ICEweb has nearly 100 Control, Instrumentation, Fire & Gas, Safety Instrumented Systems core pages and a total of more than 300 pages - It Really is Cool Engineering - By Engineers for Engineers it must be just about the World's first choice for Technical Information.

Whilst every effort is made to ensure technical accuracy of the information supplied on iceweb.com.au, Keyfleet Pty Ltd and its employees accept no liability for any loss or damage caused by error or omission from the data supplied. Users should make and rely on their own independent inquiries. By accessing the site users accept this condition. Should you note any error/omission or an article offends please do not ignore it, contact the webmaster and we will review, rectify and remove as necessary.

The following references are from sources which provide what ICEweb considers to be the best technical and educational information on the subject. We always acknowledge the author and source. Should there be any issue with ICEweb providing this information, please contact us and we will remove it immediately. We also welcome non-commercial technical documents (subject to editorial review) and post them free.

Process Samplers

The Majority of technical links on this page are from DOPAKŪ Sampling Systems and our sponsor Prochem who Are Experts In This Area - It Is Their Support Which Makes ICEweb Available.

Go to Specific Subject: Introduction to Process Sampling | Specifications for Process Samplers | Process Liquid Samplers | Process Solid Samplers | Liquified Gas Process Samplers | Gas Process Samplers | Process Sampler Installation, Maintenance, Safety, Storage & Handling Instructions | Process Sampling Containers | Process Sampler Applications | Other Process Sampler Links |

Introduction to Process Sampling

Drawing process samples in open containers invites contamination and inaccuracy, and also poses serious health, safety and environmental risks. Due to the growing complexity of the industrial processes in general and more specific for processes in the (petro)chemical and pharmaceutical industries, the need for tests and analyses increases continuously. The need for representative samples plays a critical role in ensuring product verification. Yet sampling directly from the process often includes the risks of exposure to the operator, as well as contamination and pollution to the environment.

DOPAKŪ Sampling Systems  - Samplers for liquids, gases, liquefied gases and solids.  The DOPAKŪ Sampling Systems concept is widely used and accepted among the leaders in the chemical and petrochemical industry. DOPAKŪ track record is easily explained because DOPAKŪ Sampling Systems solves the problem of taking samples of toxic, dangerous and volatile substances. With DOPAKŪ Sampling Systems closed vent samplers for liquids, gas, liquefied gas and solids, the operator is better shielded from contact with the product being sampled and local spillage can be avoided meaning volatile substances are prevented from escape into the atmosphere. Safety in the widest sense is highly improved. Sampling directly from the process increases the risk of contaminated samples. It also increases the risk of exposure to toxic and dangerous substances for the operators, as well as polluting the environment. The patented design of the Dopak sampling systems and because they are easy to operate, reduces the risks to virtually zero.

DOPAKŪ Sample Containers - DOPAKŪ offers two types of sample containers namely bottles, sealed with cap and septum and cylinders. The type of container used is of influence on the type of sampling system.

Sampling in Cylinders - A sample is drawn from the process and arrives at process pressure in the sample container. The container consists of a cylinder at both ends equipped with a needle valve and a quick connect coupling. The cylinder is connected to the sampler. Once in position, the product can flow through the sample cylinder. When sampling liquefied gases, a fixed amount of liquid is transferred to the expansion chamber to ensure partial filling of the cylinder. The operator closes the needle valves on the sample cylinder and allows the quick connect to be depressurised to a vent connection. The cylinder may be then disconnected from the sampler.

Sampling in Bottles - A sample is drawn from the process and arrives at atmospheric pressure in the sample container. The container consists of a bottle sealed with cap and septum which is inserted into the sleeve until the septum is pierced by the needles extending from the needle assembly. Once in position, the product can flow into the sample bottle via the process needle, while air and gases are being vented by the vent needle. When the required amount has been taken, the operator stops the product flow and the bottle is pulled out of the sleeve. The septum reseals automatically. In applications where a cap and septum cannot be used, DOPAKŪ offers a seal ring on top of the sleeve, in combination with a filling assembly.

Introduction to Sampling - This sampler solves the problem of taking samples of toxic, dangerous and volatile substances. it has the following advantages

Grab Sampling Systems: Maintaining Quality and Safety -The need for representative samples plays a critical role in ensuring product verification. Yet sampling directly from the process often includes the risks of exposure to the operator as well as contamination and pollution to the environment. The DOPAKŪ sampling method reduces such risks with its patented design and simple method of operation. The bulletin also includes details of sampling in bottles and cylinders. In addition many applications are detailed.


