Summary of Contents for Varec 6700
- Page 1 IOM002GVAE1818 6700 Liquid Level Indicator Accurate gaugeboard indicator for level measurement Automation Solutions for oil & gas, defense and aviation applications...
- Page 3 Phone: (770) 447-9202 Fax: (770) 662-8939 Trademarks Acknowledged Varec, Inc. recognizes all other trademarks. Trademarks of other products mentioned in this manual are held by the companies producing them. FuelsManager®, TankView®, TacFuels®, Varec®, 8130 RTU8130®, and FuelsManager IntoPlane® are registered trademarks of Varec, Inc.
- Page 4 Seller and Buyer. The 6700 Liquid Level Indicator (LLI) has not been tested by Varec under all possible operational conditions, and Varec may not have all the data relative to your application. The information in this instruction manual is not all inclusive and does not and cannot take into account all unique situations.
- Page 5 Read this manual carefully and make sure you understand its contents before using this product. Follow all instructions and safety guidelines presented in this manual when using this product. If the user does not follow these instructions properly, Varec cannot guarantee the safety of the system.
- Page 6 ATEX Exemption The 6700 Liquid Level Indicator (LLI) is considered a simple apparatus. It moves very slowly, and has a low capacity to store energy. It is incapable of forming hot surfaces or other ignition sources, even in cases of rare malfunction. Simple apparatus are not to be classified as ATEX equipment or to be marked according to ATEX Directive 2014/34/EU.
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Page 7: Table Of Contents
Lubrication ............. . . 51 Oil Recommendations for Oil Seal Accessory Units ......52 Varec, Inc. - Page 8 Inspection ..............52 Troubleshooting Common Problems .
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Page 9: Introduction
The liquid level in feet and inches, or meters, decimeters, and two-centimeter increments is indicated by the indicator position on the gaugeboard. The user may then convert the liquid level to units of volume. This may be accomplished manually, or Varec's computer aided data acquisition system may perform the task. -
Page 10: Accessories
Liquid Level Indicator Accessories Varec manufactures accessories for transmitting and telemetering the information to a Varec Data Acquisition System. Limit switches may be attached to the Liquid Level Indicator system to provide signaling functions. Figure 1 through Figure 6 illustrate some of the accessories available. - Page 11 CAP GASKET HEX HEAD CAP SCREW WASHER HEX NUT 1-1/2 Inch NPT (Typical) Section: A - A 6.12 [155] 6.12 [155] Figure 1: 6700 LLI Accessory Drive Elbow Table 1: Part Numbers Type Part Number English BM4129 Metric BM8564 Varec, Inc.
- Page 12 Liquid Level Indicator 19.69 [500] 90° ELBOW FURNISHED WITH LEVEL INDICATOR KIT 7.70 [196] 1-1/2 NPT PIPE (BY CUSTOMER) 1-1/2 NPT PIPE (BY CUSTOMER) 13.69 [346] 20.56 4.50 [522] [114] TO GAUGEBOARD OR GAUGEHEAD 4.06 [103] 1/2 NPT DRAIN PLUG 1-1/2 PIPE NPT BOTH ENDS (BY CUSTOMER) 1-1/2 NPT COUPLING...
- Page 13 Table 3: Parts for Oil Seal, Severe Service, 8.5-inch Water Column Item No. Description Pipe, 1-1/2" x 15.50 [394], Carbon steel, NPT ends (Long) Pipe, 1-1/2" x 7.25 [184], NPT Ends (Short) ° Aluminum Sheave Elbow ° Aluminum Sheave Elbow with Elbow Varec, Inc.
- Page 14 Liquid Level Indicator 10.52 [267] 1-1/2 NPT PIPE (BY CUSTOMER) 6.00 [152] 90° ELBOWS FURNISHED 1-1/2 NPT PIPE WITH LEVEL INDICATOR KIT (BY CUSTOMER) TO GAUGEBOARD OR GAUGEHEAD 53.00 [1346] 1-1/2 PIPE X 43 [1092] LONG NPT BOTH ENDS (BY CUSTOMER) 1/2 NPT DRAIN PLUG 4.00 [102]...
