Schneider Electric Foxboro Measurement and Control Product Catalog

Schneider Electric / Foxboro provides customers a complete solution - from instruments in the field to the control room - to enable customers to optimize their assets-people, equipment, plant. With a history of innovation, Foxboro Field Devices provides solutions across a wide range of industries, including Energy, Oil, Gas & Refining, Renewable Fuels, Nutrition And Life Sciences, Process Automation, Water & Wastewater.

Foxboro / Schneider Electric range of products in Measurement and Instrumentation include:

• Flow
• Level
• Pressure
• Process Liquid Analytical
• Temperature
• Control
• Data Acquisition & Configurator
• Pneumatic
• Valve Positioners
• Accutech

Visit this page on the Swanson Flo website to download your full PDF version.

You can easily specify many instruments and accessories described in this catalog. Sections covering our most popular items include all the technical data you need to know for most applications. To specify the appropriate item, simply follow the step-by-step procedure at the end of each description. Please feel free to contact Swanson Flo for help.

New Product Alert: The Jordan Mark 75PTP Sliding Gate Control Valve

Jordan Mark 75PTP

The Jordan Mark 75PTP is a Mark 75 wafer style control valve with an 80mm (1" - 2") Stainless Steel Piston Actuator. The Gemu cPOS Smart Positioner is standard and required for control applications. For on/off service, the valve may supplied without a positioner. JVCV Should be used for sizing selection.

The Mark 75PTP provides great capacity in a com-pact wafer style body. A 2" Mark 75PTP provides 72 Cv (62 Kv). (Refer to Cv Capacity Charts for information concerning all line sizes).

The Mark 75PTP features a 'T' slot design connection to the disc. This connection allows for quick and easy reversing of functions. Instead of having to go into the actuator to change action, all that is needed in a Mark 75PTP is to rotate the seats 180°. With this simple rotation, the valve can go from reverse acting to direct acting (or vice versa).The stroke length of the Mark 75PTP is a slightly longer stroke than standard sliding gate valves. This longer stroke enables better turndown. Combined with the capacity of the Mark 75PTP, the in-creased turndown makes for a great control valve.

Jordan MK75PTP Sliding Gate Control Valve from Swanson Flo

Limitorque Actuator Product Range

Limitorque has 90 years experience providing electric actuators to safely operate automated valves that protect people and property. The products that Limitorque offer are:

• Intrusive Multi-Turn Actuators - L120 and SMB Series
• Non-Intrusive Multi-Turn Actuators - MX Series
• Non-Intrusive Quarter-Turn Electric Actuators - QX Series
• Gas Powered Actuators - LDG Direct Gas Actuator
• Hydraulic Actuators - LHS and LHH Series
• Pneumatic Actuators - LPS and LPC Series
• Multi-Turn Gearboxes - V Series and SR Series
• Quarter-Turn Gearboxes - WG Series and HBC Series

For more information on Limitorque watch the video below and visit https://www.swansonflo.com or call 800-288-7926.

Understanding Linear, Equal Percentage, and Quick Open Control Valve Flow Curves

Flowserve Valtek Control Valve

Flow characteristics, the relationship between flow coefficient and valve stroke, has been a subject of considerable debate. Many valve types, such as butterfly, eccentric disk and ball valves, have an inherent characteristic which cannot be changed (except with characterizable positioner cams). Flow characteristics of globe valves can be determined by the shape of the plug head.

The three most common types of flow characteristics are quick opening, equal percentage and linear. The figure below shows the ideal characteristic curve for each. These characteristics can be approximated by contouring the plug. However, inasmuch as there are body effects and other uncontrollable factors, plus the need for maximizing the flow capacity for a particular valve, the real curves often deviate considerably from these ideals. When a constant pressure drop is maintained across the valve, the characteristic of the valve alone controls the flow; this characteristic is referred to as the “inherent flow characteristic.” “Installed characteristics” include both the valve and pipeline effects. The difference can best be understood by examining an entire system.

Equal Percentage

Control valve flow curves.

Equal percentage is the characteristic most commonly used in process control. The change in flow per unit of valve stroke is directly proportional to the flow occurring just before the change is made. While the flow characteristic of the valve itself may be equal percentage, most control loops will produce an installed characteristic approaching linear when the overall system pressure drop is large relative to that across the valve.

Linear

An inherently linear characteristic produces equal changes in flow per unit of valve stroke regardless of plug position. Linear plugs are used on those systems where the valve pressure drop is a major portion of the total system pressure drop.

Quick Open

Quick open plugs are used for on-off applications designed to produce maximum flow quickly.

