Welker LS-14 User manual

INSTALLATION, OPERATION, ANDMAINTENANCEMANUAL
WELKER CONSTANTPRESSURESAMPLECONTAINER
MODEL
LS-14

DRAWING NUMBERS
AD245.HCRN
AD245CRN
AD245CV

MANUAL NUMBER
IOM-131

REVISION
Rev. F, 9/11/2019

TABLEOFCONTENTS
2IOM-131 MODEL: LS-14 REV: F 13839 West Bellfort Street, Sugar Land, TX 77498 welker.com Service Department 281.491.2331
Copyright © 2019 Welker, Inc. All rights reserved. Welker®, W Welker®, W logo, WelkerScope®, Welker Jet®, and OdorEyes® are registered trademarks of Welker, Inc.
 SAFETY 3
1. PRODUCT INFORMATION 4
1.1 Introduction 4
1.2 Product Description 4
1.3 Specifications 5
1.4 Equipment Diagrams 7
  
2. INSTALLATION & OPERATION 14
2.1 Before You Begin 14
2.2 Installation 14
2.3 Preparing forSampling 19
2.4 Composite Sampling 20
  
3. MAINTENANCE 22
3.1 Before You Begin 22
3.2 Maintenance 22
3.3 Troubleshooting 30
  
 APPENDIX 32
 A: Referenced or Attached Documents 32


IMPORTANTSAFETYINFORMATION
READALLINSTRUCTIONS
Notes emphasize information and/or provide additional information to assist the user.
Caution messages appear before procedures that could result in damage to equipment if not observed.
Warning messages appear before procedures that could result in personal injury if not observed.
This manual is intended to be used as a basic installation and operation guide for the Welker Constant Pressure Sample Container, LS-14. For comprehensive
instructions, please refer to the IOM Manuals for each individual component. A list of relevant component IOM Manuals is provided in Appendix A of this manual.
The information in this manual has been carefully checked for accuracy and is intended to be used as a guide for the installation, operation, and maintenance of
the Welker equipment described in this manual. Correct installation and operation, however, are the responsibility of the end user. Welker reserves the right to make
changes to this manual and all products in order to improve performance and reliability.
BEFOREYOUBEGIN
Read these instructions completely and carefully.
IMPORTANT - Save these instructions for local inspector's use.
IMPORTANT - Observe all governing codes and ordinances.
Note to Installer - Leave these instructions with the end user.
Note to End User - Keep these instructions for future reference.
Installation of this Constant Pressure Sample Container is of a mechanical and electrical nature.
Proper installation is the responsibility of the installer. Product failure due to improper installation is not covered under the warranty.
If you received a damaged Constant Pressure Sample Container, please contact a Welker representative immediately.
Phone: 281.491.2331
Address: 13839 West Bellfort Street
Sugar Land, TX 77498
SAFETY
3IOM-131 MODEL: LS-14 REV: F 13839 West Bellfort Street, Sugar Land, TX 77498 welker.com Service Department 281.491.2331

1.1 Introduction
We appreciate your business and your choice of Welker products. The installation, operation, and maintenance liability for this
equipment becomes that of the purchaser at the time of receipt. Reading the applicable Installation, Operation, and
Maintenance (IOM) Manuals prior to installation and operation of this equipment is required for a full understanding of its
application and performance prior to use.*
If you have any questions, please call Welker at 1-281-491-2331.
*The following procedures have been written for use with standard Welker parts and equipment. Assemblies that have been modified may have additional
requirements and specifications that are not listed in this manual.
1.2 Product Description
The Welker LS-14 Constant Pressure Sample Container is designed to collect, retain, and mix large volumes of representative
composite sample.
The LS-14 can be integrated into a system with a pneumatically driven sample pump that interfaces with a Programmable Logic
Controller (PLC) or other signal control system for proportional to flow or timed collection of sample grabs. Product level can be
visually verified on site by referring to the volume indicator with tracker magnet on the LS-14.
Engineered features ensure that the sample is retained and representative for laboratory analysis. The connected inert gas supply
applies and maintains constant pressure on the sample in the LS-14 to prevent vaporization and the escape of entrained gases.
An operator can manually actuate the mixing plate in the LS-14 to thoroughly mix the sample prior to transfer to a transportable
container for laboratory analysis.
Optional equipment can be added to enable remote operation: a controller to take samples automatically, an electro-hyrdaulic
supply to drive the incorporated sample pump, a magnetostrictive level indicator to communicate product level to the PLC, and
a proximity switch to signal the PLC once the desired volume of sample has been collected.

