Calibration of Temperature Sensors in the Process Industry – Part II

To continue our discuss on calibration of temperature sensors in the process industry, we are going to move on to dry-block calibrators. Dry-block calibrators incorporate a heating/cooling element, but do not require the use of any liquids such as oil to perform their calibration tasks.  The units typically consist of a heating "block", an internal sensor, and some type of control to reach and maintain desired temperature ranges.  Some advanced dry-blocks also have internal reference sensors and associated accuracies thus eliminating the need for an external reference sensor.  Because there is no oil…Read more

Calibration of Temperature Sensors in the Process Industry

Temperature sensors within the process and pharmaceutical industries are important devices in ensuring that the process runs smoothly and product specifications are met on a continuous basis.  The calibration of these sensors on a regular schedule is important to provide confidence in the measurements being taken and thus the quality of the end product being produced.  This blog looks at the various types of temperature sensors, contrasts the value/benefit of dry-block calibrators verses liquid bath calibrators, and the effective process to follow in specifying and procuring temperature calibrators. Where are the temperature sensors…Read more

Using the Ralston Instruments Volume Controller for Pressure Control Applications

The Volume Controller (QTVC) from Ralston Instruments is the ideal lab tool.  Calibrate both very low pressure or high pressure instrumentation using nitrogen with an attached pressure gauges or calibrator.  The proprietary pressure balanced fine adjust piston allows for extremely precise, finger-tip control of pressure at 0.03 psi (2 mbar) or 3000psi (210 bar) or any range in between.  The test system includes a handle, Quick-test System outlet connections, hoses and adapters.  The Volume Controller is a versatile instrument useful for many types of calibration processes.  Find out more below and watch the…Read more

Backflow Preventer Calibration

The backflow prevention device is one of the most crucial tools in a plumber's arsenal and as such it needs to be counted on for both accuracy and consistency. This reliability must be maintained though, as even the most precise instruments will inevitably drift over time and being to lose their accuracy.  This change can often be hard to detect but can lead to severe consequences.  Calibration is the process of offsetting this drift and allowing the device to continue reading at its optimal level.  By comparing the device under test to our…Read more

Trouble Shooting your XP2i Digital Test Gauge

The XP2i digital test gauge from Crystal Pressure - a division of Ametek Test & Calibration Instruments is an extremely useful tool.  It is ultra-rugged, intrinsically safe and has an accuracy level of 0.1% of reading, 0.02% of full scale (-S2) or 0.05% of full scale (-S5).  It is the perfect tool for measuring and recording (with the optional DataloggerXP software upgrade) pressure in the field or in the lab.  The XP2i is available in pressure ranges from 15psi up to 15,000psi and is fully temperature compensated from -10°C to 50°C.  Below is…Read more

A Discussion on Multifunction Calibrators

A multifuntion calibrator is most often used when the workload of the technician is unpredictable - the technician knows the work involves parameters that may deal with temperature, pressure, and electrical, but showing up at the jobsite with insufficient equipment means lost time and could be costly. Multifunction calibrators, as their name implies, combine the 4 to 20 mA function with the following parameters:  RTD, T/C, voltage, frequency, pressure, etc.  They are reasonably ergonomic, depending on the manufacturer, and their functionality is more than any technician would need to get the job done. …Read more

Ametek Dry-Block Calibrator – Arla Foods Case Study

Ametek offers application solutions for a wide range of industries world-wide.  The need to calibrate is integral to the processes of many industries.  Not only can regular calibrations reduce costs and improve profits by eliminating inefficiencies but they also increase product yields and ensure quality assurance along with optimizing worker hours. Arla Foods in Hobro, Denmark is a dairy processing facility.  They were working with traditional calibration baths and a setup with an Ametek DTI 1000 / STS reference thermometer, to calibrate about 200 sanitary sensors in the dairy.  An average of 50…Read more

A Discussion on Single-Function Calibrators

There has always been a dilemma amongst Instrumentation Tech's who are starting out on their own as contractors:  what calibration equipment can I buy on a limited budget?  The decision ultimately comes down to a choice of a multifunction calibrator, or a couple of single-function models that will replicate the parameters of a multifunction calibrator.  Let's spend some time to investigate the features and benefits of using single-function calibrators.  What is the best tool for the job? A single-function calibrator is most often used when the workload of the technician is predictable -…Read more

Pressure Gauge Buyer’s Guide

With new technology always under development, shopping for the right pressure gauge grows more confusing by the month.  It's easy to get lost in the details and end up with a gauge that doesn't meet the requirements.  This buyer's guide explains the important features and specifications to look for and understand when purchasing pressure measurement devices. Performance Error Prevention:  When working with high pressure or flammable materials, it is important to select a gauge that helps avoid the occasional human error.  Some errors threaten safety, while others threaten the quality of results.  To…Read more

Wind Turbine Testing with the HPC40

One of the fastest growing worldwide energy industries is wind power.  In the United States alone, the wind industry has an average annual growth over 25% over the last 10 years.  Wind farms consisting of multiple wind turbines, are becoming an important source of renewable energy, reducing the reliance on fossil fuels. Wind turbines take kinetic energy created from rotating blades, and converts the energy to electrical power.  They are built in areas of steady winds, and many times are monitored and controlled by hydraulic systems. Hydraulic systems play a crucial role in…Read more