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    1. Structure and operating principle of pressure gauge 1.1 Structure   Outer rim: articulated to the case (10), holds the glass back (2) and the bezel (3). Glass: made from safety glass and transparent to make it easy to see the displayed watch indicator. Glass sealing ring: leak-proof, airtight, holds tight between glass (2) and case (10). Clock hands: thanks to the action of the movement (8) shows the correct pressure on the scale displayed on the dial (5). Digital display: contains scale, measuring lines and pressure units. Seal: used to pour oil into the watch to help lubricate, anti-vibration, anti-freeze, ... In addition, before putting the watch into use, it is necessary to cut off the upper part of the stopper so as not to seal the space inside the copper. lake, which equalizes the pressure inside the watch. Bourdon tube: expands by pressure and acts on the transducer (8). Let the fluid to be measured in The movement: consists of many parts assembled with the function of converting the elastic state of the bourdon tube (7) into the rotation of the clock hand (4). And "signaling" the clock hands to work Connection: threaded to connect to the pipe, draining the fluid from the pipe into the bourdon tube (7). Case: Is the outer part of the watch, designed with heat-resistant materials to prevent rust. Screws: used to mount and fix the display face. 1.2 Working principle   The fluid enters the meter through the connector (socket). The fluid continues to travel to tube C (bourdon tube) and expands the tube depending on whether the pressure is high or low. When the C-tube (bourdon tube) expands, it will act on the movement (Moverment), the moving part acts directly on the copper needle (Pointer). When the clock hand (Pointer) points to any line or number, with the unit on the dial (Dial), we can know the pressure level in the pipeline at the position of the clock. The accuracy of the clock is often not calibrated by the user's factory, each meter is calibrated by the manufacturer according to a certain range of measurements. But some new watch models now have the ability to calibrate. adjusted for users due to increased errors during use or corroded components. It is a summary of the process of converting the pressure in the pipeline into the measured value on the pressure gauge. 2. How to choose a pressure gauge 2.1 Selection by specifications Basic parameters for pressure gauge selection:   Pressure measuring range: a suitable pressure measurement range helps the meter to operate stably and ensures the life of the meter. So choose a gauge with a range in which the actual pressure reading where you want to install it is 30% to 70% of the gauge's range pressure. For example, the pipeline where you want to install a pressure gauge has a pressure value ranging from 4 to 6 bar, you should choose a gauge with a pressure range of 0 to 10 bar.    Measuring unit of the meter: choosing the meter unit is also an important step because if you choose the right unit you need to calculate and record during operation, it will help you avoid converting working units. increase the error as well as the risk of miscalculation.   Accuracy: the smaller the better, usually from ±1% to ±1.6%.   Connection type: need to determine the correct connection, thread type where you are going to install the meter to avoid losing time.   Overvoltage level: choosing the right overvoltage level saves money, protects the meter as well as ensures safety when working.  2.2 Selection by working environment Working environment greatly affects equipment:   Choose the right watch that is resistant to temperatures as well as sturdy enough to protect components if an accident occurs during work.   Choose a meter with vibration resistance or add oil if the piping system where the meter is installed has a lot of vibration during work.   Choose a meter with a suitable connection position for the meter to work most efficiently and easy to read parameters for the user.   It is also possible to choose a meter with the ability to add oil in case the meter operates at low temperatures, the oil helps to prevent freezing, if in a pipeline environment with high pressure fluctuations, the oil also helps lubricate the components. details like a movement.     Selecting the right pressure gauge will help increase the life of the meter as well as bring economic and productivity benefits to you. 3. Application     In the boiler industry, thermal oil furnace, energy     Production line system     Petroleum and gas processing, production and transmission systems     Water supply and drainage, fire protection, HVAC 


    Details such as safety glass, digital display, Clock hands and screws fixing the dial, watch case in both pressure gauges are the same in materials.




  • Flange Dimensions EN 1092-1 PN6 - PN100



    DIN Blind Flanges 2527 PN6 PN10 DIN No. of holes D b k d2 KG D b k d2 KG 10 4 75 12 50 11 0.38 90 14 60 14 0.63 15 4 80 12 55 11 0.44 95 14 65 14 0.71 20 4 90 14 65 11 0.66 105 16 75 14 1.01 25 4 100 14 75 11 0.82 115 16 85 14 1.23 32 4 120 14 90 14 1.18 140 16 100 18 1.81 40 4 130 14 100 14 1.39 150 16 110 18 2.09 50 4 140 14 110 14 1.62 165 18 125 18 2.88 65 4 160 14 130 14 2.14 185 18 145 18 3.65 80 4 190 16 150 48 3.43 200 20 160 18 4.61 100 4 210 16 170 18 4.22 220 20 180 18 5.65 125 8 240 18 200 18 6.1 250 22 210 18 8.13 150 8 265 18 225 18 7.51 285 22 240 22 10.49 175 8 295 20 255 18 10.41 315 24 270 22 14.11