- Page 15 (B14177-003) furnished with gaugeboard (5.75) [146] CENTER GAUGEBOARD REINFORCING BRACKET (02-10721-003) 3.75 [95.2] Gaugeboard section Reinforcing bracket (02-10721-003) Figure 5: Options Table 5: Gaugeboard Extension Parts Item No. Description Extension Bracket Hex Nut Hex Head Cap Screw Flat Wsaher Varec, Inc.
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Page 16: Float Ground Kit
Liquid Level Indicator Float Ground Kit The Float Grounding Kit positively grounds the float to the tape or cable. Connect the grounding cable (A) to the tape clamp (point B) and float (point C) as shown below. Tape Grounding Clamp Tape Clamp screw 2 required... -
Page 17: Installation
Instruction Manual. These are typical installations. All situations may not be covered. Contact Varec if additional information is needed. It is paramount that the user monitor the quality of the installation to assure long term, accurate performance. If the quality is compromised, inferior operation may result. - Page 18 Locate the float at a position inside of the tank where agitation on it will be at a minimum. Install a deflector if the product stream is close to the float. Contact Varec if agitators will cause excess float disturbances. Vertical pipe runs must be plumbed and perpendicular to prevent the tape from binding inside the pipe.
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Page 19: Oil Seal Installations
(see Figure 2 on page 4 and Figure 4 on page 6). If these are to be installed, refer to these illustrations as appropriate and perform the following additional installation procedures. Note Varec recommends an oil seal if the process temperature exceeds 200° F (93° C). Varec, Inc. -
Page 20: Installation Of Oil Seal, 8.5-Inch Water Column Operating Pressure Model
Liquid Level Indicator Installation of Oil Seal, 8.5-Inch Water Column Operating Pres- sure Model Refer to Figure 2 on page 4. 1. Apply appropriate pipe thread compound and install long pipe (1) into 135-degree elbow with bottom drain (4). 2. Apply pipe thread compound and install short pipe (2) into 135-degree elbow with bottom drain (4). -
Page 21: Installation Of Oil Seal, 27-Inch Water Column Operating Pressure
Make sure that the interior of all pipes are clean and corrosion free. 5. After the coupling and pipe are checked to make certain that they are plumb, unscrew the pipe from the coupling. 6. Seal the threads with pipe thread compound and reconnect the pipe to the coupling. Varec, Inc. - Page 22 Liquid Level Indicator 7. Center the base of a top cable anchor in its hole. Hold it plumb while welding it to the roof. Do the same for the other top cable anchor. 8. Remove the housing nipple and cap from the top cable anchors and hang plumb lines from them at the center to mark the position where the bottom cable anchor will be welded.
- Page 23 (see Figure 7). Note To fit the gaugeboard to the tank, cut the highest-numbered gaugeboard section at the marker that is 4.50 inches greater than the tank height to adjust the fit to the total height to the tank. Varec, Inc.
- Page 24 Liquid Level Indicator Figure 7: Cone Roof Tank Installation Installation and Operations Manual...
- Page 25 Installation Figure 8: Half Travel Cone Roof Tank Installation Varec, Inc.
- Page 26 Liquid Level Indicator Tank Wall Chalk Lines Tank Wall Chalk Lines Full Travel Face of gaugeboard Half Travel Tank Wall Chalk Line Tank Wall Chalk Line Support Bracket Detail Face of gaugeboard Gaugeboard Splice at Support Bracket Figure 9: Gaugeboard Installation Installation and Operations Manual...
- Page 27 29. Temporarily attach the tape/cable to the float with the furnished fastener (see Figure 8 on page 17). Feed the other end of the indicator cable over the sheave in the elbow and make sure that it is seated on the pulley. Final attachment to be made at initial calibration. Varec, Inc.
- Page 28 The accessory drive elbow should not be used for half-travel level indication. The use of auxiliary units not manufactured or supplied by Varec will void any Varec warranty and will relieve Varec of any obligation to service the product under warranty.
