| White papers contain product comparatives, analyses, and research material.
| The documents below are in Adobe PDF format and require Adobe Acrobat Reader Version 6.0 or greater to open. |
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HVACR/BAS
A comparison of chilled mirror hygrometers
Metrology
An Intercomparison of a Two-Pressure/Two-Temperature Frost Point Generator and Chilled Mirror Condensation Hygrometer
Humilab Benchtop Humidity calibration system
The Theory and Operation of Optical Chilled Mirror Hygrometers for Humidity Calibration
Condensation Hygrometers as Humidity Transfer Standards
A comparison of chilled mirror hygrometers
Development of a Bench-Top Time Proportional Humidity Generator with Chilled Mirror Hygrometer Reference Standard
The State of Pressure Uncertainty by Ken Kolb
Differential Pressure Primary Standard - Technical Aspects
Dew Point Measurement in Metal Heat Treatment
The Effect of Air Laden Soluble Salts on Dew Point Measurement Using Condensation Hygrometers, Reprint Jul-Sep 2005 Cal Lab Magazine
Moisture
"Achieving Reliable Parts-Per-Billion Calibration of Moisture Analyzers" published in the proceedings CD of the 2007 NCSLI Workshop and Symposium
Care of Grain: Guide to Professional Grainstore Management
Dampness Measurement in Concrete Floors
Ventilation, damp, mould & condensation feature article from "Housing Association Building and Maintenance", Nov 2006
Pharmaceutical
Development of a Bench-Top Time Proportional Humidity Generator with Chilled Mirror Hygrometer Reference Standard
Ion trap mobility spectrometry-reducing downtime in cleaning validation and verification
Direct Swabbing and Surface Recovery with Ion Trap Mobility Spectrometry
Pressure
"Direct Measurements of pressure-induced distortion in a piston-cylinder using a capacitance technique". By Moisoi of GE Sensing and Severn and Sumner of NPL. Copyright© Institute of Physics and IOP Publishing Limited Nov 2005.
Precision Pressure Generation for Test & Calibration, R G Brown. Presented to IoP International Pressure Metrology Conference, April 2005, Portland Place, London UK. Copyright© Institute of Physics and IOP Publishing Limited 2005
Gas
Moisture Measurement in
Natural Gas
Article reprint from Chemical Engineering World, August 2006 (462KB PDF)
How much do you flare? How to measure flowrates of flare gas accurately and reliably. Article from Process WORLDWIDE 03-2006 (2MB PDF)
Process
UR-232: Rule of Thumb for Quick Conversion of Molecular Weight to Density in lb/m³ (Pounds Per Cubic Meter) for Ideal Gases at Standard Conditions (39KB PDF)
UR-274: Transit-Time Ultrasonic Flowmeters for Gases — Presented at and published in part in the Proc. 41st Annual Canadian Gas Association Gas Measurement School at Grand Okanagan, Kelowna, BC, Canada, on June 4-6, 2002.
Part 1 (566KB PDF)
Part 2 (1.9MB PDF)
Part 3 (308KB PDF)
Part 4 (72KB PDF)
Part 5 (1MB PDF)
UR-268: Ultrasonic Clamp-On Flow Measurement of Natural Gas, Steam, and Compressed Air (390KB PDF)
UR-240: Ultrasonic Mass Flowmeters Using Clamp-On or Wetted Transducers (787KB PDF)
UR-234: Ultrasonic Flow Measurement: Technology and Applications in Process and Multiple Vent Stream Situations (1.6MB PDF)
UR-267B: Measurement of the Flow of Superheated Water in Blowdown Pipes at MP2 Using an Ultrasonic Clamp-On Method (1.6MB PDF)
UR-262:Transit Time Ultrasonic Flowmeters Stretch Their Application Reach (209KB PDF)
UR-242TBP-WV: Measurements at the Speed of Ultrasound: Friendly Regards from Fermat (267KB PDF)
UR-257: Ultrasonic Flow Measurement at High, Cryo or Ordinary Temperatures Using Wetted and Clamp-On Transducers (82KB PDF)
Latest Process Control Instrumentation Technology (111KB PDF)
Full Steam Ahead, Clamp-On Flow Measurement No Longer Just for Liquids; Jul 2005 Processing Magazine Flowmeter Handbook reprint (90KB PDF)
Ultrasonic flowmeters improve delayed coker reliability. Article appeared in Hydrocarbon Processing 05-2008 (238kb PDF)
Temperature
Automotive Temperature Sensing
General Purpose Sensor Assemblies
NTC Thermistors
PTC Thermistors
SMT Power Thermistors
Thermopile IR Sensor Applications Notes
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