Handheld Marble Tester LCD Digital Display Radon Detection Range Radon Long Term Average

• Customization: Available
• After-sales Service: 1 Year
• Warranty: 1 Year
• Model NO.: DM120A
• Brand: Dienmern
• Customized: Customized
• Portable: Portable
• Certification: CE, RoHS
• Gas: Rn
• Type: Other
• Material: ABS
• Display: LCD Screen
• Product Name: Radon Gas Detector
• Certificates: CE RoHS
• Sampling Time: 1.5 Seconds
• Power Source: 2*1.5V AAA Battery (Not Included)
• Transport Package: Neutral Box
• Specification: 154*80*34(mm)
• Origin: Shenzhen, China
• HS Code: 9027100090

Product Description

Product Parameters

item	Radon detector
Measuring Item	Radon long term average Radon short term average
Display	LCD screen display
Certificates	CE RoHS
Warranty	1 year
Power Source	2*1.5V AAA Battery (Not Included)
Technology	Ionic Technology
Standard accessory	Main Unit * 1, mini screwdriver * 1, screw * 2 English manual * 1, suitcase box * 1

Product Description

Our radon detector is an efficient, portable device capable of monitoring radon concentrations in real time. Radon is a colorless, odorless, radioactive gas that can cause lung cancer and respiratory problems when exposed to high concentrations over a long period of time.

Therefore, it is critical to use this instrument for radon monitoring in environments such as homes, building construction, schools, and public spaces. The device is easy to operate, just turn it on, place it in the detection area, and obtain radon concentration data in real time. Radon can enter buildings through crevices in floors, walls, and pipes, and detecting and controlling radon levels is important to ensure a safe living environment. With their ease of use and efficiency, our radon detectors are ideal for keeping your home and work environment safe.

Company Profile

Langdeli Technology Co., Ltd. is a professional manufacturer with 10 years of experience in producing testing instruments, committed to providing customers with high-quality and high-performance testing instruments. The company has advanced production equipment, a professional R&D team and sales team, as well as its own factory, production workshop, and office buildings.

 

Since its establishment, the company has been dedicated to the research and development, production, and sales of testing instruments. We have established strategic partnerships with multiple large companies to provide customized testing instrument solutions. At the same time, we actively explore domestic and international markets, providing high-quality products and services for enterprises and individual users.

 

The company has a professional R&D team, constantly following up on the latest developments in domestic and foreign testing technologies, and applying the latest technologies to products. Our products cover multiple fields such as environmental testing, food safety, medical and health, including air quality detectors, water quality detectors, soil
detectors, noise detectors, temperature and humidity detectors, combustible gas detectors, radiation monitors, alcohol measuring instruments, etc.

 

As a high-tech enterprise, Langdeli Technology attaches great importance to technological innovation and quality improvement. At the same time, we also attach great importance to intellectual property protection and have multiple invention patents and utility model patents.

 

The company has a comprehensive sales team and channel system, which can quickly respond to customer needs and provide professional pre-sales consultation and after-sales service. Our products have been widely used in government agencies, environmental protection departments, health supervision departments, food enterprises and other fields, and have received high recognition and praise from users.

 

In the future, Langdeli Technology Co., Ltd. will continue to be committed to providing high-quality and high-performance testing instruments to provide users with higher quality products and services. We will continue to innovate and make progress, striving tirelessly to become a leading global manufacturer of testing instruments. We believe that through our efforts and innovation, we can become your trusted partner.

 

Our Production line:

We are well aware that product quality is the lifeline of a company, so we always adhere to high-quality and high standard production processes. We have a professional quality inspection team that strictly controls every step from raw material procurement to production processes. We focus on the quality and performance of our products, continuously optimizing production processes and quality management to ensure that every product meets national standards and certification standards.
 

Our Facilities Includes (not all):
   

 

 

FAQ

Q1:What is radon gas?
Answer:
Radon gas is a radioactive noble gas primarily originating from the decay of uranium in soil and rock formations. It typically
infiltrates buildings through ground penetration. With a higher density than air, radon tends to accumulate in lower
areas,particularly near floor surfaces.

