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©Novinium, Inc. 2016, all rights reserved. 

 

NRI 603 – Small Diameter Cables  – SPR 

Revised: February 19, 2016 

 

Page 

6

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11

 

 

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. 

Summary of Contents for NRI 603

Page 1: ...esidential distribution URD sized cables Setting up injection equipment Reading the liquid flow meter Calculating fluid amounts Knowing when to pin the cable to finish the injection Trademarks http ww...

Page 2: ...on 5 1 Flow check 5 2 Flush water and other fluids 5 3 Read the liquid flow meter 6 Estimating Fluids 7 1 Estimate the current supplied fluid 7 2 Estimate time for fluid arrival 8 Fluid Arrival 8 1 Fl...

Page 3: ...cure the liquid flow meter to the tank that is being used Figure 2 Liquid flow meter Figure 3 Flow meter secured on tank Connect the tank s injection port colored red to the inlet of the flow meter Co...

Page 4: ...elps reduce the effects of any leaks that would have been found if attended Read the pressure on both the inline gauge and tank gauge The two readings should be close to each other Check the tank for...

Page 5: ...re Injection Check 1 Check for leaks Before sending fluid straight to the cable make sure each part of the injection assembly is leak free If any leaks are found in the following process close all val...

Page 6: ...f the BBs are dropping rapidly there is a restriction in the cable Verify flow through the cable by checking the tubing on the receiver end of the cable Build up pressure in the line or submerge it in...

Page 7: ...ust 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...

Page 8: ...tes Estimating Fluids 1 Estimate the current supplied fluid Note the current fluid level in millimeters mm Subtract the current level from the starting level Figure 12 Find the starting and current fl...

Page 9: ...sh any contaminants out of the cable Continue to flush until at least 25cc of clear clean fluid comes out of the cable Figure 14 Flush the cable 2 Reduce pressure to the tailored injection pressure TI...

Page 10: ...igher voltage level follow the pressurization procedure as stated in NRI 613 Large Diameter Cables Feeder SPR Figure 15 Thin insulation compared to the conductor 1 Flow rate signals the end of injecti...

Page 11: ...even if the supplied fluid is lower than the floor The limited space in these cables might not allow enough fluid to reach the floor Pin the cable Figure 16 Liquid flow meter BBs are at 1cc min 2 Pin...

Page 12: ...essure from the tanks if they will be moved or stored for the night Open the valve on the feed tank s injection port to vent pressure and fluid from the liquid flow meter back into the feed tank 3 Att...

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