Specifications for Process Samplers

Specifications and Datasheets for Samplers - Covers a wide range of samplers


Process Liquid Samplers

Liquid Samplers - These Samplers take representative samples of liquids with low vapour pressures at low process pressures. Applications include Liquids at lower pressure, Sampling with lower vapour pressures, Corrosive, hazardous liquids, Viscous fluids, slurries and Sampling from pipelines and tanks.

Typical Configurations - These links show excellent details of the sampler configurations. 

DPM Series - Liquid sampler to take representative samples of liquids with low vapour pressures at low process pressures. Purge options are available.

Applications

Liquids at lower pressure Sampling with lower vapour pressures Corrosive, hazardous liquids Viscous fluids, slurries Sampling from pipelines and tanks

HD Series - Liquid sampler to take representative samples of liquids with low vapour pressures at low process pressures by using process valves.

Applications

Liquids at lower pressure Sampling with lower vapour pressures Corrosive, hazardous liquids Viscous fluids, slurries Sampling from pipelines and tanks Fire safe antistatic valves

DPJ Series - Liquid sampler to take representative samples of liquids with higher viscosities by using piston valves. Outlet of sample valve will be purged to ensure zero dead volume.

Applications

Fixed volume Corrosive, hazardous liquids Viscous fluids, slurries Sampling from pipelines, tanks and reactors Vacuum conditions Liquids at low and elevated pressures High temperature

DPT Series - Liquid sampler to take representative samples of liquids with low vapour pressures at low process pressures by using in line valves.

Applications

In line liquid sampling Corrosive hazardous liquids Viscous fluids, slurries Sampling from pipelines

S23 Series - Liquid sampler with internally coupled valves to take predefined quantities of liquids with low vapour pressures independent of process pressures with zero dead volume.

Applications

Fixed volume sampling Liquid sampling at low and elevated pressures Corrosive, hazardous liquids Sampling from pipelines and pump around loop from reactors Small 1cc sampling

S32 Series -  Liquid sampler with externally coupled valves to take representative samples of liquids from reactors at vacuum conditions or predefined quantities of fluids with low vapour pressures independent of process pressures.

Applications

Liquid Sampling at low and elevated pressures Corrosive, hazardous liquids Sampling from process lines or from top of reactor below atmospheric conditions Viscous fluids, slurries

S32-LG Series - Liquefied gas (LPG) sampler with externally coupled valves to take respresentative samples of liquefied gases or liquids in cylinders with internal or external outage. Purge options are available.

Applications

Liquefied gas sampling Fixed external outage High vapour pressure liquids Zero quick connect vapour release

S32-LG System Purge Configuration (F1) - The ability to purge the sample point ensures optimal retrieval of a representative, contamination free sample. The S32-LG type samplers provide a system purge in addition to sampling in a sample cylinder with a predefined filling rate. The predefined filling rate is achieved by using an expansion chamber. The unique design offers a one handle operation by multiple valves. These features provide sample accuracy and safety. This sampler type is suitable for liquefied gases and liquids. See the Video.

S32-LG Vent to Flare Configuration (F2) - The ability to purge the sample point ensures optimal retrieval of a representative, contamination free sample. The S32-LG type samplers provide a system purge in addition to sampling in a sample cylinder with a predefined filling rate. This is achieved by using an expansion chamber. This system is equipped with an additional valve on the process outlet in order to ensure filling of the cylinder with liquid when difference between inlet and outlet pressure is significant. The unique design offers a one handle operation by multiple valves. This sampler type is suitable for liquefied gases and liquids . See the Video.

S32-LG Outage Tube Configuration (F3) - The ability to purge the sample point ensures optimal retrieval of a representative, contamination free sample. The S32-LG type samplers provide system purge in addition to sampling in a sample cylinder with a predefined filling rate. The predefined filling rate is achieved by using an outage tube in the sample cylinder. The unique design offers a one handle operation by multiple valves. These features provide sample accuracy and safety. This sampler type is suitable for liquefied gases and liquids. See the Video.

