Sunday, December 9, 2018

Thermal Mass Flow Meters in Oil & Gas Applications


Fox Thermal Instruments manufacturers highly accurate and repeatable thermal mass flow meters for the oil and gas industry.

The model FT4X was designed for use at oil and gas well sites .

The standard data logger will make record-keeping easy for accuracy compliance with regulations like BLM 3175.

The model FT4X will make reporting for gas lease royalties and allocation easy too.

The model FT4A was also designed for use at oil and gas well sites. The gas Select-X feature is a revolutionary new feature that allows the user to have a meter capable of measuring more than 10 different gases accurately.

Custom flare gas or vent gas mixes can be programmed specifically for your application.

Fox model FT3 is an award-winning and rugged their own mass flow meter that is Quad-O compliant for flares or combustors, and like our other meters, has extensive agency approvals.

For more information on Fox Thermal products, visit:

Power Specialties, Inc.
https://powerspecialties.com
(816) 353-6550

Monday, December 3, 2018

Schutte and Koerting Product Application Selection Chart

Schutte and Koerting
Schutte and Koerting manufactures steam jet vacuum systems, steam jet heaters, exhausters and compressors, scrubber systems, desuperheaters, thermo compressors, eductors and syphons, ejectors, and valves.

The following is a handy chart to assist in selecting Schutte and Koerting product according to application. While this chart is helpful to narrow down the right product for the job, it is highly recommended you contact a Schutte and Koerting application expert to confirm your selection meets all technical, performance, and safety requirements.

Application Selection Chart

Process Applications Motive
Fluid
Products Technical Info
Move/
pump
liquids or solids
Emptying a tank or pit
Pumping juices or other edibles in a canning plant
Supplying heated water to jackets of stills
Pumping waste liquids containing solids
Cleaning sludge from tanks and pits
Moving spent filter clay
Heating and moving slurries
Sampling operations
Moving dry solids using air
Steam Jet Syphons
Steam Jet Heaters
Steam Jet Ejectors
Bulletin 2-A
Bulletin 3-A
Bulletin 5E-H
Air/Gas Jet Syphons
Steam Jet Exhausters
Solid Handling Eductors
Bulletin 2-A
Bulletin 4-E
Bulletin 2-SH
Liquid Liquid Jet Eductors
Water Jet Exhausters
Solid Handling Eductors
Bulletin 2-M
Bulletin 4-P
Bulletin 2-SH-LQ
Move/
pump
air or
gases
Agitating fermentation tanks and drying drums
Priming centrifugal pumps
Exhausting air from vacuum pans and evaporators
Pressurizing vats
Handling corrosive gases
Aerating/oxygenating wastewater
Circulating or recirculating steam
Boosting flash steam from a condensate receiver
Compressing waste steam
Convey waste gases to flare
Exhaust sulfur pits
Steam Jet Compressors
Steam Jet Exhausters
Steam Jet Ejectors
Bulletin 4-F
Bulletin 4-E
Bulletin 5E-H
Air/Gas Steam Jet Ejectors
Steam Jet Exhausters
Jet Compressors
Bulletin 5E-H
Bulletin 4-E
Bulletin 4-F
Liquid Liquid Jet Eductors
Water Jet Exhausters
Gas Scrubbers
Bulletin 2-M
Bulletin 4-P
Bulletin 7-S
Produce
a vacuum
Filtration, distillation
Impregnation, absorption
Drying, degassing
Dehydrating, evacuating
Cooking, evaporating
Vacuum transfer, chilling
Removing condensate under vacuum
Exhausting air from vacuum pans and evaporators
Priming centrifugal pumps
Steam Steam Jet Exhausters
Steam Jet Ejectors
Bulletin 4-E
Bulletin 5E-H
Air/Gas Steam Jet Exhausters
Steam Jet Ejectors
Bulletin 4-E
Bulletin 5E-H
Liquid Liquid Jet Eductors
Water Jet Exhausters
Bulletin 2-M
Bulletin 4-P
Mix 2 materials Mixing chemicals in desired proportions
Introducing water-treating compound into boiler feedwater
Mixing powdered dye with gasoline
Blending oils in a tank
Scrubbing gases
Mixing by-product gases for furnace firing
Mixing propane, butane, & natural gas
Compressing waste steam to a usable process pressure
Circulating steam in dryers
Steam Steam Jet Heaters
Steam Jet Exhausters
Bulletin 3-A
Bulletin 4-E
Air/Gas Jet Compressors Bulletin 4-F
Liquid Gas Scrubbers
Liquid Jet Eductors
Water Jet Exhausters
Bulletin 7-S
Bulletin 2-M
Bulletin 4-P
Heat a liquid Submerged heating
Heating and circulating water
Preventing freezing of water in gas holder tanks, cups
Cooking grain, mash, or similar mater.
Supplying heated water to jackets of stills and graining bowls
Steam Steam Jet Heaters
High Capacity Heaters
Jet Syphons
Bulletin 3-A
Bulletin 3A-HC
Bulletin 2-A
Scrub
a gas
Removing SO2, SO3, CI2, SiF4, HCI, NH3, HF, H2S, HNO3, H2SO4, COCI2, HCN, SOCI2, HBr, Br2, F2, formaldehyde, particulates, reduced sulfur compounds, and many other compounds Liquid Gas Scrubbers Bulletin 7-S
Reduce steam
temp.
Power plant requirements for desuperheated steam
Improve heat transfer of surface-type heat exchangers
Reduce and control superheated steam temperatures that harm
product
Control superheat temperatures at partial loads
Maintain balance between process steam and power requirements
Steam Steam Desuperheaters Bulletin 6-D

