⎝⎛星力捕鱼⎞⎠

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Address: Xiongyi, Jinhe Road, Jinhu County, Jiangsu Province
Lunan
Phone: 0517-86900901
0517-86900921
0517-86900920
Fax: 0517-86900902
Postcode: 211600
http://zzyfwh.com
Email: chinadongxiang@163.com
Industry Information
Shockproof electrical contact pressure gauge is suitable for measuring non-corrosive pressure on copper and copper alloys
2012-4-14 9:33:23

具有抗介质脉动和冲击载荷,耐环境振动等优异特性,耐震电接点压力适用测量对铜和铜合金无腐蚀性的气体,液体或蒸汽等压力。 Shockproof electrical contact pressure gauges have excellent characteristics such as resistance to medium pulsations and shock loads, and resistance to environmental vibrations. Shockproof electrical contact pressures are suitable for measuring pressures of gases, liquids, or steam that are not corrosive to copper and copper alloys. The shock-proof electric contact pressure gauge is provided with upper and lower limit two-position switch-type contact devices. When the pressure reaches the set value, it sends a signal or on-off control circuit for the automatic control or signaling of the operating system. The anti-vibration structure of the shock-resistant electric contact pressure gauge can effectively suppress the shaking and impact of the pointer, protect the contact, make the indicator clear, the electric signal switching is reliable, and the work is stable. Shockproof electrical contact pressure gauges are widely used in industrial production processes such as machinery, chemical industry, petroleum, metallurgy, and power.


的使用注意事项:1、工作压力使用全量程的1/3~2/3为宜,使用范围最高不得超过满刻度的3/4。 Notes on the use of shock-resistant electrical contact pressure gauges : 1. It is advisable to use 1/3 to 2/3 of the full scale for the working pressure, and the range of use must not exceed 3/4 of the full scale. 2. The verification cycle generally does not exceed half a year. If the pressure measurement site has large fluctuations, frequent use, high accuracy requirements, and strict requirements on safety factors, the verification cycle can be appropriately shortened according to specific conditions. 3. The working environment should be free of corrosive gases. A hydropower station in Yunnan ordered twenty YXCN-100 pressure-resistant electric contact pressure gauges (0 ~ 4MPa, 380V AC, upper and lower limits) from our company. Among them, several meters were used for about one or two days, and some meters were used for several hours. The on-off signal output by the contact lost its reliability and could not realize the automatic control function of the system. The power station immediately deactivated the batch of meters. After the company inquired about the operating conditions and electrical parameters of the meter in detail by phone, it immediately reissued six of them. After practical use, the same problem was still found. That is, the on-off signal can be reliably output in the initial stage of installation. After a short period of operation, the on-off signal cannot be guaranteed to be output as required. For this reason, the power station believes that our company's shock-resistant electrical contact meter is a "fake and inferior product" and its service life is not as good as the ordinary electrical contact pressure gauge (about one or two months) provided by a Jiangsu and Zhejiang manufacturer. Send someone to the scene to resolve quality issues. The company's technical staff and the area after-sales service staff went to the power station to understand the actual use of the instrument and the failure phenomenon in detail. The instrument's workplace vibration and medium pressure pulsation are small, which will not cause the instrument contact mechanism to fail. However, after the site inspection and inquiries with the controller manufacturer, it was confirmed that the actual input voltage of the instrument was 24V DC. The AC type electric contact pressure gauge uses a mechanical magnetically assisted electric contact mechanism, which is not suitable for working under 24V DC voltage. The reason is that the arcing phenomenon occurs when the contacts are turned on and off, which causes the contacts to be ablated and fail. Its life is much shorter than that for AC voltage. This is the original use of non-oil-filled electrical contact meters in the power station. The main reason for two months. The shock-resistant instrument provided by our company is filled with silicone oil. The carbon in the silicone oil is precipitated under the action of DC arc, and the carbon deposits are attached to the contacts, which results in the instrument's conductivity due to the contact after a short period of use. Fall and fail.

具有抗介质脉动和冲击载荷,耐环境振动等优异特性,适用测量对铜和铜合金无腐蚀性的气体,液体或蒸气等压力。 Shockproof electrical contact pressure gauges have excellent characteristics such as resistance to medium pulsations and shock loads, and resistance to environmental vibrations. They are suitable for measuring pressures of gases, liquids or vapors that are not corrosive to copper and copper alloys. The instrument is equipped with upper and lower limit two-position switch-type contact device. When the pressure reaches the set value, it will send a signal or open and close the control circuit for the automatic control or signaling of the operating system. Shockproof electrical contact pressure gauges have excellent characteristics such as resistance to medium pulsations and shock loads, and resistance to environmental vibrations. The instrument is equipped with a two-position switch-type contact device, which sends out a signal or opens and closes the control circuit when the pressure reaches a set value for automatic control or signaling by the operating system. Widely used in machinery, chemical industry, petroleum, metallurgy, electric power and other industrial production processes. The user lacked understanding of the input voltage in the actual use of the meter. When ordering, we asked our company to use the "380V AC, 220VDC, 1A" marked on the ordinary (non-oil-filled) electrical contact meter mechanism produced by a factory in Jiangsu and Zhejiang. 30VA "electrical parameters, providing shock-resistant oil-filled meters. After the first batch of problems, when our company re-implemented the electrical parameters to them by telephone, the parameters provided by the power station were still 380V AC. Therefore, the company believes that the reason for the failure of the meter contact device is the user selection error. The company then provided the user with a batch of new products suitable for the case of 24V DC-reed-type shock-resistant electrical contact pressure gauges. The contact mechanism used by this instrument has no mechanical contacts, does not pull arcs at low DC voltage, and has no carbon deposits. The number of contact openings and closings can reach more than 1 million times, which is well reflected by users.