S32-LG Purge Expansion Configuration (F4) - The ability to purge the sample point ensures optimal retrieval of a representative, contamination free sample. The S32-LG type samplers provide a system purge in addition to sampling in a sample cylinder with a predefined filling rate. This is achieved by using an expansion chamber. The system is equipped with an extra valve on the expansion chamber to enable purging of the expansion chamber with an inert gas for product with a boiling point around atmospheric conditions. The unique design offers a one handle operation by multiple valves. This sampler type is suitable for liquefied gases and liquids. See the Video.

S32-LG Bypass Purge Cylinder Configuration (F5) - The ability to purge the sample point ensures optimal retrieval of a representative, contamination free sample. The S32-LG type samplers provide a system purge in addition to sampling in a sample cylinder with predefined filling rate. The predefined filling rate is achieved by using an expansion chamber. This system is equipped with a purge facility to enable purging of the sample cylinder connections with an inert gas. The unique design offers a one-handle operation by multiple valves. These features provide sample accuracy and safety. This sampler type is suitable for liquefied gases and liquids. See the Video.

S32-LG Outage Tube with Bypass Purge Cylinder Configuration (F6) - The ability to purge the sample point ensures optimal retrieval of a representative, contamination free sample. The S32-LG type samplers in bypass purge cylinder configuration provide a system purge in addition to sampling in a sample cylinder with predefined filling rate. The predefined filling rate is achieved by using an outage tube. This system is equipped with a purge facility to enable purging of the sample cylinder connections with an inert gas. The unique design offers a one-handle operation by multiple valves. These features provide sample accuracy and safety. This sampler type is suitable for liquefied gases and liquids. See the Video.

S32-LG Process to Flare with Outage Tube Configuration (F7) - The ability to purge the sample point ensures optimal retrieval of a representative, contamination free sample. The S32-LG type samplers provide system purge to a flare connection in addition to sampling in a sample cylinder with predefined filling rate. The predefined filling rate is achieved by using an outage tube in the sample cylinder. The unique design offers a one-handle operation by multiple valves. These features provide sample accuracy and safety. This sampler type is suitable for liquefied gases and liquids. See the Video.

S32-LG System Purge with Additional Safety Expansion Cylinder Configuration (F8) - The ability to purge the sample point ensures optimal retrieval of a representative, contamination free sample. The S32-LG type samplers provide a system purge in addition to sampling in a sample cylinder and the ability to depressurise the quick connect couplings before disconnecting the sample cylinder. The unique design offers a one handle operation by multiple valves. Furthermore, it offers 100% filling rate, since the main cylinder is equipped with an additional safety expansion cylinder. Should pressure build-up occur in the main cylinder, the relief valve opens to the safety cylinder. These features provide sample accuracy and safety. See the Video.

Open Liquid Sampling from Storage Tanks, Drums, Bags and Process Lines - Liquids at atmospheric pressure, Low hazardous liquids, Sampling from storage tanks, drums and pipelines and Fixed Volume Sampling

Vessel Liquid Sampler c/w Dip Pipe with Submerged Pump - This new arrangement allows for sampling of liquids from the top of large vessels (with or without agitator) where insufficient vacuum can be created to lift the liquid from the vessel.


Process Solid Samplers

Solid Samplers- These samplers are used for applications such as Solid Sampling at atmospheric pressure, Sampling from bags, Sampling granulates, Powders, Grease and Fixed Volume sampling.

DOPAKŪ Sampler Type DPVS  

DOPAKŪ Sampler Type DPGM

DOPAKŪ Sampler Type DPSM

Open Solid Sampling from Storage Tanks, Drums, Bags and Process Lines - Solid sampling at atmospheric pressure, Sampling from bags, Sampling granulates-powders-grease and Fixed volume sampling.


Liquified Gas Process Samplers

S32-LG Series - Liquefied gas (LPG) sampler with externally coupled valves to take representative samples of liquefied gases or liquids in cylinders with internal or external outage. Purge options are available.

Applications

Liquefied gas sampling Fixed external outage High vapour pressure liquids Zero quick connect vapour release

S32-LG System Purge Configuration (F1) - The ability to purge the sample point ensures optimal retrieval of a representative, contamination free sample. The S32-LG type samplers provide a system purge in addition to sampling in a sample cylinder with a predefined filling rate. The predefined filling rate is achieved by using an expansion chamber. The unique design offers a one handle operation by multiple valves. These features provide sample accuracy and safety. This sampler type is suitable for liquefied gases and liquids. See the Video.

