Rectangular bellows electric contact pressure gauge

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Rectangular bellows electric contact pressure gauge is suitable for boiler ventilation equipment cor…

Serve to connect YEJ - 121 seriesRectangular bellows electric contact pressure gaugeIs suitable for boiler ventilation equipment corrode the copper alloy and neutral, no explosion danger of the micro pressure and negative pressure of the gas measurement with double two adjustment (double), in order to realize a type adjustment or transfinite alarm function.

Second, the working principle:
Serve to connect YEJ - 121 seriesRectangular bellows electric contact pressure gaugeBy measuring system (including joint, spring pipe, gear transmission mechanism), indicating some (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 - 121 seriesRectangular bellows electric contact pressure gaugeWidely used in petroleum, chemical industry, metallurgy, power stations and other industrial department or mechanical and electrical equipment of form a complete set of measuring no explosion hazard of all kinds of liquid medium pressure.

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)

Six, 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.

Seven,Use notice:

1, when using the environment temperature for - 40 ~ 70 ℃, relative humidity is not more than 80%, such as deviation from normal use temperature 20 ℃, the temperature must be included in the additional error.
2, must be installed vertically, and strive to maintain the same level with measuring points, such as the difference between high included in the additional error caused by the liquid column, but don't have to consider when measuring gas.When installation will watch case vent at the back of the jam, lest affect explosion-proof performance.
3, when using normal use of the measuring range: no more than 3/4 of the measurement limit under static pressure, under the volatility should not be more than two-thirds of the measurement limit.In the above two kinds of low pressure situation under large pressure gauge measuring zui should not less than a third of the lower limit, vacuum parts all use measurement of a vacuum.
4, such as when using vacuum gauge pressure failure or internal parts loose, should not work properly when fault repairs, maintenance or production manufacturer.

Eight, parameter table:

Nine, measuring range:

Ten, appearance size: 

Eleven, terminal diagram: 

Twelve,Design and 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. 
After-sales service commitment:
1, sold by my companyPressure gauge seriesProduct 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.