For this manual, the term "PLC," or Programmable Logic Controller, will be used to refer to the PLC, DCS, or other signal control
system used by the customer to activate and operate the solenoid.
Welker may custom design the LS-14 to suit the particular application and specifications of each customer.
SECTION 1: PRODUCTINFORMATION
4IOM-131 MODEL: LS-14 REV: F 13839 West Bellfort Street, Sugar Land, TX 77498 welker.com Service Department 281.491.2331

1.3 Specifications

The specifications listed in this section are generalized for this equipment. Welker can modify the equipment according to your
company's needs. Please note that the specifications may vary depending on the customization of your equipment.
Table 1: LS-14 Specifications
Products Sampled Condensate, Light Crude Oil, Light Liquid Hydrocarbons, Liquid Petroleum Gas,
Natural Gas Liquids, and Refined Products
Materials of Construction 316/316LStainless Steel, Aluminum, Carbon Steel, PTFE, and Viton®
Others Available
Maximum Allowable
Operating Pressure
2160 psig @ -20 °F to 100 °F (148 barg @ -28 °C to 37 °C)
Others Available
Connections
Composite SampleDraw Off: ¼" FNPT
Inert Gas Supply Fill Inlet: ¼" FNPT
Pneumatic Supply Inlet (Optional): ¼" Tubing
Product Return: ¼" FNPT
Sample Inlet: ¼" FNPT
Utility Requirements 5 or 10 USGallon Hydraulic Oil Reservoir (Optional)
Inert Gas Supply
Electrical Connections
Electro-hydraulic Unit (EHUC) (Optional): AC 110 V, AC 220 V, or AC 480 V, ¾" FNPT
Magnetostrictive Level Indicator (Optional): DC 24 V, 4–20 mA Output, ¾" FNPT
Solenoid(s): AC 110 V, AC 240 V, DC 12 V, or DC 24 V
Volume
1½ USGallons @ 80%
3 USGallons @ 80%
5 USGallons @ 80%
10 USGallons @ 80%
Operation Hydraulic or Pneumatic Mixer Actuation
Dimensions
12" x 12" Mounting Plate (Standard)
24" x 28" x 2" (Length x Width x Height) Painted Carbon Steel Skid
36" x 22" x 2" (Length x Width x Height) Painted Carbon Steel Skid With Center Post
42" x 30" x 2" (Length x Width x Height) Painted Carbon Steel Skid With Center Post
Features
Composite Sample Draw Off Port/Valve
Inert Gas Supply Tank
Inert Gas Supply Tank Port/Valve
Manifold Block
Mixer Actuation Solenoid
Plate Mixer
Pressure Gauges
Product Return Port/Valve
Sample Inlet Port / CheckValve
Skid WeldAssembly
VisualMagnetic Volume Indicator
5IOM-131 MODEL: LS-14 REV: F 13839 West Bellfort Street, Sugar Land, TX 77498 welker.com Service Department 281.491.2331

Table 1: LS-14 Specifications (Continued)
Options
Digital Controller
Electro-hydraulic Unit
Flow Switch
Magnetostrictive LevelIndicator
Pneumatic Supply Conditioning System
Proximity Switch
Solenoid(s)
Welker AVA-2 Volume Analyzer
Welker inLoop™ Crude OilSampler
Welker MPS-2 Gas Sampler
Welker SSO-9M Mini Injection Pump
Welker SSO-9MEDInjection Pump
CRNCertification
6IOM-131 MODEL: LS-14 REV: F 13839 West Bellfort Street, Sugar Land, TX 77498 welker.com Service Department 281.491.2331

1.4 Equipment Diagrams
Figure 1: Standard LS-14 Connections Diagram
7IOM-131 MODEL: LS-14 REV: F 13839 West Bellfort Street, Sugar Land, TX 77498 welker.com Service Department 281.491.2331

Figure 2: CRN-Certified LS-14 Connections Diagram
8IOM-131 MODEL: LS-14 REV: F 13839 West Bellfort Street, Sugar Land, TX 77498 welker.com Service Department 281.491.2331

