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Company Name: Changshu Herun Import & Export Co.,Ltd

Business Type: Manufacturer

Main Products: Nitrogen Generator , Pressure Gauge Movement , Pressure Gauge , Thermomanometer Movement , Special Gas Regulator , Cable Accessories

Export Percentage: 41% - 50%

Year Established: 2009

NEWS
Precision digital manometer is the crystallization of many years' research and manufacture of intelligent digital manometer.The instrument fully adopts the customer's advice accumulated in the actual operation process, and reasonable and flexible use of microcomputer, integration, laser technology, to ensure the accuracy and long-term stability of the instrument.It can be used for on-line testing and verification of pressure transmitters, ordinary (precision) pressure gauges, pressure controllers, etc., which is the best choice for customers' ideal pressure standard equipment.

2021-04-07

Bourdon tube pressure gauges are the most commonly used mechanical pressure gauges.The pressure element is often referred to as a Bourdon tube: the French engineer Eugene Bourdon first used the principle of a pressure gauge in the mid-19th century.The Bourdon tube consists of a flexible spring and a C-shaped bend with an oval cross section When pressure is applied to the interior space of the Bourdon tube, the cross section becomes circular.In this process, a circumferential stress is created, increasing the radius of the C-tube.Eventually, one end of the tube moves about two or three millimeters.This deflection is a measure of pressure.This is transferred to the movement, which then converts the linear displacement to rotational motion, which is displayed on the scale by the pointer

2021-04-06

1. Introduction of refrigerant pressure gauge: The refrigerant pressure gauge is also called a refrigerant gauge or a fluorine gauge. It is used to measure the current pressure of the refrigeration system. It is mainly used to detect the pressure value of the refrigerant at different stages of the system, and the operating conditions of the user holding the equipment. At present, the accuracy requirement of the refrigerant pressure gauge in our country is 2.5. Refrigeration pressure gauges are generally divided into "high pressure gauges" and "low pressure gauges", that is, the maximum reading value of the general "low pressure gauge" is 1.8MPa or 18bar (Figure 1), and the maximum reading value of the "high pressure gauge" is 3.8MPa or 38bar (Figure 1). 2) Low pressure meter (Figure 1) Second, read the pressure value 1. The value of the outermost circle of the low pressure gauge is the value of MPa. If the pointer points to "3", the current pressure is 0.3MPa, and the value of the second circle of the low pressure gauge from the outside to the inside is 1kg/cm2 2, the value of the red letter in the innermost circle of the high pressure meter is the value of bar, if the pointer points to "20", that is, the current pressure is 20bar 3, the conversion of different pressure units 1MPa≈101kg/cm2≈10bar≈145Psi Three, read the temperature value 1. Low pressure meter, counting from outside to inside, the second circle blue R407c temperature value, unit ℃ Celsius The 4th circle black R22 temperature value, unit ℃ (Celsius) If a chiller uses R22 as the refrigerant, the condensation temperature corresponding to the low pressure of 0.5MPa during operation is about 6 degrees If a chiller uses R134a as the refrigerant, the condensation temperature corresponding to the low pressure of 0.3MPa during operation is about 9 degrees 2, high pressure meter, counting from the inside to the outside the first circle, black, pressure value, unit MPa (megapa) or bar 2nd circle black, R404A temperature value, unit ℃ (Celsius) the 3rd circle, blue, R134a temperature value, unit ℃ (Celsius) the 4th circle, green, R22 temperature value, unit ℃ (Celsius) Like a chiller using R22 as the refrigerant, the high pressure 1.8MPa corresponds to a condensation temperature of about 50 degrees during operation Like a chiller using R134a as the refrigerant, the condensation temperature corresponding to the high pressure 1.4MPa during operation is about 55 degrees Supplementary explanation: 1, MPa MPa, 1kg/cm2 kilogram force/square centimeter 2. Different pressure gauges may have different pressure units. Before reading the pressure, look at the logo on the front dial. 3. Chillers and air conditioners are generally used: R22, R407C, R134a; Low temperature unit R22, R404A; Household air conditioner R22 or R410a; Automotive air conditioner: R134, R12. 4. When the compressor is not running, the pressure is the equilibrium pressure, that is, the high and low pressures are the same, and the pressure value corresponds to the ambient temperature or the water tank temperature. Such as: R22 when the ambient temperature is 30 degrees, the balance pressure of the pressure gauge is about 1.1 MPa Such as: R22 when the ambient temperature is 10 degrees, the balance pressure of the pressure gauge is about 0.6MPa

2021-03-09

csherun@ herun has unique competitive advantages in the range of pressure gauges. After years of exploration, the company's pressure gauge products have exceeded the EU standards in terms of performance and fatigue resistance, and can maintain more than 2 times the pressure cycles of EU standards in accuracy measurement. The company's existing service customers, copper alloypressure gauge from medical equipment enterprises, petrochemical enterprises, plastic machinery, food industry, shipping, construction machinery and other hundred of domestic & foreign enterprises. With the development of the company and further R&D, the company is confident to provide customers with higher quality pressuregauge, wider range of products and more perfect service.

2020-08-06

Sincerely invite you to visit our booth H11, F58-2

2018-04-08

2017 CHINA MACHINERY FAIR MOSCOW The company has unique competitive advantages in the range of pressure gauges. After years of exploration, the company's pressure gauge products have exceeded the EU standards in terms of performance and fatigue resistance, and can maintain more than 2 times the pressure cycles of EU standards in accuracy measurement.

2017-10-24

Hannover Messe 2016 csherun@ herun instrument is a integrated high-tech enterprise which includes the reseach and development,prodaoction ,sales and trade. Now it has Kunshan Herun Instrument Co., Ltd., Wuxi xinherun Instrument Co., Ltd., Changshu herun import and Export Co., Ltd. and other enterprises. It has been established since 2009, after more than 10 years of development, it has formed a diversified product distribution. The company provides customers with high performance and high quality products.

2016-03-10

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Mr. Jackie Zhang

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