The following warnings occurred:
Warning [2] count(): Parameter must be an array or an object that implements Countable - Line: 802 - File: showthread.php PHP 7.3.33 (Linux)
File Line Function
/showthread.php 802 errorHandler->error





Post Reply 
 
Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
How to get a dew point temperature on ST70 and i70s instruments
08-22-18, 08:23 AM
Post: #1
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.
Find all posts by this user
Quote this message in a reply
Post Reply 


Messages In This Thread
How to get a dew point temperature on ST70 and i70s instruments - neko-koneko - 08-22-18 08:23 AM

Forum Jump:


User(s) browsing this thread: 1 Guest(s)