S32-LG Vent to Flare Configuration (F2) - The ability to purge the sample point ensures optimal retrieval of a representative, contamination free sample. The S32-LG type samplers provide a system purge in addition to sampling in a sample cylinder with a predefined filling rate. This is achieved by using an expansion chamber. This system is equipped with an additional valve on the process outlet in order to ensure filling of the cylinder with liquid when difference between inlet and outlet pressure is significant. The unique design offers a one handle operation by multiple valves. This sampler type is suitable for liquefied gases and liquids . See the Video.

S32-LG Outage Tube Configuration (F3) - The ability to purge the sample point ensures optimal retrieval of a representative, contamination free sample. The S32-LG type samplers provide system purge in addition to sampling in a sample cylinder with a predefined filling rate. The predefined filling rate is achieved by using an outage tube in the sample cylinder. The unique design offers a one handle operation by multiple valves. These features provide sample accuracy and safety. This sampler type is suitable for liquefied gases and liquids. See the Video.

S32-LG Purge Expansion Configuration (F4) - The ability to purge the sample point ensures optimal retrieval of a representative, contamination free sample. The S32-LG type samplers provide a system purge in addition to sampling in a sample cylinder with a predefined filling rate. This is achieved by using an expansion chamber. The system is equipped with an extra valve on the expansion chamber to enable purging of the expansion chamber with an inert gas for product with a boiling point around atmospheric conditions. The unique design offers a one handle operation by multiple valves. This sampler type is suitable for liquefied gases and liquids. See the Video.

S32-LG Bypass Purge Cylinder Configuration (F5) - The ability to purge the sample point ensures optimal retrieval of a representative, contamination free sample. The S32-LG type samplers provide a system purge in addition to sampling in a sample cylinder with predefined filling rate. The predefined filling rate is achieved by using an expansion chamber. This system is equipped with a purge facility to enable purging of the sample cylinder connections with an inert gas. The unique design offers a one-handle operation by multiple valves. These features provide sample accuracy and safety. This sampler type is suitable for liquefied gases and liquids. See the Video.

S32-LG Outage Tube with Bypass Purge Cylinder Configuration (F6) - The ability to purge the sample point ensures optimal retrieval of a representative, contamination free sample. The S32-LG type samplers in bypass purge cylinder configuration provide a system purge in addition to sampling in a sample cylinder with predefined filling rate. The predefined filling rate is achieved by using an outage tube. This system is equipped with a purge facility to enable purging of the sample cylinder connections with an inert gas. The unique design offers a one-handle operation by multiple valves. These features provide sample accuracy and safety. This sampler type is suitable for liquefied gases and liquids. See the Video.

S32-LG Process to Flare with Outage Tube Configuration (F7) - The ability to purge the sample point ensures optimal retrieval of a representative, contamination free sample. The S32-LG type samplers provide system purge to a flare connection in addition to sampling in a sample cylinder with predefined filling rate. The predefined filling rate is achieved by using an outage tube in the sample cylinder. The unique design offers a one-handle operation by multiple valves. These features provide sample accuracy and safety. This sampler type is suitable for liquefied gases and liquids. See the Video.

S32-LG System Purge with Additional Safety Expansion Cylinder Configuration (F8) - The ability to purge the sample point ensures optimal retrieval of a representative, contamination free sample. The S32-LG type samplers provide a system purge in addition to sampling in a sample cylinder and the ability to depressurise the quick connect couplings before disconnecting the sample cylinder. The unique design offers a one handle operation by multiple valves. Furthermore, it offers 100% filling rate, since the main cylinder is equipped with an additional safety expansion cylinder. Should pressure build-up occur in the main cylinder, the relief valve opens to the safety cylinder. These features provide sample accuracy and safety. See the Video.


Gas Process Samplers

S32-G Series - Gas sampler with externally coupled valves to take representative samples of gases in cylinders. Purge options are available.

Applications - Gas sampling

S32-G System Purge Configuration (G1) - The ability to purge the sample point ensures optimal retrieval of a representative, contamination free sample. The S32-G type samplers provide a system purge in addition to sampling in a sample cylinder and the ability to depressurise the quick connect couplings before disconnecting the sample cylinder. The unique design offers a one handle operation by multiple valves. These features provide sample accuracy and safety . See the Video.

