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Pressure Calibrating Transmitters in Potentially Explosive Atmospheres

pressure-calibrating-transmitters-in-potentially-explosive-atmospheres

It is always a challenging feat to perform operations in a potentially dangerous environment. And even with the greatest test tools that adhere to its user’s safety, you cannot be completely complacent. Pressure calibrating can pose a challenging task when done in a potentially explosive atmosphere. Therefore, when faced with such an assignment, make sure that you have undergone proper training and are equipped with the right equipment.

A deeper understanding of “intrinsically safe”

Primarily, to conduct pressure calibration in a high-risk atmosphere, you need a tool that is deemed “intrinsically safe”. To give a simple explanation, if your tool is intrinsically safe, it means that it is designed to prevent the release of sufficient energy by either thermal or electrical means. Doing so will cause the ignition of flammable material such as gas or dust particles.

In general, intrinsically safe standards don’t just apply to one device or a certain operation, but it applies to all tools and devices that are regularly exposed to potential explosive sources. Here are some of them…

  • Electrical sparks
  • Electrical arcs
  • Flames
  • Hot surfaces
  • Static electricity
  • Electromagnetic radiation
  • Chemical reactions
  • Mechanical impact
  • Mechanical friction
  • Compression ignition
  • Acoustic energy
  • Ionizing radiation

If you are a technician or maintenance man working in industries such as mining, petrochemical, pharmaceutical, or something that exposes you to explosive gases then make sure that your devices are deemed intrinsically safe. Remember, that you are the best asset on the field, so do not take any chances of proceeding with your operation without safe tools to use.

How to pressure calibrate a transmitter in a risky environment.

Now you know all about the device’s safety, let us move on to pressure calibrating a transmitter. It is already a given that you’ll probably tread on eggshells the entire time and try not to provoke the explosive substances that are surrounding you. However, that is not all you need to worry about. The most important thing that you need to do is to perform the procedure carefully and with precision.

Here’s how you can do it according to an official Fluke source:

  1. Depressurize and isolate the transmitter. If opening the transmitter exposes voltages beyond the Intrinsic Safe (I.S.) rating use a continuous monitoring gas detector to monitor for explosive gases.
  2. Plumb the transmitter to the 1/8 inch NPT pressure port of the 718Ex. Connect the test leads per the figure above.
  3. Turn the calibrator on. Vent the calibrator and press zero to zero the pressure displayed. Close the vent control.
  4. Press the UNITS key until PSI shows in the display.
  5. With the 718Ex’s bleed valve open to the atmosphere, press the ZERO key. Close the bleed valve. Set the pressure/vacuum valve to +, for positive pressure.
  6. Use the hand pump to apply 3 psi to the transmitter. Partial pump strokes will apply small increments of pressure. Use the fine-adjust knob to get close to 3.00 psi.
  7. Press the HOLD key and record the psi and mA readings. Press the HOLD key to resume reading.
  8. Calculate and record the error, using: Error = ([(i-4)/16] – [(P-3)/12]) * 100 where Error is in % of span, i is your measured current in mA, and P is your measured pressure in psi.
  9. Repeat steps 5 through 7 at mid-range, around 9 psi, to check linearity at mid-span.
  10. Repeat steps 5 through 7, now at 15 psi, for a check at 100 % of span.
Photo Source: https://us.flukecal.com/literature/articles-and-education/pressure-calibration/application-notes/calibrating-pressure-transm

Purchase from an authentic source!

Hey, you made it to the bottom! Are you currently looking for the best-performing test tools in the market to run daily maintenance checks on your machines? You are in luck cause Presidium PH is an authorized distributor of Fluke test tools in the Philippines.

If you want to know more about Fluke tools and their functions, visit our website for more info! This is a one-stop shop for the best test tools within Metro Manila.

Visit our website https://presidium.ph/shop/?wlfilter=1&product_cat=fluke-calibration to know more about our fluke calibration products.

