How to get a dew point temperature on ST70 and i70s instruments
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08-22-18, 08:23 AM
Post: #1
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How to get a dew point temperature on ST70 and i70s instruments
Dear Raymarine team!
We have an issue with ST70 and i70s instruments. We use a Yacht Devices Humidity Sensor YDHS-01 to provide a Dew Point temperature data via - PGN 130312 "Temperature" with "Temperature Source" = 09 ("Dew Point Temperature") - PGN 130316 "Temperature, Extended Range" with with "Temperature Source" = 09 ("Dew Point Temperature"). YDHS-01 is also capable of transmitting temperature and humidity data in 130311 "Environmental Parameters" PGN. However, both ST70 and i70s instruments show dew point value as "—". From the i70s instrument "Installation & operation instructions" I can see that 130312 and 130316 PGNs are currently not supported by i70s instrument. So I assume that the dew point temperature is a calculated value based on the humidity and temperature values given in 130310 and 130311 PGNs. PGN 130310, on the other hand, is not supported by YDHS-01, so the only PGN which is available on both devices is 130311 "Environmental Parameters". Unfortunately, I could not find the supported PGN list for ST70 instrument. Q1: Does ST70 support PGN 130311? Q2: Will the support of the 130312 and 130316 PGNs and the "Dew Point Temperature" Temperature Source be added in the future firmware updates for i70s? Q3: Is a dew point temperature calculated by the instrument? Is it based on the humidity and temperature values given in 130310 and 130311 PGNs? Q4: Is there is a possibility to setup ST70 and i70s instruments to use 130311 PGN temperature and humidity data to get a dew point displayed? Q5: We can change "Temperature Instance" and "Humidity Instance" data fields of 130311 PGN on YDHS-01 and set both as "Inside Temperature/Humidity" or "Outside Temperature/Humidity". Does those setting affect a dew point indication? Which settings are correct? Thank you, waiting for reply. |
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Messages In This Thread |
How to get a dew point temperature on ST70 and i70s instruments - neko-koneko - 08-22-18 08:23 AM
RE: How to get a dew point temperature on ST70 and i70s instruments - Chuck - Raymarine - Moderator - 08-22-18, 01:43 PM
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