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9

PENBERTHY

 SERIES LC FLAT GLASS GAGES

INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS

9 DISPOSAL AT END OF USEFUL LIFE

Penberthy gages are used in a variety of fluid 
applications. By following the appropriate 
federal and industry regulations, the user 
must determine the extent of preparation 
and treatment the gage must incur before its 
disposal. A Material Safety Data Sheet (MSDS) 
may be required before disposal services 
accept certain components.
Metal, glass and polymers should be recycled 
whenever possible. Refer to order and 
applicable technical data sheets for materials 
of construction.

10 TELEPHONE ASSISTANCE

If you are having difficulty with your liquid level 
gage, contact your local Penberthy distributor. 
You may also contact the factory direct at 
(956) 430-2500 and ask for an applications 
engineer. So that we may assist you more 
effectively, please have as much of the 
following information available as possible 
when you call:
∙ Model #
∙ Name of the company from whom you 

purchased your liquid level gage

∙ Invoice # and date
∙ Process conditions (pressure, flow rates, 

tank shape, etc)

∙ A brief description of the problem
∙ Trouble shooting procedures that failed

If attempts to solve your problem fail, you 
may request to return your liquid level gage 
to the factory for intensive testing. You must 
obtain a Return Authorization (R.A.) number 
from Emerson before returning anything. 
Failure to do so will result in the unit being 
returned to you without being tested, freight 
collect. To obtain an R.A. number, the following 
information (in addition to that above) is 
needed:
∙ Reason for return
∙ Person to contact at your company
∙ 'Ship-to' address

There is a minimum charge for evaluation 
of non-warranty units. You will be contacted 
before any repairs are initiated should the cost 
exceed the minimum charge. If you return a 
unit under warranty, but it is not defective, the 
minimum charge will apply.

6.  Install shields, if used, and gasket on glass 

being careful to keep components centered.

7.  For transparent style gages, align studs 

to accept liquid chamber and slide liquid 
chamber into place being careful to keep 
components centered.

8.  For reflex style gages, install covers in place 

while making sure alignment of components 
is maintained with vision slot. Install 
nameplate, washer and all nuts finger tight.

9.  For reflex belleville style gages: install 

nameplate and seven belleville washers 
under each nut with pointed end toward the 
nut (see Figure 2). Finger tighten nuts.

10. Using a torque wrench, tighten nuts in 5 ft·lb 

(7 Nm) increments, following the sequence 
in Figure 1 until the torque values shown in 
Table 3 are reached.

 Note: 

depending on gage size there may be 

less bolting than shown in Figure 1. Start at 
the center and follow 'Z' pattern outward to 
the limit of bolting on a specific gage.

11.  For transparent style gages, install 

gaskets and shields, if used, centered 
on vision slots.

12.  Install rubber band around each piece 

of glass and cushion, then place glass 
centered on gasket or shields, if used.

13.  Install covers in place being careful to 

maintain components alignment inside.

14.  Install nameplate, washer and nuts to 

studs. Finger tighten nuts.

14A. For transparent belleville style gages: 

install nameplate and four belleville 
washers under each nut with pointed 
end toward the nut (see Figure 2). Finger 
tighten nuts.

 

Note: 

the following procedure is to be 

done on only one side of the gage.

15.  Using a torque wrench, tighten nuts in 

5 ft·lb (7 Nm) increments, following the 
sequence in Figure 1 until the torque 
values shown in Table 3 are reached.

Refer to Section 5 for installation and Section 6 
for operation of liquid level gage when 
returning to service.

Summary of Contents for PENBERTHY LC Series

Page 1: ...E INSTRUCTIONS TABLE OF CONTENTS Product warranty 1 1 About the manual 2 2 Introduction 2 2 1 System description 2 3 Available models 3 3 1 Design ratings at maximum and minimum operating temperatures 3 4 Inspection 4 4 1 Glass inspection 4 4 2 User rating inspection 4 5 Installation 4 5 5 1 Piping strain 4 5 2 Differential thermal expansion 4 5 3 Mirror viewing 4 5 4 Nut retorquing 5 5 5 Bellevil...

Page 2: ...tc Visual indication can be enhanced by using reflex glass or illuminators accessory 2 1 System description Penberthy Series LC gages comprise six basic components Each component may vary slightly depending on the desired physical and mechanical properties for the gage Use the exploded parts views in Section 11 as additional reference material Chamber provides a pressure retaining metallic channel...

Page 3: ...00 F 38 C 180 psig 1240 kPa at 400 F 204 C Note lower temperatures are possible with metallic material variation e g 316 stainless construction Grafoil gaskets cushions useable to 325 F 198 C The pressure and temperature ratings may deviate from the previous tables if the gasketing materials of construction and or bolting are other than those specified Higher and or lower temperature ratings are a...

Page 4: ...to dust grit tools and any other objects which may scratch chip or break the glass WARNING DO NOT use glass that is chipped or even slightly scratched Glass surface defects weaken the glass which may result in glass breakage and fluid loss under pressure resulting in serious personal injury or property damage 4 2 User rating inspection The user should confirm that 1 The Series LC liquid level gage...

Page 5: ...limit of bolting on a specific gage TABLE 3 BOLT TORQUE VALUES Gasket material ft lb Nm RLC and TLC w Grafoil standard 20 to 25 27 to 34 RLC and TLC w non asbestos optional 35 to 40 48 to 54 Top chem 2000 20 to 25 27 to 34 PTFE and PCTFE Kel F 20 to 25 27 to 34 25 glass filled PTFE 19 to 22 26 to 30 All models with FKM Viton or elastomeric optional 10 to 15 14 to 20 TLC with PCTFE Kel F shields op...

Page 6: ...age during the test Hydrostatically pressure test all installations to at least 100 psig 690 kPa but less than the design pressure and correct any leakage before proceeding Realistic maintenance schedules can only be determined with full knowledge of the services and application situations involved These will be based upon the user s own operating experience with their specific application If bolt...

Page 7: ...th ends of each section and then proceeding from both ends to the center of each section as shown in Figure 4 3 Nut loosening sequence Remove nuts washer belleville washers if any and nameplate Tap covers with rubber hammer as needed to loosen and remove For belleville washer assemblies to remove covers studs may need to be removed by laying the assembly on its side and knocking the stud U bolts t...

Page 8: ...h 0 05 mm tolerance described in the previous section proceed to obtain new glass gaskets cushions and shields if used and proceed to reassemble as follows refer to exploded parts views in Section 11 if needed 1 Clean threads on bolts and nuts to remove all paint rust and scale Apply a light coat of oil to the threads 2 For transparent gages measure distance between bolt heads of each section and ...

Page 9: ...fore any repairs are initiated should the cost exceed the minimum charge If you return a unit under warranty but it is not defective the minimum charge will apply 6 Install shields if used and gasket on glass being careful to keep components centered 7 For transparent style gages align studs to accept liquid chamber and slide liquid chamber into place being careful to keep components centered 8 Fo...

Page 10: ...shion 9 Shield 100 Screw 125 Washer 163 Nameplate 331 Band RECOMMENDED SPARE PARTS Item Description Min qty 100 Screw 2 per sect 4 Nut 2 per sect 48 Glass 1 7 Gasket 2 8 Cushion 2 9 Shield 2 FIGURE 6 RLC reflex FIGURE 7 TLC transparent 11 EXPLODED PARTS DIAGRAMS NOTE Size 9 shown actual gage may be shorter and require fewer bolting requirements Shields are optional ...

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