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The Importance Of Electrical Grounding

the-importance-of-electrical-grounding

What is electrical grounding?

Indeed, people have made notable advancements in the electricity department and electrical grounding is one of its big improvements. Technically, electrical grounding is storing electricity on the ground to prevent fatal risks from occurring. It is the process of connecting electrical panels, electrical motors, installations, electrical controls, etc, to the earth. As a result, this will make the environment safer for people since it reduces dangers from civilians and equipment.

What happens if I do not do electrical grounding?

You will be exposed to fatal shocks if your currents are not grounded. So, there are three things about wiring that you need to know about. Ideally, there is an active wire, a neutral wire, and a grounding wire. So, let us look at each one of them closely.

An active wire is the one that supplies power to the wires. Meanwhile, the neutral wire is the one that carries the current back. Lastly, the grounding wire is the one that can be attached to outlets as well as other electrical devices to be connected to the ground at the breaker box.

Originally, the grounding wire is only an additional feature. However, regardless of their “newness” grounding wires holds the most advantageous feature for people since it gives them complete protection from fatal shocks. The grounding wires work for electrical current to safely return to the ground.

As a result, if a short circuit did occur the current would flow through the ground wire causing a blown fuse or tripped circuit breaker. Better a blown fuse or a tripped circuit breaker than a fatal shock, right?

Benefits of proper grounding

Let us face it. Grounding is also one of the most overlooked aspects when it comes to electrical wiring. Nevertheless, according to Platinum Electricians, grounding your wires is an ideal choice to provide protection against possible shocks. They explained. “Grounding your electrical system is a smart and effortless way to make it a whole lot safer, as well as to protect against the very real possibility of having to deal with fluctuations in power supply.”

Just imagine if an electrical error occurs such as lightning strikes or power surges. When you have no electrical grounding, this will cause metal components to function as conductive surfaces. Therefore, these surfaces become electrically energized. And when people touch these surfaces, they will get shocked in the process.

Platinum Electricians further explained by saying, “If you want to safeguard all of your important assets, whether at home or at the office, as well as a lookout for the health and safety of everyone around you, find out if your electrical system is grounded”.”

Advantages of proper grounding according to Conserve Online:

  • Eliminates shock hazard
  • Protects equipment from voltage
  • Prevents electrical fires
  • Reduces equipment repair cost and downtime
  • Lowers levels of electrical noise (fluctuations in an electrical signal)

Why do you need electrical grounding

Not only does it bring notable safety benefits for people and their equipment, but it also brings a lot to the table overall. So, if you do not want your electricity grounded, you might want to think again. Take note of these four significant reasons why you should.

  • Electrical grounding protects against electrical overloads.
  • It stabilizes voltage levels
  • Earth conducts with least resistance
  • It prevents severe damage and death

Resolve these failures using Fluke Tools!

Hey, you made it to the bottom! Are you currently looking for the best-performing test tools in the market to run daily maintenance checks on your machines? You are in luck cause Presidium PH is an authorized distributor of Fluke test tools in the Philippines. Prevent these faults from penetrating your machine by using the best test tools there are!

If you want to know more about Fluke tools and their functions, visit our website for more info! This is a one-stop shop for the best test tools within Metro Manila.

List of Fluke models: https://presidium.ph/earth-ground-testers/

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Quick Run Through of Power Quality Symptoms and What’s Causing Them

quick-run-through-of-power-quality-symptoms-and-whats-causing-them-presidium-ph

Are you experiencing power-related symptoms with your machines, panels, or electrical wiring? Although it is a given fact that Fluke tools can undoubtedly solve these issues with a simple click of buttons, it is also a good practice for electricians and caretakers to know what is causing them. Remember that action prevention is always better than relying on tools alone. Therefore, knowing the causes of power quality symptoms also takes a substantial chunk regarding understanding the process for it to go as smoothly as possible.

