Process Samplers

The Majority of technical links on this page are from DOPAK^® Sampling Systems and Prochem.

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.

DOPAK® Sampling Systems - Samplers for liquids, gases, liquefied gases and solids. The DOPAK^® Sampling Systems concept is widely used and accepted among the leaders in the chemical and petrochemical industry. DOPAK^® track record is easily explained because DOPAK^® Sampling Systems solves the problem of taking samples of toxic, dangerous and volatile substances. With DOPAK^® 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.

DOPAK® Sample Containers - DOPAK^® 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, DOPAK^® 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

Safer for the operator.
Safer for the environment.
Safer for the sample (representativity).
Easy operation.
Economical.
Low maintenance.
Minimal pollution/contamination.
Eliminate spills.

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 DOPAK^® 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

On/Off A1 - The ability to connect the sampler close to the sample point ensures optimal retrieval of a representative and contamination free sample.The DPM type sampler in on/off configuration allows the product to flow directly into the sampler via a two-way valve. See the Video.
On/Off A2 - The ability to connect the sampler close to the sample point ensures optimal retrieval of a representative and contamination free sample.The DPM type sampler in on/off configuration allows the product to flow directly into the sampler via a two-way valve. See the Video.
System Purge - The ability to purge the sample point ensures optimal retrieval of a representative and contamination free sample. The DPM type sampler in system purge configuration allows product to flow continuously through the sampler ensuring a fresh sample. See the Video.
Back Purge - The ability to back purge the sample point ensures optimal retrieval of a representative and contamination free sample. The DPM type sampler in back purge configuration allows a gas to purge the sampler prior to sampling ensuring a fresh sample. See the Video.
Needle Purge - The ability to purge the sample point ensures optimal retrieval of a representative and contamination free sample. The DPM type sampler in system purge configuration allows product to flow continuously through the sampler ensuring a fresh sample and also allows to purge the needle assembly continuously before and after sampling. See the Video.
Back/Needle Purge - The ability to back purge the sample point ensures optimal retrieval of a representative, contamination free sample.The needle purge ensures there is no residue or build up in the needle after sample retrieval. The DPM type sampler in back & needle purge configuration allows purge gas to flow through the sampler ensuring a fresh sample and allows purging through the needle assembly. See the Video.
System Purge and Continuous Needle Purge - The ability to purge the sample point ensures optimal retrieval of a representative and contamination free sample. The DPM type sampler in system purge configuration allows product to flow continuously through the sampler ensuring a fresh sample and also allows to purge the needle assembly continuously before and after sampling . See the Video.
In Line, Needle Purge - The ability to purge the needle assembly, both before and after sampling, ensures there is no residue build up in the needle assembly after retrieval of a representative, contamination free sample.The DPM type of sampler in an inline needle purge configuration allows product to flow directly into the sampler via an inline sample valve. See the Video.

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

HD On/Off Configuration (B1) - The ability to connect the sampler close to the sample point, by means of an anti static, fire safe process ball valve with reduced bore and equipped with a spring return handle, ensures optimal retrieval of a representative, contamination free sample. The HD type sampler in on/off configuration allows product to flow directly into the sampler via a two way valve. See the Video.
HD On/Off Configuration (B2) - The ability to connect the sampler close to the sample point, by means of an anti static, fire safe process ball valve with reduced bore and equipped with a spring return handle, ensures optimal retrieval of a representative, contamination free sample. The HD type sampler in on/off configuration allows product to flow directly into the sampler via a two way valve. See the Video.

