Contact Us
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Tel: +8618822802390
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E-mail: admin@gvda-instrument.com
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WhatsApp: 8618822802390
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Add: Room 610-612, Huachuangda Business Building, District 46, Cuizhu Road, Xin'an Street, Bao'an, Shenzhen
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15
Nov
2017
Maintenance of infrared thermometers
1. Replace the battery To install or replace the battery, open the battery compartment as shown in Figure 2 and insert the battery. 2. Clean the lens Use clean compressed air to
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08
Nov
2017
Introduction of infrared thermometer
Infrared thermometer consists of optical system, photodetector, signal amplifier, signal processing, display output and other parts. The optical system concentrates the infrared ra
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31
Oct
2017
4 in 1 Multi gas detector ST8900
SMART SENSOR 4 IN 1 MULTI GAS DETECTOR ST8900 AS8900 SMART SENSOR Multi-Gas Meter is a portable and handheld instrument that is capable to use continuously monitoring four differen
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16
Oct
2017
How stay away from electromagnetic radiation?
Many electrical appliances in life contain electromagnetic radiation, so how can we prevent electromagnetic radiation? How to stay away from the harm of electromagnetic radiation?
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06
Oct
2017
What radiation are pregnant women most afraid of?
1. The radiation that pregnant women are most afraid of mainly comes from the hospital. If they fall ill without knowing that they are pregnant, they go to the radiology department
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27
Sep
2017
Hazards of Electromagnetic Radiation
1. It is one of the causes of childhood leukemia. Medical research has proved that long-term exposure to high electromagnetic radiation will cause changes in blood, lymph and cell
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15
Sep
2017
Features of Electromagnetic radiation detector
1. Portable design, light weight, easy to operate with one hand, easy to move or measure on site 2. Using innovative patented circuit components to ensure that all device performa
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07
Sep
2017
Electromagnetic radiation detector
Electromagnetic radiation detectors are mainly used for radiation measurement of electrical appliances, high-voltage lines, base stations, etc. in life, which can effectively help
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31
Aug
2017
The Application of Radiation Detector
R-PD type intelligent х-γ radiation meter is widely used in medical treatment, disease control, environmental protection, metallurgy, petroleum, chemical industry, radioactive labo
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25
Aug
2017
What is radiation detector?
Radiation detectors are instruments used to measure high-energy and low-energy x and gamma rays. R-PD type intelligent х-γ radiation meter uses highly sensitive scintillation cryst
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16
Aug
2017
Portable Oxygen Detector
The oxygen detector is a portable oxygen detector powered by a battery. It is based on the measurement principle of an electrochemical sensor, adopts imported high-performance elec
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10
Aug
2017
How many ppm of ammonia harmful to human body
After being inhaled into the lungs, ammonia easily enters the blood through the alveoli, binds with hemoglobin, and destroys the oxygen transport function. After inhaling a large a
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02
Aug
2017
Application of ammonia detector in aquaculture
The application of ammonia gas detector in the aquaculture industry chain has become more and more extensive with the expansion of domestic aquaculture scale. Chicken industry:
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26
Jul
2017
Application of Ammonia Gas detector
Ammonia gas detector is an electronic instrument used to detect the concentration of ammonia gas in the environment, which can be carried around. When it is detected that the conce
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19
Jul
2017
The working principle of ammonia gas detector
The air and the gas to be measured diffuse to the sensing electrode through the diffusion membrane. The control circuit maintains a voltage between the sensing electrode and the co
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12
Jul
2017
The principle of ammonia gas detector
The detection principle of ammonia gas detector generally includes electrochemical or semiconductor principle sensors. The sampling methods are divided into pump suction and diffus
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05
Jul
2017
best indicator of air quality in chicken house
High levels of CO2 can cause lethargy and reduced weight gain in the flock, so it should be kept below 5,000ppm (ideally < 3,500ppm). High concentrations of ammonia will reduce fee
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30
Jun
2017
carbon dioxide detectors Operating procedures
1. The calibration and calibration personnel must be trained, understand the principle and performance of the instrument, be proficient in operating skills, and hold a certificate
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25
Jun
2017
Operating skills of carbon dioxide detector
The carbon dioxide detector should be used in places with many water vapor and water droplets (relative humidity at 90%). Otherwise, if the water vapor is too high for a long time,
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13
Jun
2017
Product introduction of carbon dioxide detector
The carbon dioxide detection technology uses a carbon dioxide gas detector. The carbon dioxide detector accurately detects carbon dioxide. It adopts an infrared imported carbon dio
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