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Page 29: Connecting The Tape To The Float
6. Connect the grounding cable (A) to the tape connector (point B). 7. Attach the tape connector to the float. 8. Connect the grounding cable (A) to the float (point C). Varec, Inc. -
Page 30: Initial Calibration
Liquid Level Indicator Initial Calibration These instructions apply to systems that use a hollow-shell, welded float that is 14.5 inches [368 mm] in diameter by 4.0 inches [102 mm] deep. Calibration is based upon the standard specific gravity of water (1.0). Note For products of other specific gravities to be gauged, adjust the indicator accord- ingly. -
Page 31: Initial Lubrication
Installation Initial Lubrication Apply a light oil to the elbow and indicator sheaves. Varec, Inc. -
Page 32: Reassembly
A hanging weight anchor may be ordered from Varec if it is not practical to bolt or weld the bottom guide cable anchor to the floor of the tank. For tanks that are in service, the hanging anchor must be used. - Page 33 Note Throughout these instructions the term “tape/cable” is used to designate either the indicator cable drive or the combination tape and cable drive that is used to also drive the accessory drive elbow. If the tape/cable combination is used, the cable end goes on the gaugeboard side. Varec, Inc.
- Page 34 Note If auxiliary equipment is to be installed, do it prior to crimping the cable connector. The use of auxiliary units not manufactured or supplied by Varec will void any Varec war- ranty and will relieve Varec of any obligation to service the product under warranty.
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Page 35: Connecting The Tape To The Float
6. Connect the grounding cable (A) to the tape connector (point B). 7. Attach the tape connector to the float. 8. Connect the grounding cable (A) to the float (point C). Varec, Inc. -
Page 36: Initial Calibration
Liquid Level Indicator Initial Calibration These instructions apply to systems that use a hollow-shell, welded float that is 14.5 inches [368 mm] in diameter by 4.0 inches [102 mm] deep. Calibration is based upon the standard specific gravity of water (1.0). Note For products of other specific gravities to be gauged, adjust the indicator accord- ingly. -
Page 37: Initial Lubrication
Installation Initial Lubrication Apply a light oil to the elbow and indicator sheaves. Varec, Inc. -
Page 38: Reassembly
Liquid Level Indicator Reassembly 1. Reinstall the covers, gaskets, and bolts on the elbows. 2. Close the tank manholes and inspection covers. Installation and Operations Manual... - Page 39 Installation Figure 15: Bolted Tank Installation Varec, Inc.
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Page 40: Cone Roof Tank Installation (Fiberglass Tank)
Liquid Level Indicator Cone Roof Tank Installation (Fiberglass Tank) Note Be sure to read General Preparation at the beginning of this section before pro- ceeding with this installation. Refer to Table 2 on page 4. See Figure 18 on page 38. 1. - Page 41 Note As the float is four inches [101.6 mm] high and its waterline is at its equator, it can- not register the last two inches [50.8 mm] plus any bottom anchor height of liquid in the tank. 18. Complete the installation by performing steps 34 - 36 under Cone Roof Tank Installation. Varec, Inc.
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Page 42: Connecting The Tape To The Float
Liquid Level Indicator Connecting the Tape to the Float Note Be sure to read this procedure before pro- ceeding with this installation. Ensure you have completed all previous steps from your installa- tion checklist before proceeding. 1. Using the box that the tape came in, pull the tape out like a measuring tape. -
Page 43: Initial Calibration
Use the float connecting clamps (see Figure 10 on page 19) to make the final adjustment, then trim excess tape or cable at the float end, leaving some additional tape or cable for future adjustment needs. Install the heat shrinkable seal cap over the cut end of the cable. Varec, Inc. -
Page 44: Initial Lubrication
Liquid Level Indicator Initial Lubrication Apply a light oil to the elbow and indicator sheaves. Installation and Operations Manual... -
Page 45: Reassembly
Installation Reassembly 1. Reinstall the covers, gaskets, and bolts on the elbows. 2. Close the tank manholes and inspection covers. Varec, Inc. - Page 46 Liquid Level Indicator Figure 18: Fiberglass Cone Roof Tank Installation Installation and Operations Manual...
