temperature sensors Articles

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The Fundamentals of the Air Sampler Calibration-Verification Process

by F&J SPECIALTY PRODUCTS, INC.  (May 19, 2015)

INTRODUCTION The calibration of an air sampling instrument using a reference air flow calibrator requires attention to scientific detail in order to establish that the instrument’s reported values are correctly stated and valid under the actual operating conditions of the air sampling instrument. DEFINITIONS For the purposes of this ...

Boiler Dissolved Oxygen Control

by IC Controls Ltd.  (May 20, 2015)

DISSOLVED OXYGEN CHEMISTRY Dissolved Oxygen (DO) is a measure of the amount of oxygen, usually thought of as a gas, that is dissolved in a liquid such as water. Oxygen is essential to life and is also the most common element found taking part in corrosion reactions. DO can be thought of as the fuel needed for the corrosion process to proceed. It ...

Why is Calibration of Water Quality Testing Equipment so Important?

by In-Situ, Inc.  (May 8, 2015)

The calibration of water quality testing equipment is as important as the tuning of a musical instrument. When people find out I’m a chemist, the first thing they ask me is, “Are you Walter White?” (This shows you the kind of people I typically run into). The second thing they ask me is, “Why is calibration so ...

New Developments in Thermal Dispersion Mass Flow Meters: In-The-Field Compensation for Changes in Natural Gas Composition

by Sierra Instruments, Inc.  (May 5, 2015)

Introduction The flow of natural gas in pipelines is often complicated by changes in the composition of the gas. The method described in this paper solves the problem of variable composition via a new four-temperature mass flow sensor. The new (low sensor feeds its measurements into the algorithms of an advanced mathematical model that includes ...

Q&A: Patrick Wagnon on glaciers and climate change

by SciDev.Net  (Apr. 17, 2015)

Patrick Wagnon is a glaciologist at the Institute of Research for Development in France, and a visiting scientist at the International Centre for Integrated Mountain Development in Kathmandu, Nepal. As a global ‘glacier chaser’, he has summited some of the highest mountains in the world, including the 8,516 metre Lhotse in the ...

Moisture in Oils: The Three-Headed Beast

by Arizona Instrument LLC  (Apr. 14, 2015)

Abstract Moisture contamination in in-service lube oils is perhaps one of the most destructive forms of engine corrosion second only to particle contamination.  Water contamination in oil can be categorized into three forms of water; Free, emulsified, and dissolved.  All forms of water have direct consequences to the oil and gears of ...

Performance characteristics of a Thin-film aluminum oxide humidity sensor case study

by Moisture Control & Measurement Ltd  (Jun. 10, 2014)

Summary A laboratory study was made of the performance of a miniature-size, thin-film aluminum oxide humidily sensor over a range of ambient temperatures from 0°C to 40°C and encompassing humidities from 40 to 78,000 parts per million by volume (ppm-v). Hysteresis and temperature effects of the sensors were obtained from tests performed at ...

What is Temperature Mapping and Validation Study Service : UAE

by Vacker LLC  (Dec. 25, 2013)

What is Temperature Mapping and validation In this video we are trying to explain what is temperature mapping and validation study for ware houses, cold rooms, chiller rooms, refrigerators, reefer, freezers, vehicles etc. Also we explain the procedures for carrying out the same. Vacker Group carries out Temperature Mapping and Validation Study ...

Flow Profiling on Demand – Illuminating the reservoir with Silixa’s intelligent Distributed Acoustic Sensor (iDAS) and ULTIMA Distributed Temperature Sensor (DTS)

by Silixa Ltd  (Mar. 22, 2013)

As energy demands increase rapidly, the goal of energy companies is to maximize ultimate recovery in an economically sound manner. One critical capability is the accurate measurement and monitoring of production from individual layers / perforated intervals in a multi-zone completion. This data allows operators to optimize zonal production, ...

Method for Computing alkalinity based on Total Inorganic Carbon (TIC) and related data case study

by TOC Systems, Inc.  (Mar. 2, 2015)

Summary Standard Methods (Ref. 1) has a procedure using nomographs for estimating COt concentrations (Method 4500-CO2 B) based on total alkalinity titrations. The method presented here reverses that process by computing alkalinity based on TIC measurements using infrared technology. These two methods are demonstrated to be compatible, which is not ...

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