Wednesday, March 18, 2020

Coronavirus Update and Mitigation

Every day brings new developments related to Coronavirus, and we understand that uncertainly can be unsettling. Our hearts go out to those who have been impacted and our families and communities need to be kept safe and protected.

Hile Controls of Alabama, Inc. is committed to the health and well-being of our employees, customers and suppliers. We are monitoring the local situation and in contact with our suppliers on their ability to continue operations and shipments of orders. In addition, we are also monitoring the reports from the Centers for Disease Control (CDC) and the World Health Organization (WHO). Here are a couple of links you may want to review regularly for up to date and useful information:

  • CDC Resources for Businesses and Employers

We realize that, in this time of crisis, it is critical that we make it possible for you to continue your operations and to help you respond to the unique demands that you may be facing in your business. Our capabilities are wide ranging and varied:

  • We are a small office - open and fully functional and following the cleanliness and health guidelines at our office in Pelham, at this writing.
  • Our phones have been VOIP for years; which means we can take our office phones home and have the capability to answer your calls, even if we must shelter-in-place.
  • Our business system is also on the cloud, which means we have access to your orders and proposals with a touch of a few keys.
  • We have the ability to work with you through teleconferencing, Zoom calls and Facetime, so that we are all working within the guidelines of safe practices. 

As the spread lessens, which it will, we will continue to assist you with fast responses to your requirements for information, new ideas and innovative thought. We pray for the quick disposal of this virus that haunts us this day but have faith there are much better and brighter days ahead. Take care of yourselves, your loved ones and those that are at high risk within the community.

May God be with you and peace to us all.

Grady Andrews
Hile Controls of Alabama, Inc.
ph: 205-620-4000
cell: 205-438-0983

Tuesday, March 10, 2020

New Product Alert: Pre-engineered Universal Process Control Panels by Schneider Electric - Eurotherm

Eurotherm by Schneider Electric is a worldwide manufacturer of precision process controls and data recorders.

Eurotherm is now manufacturing two new, pre-engineered, universal process control panels fitted with BACnet communications for easy integration into building automation systems. These control panels feature either the Eurotherm EPC3004 controller or nanodac™ Recorder/Controller and are designed for customers who typically like to use Eurotherm control products but have difficulty in getting them assembled into a control box or panel.
  • The EPC3000 range of programmable single loop process and temperature controllers maximizes efficiency and repeatability and are certified for cybersecurity communications robustness. The EPC3000 controller range is Ethernet enabled as standard and is the first Eurotherm controller to be designed and certified to meet the stringent cybersecurity requirements of Achilles® Communications Robustness Testing Level 1. Now the EPC3000 has native BACnet connectivity and provides the OEM and user a direct connection to building automation systems without the need of a costly and time-consuming third party gateway.
  • The nanodac™ recorder/controller offers the ultimate in graphical recording combined with PID control for a box of its size. The compact ¼ DIN panel mount unit offers four high accuracy universal inputs for data recording and PID control. This secure data recording device with accurate control is enhanced by a full color, ¼ VGA display to bring a crystal clear operator interface to even the smallest of machines. The nanodac™ is the industry’s first process controller and digital data recorder available with native BACnet.
The new pre-engineered universal process control panels are designed to satisfy a wide variety of industrial applications. This standard designed UL508A approved industrial control panel is ideal for customers who have projects where a custom control panel is not budgeted, and lead times are extended. The Eurotherm standard control panel includes all IO points wired to an easily accessible industrial terminal strip, alarm lights, a on/off switch, a 24 volt power supply transformer, and are standardly NEMA 4. They are currently manufactured and in stock at Eurotherm's plant in Virginia.

For more information, contact Hile Controls of Alabama. Call them at 800-536-0269 or visit their website at

Wednesday, February 26, 2020

Applications Guide for Jordan Valve Products

Jordan Valve manufactures industrial pressure regulators, temperature regulators, and control valves.  Jordan's products are suitable for a variety of applications with a focus on power and utilities. While steam is their primary application, they have excellent success in industrial gasses, air, water, lube oil, and various chemicals.