Q2: Does the radon concentration measured at floor level by the detector equal airborne radon concentration?
Answer:
No. Radon concentrations near floor surfaces may exceed those at elevated positions due to radon's higher density, which causes
gravitational settling. Measurements taken directly on the floor reflect source-proximal concentrations, whereas central or
elevated areas of the room may exhibit lower values.

Q3: How long does the device require to display accurate readings?
Answer:
Measurement duration varies by operational mode:

Rapid Mode: Delivers stabilized readings within 48 hours of initial activation.

Long-Term Mode: Requires continuous monitoring for at least 7 days to establish spatial average concentrations.

Q4: Where should the detector be positioned?
Answer:

Floor-level measurement: Place the device horizontally on the floor.
Wall-proximate measurement: Mount the device vertically on the wall.

Breathing-zone measurement: Position the device approximately 1 meter above floor level.
Note: Avoid areas with airflow disturbances such as air conditioner vents or radiators.

Q5: Can this device test radon in water?
Answer:
This instrument is exclusively designed for air medium analysis. For aqueous radon testing,
use dedicated hydro-radon testing equipment to prevent sensor damage.

Q6: At what concentration threshold should corrective action be taken?
Answer:
Per WHO safety guidelines:
2.70 pCi/L (100 Bq/m³): Implement mitigation measures (e.g., enhanced ventilation, crack sealing).
8.10 pCi/L (300 Bq/m³) : Engage certified professionals for structural remediation.

Q7: Why do radon readings exhibit sudden fluctuations?
Answer:
As a gaseous radioactive element, radon concentrations are dynamically influenced by:
Atmospheric pressure changes
Temperature/humidity variations
Ventilation rate shifts (e.g., door/window operation)
Intermittent soil gas infiltration

Resolution:
Maintain continuous monitoring for ≥48 hours
Conduct critical measurements only after maintaining closed conditions for 12 hours

Q8: When should manual calibration be performed?
Answer:
Initiate calibration under these conditions:
Following significant environmental condition changes
Upon detection of abnormal measurement deviations

 

Precautions
To ensure accurate data reliability and prolong device service life, strictly adhere to the following operational protocols:
I. Pre-Detection Preparation
1. Environmental Sealing Close all windows, doors, ventilation systems, and air conditioning for at least 12 hours prior to detection to stabilize indoor air conditions.Seal potential radon entry points (e.g., floor drains, sewer openings).
2. Device Placement Location: Prioritize placement in frequently occupied areas (e.g., bedrooms, living rooms). Avoid high-humidity or airflow-disturbed zones (e.g., kitchens, bathrooms). Stability: Place the detector on a flat, stable surface to avoid vibrations or tilting.

II. Operational Protocols During Detection
1. Environmental Control Prohibit opening windows, doors, fans, or air purifiers during detection. Avoid smoking, combustion activities, or aerosol sprays in the detection area.
2. Device Management Long-term detection (≥3 months): Ensure uninterrupted power supply. Relocating or interrupting the device during operation is strictly prohibited. Short-term detection: Strictly adhere to the preset duration (e.g., 48 hours). Early termination is not permitted. Seal potential radon entry points (e.g., floor drains, sewer openings).

III. Device Maintenance and Interference Mitigation
1. Protective Measures Avoid contact with water, oil, dust, or direct sunlight. Clean only with a dry cloth. Keep the device away from strong electromagnetic fields (e.g., microwaves, transformers) and extreme environments (>40°C or <10°C).
2. Calibration Requirements Manual calibration: When the environment changes greatly or the reading is abnormal, please calibrate manually. Post-impact recalibration: Immediate recalibration is mandatory after severe shocks or drops. Storage: Remove batteries and store in a dry, cool environment if unused for extended periods.

IV. Data Interpretation and Response
1. Data Validity Short-term results are for reference only; long-term data (≥3 months) more accurately reflect.