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Page 47: In-Service Tank Installations
In-service Tank Installations This section covers the additional procedures that are required for making installations on tanks that are in service. Varec service contracts provide the user substantial savings for maintaining and refurbishing the systems. Contact Varec Product Marketing for further information. -
Page 48: General Preparation
Plan the pipe routing. Position the roof connection installation into the tank interior within arms reach of a manhole or an inspection hatch. Use these procedures to install a Varec manhole or inspection hatch, if there is none located within arms reach of the tape pipe location. -
Page 49: Installation Of Model 228 Inspection Hatch To Existing Manhole Cover
Anchor Bar Installation Varec supplies an anchor bar for in-service installations (Part Number BA4481) that must be ordered separately. It is for normal service only. The guide cables fasten to the anchor bar with cable clamps (see Figure 19 on page 42). For severe or extreme service installations, contact Varec. - Page 50 Liquid Level Indicator Figure 228 Inspection Cover (for existing 20 inch and Piping and fittings ITEM DESCRIPTION larger manhole covers) furnished by customer FRAME ASSEMBLY See Details B & C COVER GASKET HEX HEAD CAP SCREW HEX NUT Existing standard roof manhole with gasket and mounting hardware 36.00 [914] maximum 16.00 [406] minimum...
- Page 51 Installation Figure 20: Severe Service Cone Roof Tank Installation Varec, Inc.
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Page 52: Float Installation
Liquid Level Indicator Float Installation 1. Refer to appropriate tank configuration and install top anchors less long nipple and cap. 2. Thread the float guide cables into the tank through the top anchor fittings and pull the ends back through the inspection hatch. 3. - Page 53 Refer to the manual for the accessory unit, if installed, and check out the operation of the accessory as appropriate. Note The use of auxiliary units not manufactured or supplied by Varec will void any Varec warranty and will relieve Varec of any obligation to service the product under war- ranty.
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Page 54: Initial Lubrication
Liquid Level Indicator Initial Lubrication Apply a light oil to the elbow and indicator sheaves. Installation and Operations Manual... -
Page 55: Reassembly
Usually this is installed on the outboard connection pipe elbow. Note The use of auxiliary units not manufactured or supplied by Varec will void any Varec warranty and will relieve Varec of any obligation to service the product under war- ranty. - Page 56 9. Refer to the appropriate tank configuration to complete the installation. ITEM DESCRIPTION COVER PLATE ASSY. HEX NUT HEX BOLT Whesoe Varec Figure 226 Manhole Cover (Standard for 20 inch API-650. Other sizes available on special order.) Manhole cover gasket and mounting hardware furnished by customer.
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Page 57: Operation
It is the user's responsibility to appropriately consider these and other factors in his application. For example, oil tank capacity tables are calculated for product at 60° F. A higher temperature will cause the tank to expand and the actual volume will be greater than the volume at the standard temperature. Varec, Inc. - Page 58 Hydrocarbons in Stationary Tanks by Automatic Tank Gauging. Accuracy of hand gauging is extremely important, as it is used to set the Varec Liquid Level Indicator. Careful reference to the benchmark of the tank assures accuracy of the levels as they are read from the indicator during operation.
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Page 59: Maintenance
Maintenance Periodic Maintenance Varec Model 6700 Low Pressure Liquid Level Indicators are designed for long service life. Like any other measuring device, Liquid Level Indicators require regular, periodic service to maintain the original performance. Table 8 on page 52 provides some suggested periodic service. -
Page 60: Oil Recommendations For Oil Seal Accessory Units
Subsequent inspections should be made every 90 days (Table 8). The user may adjust the schedule for his own convenience and safety, depending upon the product. Varec maintenance service contracts are available for 90- day, 6-month, 1-year and 5-year periods at substantial savings. - Page 61 Indicator or Yes: gaugeboard slides • Clean with automotive type spray degreaser. Repair/ dirty or damaged? replace. • Go to 2. Tape/cable off Remove elbow covers. elbow pulley? Yes: • Reseat and lubricate pulley shafts. • Go to 3. Varec, Inc.
