Resources

12th December 2024

What calibration interval / frequency should you use?

Calibration interval / frequency can vary based on several factors such as application, safety regulations, QA requirements, industry standards, and performance needs. There’s no universal answer, but here are some…

Guide to Calibrating HART-Capable Electronic Valve Positioners

Abstract: This white paper aims to provide a general overview of the calibration process for HART (Highway Addressable Remote Transducer) capable electronic valve positioners. As industrial processes become more sophisticated and demand…

Application Note – Hydrostatic Testing

This application note will describe the process and reasoning behind hydrostatic testing. Hydrostatic Testing Hydrostatic Testing (also known as stack testing or a hydro test) is a method of pressure testing various…

Guide to Calibrating Pressure Switches

A Comprehensive Guide to Calibrating Pressure Switches with a Focus on Dead Band Optimization Abstract: Pressure switches play a critical role in various industrial applications, ensuring the safety and efficiency of…

Power quality analysis in medium voltage facilities

Power quality begins with electricity generation. In theory, the nice generated sine should travel the whole way to the consumer and remain the same on the way back. In practice, this doesn’t…

Public places electrical safety

Measurements After the installation passes visual inspection, electrical measurements are necessary to ensure operational safety. Earth resistance is measured at the main earth electrode. If there is space available and ground allows…

Using disconnected transmission lines in ground resistance measurements

Measuring a large earthing system is difficult. It takes extremely long wires, possibly multiple kilometres long, and repetition of the measurement at different locations to validate the result. Some of these problems…

Earthing and Lightning Protection in Thermal Energy Power Plants

Traditional fuels for generation of electrical energy include burning of fossil fuels, waste, biomass, and nuclear energy. Their obvious problem is environmental cost. The footprint is high for fossil fuels, mainly as…

ADT875 Series Dry Block Calibrator

Additel’s New 875 Dry Block Calibrator series Provides Portability, Ruggedness, and Precision Over a Wide Temperature Range Zedflo along with Additel Corporation introduces their new ADT875 Dry Block Calibrator series. It consists of…

Metrel LV and HV Electrical Safety Training Equipment

Since its foundation 60 years ago METREL has accumulated a wealth of knowledge in the field of Electrical Testing and Measurement. Part of this knowledge is infused into every Instrument that they…

What is the difference between NATA and traceable?

What is a ‘NATA’ calibration?A NATA endorsed calibration certificate can only be issued by a NATA accredited laboratory.It means that the calibration laboratory has been assessed and audited in accordance with the…

Metrel PQA: measuring PV inverter efficiency

Amongst the many applications our power quality analysers (PQAs) are suitable for, is also measurement of power efficiency of 1- and 3-phase inverters in photovoltaic (PV) electrical installations. Supported analysers include the…

Zedflo achieves NATA Accreditation for Electrical Calibrations

We’re pleased to announce that Zedflo are now NATA accredited for calibration of ELECTRICAL and PRESSURE parameters. Zedflo has been offering calibration services since 2016, and in 2021 Zedflo’s laboratory and quality…

How do Pipes Work?

You might think that the way that pipes work is pretty easy – after all they are essentially just tubes that water and gas run through. In fact though, pipes have a…

Choosing a suitable Temperature Switch

The right temperature switch is usually calibrated to react to any changes that occur in the heat levels of an application with immediate effect. This occurs because the device has a component…

What You Should Know About Pressure And Temperature Switches For Steam Boiler Applications

Boilers have been used in various industries for many years now. The older versions of such pieces of equipment have been carved from wrought iron whilst the more modern versions that we…

Is Instrument Calibration All That Important?

Before we start, what is involved in instrument calibration? It involves comparing the measurements of two instruments, one with a known correctness or magnitude against another of unknown magnitude or which the…

How To Replace The Pressure Control Switch For Your Water Pump

Removal and replacement of the water pump pressure control switch is not usually an easy task especially for people with little know-how on such matters. Luckily, you can follow detailed steps that…

Insights On The Interchangeability Of A Pressure Sensor Gauge

The accuracy that you get when you swap one sensor for another (same model, range and brand) sums up the entire idea of sensor interchangeability. Accurate and effective sensor interchangeability is usually…

Reasons Why Paddlewheel Flowmeters Are A Popular Option

If you are looking for above average meter accuracy then paddlewheel flowmeters are one of your best options. They are easy to install compared to other meters and they can measure flow…

5 Instances Where Pressure Sensors Come In Handy

Any engineer or technician who understands process control instrumentation and beyond will tell you for a fact that you cannot write off the importance of pressure sensors in the technical world. They come…

Why Temperature Compensation Really Matters for Pressure Measurement

Have you ever wondered how much impact environmental temperature has on your pressure sensors? Nearly every pressure sensor has some sort of environmental temperature specification on its data sheet. This technical note…

A Quick Look At Terms Associated With Pressure And Temperature Switches

When it comes to pressure and temperature switches, many of the terminologies associated with them can be confusing. This article will serve as a quick reference point for some very crucial terms…

Calibrating Pressure Switches In 5 Easy Steps

Pressure switch technology has numerous practical applications, but in order to ensure the optimal functionality of these adjustable devices, calibrating them correctly is of chief importance. First and foremost, don’t start fiddling…

Pressure Transmitter Calibration

Why Choose Our Pressure Transmitter Calibration Service Industry Leaders Nationwide for Professional Pressure Transmitter Calibration Services Zedflo has been a market leader in test and measurement equipment since 1982. In 2014 we established a…

RCD Tester Calibration

Why Choose Our RCD Tester Calibration Service Industry Leaders Nationwide for Professional RCD Tester Calibration Services Zedflo has been a market leader in test and measurement equipment since 1982. In 2014 we established…

Installation Tester Calibration

Why Choose Our Installation Tester Calibration Service Industry Leaders Nationwide for Professional Calibration Services Zedflo has been a market leader in test and measurement equipment since 1982. In 2014 we established a service…

Current Clamp Meter Calibration

Why Choose Our Current Clamp Meter Calibration Service Industry Leaders Nationwide for Professional Calibration Services Zedflo has been a market leader in test and measurement equipment since 1982. In 2014 we established a…

Pressure Switch Calibration

Why Choose Our Pressure Switch Calibration Service Industry Leaders Nationwide for Professional Calibration Services Zedflo has been a market leader in test and measurement equipment since 1982. In 2014 we established a service…

Multimeter Calibration

Why Choose Our Process Calibration Service Industry Leaders Nationwide for Professional Calibration Services Zedflo has been a market leader in test and measurement equipment since 1982. In 2014 we established a service…

Pressure Calibrator Calibration

Why Choose Our Pressure Calibrator Calibration Service Industry Leaders Nationwide for Pressure Calibrator Calibration Services Zedflo has been a market leader in test and measurement equipment since 1982. In 2014 we established…

Digital Pressure Gauge Calibration

Why Choose Our Digital Pressure Gauge Calibration Service Industry Leaders Nationwide for Digital Pressure Gauge Calibration Services Zedflo has been a market leader in test and measurement equipment since 1982. In 2014 we…

Analogue Pressure Gauge Calibration

Why Choose Our Analogue Pressure Gauge Calibration Service Industry Leaders Nationwide for Analogue Pressure Gauge Calibration Services Zedflo has been a market leader in test and measurement equipment since 1982. In 2014 we…

Process Calibration

Calibration Services

Why Choose Our Calibration Service Industry Leaders Nationwide for Professional Calibration Services Zedflo has been a market leader in test and measurement equipment since 1982. In 2014 we established a service and…