SCUBAPRO-UWATEC Chromis User Manual Download

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Chromis

User Manual

Summary of Contents for Chromis

Page 2: ... not calculate correctly Diving at oxygen partial pressures higher than 1 6bar corresponding to a depth of 67m 220ft when breathing compressed air is extremely dangerous and could lead to serious injury or death Chromis dive instrument is a personal protective equipment in compliance with the essential safety requirements of the European Union directive 89 686 EEC RINA SpA Via Corsica 12 I 16128 G...

Page 3: ...g a dive 17 3 2 7 Using the Stopwatch 18 4 Chromis as a dive computer 19 4 1 Settings at the dive mode 19 4 1 1 Dive mode at surface 19 4 1 2 Surface interval counter 20 4 2 Gas settings 21 4 2 1 Set gas 21 4 2 2 Nitrox reset time 22 4 2 3 Desaturation reset 22 4 3 SCUBA settings 23 4 3 1 Maximum dive depth alarm 23 4 3 2 Maximum dive time alarm 23 4 3 3 Setting the Micro Bubble level 23 4 3 4 Set...

Page 4: ... 3 Prohibited altitude 35 4 7 5 4 Decompression dives in mountain lakes 36 4 7 6 Warnings and alarms 36 4 7 6 1 CNS O2 75 36 4 7 6 2 No Stop time 2 minutes 36 4 7 6 3 Entering decompression 36 4 7 6 4 Ascent rate 37 4 7 6 5 MOD ppO2 38 4 7 6 6 CNS O2 100 38 4 7 6 7 Missed decompression stop 38 4 7 6 8 Low battery 39 4 8 GAUGE mode 39 4 9 APNEA mode 40 4 10 SWIM mode 41 5 Chromis PC interface 41 5 ...

Page 5: ...5 English CHROMIS USER MANUAL ...

Page 6: ...trument that can accompany you during your underwater adventures while providing you with accurate depth time and decompression information On the surface its size makes it your ideal everyday companion With features such as wake up alarm dual time stop watch and altimeter Chromis can tackle almost every possible task The buttons allow operating functions access menus and setting changes while on ...

Page 7: ...We strongly recommend having the battery change operation be carried out by your SCUBAPRO dive retailer See chapter Replacing the battery in this manual for information on how to replace the battery 2 OPERATION MODES The reference point for any description of Chromis as a watch is the main time of day display This is the display in which the current time is shown on the middle row The upper row sh...

Page 8: ...er reading when worn at the wrist against the skin the reading is influenced by body heat The function of the buttons on the surface is summarized in the table below and explained in detail on the following sections TIME DATE Altitude meter Logbook pages SEL DOWN DOWN DOWN DOWN DOWN DOWN DOWN UP UP UP UP UP UP UP ESC ESC ESC ESC ESC ESC ESC ESC ESC ESC ESC SEL SEL SEL SEL Planner pages Dive settin...

Page 9: ... to previous menu or cancel the setting 3 1 Clock setting functions By pressing once the UP button from the main time and date display and selecting SET menu by pressing SEL button you will get into clock settings See chart below The different sub menu functions are described in later chapters SET SET alarm clock SET UTC SET UTC2 DUAL TIME SET date SET Sound off CHECK battery state SET time and 24...

Page 10: ...pared to Greenwich 0 Meridian This feature is practical when travelling through different time zones By pressing SEL the hours will start blinking You may edit them with or buttons in a range of 14h 13h By pressing SEL the minutes will start blinking and you may edit them with or buttons in 15 minute steps The UTC setting will be confirmed by pressing the SEL button 3 1 3 Setting the time and 24h ...

Page 11: ...anged by pressing or buttons in 24h mode the first digit are days in 12h mode the month is first By pressing the SEL button the next digits start blinking and they may then be edited by pressing or button Again by pressing the SEL buttons the year after the dot starts blinking The date will be confirmed by pressing the SEL button 3 1 6 Setting the sound off silent mode ON OFF ALR with ALR alarm an...

Page 12: ...s menu The intelligent battery algorithm will limit some functions towards the end of the battery lifetime See the table below for the status and functions Indicator in battery status display At other displays Battery status Function limitations 00000 Fresh battery none 0000_ Battery ok for diving none 000__ Battery ok for diving none 00___ Battery symbol Weak battery change to fresh Backlight not...

Page 13: ... dots change the battery to a fresh one before making any new dives 3 2 Menus and functions at the surface By simply pressing buttons or from the time of day display you can scroll through the various menus in Chromis The diagram below shows the sequence of the menus Note that when you first reach a menu you are not yet inside it you must press the SEL button to enter the actual menu When the actu...

Page 14: ...s SEL DOWN DOWN DOWN DOWN DOWN DOWN DOWN UP UP UP UP UP UP UP ESC ESC ESC ESC ESC ESC ESC ESC ESC ESC ESC SEL SEL SEL SEL Planner pages Dive settings menus Clock settings menus STOP watch function LOG Planner STOP watch DIVE mode SET 3 2 1 Checking the Altitude ...

