SECTION III – INSPECTION 1. Standard Inspection Practices -L.压降检查：清洁的金属滤芯

L.Pressure Drop Check: Cleaned Metallic Filter Elements

压降检查：清洁的金属滤芯

Check pressure drop of cleaned filter element as follows:

检查清洁后的滤芯压降，方法如下：

• NOTE: Check pressure drop of a new filter element to establish baseline data for use during checking of cleaned filter elements.
• 注：检查新滤芯的压降，以建立检查清洁后的滤芯时使用的基准数据。

(1) Install filter element in test setup similar to that shown in Figure 327.

将滤芯安装在测试装置中，装置与图327所示类似。

(2) Adjust regulator (1) to apply an inlet air pressure of 20 psig (137.89 kPa) as indicated on inlet pressure gage (2).

调节调节器(1)，使进气压力达到20 psig (137.89 kPa)，如进气压力表(2)所示。

(3) Pressure indicated on downstream pressure gage (4) should not exceed pressure measured for a new filter element.

下游压力表 (4) 指示的压力不应超过新滤芯测得的压力。

(4) Replace filter element if pressure is excessive.

如果压力过高，请更换滤芯。