Rectangular bellows pressure gauge
Rectangular bellows pressure gauge is suitable for the boiler ventilation equipment corrode the copp…
Description：
Serve to connect YEJ - 101 seriesRectangular bellows pressure gaugeSuitable for boiler ventilation equipment corrode the copper alloy and neutral, no explosion danger of the micro pressure and negative pressure of the gas measurement.
Serve to connect YEJ - 121 series of rectangular bellows electric contact pressure gauge is suitable for boiler ventilation equipment corrode the copper alloy and neutral, no explosion danger of the micro pressure and negative pressure of the gas is measured with double two adjustment (double), in order to realize the type adjustment or transfinite alarm function.
Second, the working principle:
Serve to connect YEJ - 101 series of rectangular bellows pressure gauge is by measuring system (including joint, spring pipe, gear transmission mechanism), indicating part (including pointer and dial), watch case parts.Its working principle is based on the elastic element - bourdon tube deformation.When the measured medium is produced by the joint into the spring tube with side displacement, the displacement with the aid of connecting rod by gear transmission mechanism of pressure transmission and amplification, the pointer indicates that the pressure on the dial.
Applications:
Serve to connect YEJ - 101 series of rectangular bellows pressure gauge widely used in petroleum, chemical, metallurgical, power plants and other industrial departments or mechanical and electrical equipment of form a complete set of measuring various fluid pressure explosion hazard.
Four, the main features:
1, stable performance, high measurement precision, response speed faster.
2, measuring the total pressure, including gas and steam pressure.
3, the results of the measurement has nothing to do with the gas species, composition and properties.
4, in the process of the pressure, suction and deflated pressure gauge itself is very small, will not affect the measured pressure.
5, no high temperature parts, won't make the oil vapor.
6, if choose corrosion resistant materials, can measure the corrosive gas pressure.
7, firm structure, and sealing and makes the pipes easier to install.
8, easy operation, do not need to adjust, but need to check on a regular basis.
Five, the technical parameters:
Weight: 2 kg (101), 2.5 kg (121)
Electrical indicators: (serve to connect YEJ - 121)
Setting error: a small 2.5% of the whole range
An output contact capacity: ac non inductive load 3 a 220 v
Working power supply: AC 220 v
Power consumption: less than 5 w
Pressure interface: phi 8 (with 6 hose diameter phi)
Sixth, the installation of pressure gauge:
1, the installation position of pressure gauge should meet the requirements of the install state dial generally should not be placed, the discretion of the installation position should facilitate staff observations.
2, pressure gauge installed in the distance and pressure measuring point should be short, as far as possible to ensure the good sealing, can't leak phenomenon.
3, the installation of pressure gauge should be front-end buffer;To facilitate inspection, should be equipped with a shut-off valve at the bottom of the instrument;When the medium is dirty or pulse pressure, the filter can be used, buffer and regulated gas, etc.
Seven, regular maintenance/repair:
1, after a period of use, and pressure, pressure gauge movement deformation and wear, hard to avoid can appear some pressure gauge can produce all kinds of errors and failures.In order to guarantee the accuracy of its original without distortion, dissemination should be replaced in a timely manner, to ensure that the correct, safe and reliable.
2, pressure gauges need to clean them regularly.Because the interior of the pressure gauge is not clean, will increase the wear parts, thus affecting its normal work, serious can make the pressure gauge failure, scrap.
3, the pressure on the installation of pressure gauge, according to the regulations of JJG52-1999, its verification period is generally not more than half a year.
4 and pressure medium to large fluctuations, used frequently, the accuracy of the demand is higher, and the more strict security factors, according to the specific circumstances will verification cycle shorten appropriately.
Eight, parameter table:
Accuracy grades | 2.5 on the Richter scale | |
Using the environment conditions | Serve to connect YEJ - 101 | - 20 ~ 60 ℃ |
Serve to connect YEJ - 121 | 0 ~ 50 ℃ | |
Relative humidity | No greater than 85% | |
Electrical indicators | Serve to connect YEJ - 121 | |
Set the error | Less than 2.5% of full scale | |
The output contacts capacity | 3 a 220 v ac non-inductive load | |
Working power supply | AC 220V | |
Power consumption | Less than 5 w | |
Pressure interface | Φ 8 (with inner Φ 6 hose) | |
Nine, measuring range:
Positive pressure (Pa) | Negative pressure (Pa) | The positive and negative pressure (Pa) |
0 ~ 160 | - 160 ~ 0 | - 80 ~ + 80 |
0 ~ 250 | - 250 ~ 0 | - 120 ~ + 120 |
0 ~ 400 | - 400 ~ 0 | - 200 ~ + 200 |
0 ~ 600 | - 600 ~ 0 | - 300 ~ + 300 |
0 ~ 1000 | - 1000 ~ 0 | - 500 ~ + 500 |
0 ~ 1600 | - 1600 ~ 0 | - 800 ~ + 800 |
0 ~ 2500 | - 2500 ~ 0 | - 1200 ~ + 1200 |
0 ~ 4000 | - 4000 ~ 0 | - 2000 ~ + 2000 |
0 ~ 6000 | - 6000 ~ 0 | - 3000 ~ + 3000 |
0 ~ 10000 | - 10000 ~ 0 | - 5000 ~ + 5000 |
0 ~ 16000 | - 16000 ~ 0 | - 8000 ~ + 8000 |
0 ~ 25000 | - 25000 ~ 0 | - 12000 ~ + 12000 |
0 ~ 40000 | - 40000 ~ 0 | - 20000 ~ + 20000 |
Ten, appearance size: 
Eleven, terminal diagram: 
Twelve, design selection and ordering information:
When ordering, please specify the name of the measured medium, working pressure, medium temperature and medium density, measuring range, installation method, etc.If you have any questions, please call the sales manager of the company or technical contact.
Eight, after-sales service commitment:
1, our company sold by pressure gauge series product appeared quality problem within 12 months, responsible for free maintenance.
2, the warranty period, any quality problems such as the products of our company, my company is responsible for free repair or replacement.
3, the warranty period, such as user improper use, damaged products, my company is responsible for the maintenance, charge damage parts cost.
4, after the warranty period appear quality problem, my company is responsible for the maintenance, charge damage parts cost.
5, such as user need to my company site services, to users in the province I company service personnel to reach the site within 12 hours, fujian association of foreign languages and user reach the site within 48 hours.
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