©Novinium, Inc. 2016, all rights reserved.
NRI 603 – Small Diameter Cables – SPR
Revised: February 19, 2016
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Record all fluid and water flush and enter
the total volume into Knomentous.
3.
Read the liquid flow meter.
The liquid flow meter shows the volume of fluid flowing through the glass tube every minute. It does
this by moving the two small BBs (one black, one silver) in the liquid flow meter’s glass tube.
The black BB is tinted black glass, while the silver BB is stainless steel. The black BB is more sensitive to
flow than the silver ball and must be located above the silver BB.
If the BBs are reversed, clearly label and contact supply chain to exchange for a new liquid flow meter.
The backing behind the glass tube has two scales printed on it. The left side, marked with “Silver ball”,
is the scale to read the silver BB’s position. The right side, marked with “Black ball”, is the scale to read
the black BB’s position. The unit of measurement of both scales is in mL/min, which is the same as
cc/min.
Figure 9:
Black and silver ball scales.
Figure 10:
Units of both scales.
When the black BB is above 11 cc/min on its scale, begin using the silver BB and its scale for readings
until the black BB drops back below 11 cc/min.
Monitoring the flow through the liquid flow meter can reveal much about the cable.