Erik_SG
Støttemedlem
Omega Seamaster-tråden
- Trådstarter topale
- Opprettet
SpinDoctor
Støttemedlem
Har satt Seamasteren på en gammel Citizen-reim i førsommerværet, etter at jeg fant ut at reimen jeg egentlig ville ha, en 98000085, ikke egentlig passer kassen. Er det noen som har en Isofrane eller en Tropic i god kvalitet til salgs til en stakkar? 
Kjøpte meg en tropic fra Zuludiver, som jeg syns passer meget bra til klokka. Hvilken gummi bruker folk til Seamasterne sine? Er det noen som har den (for min del) veldig spesielle/sjeldent sette double ridge gummien med den drøyt svære claspen? Jeg syns den ser veldig organisk/biologisk styggpen ut, og klarer ikke å bestemme meg for om jeg liker den. Hadde vært kult å se om noen av dere bruker den!
Hirsh naturgummi, fin reim.
Citizen
Det ligger en reim jeg har lyst på her: Selges - Hirsch EXTREME Natural Rubber Watch Strap i 20mm | TIDSSONEN
Citizen
Det ligger en reim jeg har lyst på her: Selges - Hirsch EXTREME Natural Rubber Watch Strap i 20mm | TIDSSONEN
Citizen-reim passer bra til diver, uansett! Den som ligger ute på markedet blir derimot litt for brutal for meg. Jeg hadde reimen under (98000144) til PO-en min, og jeg vet at det finnes en tilsvarende (98000085) som mange bruker på SMP, men så vidt jeg har fått med meg på nett, så passer den egentlig ikke helt til baretthullene på kassen. Barettene må lirkes og bøyes, og da tør jeg ikke bruke den i vann!
Den som ligger ute på markedet blir derimot litt for brutal for meg. Jeg hadde reimen under (98000144) til PO-en min, og jeg vet at det finnes en tilsvarende (98000085) som mange bruker på SMP, men så vidt jeg har fått med meg på nett, så passer den egentlig ikke helt til baretthullene på kassen. Barettene må lirkes og bøyes, og da tør jeg ikke bruke den i vann!
Klokken er ikke fullstendig tett. Heliums molekyler er mindre og trenger seg forbi pakningene. Det er forskjell på hydrostatisk differential trykk i vann og inni en dykkerklokke med trimix gass.
Problemet skjer i trykk kammeret.
Når He trenger seg inn i klokken, bygger seg trykket inni kassen og glasset popper ut når kammerets trykket senker seg.
Det skjer ikke med Ploprof eller Seiko sin 1000m: fordi He trenger seg ikke inn i kassen.
"These underwater habitats were pressurized living quarters for divers, providing a mix of breathing gas composed mainly of oxygen, nitrogen, and helium. The Sealabs included a sleeping area, bathroom, and living area and ensured that divers could spend multiple days at a time underwater performing all necessary tasks without having to make time-consuming, dangerous ascents on a regular basis."
"During ascents in diving chambers, it was noted that from time to time the crystal from one of the divers’ watches would pop off with a loud bang.
This was attributed to helium buildup in the case, which makes its way in via diffusion by penetrating the rubber gaskets.
As the diver ascends in the chamber, the gas pressure outside of the watch decreases, with the pressure inside of the watch remaining higher. Once the difference is too great, the pressure buildup causes the crystal to pop off the watch because crystals were generally simply friction fitted on dive watches of the 1960s."
Deeper, Further, Faster: Why Some Dive Watches Have Helium Escape Valves - Reprise - Quill & Pad
Humans have long had a fascination with the depths of the ocean, striving to go ever deeper, ever further, and ever faster by pushing the limits of the human body, technology, and advancing modern science. But like all things, we are often faced with limits. Enter the helium escape valve.
quillandpad.com
Problemet skjer i trykk kammeret.
Når He trenger seg inn i klokken, bygger seg trykket inni kassen og glasset popper ut når kammerets trykket senker seg.
Det skjer ikke med Ploprof eller Seiko sin 1000m: fordi He trenger seg ikke inn i kassen.
"These underwater habitats were pressurized living quarters for divers, providing a mix of breathing gas composed mainly of oxygen, nitrogen, and helium. The Sealabs included a sleeping area, bathroom, and living area and ensured that divers could spend multiple days at a time underwater performing all necessary tasks without having to make time-consuming, dangerous ascents on a regular basis."
"During ascents in diving chambers, it was noted that from time to time the crystal from one of the divers’ watches would pop off with a loud bang.
This was attributed to helium buildup in the case, which makes its way in via diffusion by penetrating the rubber gaskets.
As the diver ascends in the chamber, the gas pressure outside of the watch decreases, with the pressure inside of the watch remaining higher. Once the difference is too great, the pressure buildup causes the crystal to pop off the watch because crystals were generally simply friction fitted on dive watches of the 1960s."
Deeper, Further, Faster: Why Some Dive Watches Have Helium Escape Valves - Reprise - Quill & Pad
Humans have long had a fascination with the depths of the ocean, striving to go ever deeper, ever further, and ever faster by pushing the limits of the human body, technology, and advancing modern science. But like all things, we are often faced with limits. Enter the helium escape valve.
