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Transmitters on Short Hoses?

Discussion in 'Sidemount Diving' started by bradymsu, Apr 13, 2021.

  1. jvogt

    jvogt Solo Diver

    # of Dives: 500 - 999
    Location: Lakewood, CO USA
    452
    370
    I assume it's "D-Ring".

    I was using button gauges with my transmitters until my cave instructor convinced me they were more of a liability then transmitters alone.
     
    RayfromTX likes this.
  2. hedonist222

    hedonist222 ScubaBoard Supporter ScubaBoard Supporter

    # of Dives: 500 - 999
    Location: Dubai, AbuDhabi, United Arab Emirates
    676
    302
    curious

    why are button gauges a liability when regular SPGs are acceptable?
     
    Paul M likes this.
  3. bradymsu

    bradymsu ScubaBoard Supporter ScubaBoard Supporter

    # of Dives: 1,000 - 2,499
    Location: Grand Rapids, Michigan, USA
    263
    100
    The concept is to add as few potential failure points as necessary. Only a single SPG or transmitter per tank is necessary. If it fails, you turn the dive. Diving within the Rule of Thirds, you'll always know you have enough gas for the exit. An additional SPG or button gauge shouldn't be used "for redundancy" as it's another potential failure point. Failure point is interpreted to mean a potential entanglement point as well.
     
    hedonist222 likes this.
  4. Paul M

    Paul M Contributor

    # of Dives: 200 - 499
    Location: Waterloo, ON
    187
    162
    In that case, I won't have a problem with that gauges being caught in my D-rings. :)
    upload_2021-5-3_14-48-7.png
     
    JBFG and RayfromTX like this.
  5. hedonist222

    hedonist222 ScubaBoard Supporter ScubaBoard Supporter

    # of Dives: 500 - 999
    Location: Dubai, AbuDhabi, United Arab Emirates
    676
    302
    I see
    but otherwise button gauges function as reliable as an Spg?
     
    Paul M likes this.
  6. tursiops

    tursiops Marine Scientist and Master Instructor ScubaBoard Supporter

    # of Dives: 2,500 - 4,999
    Location: U.S. East Coast
    11,674
    9,571
    Hmmm.....I'm guessing "d-rings"
     
    RayfromTX likes this.
  7. Paul M

    Paul M Contributor

    # of Dives: 200 - 499
    Location: Waterloo, ON
    187
    162
    Mine are.

    ...and having a SPG on a 6in hose has two connections just as having mini spg and tranmitters connected to the reg creates two connections.
    ...one could also say that an spg dangling from a 6in hose can entangle easier than a tiny 3/4in button guage or 2.5in transmitter.
     
    hedonist222 likes this.
  8. bradymsu

    bradymsu ScubaBoard Supporter ScubaBoard Supporter

    # of Dives: 1,000 - 2,499
    Location: Grand Rapids, Michigan, USA
    263
    100
    No. Button gauges don't belong on sidemount tanks. Button gauges are difficult to see underwater. People typically put them on their first stages when they are using a transmitter to be able to quickly view their gas pressure on land without having to connect to their computer. Of course this isn't a law and divers are free to do whatever they want with their gear. But if you're diving sidemount for a course, it would be common for the instructor to advise either using a SPG or a transmitter, not both, and not button gauges.
     
    DogDiver likes this.
  9. Paul M

    Paul M Contributor

    # of Dives: 200 - 499
    Location: Waterloo, ON
    187
    162
    Our TDI/IANTD Cave instructor, with decades of experience exploring and training, had no concerns with our setup during his inspection of all of our gear on day one of training.
    The numbers on these button gauges are the same size text (and easy to read) as much of the text on the Perdix. They are a back up. If they are ever 'needed' I am already exiting, just the same as I am forced to exit if my primary light fails and I am using a small backup light. The dive is over.
    Still comforting to see how much air you have.
     
  10. Scuba Client

    Scuba Client Banned

    # of Dives: 500 - 999
    Location: Australia
    516
    67
    I think you already understand the negligent handling of stages. Piranha Dive Manufacturing has 4 inch SPG hoses.
     

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