S32-G Bypass Purge Cylinder Configuration (G2) - The ability to purge the sample point ensures optimal retrieval of a representative, contamination free sample. The S32-G type samplers provide a system purge in addition to sampling in a sample cylinder, to purge the sample cylinder connections and the ability to depressurise the quick connect couplings before disconnecting the sample cylinder. The unique design offers a one-handle operation by multiple valves. These features provide sample accuracy and safety . See the Video.

S32-G Process to Flare Configuration (G3) - The ability to purge the sample point ensures optimal retrieval of a representative, contamination free sample. The S32-G type samplers provide a system purge to a flare connection in addition to sampling in a sample cylinder and the ability to depressurise the quick connect couplings before disconnecting the sample cylinder. The unique design offers a one-handle operation by multiple valves. These features provide sample accuracy and safety . See the Video.


Process Sampler Installation, Maintenance, Safety, Storage & Handling Instructions 

Installation, Maintenance, Safety, Storage and Handling Instructions - In accordance with the requirements of the European Equipment Directive 97/23/EC and 99/36/EC. This document provides installation, maintenance, storage and handling instructions for DOPAK Sampling Systems series DPM, HD, DPJ, DPT, S23, S32, S32-(L)G, DPO and Sample Stations.


Process Sampling Containers

Sampling Containers - This link covers;
- Sampling in bottles - A sample is drawn from the process and arrives at atmospheric pressure in the sample container.
- Sampling in containers - A sample is drawn from the process and arrives at process pressure in the sample container.


Process Sampler Applications

Applications for DopakŪ Sampling Systems - This link provides a list of typical applications for DopakŪ Sampling Systems in Refining, Petro-Chemical, Pharmaceutical, Pulp / Paper and Power Generation.


Other Process Sampler Links

Powder or Granule Stream samplers - These samplers can be used to sample almost any powder or granule stream by either a composite, batch or grab sample.  The design prevents exposure of the operators to any hazardous process media as collection is always isolated from process and can’t be left open.  From our sponsor Zedflo

Accurate Composite Sampling of Natural Gas - To ensure ACCURATE sampling of natural gas, the sample taken must be repeatable and representative of the product flowing in the pipeline, per GPA 2166-88, this technical bulletin lists three essentials - from Haldatec

Oil & Liquid Hydrocarbon Sampling - Sampling liquids usually takes two forms, spot or representative. Spot samples are taken at one time at one point, normally via a pitot tube inserted in the process or pipeline. The sample is collected in a sample cylinder and taken to a laboratory for analysis.This form of sampling will only give a sample that is representative at one point in time only. Alternatively, Representative samples of light oil or condensate are collected using a by-pass sampler mounted adjacent to the pipe or mounted directly on the pipe. Grab samples are then collected in a sample cylinder over a period, for later analysis in a laboratory - from Haldatec

Standard Practice for Manual Sampling of Petroleum and Petroleum Products - This standard provides guidance on manual sampling terminology, concepts, equipment, containers, procedures, and will provide some specific guidance related to particular products and tests. The type and size of the sample obtained, and the handling method, will depend on the purpose for which it was taken. Refer to the test method for any specific sampling and handling requirements up to the point of testing. It remains the responsibility of the subcommittee for the relevant test method to provide guidance, or warnings, regarding sample container selection; preparation; cleanliness; heat, pressure, or light; sample size requirements for testing and retention; and any other special handling requirements necessary to ensure a representative sample is tested.  This document has been developed jointly between the American Petroleum Institute (API) and ASTM International.

The Following Technical Papers are from Sentry Equipment Corporation.
What you Need to Know to Select an Automatic Sampler - Richard Bassett - This article discusses three basic modes and types of automatic samplers and explore the factors that should be considered before selecting a model for your application. It includes a useful application Datasheet.
Sampling Liquid Petroleum Gas (and other high vapour pressure gas/liquids) - The primary purpose of this technical note is to provide insight into the history and issues related to the sampling of Liquid Petroleum Gas (LPG) and other high vapour pressure liquids and to provide recommendations for accurate, safe and environmentally compliant sampling methods - from Sentry Equipment Corporation.

Existing Process Sampling Methods and New Sampling devices for the Process Industry - Kevin Cook - Sampling is typically a major concern for most plants since product samples must be representative and accurate. Environmental and safety concerns related to sample taking of toxic or hazardous materials are also having a larger impact on the development of sampling devices - From Tyco.