Importance of power quality

When we touch upon the topic of power quality, it relates to things that consume power. And for electronics and machines to function properly, they need a good consistent flow of voltage. Power quality is important because, in the modern world that we live in today, electricity and power are widely used and saturated in most businesses and households. Imagine what it would be like when your power is tripping or acting up. This will cause unwanted downtimes for businesses, and it will also cause pricey maintenance assistance.

Remember the famous quote “health is wealth”? It does not just apply to people’s health, but it also applies to electrical aspects as well. Keeping your power lines in their peak condition and maintaining their optimum power quality will be beneficial for your business and households overall.

Causes of poor power quality

If you are experiencing these issues with your lights or electricity in general, then it might be high time for you to contact someone to look at your powerlines. Take note that the causes of poor power quality can happen to any electrically powered thing when it is starting to age. According to ICAR, here are some of the possible causes of poor power quality…

Probable causes:

  • Power failures (Release switches, fuses blowing).
  • Breakdowns or malfunctions of machines.
  • Overheating of machines (transformers, motors, etc.) leads to reduced useful life.
  • Damage to sensitive equipment (computers, production line control systems, etc.).
  • Electronic communication interference.
  • Increased distribution system losses.
  • The need to oversize systems to cope with additional electric stress results in higher installation and operational costs.
  • Luminosity flickering

A quick run-through of power quality symptoms.

Let us not make things complicated. There are a lot of possible causes of why your electric machines or your panels are malfunctioning. Here, we are going to quickly run-down the most common ones that you will experience. We will state the issues, their symptoms, and their possible potential causes.

Dips and Sags

One of the most common occurrences of electrical or power-related issues is “dips and sags”. You will know it when it happens when you start experiencing dimming lights, computer lockups, equipment shutdown, systems shut down, and unexplained shutdowns in general.

One of the main causes of dips and sags are extreme weather conditions that can really shake up electrical lines and cable posts. In line with this, starting large loads, especially large inductive can also be a reason for electrical dips and sags.

Electrical Swells

You might want to watch out for electrical swells. You will know when your power lines are experiencing this when your power supplies are failing. Also, overvoltage shutdowns and alarms on variable frequency drives can be in the works when electrical swells take place. The potential causes for this are capacitor bank switching, sudden load decrease, or faulty single phase of three-phase systems.

Transients

One of the most dangerous causes of power quality symptom transient usually triggers arcing effects and flashovers that are very harmful to maintenance men and women when they are exposed to them. In line with this, it also triggers damaged insulations, computer lockups, and failed electronics.

To prevent this occurrence, try and watch out for these things that are causing them.

  • Lightning strikes
  • Switching of capacitors
  • Reenergizing systems after a power failure
  • Sudden stoppage of large equipment
  • Dirty or worn contactors

Harmonics

Its symptoms consist of overheated electrical functions. To prevent this, watch out for the overheating of your conductors, transformers, and inductive motors. These elements can cause damage to your harmonics. Also, like other causes of poor power quality, you may also experience unexplained shutdowns of your electronic equipment. But let us not forget about its potential causes.

Causes of harmonics:

  • Nonlinear loads such as switching power supplies
  • Converter sections of uninterruptible power supply (UPS), VFDs, and battery chargers
  • Welders
  • Arc furnaces

Power Interruptions

This is one of the most common faults that people experience when heavy rains or storms occur. technically, this entails a total power shutdown of appliances, lights, or anything that is powered by electricity. In simple terms, it is a momentary loss of utility power. Power interruptions may seem like a simple and common thing, but it is also a cause of unwanted downtimes that can affect a business’s productivity. Not to mention, some downtimes can be costly to some industries as well.

Resolve these failures using Fluke Tools!

Hey, you made it to the bottom! Are you currently looking for the best-performing test tools in the market to run daily maintenance checks on your machines? You are in luck cause Presidium PH is an authorized distributor of Fluke test tools in the Philippines. Prevent these faults from penetrating your machine by using the best test tools there are!

