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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28
Nov
2018
installing combustible gas detector on public safety
1. Provide key data for production and management departments From the perspective of production and some gas management departments, the use of combustible gas detectors is an in
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05
Nov
2018
GVDA GD68 combustible gas detector
The combustible gas detector is a detector that responds to the concentration of single or multiple combustible gases. There are two types of combustible gas detectors: catalytic t
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25
Oct
2018
The function of combustible gas detector
when the measured gas or liquid volatilizes in the air, the detector will generate an electrical signal proportional to the measured gas concentration in the air, and the signal wi
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10
Oct
2018
Technical data of Combustible gas detector
Technical data Sensor: Gas-sensitive semi-conductor Reaction range:>50PPM (methane) Warm-Up Time: Approx. 30 sec Reactions time: <=500PPM: Approx. 5sec >500PPM: Appr
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30
Aug
2018
maintaining of Combustible gas detector GD68
Clean the sensor head: If dirty, clean the sensor head with a soft dry cloth. Cleaning the housing: If dirty, clean the housing with a damp cloth (soap solution). Do not use a
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11
Aug
2018
Safety content of combustible gas detection
Never store the product together with solvents, acids or other corrosive substances. Carry out only repair and maintenance work described in the instruction manual. Observe the
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31
Jul
2018
features of Dissolved Oxygen Detectors
The dissolved oxygen meter has the characteristics of easy installation, long calibration period (3~4 months), insensitivity to other substances, etc., and can monitor the use of t
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20
Jul
2018
how Dissolved Oxygen Detectors Work
The oxygen content in water can fully show the degree of water self-purification. For biological treatment plants using activated sludge, it is very important to understand the oxy
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09
Jul
2017
Dissolved oxygen detector
The dissolved oxygen meter is a device for measuring dissolved oxygen in water. The working principle is that oxygen is reduced by the working electrode through the diaphragm, and
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30
Jun
2018
the Waterproof Dissolved Oxygen Meter
It only takes a few minutes to complete the calibration of the instrument. All operations have been simplified to simply place the sensor probe in saturated air and press a single
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15
Jun
2018
Product Features of Dissolved Oxygen Meter
Can test pH/ORP, dissolved oxygen, easy to carry, completely waterproof, easy to use; Low power consumption, the battery can work continuously for 2000 hours; Fully functional an
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02
Jun
2018
Dissolved Oxygen Meter
According to different concentrations, separator electrodes are divided into two types: polarographic and galvanic. The polarographic diaphragm electrode uses silver-silver chlorid
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22
May
2018
Precautions for the use of illuminometers
Precautions for use: When using, you must pay attention to avoid receiving strong light, because the photocell cathode is exposed to strong light for a long time, which will cause
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10
May
2018
Scope of application of light meter
1. Application in general public places In order to ensure that people can live under suitable lighting, my country has formulated sanitary standards for indoor (including public
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29
Apr
2018
What is lux meter
Illuminance meter (or lux meter) is a special instrument for measuring illuminance. It is to measure the degree to which the object is illuminated, that is, the ratio of the lumino
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18
Apr
2018
how to use the light meter
If only "1" is displayed on the left end of the display, it means that the illumination is excessive, and you need to press the range key (⑧ key) to adjust the measurement multipli
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09
Apr
2018
Measuring principle of illuminometer
Photovoltaic cells are photoelectric elements that directly convert light energy into electrical energy. When the light hits the surface of the selenium photocell, the incident lig
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30
Mar
2018
introduction of Ulstrasonic thickness gauge
Ultrasonic Thickness Gauge This unit is an intelligent handheld product, which adopts ultrasonic measuring principle, and is controlled by micro processor, provides quick and preci
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22
Mar
2018
How Metal Detectors Work!
How it works: The metal detector uses the principle of electromagnetic induction and uses a coil through which alternating current passes to generate a rapidly changing magnetic fi
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10
Mar
2018
Detecting method of metal detector
The use of this detector can detect is not buried deep mineral deposits, including native gold, gold, gold, and other various rich sedimentary sand. Detection of natural gold nugge
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