- Page 62 Liquid Level Indicator Table 11: Calibration Repeatibility Unstable Possible Cause Action Pulley shaft/ Yes: bushing worn/ • Repair or replace. corroded? • Go to 4. Cable pipe/ Yes: conduit dirty? • Remove and clean. • Go to 5. Guide cables Yes: loose, kinked or •...
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Page 63: Specifications
Guide Cable: 3/32" Diameter Type 316 Stainless Steel Standard Float Specifications Table 14: Standard Float Specifications Material: Type 316 S. S. Diameter: 14.5 inches (36.8 mm) Eyelet Centers: 17 inches (43.2 mm) Net Weight: 8.8 lbs. (3.99 kg) Varec, Inc. -
Page 64: Bottom Anchor Bar Weight
Liquid Level Indicator Bottom Anchor Bar Weight Table 15: Bottom Anchor Bar Weight Weight: 52 lbs. (22.2 kg) Material: Steel Also, available in 304SS and 316SS Other Specifications Table 16: Other Specifications Operating Range: Full Travel • 62 ft. [23 M] Maximum Half Travel •... -
Page 65: Indicator Part Numbers
Specifications Indicator Part Numbers Table 17: Indicator Part Numbers Part Number Type Service 06-09830 Full Travel 06-09831 Half Travel Varec, Inc. -
Page 66: Float Part Numbers
Liquid Level Indicator Float Part Numbers Table 18: Float Part Numbers Part Number Type Service BM9074-000 316 S.S. Normal/Severe BM12338-000 Monel Extreme BM12339-000 Carpenter 20 Extreme P29-43 Fiberglass Extreme Installation and Operations Manual... -
Page 67: Sheave Elbow Part Numbers
Table 19: Sheave Elbow Part Numbers Part Number Description Service 06-08564 Aluminum 90° Normal BM3480 Aluminum 135° Normal BM3481 Aluminum 180° Normal BM4675 Cast Iron 90° Severe/Extreme BM4129 Elbow Drive, Normal, English Aluminum BM8514 Elbow Drive, Normal, Metric Aluminum Varec, Inc. -
Page 68: Bottom Anchor Bar Weight Part Number
Liquid Level Indicator Bottom Anchor Bar Weight Part Number Table 20: Bottom Anchor Bar Weight Part Number Part Number Description Service BA4481 Carbon Steel Bottom Guide Wire Anchor Assembly (2 Wire) Normal BA4482-005 304SS Bottom Guide Wire Anchor Assembly BA4482-006 316SS Bottom Guide Wire Anchor Assembly Installation and Operations Manual... -
Page 69: Oil Seal Accessory Part Numbers
Table 21: Oil Seal Accessory Part Numbers Assembly Part Number Type Service 10-01994-AAA Aluminum, Working Pressure Normal 8.5 in. W.C. 10-01994-BAA Iron Working Pressure Severe 8.5 in. W.C. 10-02861-AAA Aluminum Working Pressure Normal 27 in. W.C. All pipes are steel. Varec, Inc. - Page 70 Liquid Level Indicator Installation and Operations Manual...
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Page 71: Order Codes
M04 Metric- Tank to 4 [3.890] m M06 Metric- Tank to 6 m M08 Metric- Tank to 8 m M10 Metric- Tank to 10 m M12 Metric- Tank to 12 m M14 Metric- Tank to 14 m M16 Metric- Tank to 16 m Varec, Inc. - Page 72 Liquid Level Indicator Board Type and Length M19 Metric- Tank to 19 m M21 Metric- Tank to 21 m N23 Metric- Tank to 23 m Special Version N6700 Complete Product Designation Installation and Operations Manual...
- Page 74 © 2014 Varec, Inc. All Rights Reserved. This document is for information purposes only. Varec, Inc. makes no warranties, express or implied, in this summary. The names of actual companies and products mentioned herein may be the trademarks of their respective owners.