Kan du forklare meg hvorfor He ikke slipper forbi denne "L-pakningen" du referer til i trykkammer med trimix gass?
I forrige post så skrev jeg "dykkerklokke" siden det er det vi kaller det på norsk. Jeg antok at alle visste det var snakk om diving bell og ikke en diving watch
Fordi tetningen er 100% : det er det som er sagt i mange artikler og det ble tydeligvis bevist av Omega og Seiko i mange år.
THE HISTORY OF SEIKO DIVER'S WATCHES | SEA | Prospex | SEIKO WATCH CORPORATION
Introduced in 1965, Seiko's diving watch integrated innovative technology that has been chosen by divers and adventurers globally. Seiko's diving watch has become a global standard as a result 50 years of innovation. What is the history behind this timepiece? SEIKO WATCH CORPORATION.
www.seikowatches.com
"In 1975, Seiko produced a 600m diver’s watch with a titanium one-piece case and an outer case protector. It used a specially developed L-shaped gasket to make it impervious to helium without the need for an escape valve."
SEIKO - PROFESSIONAL DIVER'S 1000M
#gphg2023 Pre-selected watch - Grand Prix d'Horlogerie de Genève 2020
@Sponon
Hvis man trenger ikke å skifte dato og tid, fungerer det.
Men som han sier, det er noe som "kan" bli nødvendig for en del prof. dykkere.
"In reality, knowing the inevitability of helium making its way into a watch, most saturation divers simply unscrew their crowns as they are initially put under pressure (an hours long process known as “blow down”) to ensure they can later operate their crowns and change the time or date, a practice which would be impossible if the watch weren’t equalized. Considering how often diving support vessels transit across time and date lines, being able to set the watch in sat is crucial. This also means watches designed to not need a helium release valve, thanks to their helium-tight construction, like Seiko’s saturation-ready divers, are only useful if they don’t need to be set, which, as I’ve just noted, is something that happens all the time."
Hvis man trenger ikke å skifte dato og tid, fungerer det.
Men som han sier, det er noe som "kan" bli nødvendig for en del prof. dykkere.
"In reality, knowing the inevitability of helium making its way into a watch, most saturation divers simply unscrew their crowns as they are initially put under pressure (an hours long process known as “blow down”) to ensure they can later operate their crowns and change the time or date, a practice which would be impossible if the watch weren’t equalized. Considering how often diving support vessels transit across time and date lines, being able to set the watch in sat is crucial. This also means watches designed to not need a helium release valve, thanks to their helium-tight construction, like Seiko’s saturation-ready divers, are only useful if they don’t need to be set, which, as I’ve just noted, is something that happens all the time."
Confessions Of A Commercial Diver: The Final Word On The Helium Release Valve
Everything you ever wanted to know about the helium release valve, including its uses and common misconceptions.
www.ablogtowatch.com
Hvorfor utviklet Omega He-ventil i ettertid da hvis det stemmer det som kildene du refererer til stemmer?
Og hvorfor, hold på hatten, kom ingen på å bare skru ut kronen for å unngå at glasset poppet ut? Edit, ser nå du nevnte akkurat dette
Og hvorfor, hold på hatten, kom ingen på å bare skru ut kronen for å unngå at glasset poppet ut? Edit, ser nå du nevnte akkurat dette
Jeg vil tenke på at Omega gikk senere til He ventil for å gjør det mer praktisk for dykkerne:
"Considering how often diving support vessels transit across time and date lines, being able to set the watch in sat is crucial."
Det betyr at hvis man ha en automatisk He ventil, kan man lettere bytte tid og dato i trykk kammeret.
Som forklart, kan man ikke gjør det med en 100% tett kasse uten å risikere at glasset popper ut når man ha overtrykk i kammeret.
Som han forklarer også i artikkelen er det mer praktisk å ha en automatisk He ventil enn en manual.
"Of course, there is more than one way to skin a cat, and other brands have figured other methods of letting helium escape from inside their watches, most notably in Omega’s literal case with its manual HRV, seen on the Seamaster and Planet Ocean series, which operates by means of another screw-down crown that is designed to be left open during decompression to achieve the same effect. However, a system like Omega’s only works if the diver remembers to open the HRV. Sat divers I’ve spoken to will tell you it’s all too easy to forget to open these little crowns, an expensive mistake to make. Spitting truth, Paul Scurfield, saturation diver and owner of Scurfa Watches, said, “The manual ones are pretty much useless as they (the HRV specific crown) can be pushed back in (by external pressure during “blow down”) and take a seal. They can also fail when unscrewed as the rubber gaskets can be pushed outwards (by internal pressure during decompression) into the crown/cover and also take a seal.” There you have it."
Bortsett fra Ploprof 600m så har vel ikke Omega hatt en ren dykkeklokke (purpose only) frem til Ploprof 1200m ble lansert i 2009 eller hva det var. Seamaster diver og Planet Ocean regnes ikke som rene dykkerur. Det er badeklokker til klokkeentusiasten
Omega burde tenkt på 99.9% av kundegruppen sin og droppet He-ventil på alt annet enn ploprof.
Omega burde tenkt på 99.9% av kundegruppen sin og droppet He-ventil på alt annet enn ploprof.