Figure 3: CRN-Certified LS-14 WithOptional Hydraulic Mixer Actuation Connections Diagram
9IOM-131 MODEL: LS-14 REV: F 13839 West Bellfort Street, Sugar Land, TX 77498 welker.com Service Department 281.491.2331

Figure 4: Standard LS-14 Diagram
10 IOM-131 MODEL: LS-14 REV: F 13839 West Bellfort Street, Sugar Land, TX 77498 welker.com Service Department 281.491.2331

Figure 5: CRN-Certified LS-14 Diagram
11 IOM-131 MODEL: LS-14 REV: F 13839 West Bellfort Street, Sugar Land, TX 77498 welker.com Service Department 281.491.2331

Figure 6: CRN-Certified LS-14 With Optional Hydraulic Mixer Actuation Diagram
12 IOM-131 MODEL: LS-14 REV: F 13839 West Bellfort Street, Sugar Land, TX 77498 welker.com Service Department 281.491.2331

Figure 7: Electro-hydraulic Unit (EHUC) Diagram (Optional)
13 IOM-131 MODEL: LS-14 REV: F 13839 West Bellfort Street, Sugar Land, TX 77498 welker.com Service Department 281.491.2331

2.1 Before You Begin

After unpacking the unit, check the equipment for compliance and any damage that may have occurred during shipment.
Immediately contact a Welker representative if you received damaged equipment.


When sealing fittings with PTFE tape, refer to the proper sealing instructions for the brand used.
2.2 Installation
1. Locate the skid as close as possible to the sample point.
2. Mount the skid to a flat, level surface, such as a concrete slab.
3. Connect a grounding wire to the grounding lug on the skid to safely ground the system (Figure 4, Figure 5, or Figure 7).
4. Ensure that all valves on the LS-14 are closed (Figure 4, Figure 5, or Figure 6).
5. Using appropriately sized tubing, connect from purge/return valve D to the pipeline (Figure 4, Figure 5, or Figure 6).
6. As necessary, connect a sampler to the sample inlet on the manifold block (Figure 1, Figure 2, or Figure 3).
7. As necessary, connect from the solenoid to the sampler (Figure 1, Figure 2, or Figure 7).
8. Apply pressure from the sampler to the manifold block. Check for leaks and repair as necessary.
9. As necessary, fill the reservoir of the air lubricator/oiler to the maximum fill line with oil compatible with the seal
material (Figure 8). Refer to the Installation, Operation, and Maintenance (IOM) Manual for the air lubricator/oiler for
instructions on filling the reservoir and for recommendations on the type of oil to use.

Figure 8: Pneumatic Supply Conditioning System

10. As necessary, connect a clean, dry pneumatic supply to the pneumatic supply inlet on the regulator (Figure 8).
11. As necessary, open the reservoir cap on the EHUC, and then fill the EHUC with the appropriate volume of ISO 46
hydraulic oil (Figure 7).
SECTION 2: INSTALLATION&OPERATION
14 IOM-131 MODEL: LS-14 REV: F 13839 West Bellfort Street, Sugar Land, TX 77498 welker.com Service Department 281.491.2331

12. As necessary, connect an appropriate electrical supply to the EHUC (Figure 3).
13. As necessary, connect a DC 24 V electrical supply to the level indicator (Figure 2 or Figure 3).
14. As necessary, connect the solenoid to the PLC. Refer to industry standards for appropriate electrical connections to
interface with the PLC.
15. As necessary, set the PLC to the desired proportional to flow sampling frequency based on the sampling actuation
equations provided (Figure 9).

Figure 9: Sampling Frequency Equations

Never fill the cylinder above 80% of its capacity. Allow at least 20% room for product expansion should the cylinder be exposed
to increased temperatures.

Note that there are 3,785 cc in 1 US gallon. The LS-14 may be 1½, 3, 5, or 10 USgallons at 80%.
15 IOM-131 MODEL: LS-14 REV: F 13839 West Bellfort Street, Sugar Land, TX 77498 welker.com Service Department 281.491.2331

Filling the Inert Gas Supply Tank

The inert gas being used to pre-charge the LS-14 must be compatible with the seals in the LS-14. Welker recommends using
nitrogen or helium as the inert gas supply.

The relief valves and gauges must be adequate for the pressure used to pre-charge the LS-14.

Pre-charging must be complete before product is supplied to the system.

Inert gas tanks are shipped empty from the manufacturer.

