Vacuum pressure gauge

YZ - 100 seriesVacuum pressure gaugeBased on the atmospheric pressure as the benchmark, instrument used for measuring less than atmospheric pressure.Pressure vacuum gauge: based on the atmospheric pressure, the instrument used to measure and shorter than the atmospheric pressure.
Pressure said there are two kinds of methods: one is absolute vacuum expression of pressure as the benchmark, known as the absolute pressure;Another pressure is indicated by the atmospheric pressure as the benchmark, known as the relative pressure.Since most pressure meter pressure is measured by the relative pressure, so the relative pressure is also called the table.When absolute pressure less than atmospheric pressure, available the absolute pressure inside the container less than a numerical value to represent the atmosphere.Known as the "vacuum".
Their relationship is as follows: absolute pressure = atmospheric pressure + relative pressure;Vacuum = the atmospheric pressure, absolute pressure;Our country legal pressure units for the Pa (N / ㎡), known as PASCAL, referred to as "Mr.Because the unit is too small, so it is often used to 10 ^ 6 times unit MPa (MPa).

Second, the working principle:
YZ - 100 seriesVacuum 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:
YZ - 100 seriesVacuum pressure gaugeRefers to elastic element as the sensitive element, measure and instructions above environment pressure meter, the widespread application, it almost throughout all of the industrial process and research fields.In the heat pipe network, oil and gas transmission, water supply, gas supply system, vehicle maintenance shop, etc can be seen everywhere.Especially in the process of industrial process control and technology measure, due to the flexibility of mechanical pressure gauge sensor has high mechanical strength and production is convenient wait for a characteristic, make the mechanical pressure gauge is widely used.

Four, the main features:
1, stable performance, high measurement precision, response speed faster.
2, absolutely, the accuracy of 0.5 magnitude can be used as the standard.
3, measurement is the total pressure, including gas and steam pressure.
4, the results of the measurement has nothing to do with the gas species, composition and properties.
5, in the process of the pressure, breathe in itself and deflated is small, will not affect the measured pressure.
6, no high temperature parts, won't make the oil vapor.
7, if choose corrosion resistant materials, can measure the corrosive gas pressure.
8, firm structure, and sealing and makes the pipes easier to install.
9, easy operation, do not need to adjust, but need to check on a regular basis.

Five, the use matters needing attention:
Is a kind of common measuring gauges, in many areas has a certain application.Use considerations such as measuring range, temperature and other problems.
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, when the pointer when using internal parts failure or loose and not work when a failure should be repair, or maintenance.
5, when using, should avoid vibration and impact, so as to avoid damage.

Six, the technical parameters:

Seven, selection of code:

Eight, design 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.
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.