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

DPJ Purge Configuration (C1) - Being able to provide a jet purge adapter to a piston type sampling valve, ensures optimal retrieval of a representative, contamination free sample of high viscosity liquids. The DPJ type sampler allows purging of the sample valve outlet thus eliminating dead volume.The jet purge adapter has two flow paths. The first flow path allows the product to flow to the sample bottle and the second flow path enables the jet purge adapter to be purged with an inert gas. See the Video.
DPJ Fixed Volume Configuration (C2) - The ability to provide a jet purge adapter to a piston type sampling valve ensures optimal retrieval of a representative, contamination free sample. The DPJ type sampler in fixed volume configuration allows purging of the sample outlet of the valve to eliminate dead volume in addition to a fixed sample volume. The jet purge adapter has two flow paths. The first flow path allows the product to flow into the sample bottle and the second flow path enables the jet purge adapter to be purged with an inert gas. See the Video.
DPJ Fixed Volume Configuration With Cooling Jacket (C3) - The ability to provide a jet purge adapter to a piston type sampling valve ensures optimal retrieval of a representative, contamination free sample. The DPJ type sampler in fixed volume configuration with cooling/ heating jacket allows purging of the sample outlet of the valve to eliminate dead volume in addition to a fixed sample volume at the required temperature. A separate cooler/heater is not necessary. The jet purge adapter has two flow paths. The first flow path allows the product to flow into the sample bottle and the second flow path enables the jet purge adapter to be purged with an inert gas. See the Video.
DPJ Solvent Purge Configuration (C4) - Being able to provide a jet purge adapter to a piston type sampling valve, ensures optimal retrieval of a representative, contamination free sample of high viscosity liquids. The DPJ type sampler allows purging of the sample valve outlet thus eliminating dead volume. In solvent purge configuration, the system allows for purging with a solvent or with nitrogen. See the Video.

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

DPT In Line, On/Off Configuration (H1) - The ability to install the sampler directly in the process line ensures optimal retrieval of a representative, contamination free sample. The DPT type of sampler in on/off configuration allows the product to flow directly into the sampler via an in line sample valve. See the Video.
DPT In Line, Continuous Needle Purge Configuration (H2) - The ability to install the sampler directly in the process line ensures optimal retrieval of a representative, contamination free sample. The DPT type of sampler in continuous needle purge configuration allows the product to flow directly into the sampler via an in line sample valve and to purge the needle assembly continuously before and after sampling. See the Video.

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

S23 With Threaded Connections (D1) - The ability to purge the sample point ensures optimal retrieval of a representative, contamination free sample. The S23 type sampler provides a system purge and needle purge in addition to a fixed sample volume. The unique design offers a one handle operation by multiple valves, allowing for sampling independent of the process conditions. These features provide sample accuracy and safety . See the Video.
S23 With Welded Connections (D1) - The ability to purge the sample point ensures optimal retrieval of a representative, contamination free sample. The S23 type sampler provides a system purge and needle purge in addition to a fixed sample volume. The unique design offers a one handle operation by multiple valves, allowing for sampling independent of the process conditions. See the Video.
S23 Continuous Needle Purge Configuration (D2) - The ability to purge the sample point ensures optimal retrieval of a representative, contamination free sample. The S23 type sampler in continuous needle purge configuration provides a system purge and continuous needle purge in addition to a fixed sample volume. The unique design offers a one handle operation by multiple valves, allowing for sampling independent of the process conditions. These features provide sample accuracy and safety. See the Video.
S23 With Cooling/Heating Jacket S23 (D3) - The ability to purge the sample point ensures optimal retrieval of a representative, contamination free sample. The S23 type sampler with cooling/heating jacket provides a system purge and a fixed sample volume at the required temperature. A separate cooler/heater is therefore not necessary. The unique design offers a one handle operation by multiple valves, allowing for sampling independent of the process conditions. These features provide sample accuracy and safety . See the Video.
S23 Third Coupled Valve Configuration (D4) - The ability to purge the sample point ensures optimal retrieval of a representative, contamination free sample. The S23 type sampler with third coupled valve configuration provides a system purge and positive vent line shut off in addition to a fixed sample volume. The unique design offers a one-handle operation by multiple valves, allowing for sampling independent of the process conditions. These features provide sample accuracy and safety. See the Video.
S23 High Vapour Phase Configuration (D5) - The ability to purge the sample point ensures optimal retrieval of a representative, contamination free sample. The S23 type sampler in high vapour phase configuration provides a system purge and positive vent line shut off in addition to a fixed sample volume for high vapour phase products. The unique design offers a one-handle operation by multiple valves, allowing for sampling independent of the process conditions. These features provide sample accuracy and safety . See the Video .
S23 High Temperature Configuration (D6) - The ability to purge the sample point ensures optimal retrieval of a representative, contamination free sample. The S23 type sampler configuration special for high temperature provides a system purge and a fixed sample volume at the required temperature. A separate cooler is therefore not necessary. The unique design offers a one-handle operation by multiple valves, allowing for sampling independent of the process conditions. These features provide sample accuracy and safety. See the Video.
S23 No Purge Configuration (D7) - The ability to purge the sample point ensures optimal retrieval of a representative, contamination free sample. The S23 type sampler provides a system purge in addition to a fixed sample volume. No vent connection is needed. The vent is connected to the top valve. This way a loop is created in order to fill the bottle by means of gravity. The unique design offers a one handle operation by multiple valves, allowing for sampling independent of the process conditions. These features provide sample accuracy and safety. See the Video.
S23 No Purge Configuration With Cooling/Heating Jacket (D8) - The ability to purge the sample point ensures optimal retrieval of a representative, contamination free sample. The S23 type sampler with cooling/heating jacket provides a system purge and a fixed sample volume at the required temperature. A separate cooler/heater is therefore not necessary. No vent connection is needed. The vent is connected to the top valve. This way a loop is created in order to fill the bottle by means of gravity. The unique design offers a one handle operation by multiple valves, allowing for sampling independent of the process conditions. These features provide sample accuracy and safety. See the Video.

