast, independent quantitation. It has a built-in pump, rechargeable battery and infrared wireless printer, reaches the EPA action level of 4 pCi/L within 2 hours at 10% relative humidity, and is widely used in indoor air quality testing, underground space radiation assessment and environmental monitoring.
Applications
• Indoor air quality testing in residential and commercial buildings
• Underground space and basement radiation assessment
• Environmental monitoring and public health investigation
• Building inspection and real estate due diligence
Features
• Rechargeable battery for extended field operation
• Robust construction suitable for both laboratory and field use
• Compliant with relevant Chinese and international standards
• Complete with calibration certificate and operation manual
Technical Specifications
| Item | Specification |
| Principle | scintillation chamber alpha spectrometry |
| Measured | radon (²²²Rn) and thoron (²²⁰Rn) in air |
| Range | 4–750,000 Bq/m³ (0.1–20,000 pCi/L) |
| Sensitivity | 0.5 cpm/(pCi/L) (monitor) |
| Response | 95% in 13 min |
| Background | ~0.2 Bq/m³, immune to ²¹⁰Pb |
| Modes | monitor, sniff, grab |
| Built-in | pump, rechargeable battery, IR printer |
| Data storage | ~1000 readings |
| Interface | RS-232/USB; Capture software |
| Weight | approx. 4.35 kg (9.6 lb) |
| Power | 12 V DC rechargeable battery |
| Options | water radon (RAD H2O/AQUA), soil probe |
| Applications | indoor radon, building acceptance, groundwater, volcanic/uranium geology, radiation assessment |
Standards
EPA 520, GB/T 14582, ANSI/AARST
Standard Delivery
• Main instrument unit
• Power cable / charger
• Operation manual
• Carrying case
• Calibration certificate
FAQ
Q1: What standards does the DURRIDGE RAD7 Continuous Radon Detector comply with?
A1: The DURRIDGE RAD7 Continuous Radon Detector is designed and manufactured in accordance with relevant Chinese national (GB) and industry standards, as well as applicable international standards. A calibration certificate is provided with each unit.
Q2: How often should the DURRIDGE RAD7 Continuous Radon Detector be calibrated?
A2: We recommend annual calibration by iRoad authorized technicians. For high-frequency use, semi-annual calibration is advised. The instrument is supplied with a factory calibration certificate.
Q3: What is the lead time and do you provide training?
A3: Standard units are usually shipped within 7-15 working days. iRoad provides on-site installation and operator training for major equipment; remote video guidance is available for portable instruments.
Overview
The RAD7 continuous radon detector is a real-time radon and thoron monitor using an internal scintillation chamber with alpha spectrometry. It measures the peaks of the radon daughter Po-218 and the thoron daughter Po-216 for fast, independent quantitation. It has a built-in pump, rechargeable battery and infrared wireless printer, reaches the EPA action level of 4 pCi/L within 2 hours at 10% relative humidity, and is widely used in indoor air quality testing, underground space radiation assessment and environmental monitoring.
Applications
• Indoor air quality testing in residential and commercial buildings
• Underground space and basement radiation assessment
• Environmental monitoring and public health investigation
• Building inspection and real estate due diligence
Features
• Rechargeable battery for extended field operation
• Robust construction suitable for both laboratory and field use
• Compliant with relevant Chinese and international standards
• Complete with calibration certificate and operation manual
Technical Specifications
| Item | Specification |
| Principle | scintillation chamber alpha spectrometry |
| Measured | radon (²²²Rn) and thoron (²²⁰Rn) in air |
| Range | 4–750,000 Bq/m³ (0.1–20,000 pCi/L) |
| Sensitivity | 0.5 cpm/(pCi/L) (monitor) |
| Response | 95% in 13 min |
| Background | ~0.2 Bq/m³, immune to ²¹⁰Pb |
| Modes | monitor, sniff, grab |
| Built-in | pump, rechargeable battery, IR printer |
| Data storage | ~1000 readings |
| Interface | RS-232/USB; Capture software |
| Weight | approx. 4.35 kg (9.6 lb) |
| Power | 12 V DC rechargeable battery |
| Options | water radon (RAD H2O/AQUA), soil probe |
| Applications | indoor radon, building acceptance, groundwater, volcanic/uranium geology, radiation assessment |
Standards
EPA 520, GB/T 14582, ANSI/AARST
Standard Delivery
• Main instrument unit
• Power cable / charger
• Operation manual
• Carrying case
• Calibration certificate
FAQ
Q1: What standards does the DURRIDGE RAD7 Continuous Radon Detector comply with?
A1: The DURRIDGE RAD7 Continuous Radon Detector is designed and manufactured in accordance with relevant Chinese national (GB) and industry standards, as well as applicable international standards. A calibration certificate is provided with each unit.
Q2: How often should the DURRIDGE RAD7 Continuous Radon Detector be calibrated?
A2: We recommend annual calibration by iRoad authorized technicians. For high-frequency use, semi-annual calibration is advised. The instrument is supplied with a factory calibration certificate.
Q3: What is the lead time and do you provide training?
A3: Standard units are usually shipped within 7-15 working days. iRoad provides on-site installation and operator training for major equipment; remote video guidance is available for portable instruments.
