NRG Tech Support Forums

Browse by Tags

NRG #40C Uncertainty and Classification

NRG Systems receives many questions regarding anemometer accuracy, uncertainty and performance. The application note "#40 Anemometer Uncertainty" found in the Technical Support Documentation area of the website addresses uncertainty and measurement, anemometer classification number and calibration...

Posted to Sensor Uncertainty (Forum) by johng on 09-23-2011
Updates to identification of dry friction whip

Are there any updated techniques to quantitatively identify periods of dry friction whip in the #40's since the release of the white paper and presentations in May 09?

Posted to Update on #40 Vibratory Mode (Forum) by tsmoker on 04-06-2010
Re: AWEA Windpower 2009 Presentation "Investigation of the NRG #40 Anemometer Slowdown"

You will need to analyze several months of data – at least 4 – 8 months, ideally – in order to detect a potential problem. You’ll need to compare wind speed data from pairs of sensors at the same height on the tower, excluding any wind speed data potentially affected by tower shadowing or shadowing due...

Posted to Update on #40 Vibratory Mode (Forum) by Julia Austin on 09-18-2009
Re: NRG #40 anemometers

Hi Steve, Thank you for your post. I'm concerned about your comment that NRG has not responded to you. Our last record of your correspondance with NRG was in April of 2009 for a PIN encryption issue. Since then, you have been pretty quiet. You may want to consider contacting tech support directly...

Posted to Update on #40 Vibratory Mode (Forum) by David Carlson on 08-04-2009
Re: Replacement of unused sensors

Please contact NRG Technical Support for a Return Authorization number, and we'll get those replaced for you.

Posted to Update on #40 Vibratory Mode (Forum) by Julia Austin on 07-29-2009
Re: vibration problem in #40 anemometer

Hello, Thank you for your question. Those sensors were purchased in 2007, and so are currently covered by warranty. When you have cases like this please contact your Sales Account Manager here at NRG, or contact technical support via email ( support@nrgsystems.com ). All the best, Dave

Posted to Update on #40 Vibratory Mode (Forum) by David Carlson on 05-22-2009
#40C & #40H Anemometer Drainage Ports

The #40C and #40H Anemometers feature drainage ports in the base of the sensor within the boom mounting tube. Exposure to water and moisture is a given in most anemometer field applications. As long as the sensor is allowed to properly drain, this should not affect the sensor's capabilities. However...

Posted to Standard Sensors (Forum) by Matt Riley on 04-06-2009

Page 1 of 1 (7 items)

Tech Forum

Browse by Tags

NRG #40C Uncertainty and Classification

Updates to identification of dry friction whip

Re: AWEA Windpower 2009 Presentation "Investigation of the NRG #40 Anemometer Slowdown"

Re: NRG #40 anemometers

Re: Replacement of unused sensors

Re: vibration problem in #40 anemometer

#40C & #40H Anemometer Drainage Ports