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nfmin8459

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[求助] 求翻译

Variable area flowmeters shall be as follows:
1)
Variable area flowmeters shall be the metal tube type except that glass tube enclosed type may be used if the fluid is air, inert gas or water at operating pressures below 50 psig.
2)
When flow rates are lower than can be metered with the metal tube, glass tube enclosed in a heavy duty gage glass (flat glass type) shall be used.
3)
Where space or layout considerations do not allow the use of such gage glass enclosures, proposals to use the glass tube type with other types of shielding for personnel protection shall be submitted to Purchaser for approval.
4)
End connections smaller than NPS 1/2 shall be internal taper thread connections.
5)
Manufacturer’s standard tube and float shall be used where possible with normal flow rates between 60 % and 80 % capacity.
6)
Meter factor shall be included on the nameplate.
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fjtony163

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【答案】应助回帖

nfmin8459(金币+50, 翻译EPI+1): 2011-11-12 16:54:09
变截面流量计性质应该如下:
1. 变截面流量计应该是金属管材质,除非该流体为空气,惰性气体或者操作气压在50psig以下,就可能使用封闭式玻璃材质。
2. 当流量小于金属管的可测量值时,应该使用在重型负载玻璃(平板玻璃)包裹下的玻璃管。
3. 当空间或空隙不利于使用这种负载型玻璃封装时,就应向购买者征求同意去购买其他可进行仪器包裹保护的玻璃管。
4. 小于NPS1/2的连接处末端应使用内部胶线连接。
5. 厂商标准管和浮力球(?)应在普通流量的60%至80%之间使用。
6. 铭牌中应包含仪表矫正因素。

打了问号的地方不明确,专业术语。
2楼2011-11-12 16:05:22
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