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Information regarding the B and G (brookes and gatehouse) sensors for the H2000 and the H3000 systems. 213 MHUThis is the standard Masthead Unit for the BandG H2000 and H3000 systems, you can change/replace the bearings of the windvane and wind cups. The bearings are according to the English (imperial) system. Read this article: http://blog.oppedijk.com/2011/10/26/b-and-g-wind-bearings-replacement/ for info on the replacement of the 213 and 496 MHU. Or in case of a hardware failure, remove the PCB: http://primus.bandg.com/icrbg/BandG%20FAQs/H2000%20FAQS/FAQ%20-%20213%20MHU%20PCB%20Swap.pdf For the wiring and the connector read this document: ClinometerThe clinometer (690-00-004) used by B&G seems to be linear in it's output, here is a table with some raw measurements:
Maximum heel value displayed on the displays is around 60 degrees The measured linear function seems to be: So it seems like the heel angle covers 300 degrees of tilt (+/- 150 degrees), so the correct function seems to be: Trim should be the same. Using a clinometer improves the measurements to the Apparent Wind Angle (AWA)
Building a custom Heel and Trim sensor is quite easy, use a sensor (e.g. Memsic MX2125) and an Arduino Atmega to process the pulses and output a voltage into the B&G main processor. Should work with H3000 also. Cost about 50 euro for heel and trim (compared to 2x 800 euros for official B&G)
The formula is: outValHeel = pulseX*0.056-116.43;
Temperature sensorSea temperature Part no: 224-00-065 http://primus.bandg.com/icrbg/BandG%20FAQs/H2000%20FAQS/FAQ%20-%20Sea%20Temp%20resistance.pdf 1.0 volt = -6.0 degrees C Barometer sensorNo measurements at this moment |