Compass calibration - Revision history

137.229.92.243 at 19:56, 28 March 2013

2013-03-28T19:56:25Z

137.229.92.243 at 19:56, 28 March 2013

2013-03-28T19:56:11Z

137.229.66.77 at 18:42, 29 June 2011

2011-06-29T18:42:17Z

imported>Eyoucha at 18:57, 2 April 2010

2010-04-02T18:57:36Z

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Compass calibration requred before measurement if using a GPS. Calibration and evaluation less than 2 degrees according to RDI guidance. Better yet, should be less than 1 degree (evaluation) from USGS guidance.

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 Compass calibration requred before measurement if using a GPS.  Calibration and evaluation less than 2 degrees according to RDI guidance.  Better yet, should be less than 1 degree (evaluation) from USGS guidance.
-We now use the Homan method to calibrate the streampro compass.  It works best if you turn the instrument until you get a green bar.  Then hold for 5 seconds or so.  Then slowly turn the instrument until you get the next green bar.  Then stop and hold for 5 seconds again.  Continue on with this until you are finished in a complete circle.  Then you will have to repeat it again for the evaluation and it will give you your score at the end.  You should get less than 2 degrees error.  Here is two people doing it, one person tends to work better (with a second on the computer):
+We now use the Homan method to calibrate the streampro compass.  It works best if you turn the instrument until you get a green bar.  Then hold for 5 seconds or so.  Then slowly turn the instrument until you get the next green bar.  Then stop and hold for 5 seconds again.  Continue on with this until you are finished in a complete circle.  Then you will have to repeat it again for the evaluation and it will give you your score at the end.  You should get less than 2 degrees error.  Here is two people doing it, one person tends to work better (with a second on the computer):<br>
 http://werc.engr.uaf.edu/~bob/discharge/2011_Itkillik_ADCP_Setups/large-1.html

← Older revision		Revision as of 19:56, 28 March 2013
Line 1:		Line 1:
	Compass calibration requred before measurement if using a GPS. Calibration and evaluation less than 2 degrees according to RDI guidance. Better yet, should be less than 1 degree (evaluation) from USGS guidance.		Compass calibration requred before measurement if using a GPS. Calibration and evaluation less than 2 degrees according to RDI guidance. Better yet, should be less than 1 degree (evaluation) from USGS guidance.

−	We now use the Homan method to calibrate the streampro compass. It works best if you turn the instrument until you get a green bar. Then hold for 5 seconds or so. Then slowly turn the instrument until you get the next green bar. Then stop and hold for 5 seconds again. Continue on with this until you are finished in a complete circle. Then you will have to repeat it again for the evaluation and it will give you your score at the end. You should get less than 2 degrees.	+	We now use the Homan method to calibrate the streampro compass. It works best if you turn the instrument until you get a green bar. Then hold for 5 seconds or so. Then slowly turn the instrument until you get the next green bar. Then stop and hold for 5 seconds again. Continue on with this until you are finished in a complete circle. Then you will have to repeat it again for the evaluation and it will give you your score at the end. You should get less than 2 degrees error. Here is two people doing it, one person tends to work better (with a second on the computer):
		+	http://werc.engr.uaf.edu/~bob/discharge/2011_Itkillik_ADCP_Setups/large-1.html

← Older revision		Revision as of 18:42, 29 June 2011
Line 1:		Line 1:
	Compass calibration requred before measurement if using a GPS. Calibration and evaluation less than 2 degrees according to RDI guidance. Better yet, should be less than 1 degree (evaluation) from USGS guidance.		Compass calibration requred before measurement if using a GPS. Calibration and evaluation less than 2 degrees according to RDI guidance. Better yet, should be less than 1 degree (evaluation) from USGS guidance.
		+
		+	We now use the Homan method to calibrate the streampro compass. It works best if you turn the instrument until you get a green bar. Then hold for 5 seconds or so. Then slowly turn the instrument until you get the next green bar. Then stop and hold for 5 seconds again. Continue on with this until you are finished in a complete circle. Then you will have to repeat it again for the evaluation and it will give you your score at the end. You should get less than 2 degrees.