16. Determine the configuration of the inert gas supply valves on the LS-14 (Figure 10). If the LS-14 is equipped with option
1, continue to step 17. If the LS-14 is equipped with option 2, proceed to step 27.

Figure 10: Inert Gas Supply Valve Configuration Options
16 IOM-131 MODEL: LS-14 REV: F 13839 West Bellfort Street, Sugar Land, TX 77498 welker.com Service Department 281.491.2331

Inert Gas Supply Valve Configuration Option 1

Filling the inert gas supply tank with inert gas supply tank isolation valve C open also pre-charges the LS-14.
Figure 11: Inert Gas Supply Valve Configuration Option 1
17. Connect an appropriate customer-supplied nitrogen or other inert gas supply container to inert gas supply tank fill valve
B located between the valve on the inert gas supply tank (valve A) and the isolation valve (valve C) (Figure 11).
18. Open valves A and C, and then slowly open valve B (Figure 11).
19. Allow the inert gas supply tank to fill.
20. While filling the inert gas supply tank, refer to the pre-charge side pressure gauge to monitor the pressure of the tank
(Figure 4).
21. If the product side pressure gauge shows pressure, open purge/return valve D to lower the piston and relieve pressure
within the LS-14 (Figure 4).
22. Fill the inert gas supply tank until the pre-charge side pressure gauge reads 50–100 psig above pipeline operating
pressure, not to exceed the maximum allowable operating pressure of the LS-14.
23. Once full, close valve B and disconnect the customer-supplied inert gas supply container. Valves A andC must remain
open (Figure 11).
24. Plug the port of valve B by wrapping the threads of a male hex plug withPTFEtape and screwing it into the port of
valve B (Figure 11). Valve B must remain plugged at all times except when adding inert gas to the inert gas supply tank.
25. Check all connections between the inert gas supply tank and the receiver cylinder for leaks. Repair as necessary.
26. If the LS-14 will use pneumatics for mixer actuation, proceed to step 37. If the LS-14 will use hydraulics for mixer
actuation, proceed to Section 2.3, Preparing for Sampling.
17 IOM-131 MODEL: LS-14 REV: F 13839 West Bellfort Street, Sugar Land, TX 77498 welker.com Service Department 281.491.2331

Inert Gas Supply Valve Configuration Option 2
Figure 12: Inert Gas Supply Valve Configuration Option 2
27. Connect an appropriate customer-supplied nitrogen or other inert gas supply container to inert gas supply tank fill valve
B located in front of the pre-charge pressure gauge (Figure 12).
28. Open valve A, and then slowly open valve B (Figure 12).
29. Allow the inert gas supply tank to fill.
30. While filling the inert gas supply tank, refer to the pre-charge side pressure gauge to monitor the pressure of the tank
(Figure 5 or Figure 6).
31. If the product side pressure gauge shows pressure, open purge/return valve D to lower the piston and relieve pressure
within the LS-14 (Figure 5 or Figure 6).
32. Fill the inert gas supply tank until the pre-charge side pressure gauge reads 50–100 psig above pipeline operating
pressure, not to exceed the maximum allowable operating pressure of the LS-14.
33. Once full, close valve B and disconnect the customer-supplied inert gas supply container. Valve A must remain open
(Figure 12).
34. Plug the port of valve B by wrapping the threads of a male hex plug withPTFEtape and screwing it into the port of
valve B (Figure 12). Valve B must remain plugged at all times except when adding inert gas to the inert gas supply tank.
35. Check all connections between the inert gas supply tank and the receiver cylinder for leaks. Repair as necessary.
36. If the LS-14 will use pneumatics for mixer actuation, continue to step 37. If the LS-14 will use hydraulics for mixer
actuation, proceed to Section 2.3, Preparing for Sampling.
Regulating the Pneumatic Supply (As Necessary)
37. Turn on the pneumatic supply.
38. Regulate the pneumatic supply to approximately 40–45 psig.
18 IOM-131 MODEL: LS-14 REV: F 13839 West Bellfort Street, Sugar Land, TX 77498 welker.com Service Department 281.491.2331

2.3 Preparing for Sampling
1. Open the pipeline connection.
2. As necessary, adjust the sample volume on the sampler. Refer to the Installation, Operation, and Maintenance (IOM)
Manual for the sampler for instructions on adjusting the sample volume.
3. TurnONpower to the system.
4. As necessary, manually turnON the motor starter for the EHUC (Figure 7).
5. Purge the LS-14 prior to beginning composite sampling.
Purging the LS-14

Welker recommends that the LS-14 be evacuated or purged prior to each sample batch to prevent cross-contamination
between samples.

