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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03
May
2019
![[[TitleNews]]](/uploads/202225961/i202201221449235881550.jpg)
DC voltage regulator (DC Power supply)
lso known as DC voltage regulator. Its power supply voltage is mostly AC voltage. When the voltage of the AC power supply voltage or the output load resistance changes, the direct
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29
Apr
2019
![[[TitleNews]]](/uploads/202225961/i202201221446088146680.jpg)
The necessity of using regulated power supply
With the rapid advancement of society, the number of electrical equipment is increasing day by day. However, the aging and development of power transmission and distribution facili
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18
Apr
2019
![[[TitleNews]]](/uploads/202225961/i202201221204010728943.jpg)
Stabilized voltage supply
It is an electronic device that can provide stable AC or DC power for the load, including two categories of AC regulated power supply and DC regulated power supply. When the grid
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28
Mar
2019
![[[TitleNews]]](/uploads/202225961/i202201221201122336606.jpg)
Technical index of regulated power supply
(1) Voltage regulation coefficient (voltage regulation rate) SU: Under the condition that the load current and ambient temperature remain unchanged, the relative change of the inpu
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15
Mar
2019
![[[TitleNews]]](/uploads/202225961/i202201221148500549172.jpg)
characteristic index of regulated power supply
The characteristic index refers to the parameters indicating the working characteristics of the regulated power supply, such as input, output voltage and output current, voltage ad
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25
Feb
2019
![[[TitleNews]]](/uploads/202225961/i202201221144212778669.jpg)
Switching power supply
A switching power supply is a power supply that uses modern power electronics technology to control the time ratio of switching transistors on and off to maintain a stable output v
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05
Feb
2019
![[[TitleNews]]](/uploads/202225961/i202201221139370747124.jpg)
Power Supply Type
There are many types of power supplies, and a wide variety of regulated power supplies can be classified from different angles. According to the connection between the voltage sta
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30
Jan
2019
![[[TitleNews]]](/uploads/202225961/i202201221136494333738.jpg)
Introduction of DC power supply
The input of the DC power supply is the mains voltage of 220V. Under normal circumstances, the value of the required DC voltage is very different from the effective value of the gr
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11
Jan
2019
![[[TitleNews]]](/uploads/202225961/i202201221132241893602.jpg)
DC Power supply
The DC stabilized power supply is an energy conversion circuit, which converts 220V, 50Hz alternating current into direct current, which is an important part of the electronic circ
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25
Dec
2018
![[[TitleNews]]](/uploads/202225961/i202201221122338081608.jpg)
features of digital level
A measuring level is a measuring instrument that measures the inclination of a plane to the horizontal. The measured tilt angle can be displayed as an angle (unit: º) on the L
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12
Dec
2018
![[[TitleNews]]](/uploads/202225961/i202201221117231079878.jpg)
Principle of digital level
The angle sensor is sensitive to the horizontal inclination angle, and the inclination angle is directly displayed on the digital tube in the form of numerical value or uploaded to
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28
Nov
2018
![[[TitleNews]]](/uploads/202225961/i202201221113548472598.jpg)
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
![[[TitleNews]]](/uploads/202225961/i202201221111117827703.jpg)
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
![[[TitleNews]]](/uploads/202225961/i202201221108186386610.jpg)
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
![[[TitleNews]]](/uploads/202225961/i202201221106122358017.jpg)
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
![[[TitleNews]]](/uploads/202225961/i202201211716239483431.jpg)
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
![[[TitleNews]]](/uploads/202225961/i202201211713260053936.jpg)
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
![[[TitleNews]]](/uploads/202225961/i202201211710489678987.jpg)
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
![[[TitleNews]]](/uploads/202225961/i202201211708243199134.jpg)
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
![[[TitleNews]]](/uploads/202225961/i202201211651266403730.jpg)
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