Cyclops™ Infrared Thermometers-Update

An Update on the Handheld IR Thermometer line that took over from DFPs* The NEW Land Cyclops L family of high quality portable non-contact radiation thermometers provides spot temperature measurement with incredible accuracy and reliability. The Cyclops product line is still going strong after nearly 30 years! Features such as a precision view of the measurement target spot with simultaneous digital display of temperature in the viewfinder, choice of operating and calculating modes, digital output and out of range alarms are provided as standard. The Cyclops L family of non-contact portable thermometers introduce several new features to this instrument “dynasty”. … Continue reading

IMPROVING HUMIDITY MEASUREMENTS IN METEOROLOGY

A product with a unique advantage Air humidity and temperature play an important role in meteorology. Highly accurate measurements of these climate parameters form the basis of accurate forecasts and meaningful records. The E+E Elektronik Model EE33 series humidity and temperature sensor is the only one on the market with a double-heated probe. Both the sensor tube and the sensor element are heated. An application note, free for download from their website, tells the rest of the story. You can download it be clicking here. If that does not work, as sometimes happens when organizations “refine” their websites, we have … Continue reading

Temperature Calibration & Metrology Web Seminar Archives

Fluke Calibration’s Focus on Basics – RTDs – Digital & IR (Infrared Radiation) Thermometers Online —  Fluke Calibration’s free online web seminars cover a wide range of calibration and temperature topics. More are scheduled monthly. To learn about upcoming events, check their web seminar page, or sign up for their e-news bulletins today. If you have missed out on one of their live web seminar events, you can view the recordings in their web seminar archives. Here’s a list of current ones along with links to them (as of 1 August 2013). They are mostly in English, but several are … Continue reading

UKAS-Accredited Calibration & Supply of Pt-Rh thermocouples

(0 °C up to 1600 °C) Teddington, UK —  The UK’s National Physical Laboratory (NPL) offers a UKAS-accredited thermocouple calibration service (laboratory number 0478) for platinum-rhodium thermocouples using freezing points of zinc, silver and copper (up to 1100 °C) and the melting points of gold and palladium (up to 1600 °C). (Type B thermocouples are calibrated from 400 °C) NPL also supplies calibrated platinum-rhodium thermocouples from stock. These are made from wires assembled into insulators and calibrated up to either 1100 °C or 1600 °C. … Continue reading

Thermocouple calibration at NPL – Supply of cobalt-carbon eutectic fixed point

For calibration of thermocouples (1324 °C) Teddington, UK — The UK’s National Physical Laboratory (NPL) now offers for sale the novel cobalt-carbon eutectic fixed point for thermocouple calibration with ultra-low uncertainties at 1324 °C. The melting point cell consists of a high purity graphite crucible containing an ingot of cobalt-carbon alloy constructed from cobalt and carbon each having a purity of at least 99.999%. The cells are supplied with an NPL certificate showing the melting temperature (uncertainty ± 0.55 °C, k = 2) of the cell determined, traceable to ITS-90, by radiation thermometry. For more information visit the NPL webpage … Continue reading

No More Mercury Thermometer Support in USA

New Info Worth Reposting The bulk of this article is from a NIST Press Release with edits that was originally posted on our companion news website, TempSensorNEWS.com on 14 June 2012 as: NIST’s Drive to Replace Mercury Thermometers Gaithersburg MD, USA — NIST researchers have developed a new website explaining the hazards associated with mercury thermometers and discussing potential alternatives for the temperature sensing needs of industry. Reducing the amount of mercury in the environment by recycling mercury thermometers also helps to reduce the amount of electricity we need to produce, which in turn reduces the amount of coal burned. … Continue reading

Triple Point Cell at 36.324 Degrees Celcius

About a unique Triple Point Cell based on Ethylene Carbonate  developed at Britain’s National Physical Laboratory (NPL) in a nearly 4 minute video from YouTube. It’s kind of a commercial, but a really useful one. It explains about this special calibration tool and how it can and is being used to help verify the calibration of sensors designed to measure human body temperature. … Continue reading

How to Realize a Triple Point of Water Cell

From Fluke Corporation In this video Matt Newman from Fluke Corporation’s Hart Scientific Division (www.HartScientific.com) demonstrates the proper technique for realizing a triple point of water cell for temperature calibration. Triple point of water cells are used for calibrating a variety of precision thermometers. The triple point of water cell is an intrinsic standard with a temperature defined to be 0.010 °C. This temperature is the most important temperature of the International Temperature Scale of 1990 (ITS-90) which is used to define the Kelvin unit of thermodynamic temperature on the International System of Units (SI). For more YouTube videos from … Continue reading

RTD Vendors

RTDs (Resistance Temperature Detectors)  are wire wound and thin film devices that depend on the temperature coefficient of electrical resistance of metals. As the temperature increases, the positive temperature coefficient of the metal produces an increasing resistance value. You can read more about them and how they work on the companion RTD pages. Some metals have a nearly ideal, linear coefficient, like platinum . While other materials have more non-linear coefficients, such a copper and nickel. This page provides links to some of the vendors of these devices. You may note some redundancy with links on related pages. A good … Continue reading

Some NMIs

National Standards Custodians (NMIs) & Governmental Services NIST’s Calibration Service Users Guide Direct calibrations by the USA custodian of temperature (and other) standards NIST MEASUREMENT SERVICES: Radiance Temperature Calibrations> An online technical description, in great depth, about the (a) realization and dissemination of ITS-90 above 700°C, (b) a description of the facilities in the NIST Radiance Calibration Laboratory, (c) A discussion of the the wavelength calibration, size of source and linearity issues, (d) An explanation of the use and calibration of radiance temperature standards, and, (e) A summary of the values of stability and uncertainty in the ITS-90 Scale at … Continue reading