Thursday, November 29, 2018

Fox Thermal Model FT4X Flow Meter Features

Fox Thermal Model FT4X
The Fox Thermal Model FT4X, is the newest Thermal Gas Mass Flow Meter offered from Fox Thermal.

The Model FT4X measures gas flow rate in standard units (MSCFD, SCFM, NM³/hr, LBS/HR, KG/HR & many more) without the need for temperature and pressure compensation.

A free software tool – FT4X View™ - is available for the Model FT4X that allows the user to connect to and configure the FT4X using a PC or laptop.

The complete FT4X Flow Meter Features can be downloaded here. Alternatively, you can review the embedded document below.

Power Specialties, Inc.
https://powerspecialties.com
(816) 353-6550

Friday, November 16, 2018

Process Control eBook Available for Download - The Road to Successful Plant Modernization

Road to Successful Plant ModernizationThis downloadable eBook, courtesy of Yokogawa, looks into some of the most significant challenges related to plant modernization, and is meant to provide support for a structured process that helps properly scope, execute, and justify re-instrumentation and control improvement projects. This eBook focuses on basic process control, safety systems and instrumentation for plants in the U.S.


TABLE OF CONTENTS:

  • MODERNIZATION & CONTROL IMPROVEMENT
  • THE ROAD TO SUCCESSFUL MODERNIZATION
  • DRIVERS FOR MODERNIZATION
    • Obsolescence for Infrastructure
    • Safety, Industry Regulations & Compliance
    • Operational Excellence
      • Risk of Aging of the Workforce
      • Advanced Process Control
      • Cyber Security
  • SUCCESSFUL MODERNIZATION
    • Field Survey
    • Main Automation Contractor
    • System Architecture
    • Scope Determination
      • System I/O
      • Re-use of Existing Infrastructure
      • System & Security Requirements
      • Advanced Process Control
      • Operator Effectiveness
    • Different Scenarios: Upgrades, Migrations, and Replacements
  • RECOMMENDATIONS

For more information, contact Power Specialties by calling (816) 353-6550 or by visiting https://powerspecialties.com.

Wednesday, October 31, 2018

Weight-based Level Control

Weight-based level instruments sense process level in a vessel by directly measuring the weight of the vessel. If the vessel’s empty weight (tare weight) is known, process weight becomes a simple calculation of total weight minus tare weight. Obviously, weight-based level sensors can measure both liquid and solid materials, and they have the beneļ¬t of providing inherently linear mass storage measurement. Load cells (strain gauges bonded to a steel element of precisely known modulus) are typically the primary sensing element of choice for detecting vessel weight. As the vessel’s weight changes, the load cells compress or relax on a microscopic scale, causing the strain gauges inside to change resistance. These small changes in electrical resistance become a direct indication of vessel weight.

The following photograph shows three bins used to store powdered milk, each one supported by pillars equipped with load cells near their bases:


When multiple load cells are used to measure the weight of a storage vessel, the signals from all load cell units must be added together (“summed”) to produce a signal representative of the vessel’s total weight. Simply measuring the weight at one suspension point is insufficient, because one can never be sure the vessel’s weight is distributed equally amongst all the supports.