Their products are used in many demanding applications - very often in applications requiring more than a standard, off-the-shelf industrial product. The unique construction of the Jordan Valve Sliding Gate seat makes their regulators and control valves the ideal choice for many applications.


For more infomration about Jordan Valve, contact Hile Controls of Alabama. Call them at 800-536-0269 or visit their web site at

Friday, January 10, 2020

Using Bluetooth to Startup and Commission the Honeywell OELD

The Honeywell Optima Excel Local Display (OELD) is a Bluetooth-enabled smart junction box for the Searchpoint Optima Plus and Searchline Excel infrared detectors for flammable hydrocarbons. The OELD includes an LCD screen for gas information, a “traffic light” indicator for at-a-glance detector status, andBluetooth® connectivity for simplified, non-intrusive maintenance. Simply pair the OELD with our intrinsically safe, ruggedized smartphone; then use the OELD smartphone app to interact with the gas detector from up to 10 meters (30 feet) away. For maximum flexibility, the gas detector can be mounted either directly or remotely to OELD to suit any situation.

For more information, contact Hile Controls of Alabama. Call them at 800-536-0269, or visit their web site at

Monday, December 23, 2019

Happy Holidays from Hile Controls of Alabama

"Christmas gift suggestions: To your enemy, forgiveness. To an opponent, tolerance. To a friend, your heart. To a customer, service. To all, charity. To every child, a good example. To yourself, respect." — Oren Arnold

Friday, December 20, 2019

Vortex Shedding Flowmeter Operating Principle

Vortex Shedding Flowmeter Operating Principle

Measuring Principle - Kármán vortex street

This variety of flowmeter operates on the principle of Kármán vortex street, whereas any medium passing through the pipeline and flows around the bluff body, sheds a series of alternating vortices on each side of the body. This phenomenon is referred to as Vortex Shedding. These vortices shed downstream of the bluff body and dissipate as they flow further. This pattern of vortices is called a Kármán vortex street (also called a Von Kármán vortex street).

Operation pf Vortex Flowmeter

A Vortex flowmeter primarily consists of a bluff body, a sensor assembly, and a transmitter. A bluff body or a shedder is nothing but a non-streamlined object or a barrier placed perpendicular to the axis of the pipeline, around which the medium flows.

Vortex Shedding Flowmeter Operating Principle

Calculation of the Mass Flow Rate

The frequency of the vortices, i.e. the number of vortices shed per second, is directly proportionate to the velocity of the medium. This Vortex Shedding Frequency is used to calculate the mass flow.
The sensor assembly records the pressure and velocity oscillations generated on each side of the bluff body by the vortices and generate a digital linear output signal. The Vortex Shedding Frequency is calculated using the following formula:

f = St * V/d

f = Frequency of Vortex Shedding St = Strouhal Number
V = Flow Velocity
d = Width of the Bluff Body

Strouhal Number St

The Strouhal Number in the above formula is also called as “reduced frequency”. It is a dimensionless param- eter that is a measure of the Vortex Shedding Frequency and the velocity of the flow medium. It is calculated using the formula:

St = fd/U

f = Frequency of Vortex Shedding d = Width of the Bluff Body
U = Velocity of the Flow Medium

The Strouhal Number is a function of the Reynold’s Number. Reynold’s Number is also a dimensionless parameter that is used to determine how the flow pattern of different fluids will change. The Strouhal Number should remain constant when the Reynold’s Number ranges from 2 × 104 to 7 × 106.

Calculation of Volume Flow Rate

When the Vortex Shedding Frequency is known, the volumetric flow rate can be calculated using the formula:

q = f/k * d

q = Volumetric Flow Rate
f = Vortex Shedding Frequency
k = k Factor, which is a ratio of the pulses transmitted to the unit volume.

You can download the TEK-TROL Tek-Vor 1300C Vortex Flowmeter Brochure from the Hile Controls of Alabama web site here.

For more information about vortex shedding flowmeters, contact Hile Controls of Alabama. Call them at 205-620-4000 or visit their web site at

Vortex Shedding Flowmeters