6. Open sample container isolation valve E (Figure 4, Figure 5, or Figure 6). Ensure that composite sample draw off valve F
is closed.
7. Begin product flow through the system.
8. Open purge/return valve D (Figure 4, Figure 5, or Figure 6).
9. Manually or remotely actuate the sampler to purge the line of air or previous product.
10. Once all previous product has drained from the LS-14, close purge/return valve D (Figure 4, Figure 5, or Figure 6).
Verifying Sampler Operation
11. Close sample container isolation valve E (Figure 4, Figure 5, or Figure 6).
12. Manually actuate the sampler using the manual override on the solenoid.
13. Observe the product side pressure gauge on the LS-14 (Figure 4, Figure 5, or Figure 6). If the sampler is operating
correctly, a spike in pressure is shown.
14. Once sampler operation has been verified, open sample container isolation valve E on the manifold block (Figure 4,
Figure 5, or Figure 6).

Valve E on the manifold block must remain open for the duration of composite sampling.
19 IOM-131 MODEL: LS-14 REV: F 13839 West Bellfort Street, Sugar Land, TX 77498 welker.com Service Department 281.491.2331

2.4 Composite Sampling
1. If the LS-14 is equipped with inert gas supply valve configuration option 1, ensure that valves A and C on the inert gas
supply tank are open (Figure 11). If the LS-14 is equipped with inert gas supply valve configuration option 2, ensure that
valve A on the inert gas supply tank is open (Figure 12).

Valves A and C on the inert gas supply tank must remain open for the duration of composite sampling.

2. Ensure that sample container isolation valve E is open (Figure 4, Figure 5, or Figure 6).

If sample container isolation valve E is not open, product will vent through the relief valve instead of entering the LS-14.

3. As necessary, ensure that the EHUCis ON (Figure 7).
4. Ensure that the pipeline connection is open and sample is flowing to the sample receiver.
5. For sampling operation procedures, refer to the Installation, Operation, and Maintenance (IOM) Manual for the sampler.
6. The magnetic volume indicator on the LS-14 should begin to rise as product fills the LS-14.
7. Allow the LS-14 to fill to the desired volume, not to exceed 80%.

Never fill the cylinder above 80% of its capacity. Allow at least 20% room for product expansion should the cylinder be exposed
to increased temperatures.
Withdrawing Product for Transportation After Composite Sampling

Welker recommends the following transportable containers for use with this unit:
• Welker Constant Pressure Cylinders for light liquid products;
• Welker Constant Pressure Cylinders or chilled containers for Reid vapor pressure (RVP) testing; and
• capped metal or amber glass containers of the appropriate volume for retain samples.

8. As necessary, turn OFF and isolate the sampler from the LS-14.
9. To transfer sampled product to a constant pressure cylinder for laboratory analysis, connect the product side of the
constant pressure cylinder to composite sample draw off valve F (Figure 4, Figure 5, or Figure 6). The cylinder should
have a pre-charge pressure of approximately 100 psig above the product pressure in the LS-14. Refer to the Installation,
Operation, and Maintenance (IOM) Manual for the constant pressure cylinder for pre-charging instructions.
10. Prior to withdrawing sampled product from the LS-14, the operator should manually cycle the mixer four to five times
(4–5x). If the LS-14 is equipped with a pneumatic mixer, alternately press and release the mixer button on the side of
the LS-14 (Figure 4 or Figure 5). If the LS-14 is equipped with a hydraulic mixer, alternately hold up and release the
mixer lever on the EHUC (Figure 7).
11. With sample container isolation valve E open, open composite sample draw off valve F on the LS-14, and then open the
inlet valve on the constant pressure cylinder (Figure 4, Figure 5, or Figure 6).
12. Slowly open the product purge valve on the constant pressure cylinder to purge any air. Shut the valve completely once
liquid begins to purge.
13. Actuate the mixer for another three to four (3–4) complete cycles.
20 IOM-131 MODEL: LS-14 REV: F 13839 West Bellfort Street, Sugar Land, TX 77498 welker.com Service Department 281.491.2331