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 Back Purge Configuration, With Vacuum Connection (E1) - The ability to create an under pressure in the sample bottle by a connection to a vacuum source ensures optimal retrieval of a representative, contamination free sample from processes at vacuum conditions or atmospheric pressure. The S32 type of sampler in back purge configuration allows a gas to purge the sampler and process connection prior to sampling ensuring a fresh sample. All S32 type of samplers offer a one handle operation by multiple valves. See the Video.
S32 Back And Needle Purge Configuration, With Vacuum Connection (E2) - The ability to create an under pressure in the sample bottle by connection to a vacuum source ensures optimal retrieval of a representative, contamination free sample from processes at vacuum conditions or atmospheric pressure. The S32 type of sampler in back & needle purge configuration allows a gas to purge the sampler and process connection prior to sampling ensuring a fresh sample and allows purging through the needle assembly. All S32 type of samplers offer a one-handle operation by multiple valves. See the Video.
S32 Back Purge Configuration, With Venturi Unit (E3) - The ability to create a vacuum in the sample bottle by a venturi unit ensures optimal retrieval of a representative, contamination free sample from processes at vacuum conditions or atmospheric pressure. The S32 type of sampler in back purge configuration allows a gas to purge the sampler and process connection prior to sampling ensuring a fresh sample. All S32 type of samplers offer a one-handle operation by multiple valves. See the Video.
S32 Back And Needle Purge Configuration, With Venturi Unit (E4) - The ability to create an under pressure in the sample bottle by a venturi unit ensures optimal retrieval of a representative, contamination free sample from processes at vacuum conditions or atmospheric pressure. The S32 type of sampler in back & needle purge configuration allows a gas to purge the sampler and process connection prior to sampling ensuring a fresh sample and allows purging through the needle assembly. All S32 type of samplers offer a one-handle operation by multiple valves. See the Video.
S32 Fixed Volume Configuration (E5) - The ability to purge the sample point ensures optimal retrieval of a representative, contamination free sample. The S32 type sampler provides a system purge and needle purge in addition to a fixed sample. The unique design offers a one handle operation by multiple valves, allowing for sampling independent of the process conditions. These features provide sample accuracy and safety. See the Video.
S32 Overflow Vacuum Configuration (E6) - The ability to create a vacuum in the sample chamber by a connection to a vacuum source ensures optimal retrieval of a representative, contamination free sample. The S32 type sampler in overflow vacuum configuration provides a system purge to an overflow chamber and needle purge in addition to a fixed sample. The unique design offers a user-friendly operation by multiple valves, allowing for sampling reactors and vessels at atmospheric or vacuum conditions. See the Video.
S32 Overflow Vacuum Configuration, With Venturi Unit (E7) - The ability to purge the sample point ensures optimal retrieval of a representative, contamination free sample. The S32 type sampler in overflow vacuum configuration provides a system purge to an overflow chamber and needle purge in addition to a fixed sample. The unique design offers a one-handle operation by multiple valves, allowing for sampling reactors and vessels at atmospheric or vacuum conditions. See the Video.

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.

DOPAK^® Sampler Type DPVS

DOPAK^® Sampler Type DPGM

DOPAK^® 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

Gas Process Samplers

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

S32-G System Purge Configuratio n (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 Dopak^® Sampling Systems - This link provides a list of typical applications for Dopak® Sampling Systems in Refining, Petro-Chemical, Pharmaceutical, Pulp / Paper and Power Generation.