This information provided courtesy of Flowserve Valtek. Share your control valve requirements and challenges with a valve specialist, combining your own process knowledge and experience with their product application expertise to develop effective solutions.

Instruction Manual for Bronkhorst Mass Flow Pressure Meters and Controllers for Gases and Liquids

Bronkhorst MFC

Bronkhorst offers the widest product range of thermal mass flow meters and controllers on the market. Numerous styles of both standard and specialized instruments can be offered for applications in laboratory, industrial and hazardous areas. Also, Bronkhorst specializes in (ultra) low flow Coriolis meters and controllers for liquids and gases.

For your convenience, below is the instruction manual for mass flow meters and controllers.


Contact Swanson Flo at 800-288-7926 or visit http://www.swansonflo.com for more information on Bronkhorst products.

Instruction Manual for Bronkhorst Mass Flow Pressure Meters and Controllers for Gases and Liquids from Swanson Flo

Solenoid Valves - How They Work

Solenoid valve, 2-Way, Brass
(ASCO)

Solenoid valves are used throughout many commercial, municipal, industrial, and even residential settings to manage fluid flow. What we refer to as a solenoid valve is an integrated valve and actuator. The actuator, or solenoid, operates via electric current flowing through its helix shaped coil. Energizing the coil with a control signal produces a magnetic field, which then actuates the valve mechanism. Depending on the port configuration of the valve, solenoid valves can either function as two way flow controllers or as diverters in a process system, If the valve contains two ports, then the valve is an on/off valve. If the valve contains three or more ports, then the valve directs the flow of a fluid in the process system. Thanks to their flexibility, reliability, and need for only a small amount of control power, solenoid valves are a frequently used fluid process control device.

The solenoid used in a solenoid valve functions as a converter for electrical energy, using the supplied electrical energy to produce mechanical energy. Metal or elastomeric seals on solenoid valves can be coupled with electrical interfaces, allowing for relatively easy operation by the process controller. The valves typically use a metal plug to cover up a hole, and when pressure from the process fluid is applied to the valve, the pressure difference causes the solenoid valve to be in its normal position. Instead of referring to two directions of flow, the two-way solenoid valves are named two-way because these valves contain two valve ports which the fluid uses to travel.

Three way valves, similar to the name of the two-way valve, have three fluid ports. In an application example, these ports could correspond to pressure, exhaust, and cylinder. In a pneumatic system, these would be used for compressed air supply, vent, and the actuating mechanism. Regardless of the application, the valve function is the same, connecting the inlet port to one of two outlet ports. The selection array of solenoid valves for commercial and industrial use is vast, with variants suitable for a wide range of media, pressure, temperature, and operation sequence.

Pneumatic and hydraulic systems are typical applications for solenoid valves, as are processes such HVAC, where solenoid valves help control liquid refrigerant, as well as suction and hot gas lines. Solenoid valves are a popular fluid flow control options used in processing industries.

Share your fluid control requirements and challenges with application experts, combining your own process knowledge and experience with their product application expertise to develop effective solutions.

Watch the video below for more on how solenoid valves work.

Understanding the Relationship between Hydrostatic Pressure, Density and Level

The pressure exerted by a fluid material in a vessel is directly proportional to its height multiplied by its density.

Hydrostatic pressure, or head pressure, is the force produced by a column of material. As the height of the material changes, there is proportional change in pressure. To calculate hydrostatic pressure, the density of the material is multiplied by the height of the column. The level of fluid in a column can be determined by dividing the pressure value by the density of the material.

To find pressure in a column of water, a gauge placed at the bottom of the vessel. With the water having a density of 0.0361 pounds per cubic inch, the level of the fluid is calculated by dividing the head pressure by the density of the fluid.

An example to determine the level measurement of a column of water that is 2 feet tall in diameter of 0.5 feet is solved by the following steps. The first step is measuring the weight of the vessel. Next measure the weight of the vessel with fluid. The weight of the fluid is determined by subtracting the weight of the vessel from the weight of the vessel with fluid. The volume of the fluid is then derived by dividing the fluid weight by the density of the fluid. The level of the fluid is finally calculated by dividing the volume of the fluid by the surface area.

Hydrostatic pressure can only be calculated from an open container. Within a closed vessel, or pressurized vessel, the vapor space above the column of material adds pressure, and results in inaccurate calculated values. The vessel pressure can be compensated for by using a differential pressure transmitter. This device has a high pressure side input and a low pressure side input. The high-pressure input is connected to the bottom of the tank to measure hydrostatic pressure. The low-pressure input of the differential pressure transducer is connected to the vapor space pressure. The transducer subtracts the vapor pressure from the high-pressure. Resulting is a value that represents the hydrostatic head proportional to the liquid level.