If you want to know more about Fluke tools and their functions, visit our website for more info! This is a one-stop-shop for the best test tools within Metro Manila.

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Electric Safety: 5 Preventive Practices to Keep You From Harm During Operations

electric-safety-5-preventive-practices-to-keep-you-from-harm-during-operation

Method with caution is the rule of thumb of most people who are working with electricity. Live wires or dead wires, one should never be complacent when testing or doing maintenance checks. Nevertheless, there will always be a certain pressure for workers to get the job done no matter what happens. And when certain pressures are breathing down your neck, you might have the tendency to miss a few electric safety steps.

However, missing a few safety steps shouldn’t be something to feel bad about. Actually, even professionals can sometimes make those mistakes. The bigger picture is your safety when you’re around electrical wires. So here are things that you should prevent doing when you’re around them.

Here are preventive practices you should keep in mind when testing electricity…

These are just quick reminders for people who are working closely with live wires (or dead ones) daily. Ignorance of simple things can sometimes be the main cause of a project’s destruction or an immediate trip to the emergency room. Therefore, it’s always a smart move to be very careful and attentive when doing electric testing. Here are some of the common mistakes you should watch out for.

Electric Safety: Working on live circuits

You should limit your exposure to live wires as much as possible. One of Fluke’s best features is its ability to take measurements from afar making its user well protected and away from danger. The best course of action is to de-energize the live wire or switch off the main power source. But then again, why should you vie away from electrical circuits when you have your full protective gear on? It’s because your PPE can only protect you to a certain extent. So, if you’re working with live circuits, better have full insulted tools together with your PPE.

Electric Safety: Refusing to upgrade test tools

You have to upgrade your test tools. We’re not saying you should purchase every time a new one comes out, but if the said tools are going to help you in doing the job better, then, why not right? Good tools are an investment especially if you’re planning on having a career in the electrical department.

Your tool might be working perfectly fine right now but can you still say the same 10 years after? No matter how good your test tool is, opting to purchase a more advanced tool that can keep you safer is always preferred. These advanced tools may be worth the investment than the old ones you have right now.

Electric Safety: Holding test tools with both hands

Actually, try not holding anything at all if it’s possible for you to do so. The goal of every operation is for you to limit your contact to any live wires or any tool that can bring you harm. So, if you must hold your tools when testing electricity, always do it with one hand. Doing so will lessen your exposure to harm if ever there are any unfavorable occurrences.

Nevertheless, the best option for you is to go hands-free (if the operation or the project itself allows it). You can try hanging your device somewhere while testing electricity. Some Fluke tools actually have this feature so that any worker can feel safer doing a ‘hands-free’ job.

Electric Safety: Replacing fuses with cheaper ones.

The fuses that you bought together with your digital multimeter are tested in regards to the CAT safety standards. Moreover, the one that is originally installed in your device can surely withstand any overload or faulty electric wiring. On the other hand, buying from another source might not level up to the original one. It’s always to be better off safe than sorry, so when replacing your digital multimeter’s fuses, buying from an original source is always the ideal choice.

Electric Safety: Don’t neglect your test leads.

One of the most important accessories you can have for your digital multimeters is your test leads. Remember, test leads don’t come in one form. There are a lot of other types that are better suited for the project you are working on. A word of advice, for further safety measures, try looking (or consider purchasing) test leads with finger guards, non-slip surfaces, shrouded input connectors, and those with double insulation.

Purchase from an authentic source!

Hey, you made it to the bottom! Are you currently looking for the best-performing test tools in the market to run daily maintenance checks on your machines? You’re in luck cause Presidium PH is an authorized distributor of Fluke test tools in the Philippines.

If you want to know more about Fluke tools and their functions, visit our website for more info! This is a one-stop-shop for the best test tools within Metro Manila.

Read more