Weight-based measurements are often employed where the true mass of a quantity must be ascertained, rather than the level. So long as the material’s density is a known constant, the relationship between weight and level for a vessel of constant cross-sectional area will be linear and predictable. Constant density is not always the case, especially for solid materials, and so weight-based inference of vessel level may be problematic.

In applications where batch mass is more important than height (level), weight-based measurement is often the preferred method for portioning batches. You will find weight-based portion measurements used frequently in the food processing industries (e.g. consistently filling bags and boxes with product), and also for custody transfer of certain materials (e.g. coal and metal ore).

One very important caveat for weight-based level instruments is to isolate the vessel from any external mechanical stresses generated by pipes or machinery. The following illustration shows a typical installation for a weight-based measurement system, where all pipes attaching to the vessel do so through flexible couplings, and the weight of the pipes themselves is borne by outside structures through pipe hangers:


Stress relief is very important because any forces acting upon the storage vessel will be interpreted by the load cells as more or less material stored in the vessel. The only way to ensure that the load cell’s measurement is a direct indication of material held inside the vessel is to ensure that no other forces act upon the vessel except the gravitational weight of the material.

A similar concern for weight-based batch measurement is vibration produced by machinery surrounding (or on) the vessel. Vibration is nothing more than oscillatory acceleration, and the acceleration of any mass produces a reaction force (F = ma). Any vessel suspended by weight-sensing elements such as load cells will induce oscillating forces on those load cells if shaken by vibration. This concern in particular makes it quite difficult to install and operate agitators or other rotating machinery on a weighed vessel.

An interesting problem associated with load cell measurement of vessel weight arises if there are ever electric currents traveling through the load cell(s). This is not a normal state of affairs, but it can happen if maintenance workers incorrectly attach arc welding equipment to the support structure of the vessel, or if certain electrical equipment mounted on the vessel such as lights or motors develop ground faults. The electronic amplifier circuits interpreting a load cell’s resistance will detect voltage drops created by such currents, interpreting them as changes in load cell resistance and therefore as changes in material level. Sufficiently large currents may even cause permanent damage to load cells, as is often the case when the currents in question are generated by arc welding equipment.

A variation on this theme is the so-called hydraulic load cell which is a piston-and-cylinder mechanism designed to translate vessel weight directly into hydraulic (liquid) pressure. A normal pressure transmitter then measures the pressure developed by the load cell and reports it as material weight stored in the vessel. Hydraulic load cells completely bypass the electrical problems associated with resistive load cells, but are more difficult to network for the calculation of total weight (using multiple cells to measure the weight of a large vessel).

Power Specialties can assist you with all of your process weighing requirements. Visit their website at https://powerspecialties.com or call (816) 353-6550.



Reprinted from "Lessons In Industrial Instrumentation" by Tony R. Kuphaldt – under the terms and conditions of the Creative Commons Attribution 4.0 International Public License.

Monday, October 29, 2018

Calibration of the MSA Chillgard® Refrigerant Leak Monitor

Refrigerant Leak Detector

The MSA Chillgard® 5000 Refrigerant Leak Detector provides continuous, real-time monitoring down to 1ppm. The Chillgard® 5000 Refrigerant Leak Monitor provides the earliest level of detection of costly refrigerant gas leaks in mechanical equipment rooms.

Calibrating the Chillgard® 5000 is easy. You can initiate a calibration with just the touch of a button on the dashboard. But before you begin calibrating, make sure you have all the necessary tools: demand flow type regulator; zero air scrubber; target gas or synthetic calibration cylinder. To begin, select the calibration button from the dashboard and pull out the calibration pen. The display will instruct you to insert the zero scrubber into the calibration port. Once inserted push the start button to perform the zero calibration. The unit will begin zeroing, and will display its progress. Once you've completed the zero calibration you'll see a calibration summary, then you'll be prompted to perform a span calibration. When instructed remove the zero scrubber. To begin the span calibration, select the target gas. Then confirm your cylinder concentration. If you prefer to use a synthetic gas, check the box on the screen. Apply cow gas to the calibration port, and then press start. The span calibration process will begin. Once the span calibration has finished, remove the cow gas, reinsert the calibration pen, and set a calibration reminder. The unit will return to the dashboard view. You can review a calibration summary, and the event log stores a history of past calibrations. Easy calibration means less maintenance and more uptime.

For more information, contact Power Specialties by visiting https://powerspecialties.com or by calling (816) 353-6550.