Page 15: ... selected from the Dive mode menu Units 3 2 2 Reading the Logbook You can check the main information about your dives in the Logbook by pressing SEL when in the log menu The first page shown is the dive history On the display above the Chromis has 5 dives and total of 4 hours of diving in the Logbook with the deepest dive at 19 0 meters and a longest dive time of 58 minutes 3 2 3 SCUBA log s By pr...

Page 16: ...t session is shown On the middle row the dive time is shown in SECONDS The max depth is shown at the middle row right By pressing the or buttons the dives in the current session can be scrolled NOTE APNEA dives are always shown always in seconds The maximum time before rollover is 199 seconds 3 2 5 Surface exercises Chromis has a swim mode The log appears as SE Surface Exercise for exercises done ...

Page 17: ...ons you can set the time in 15 minutes increments The prohibited altitude is shown at middle row and by increasing the surface interval the allowed limit will get to maximum level 4 You may read more about the altitude diving with Chromis in the chapter Altitude diving In case Chromis is displaying the no dive warning the duration of the warning itself is displayed as recommended surface interval ...

Page 18: ...on the stopwatch will be activated In the first display the stopwatch shows the status which can be stop run or lap By activating the stopwatch first time the display will be as shown above Press button and the stopwatch starts counting and shows actual state which is run By pressing button again the stop watch stops counting and shows actual state stop The counted time will stay on the display St...

Page 19: ... access various menus dedicated to diving and customize various settings to your liking The dive computer functions of Chromis on the surface include among others setting the oxygen concentration for Nitrox diving setting the MB level of the decompression algorithm setting various warnings and personal preferences To reach any of these functions Chromis must be in Dive surface mode display This ca...

Page 20: ...lay may appear as shown below Suface interval time at top row Remaining desaturationtime at middle row From here by pressing the SEL button and scrolling with the or buttons you access to a loop of menus which are all related to diving 4 1 2 Surface interval counter After a dive the Chromis shows the surface interval from the latest dive The surface interval counter counts until desaturation is co...

Page 21: ...n By pressing the SEL button in this display the oxygen content of the Gas starts blinking By pressing buttons you may scroll the value from 21 up to 100 By pressing SEL the content is confirmed and the ppO2 starts blinking By pressing or buttons you may select the value from 1 00 bar 1 00 bar to 1 30 bar depending on the O2 in the gas mix up to 1 60 bar It is possible to disable the MOD setting d...

Page 22: ...nd this may lead to serious injury or fatal injury Do not reset desaturation without a solid purpose When Chromis is still counting down the desaturation some menu changes are not possible In case the user decides to reset the desaturation the safety code 313 must be given This procedure secures unwanted resetting and the desaturation reset will be stored to a memory At the next dive log the desat...

Page 23: ...up to 100 meters 20 330 feet in 1m 5ft steps The selection is confirmed by pressing SEL button 4 3 2 Maximum dive time alarm By pressing SEL button the function starts blinking and you may select on or off by pressing or buttons By pressing SEL button in this menu the time value starts blinking By pressing or buttons the value can be selected from 5 up to 195 minutes in 5 minutes steps The selecti...

Page 24: ...ed 4 3 5 Selecting the salt ocean or fresh water Chromis measures pressure and converts depth from it by using the water density as a constant 10m 33ft depth at salt water corresponds approximately to 10 3m 34ft at fresh water NOTE This setting will adjust the depth on all modes scuba gauge and APNEA By pressing SEL button at this menu the fresh or salt setting at the bottom row starts blinking Yo...

Page 25: ...the second it will be masked by the continuous alarm and you cannot hear the first one 4 4 2 Setting the depth incremental alarm By pressing the SEL button in this menu the incremental mode starts blinking By pressing or the you may scroll between the direction of the alarm or disable it with selections off dn down up or both After confirming the selection with SEL button the alarm depth starts bl...

Page 26: ...ed alarm By pressing SEL at this menu the function starts blinking and by pressing you may select between enabling or disabling the alarm with on off setting After confirming by pressing the SEL button the ascend speed starts blinking By pressing or buttons you may select the value from 0 1 to 5 0 meters second 1 15 feet second By pressing SEL the value will be confirmed and the function starts bl...

Page 27: ... and the count stroke threshold starts blinking A big threshold setting will detect only large movement as a stroke too small setting may detect too many strokes you must test and adjust this according to your style By pressing or buttons the value can be selected from 5cm 2inch to 40cm 16inch By pressing the SEL button the values are confirmed 4 6 Algorithm selection DOWN DOWN DOWN UP UP UP ESC E...

Page 28: ...ay data Long press when SWIM mode active manual start stop of the SWIM mode Long press in GAUGE mode reset average depth counter Right down Short press in SCUBA and GAUGE mode start stop timer Long press in SCUBA and GAUGE mode reset the timer if it is stopped Long press in APNEA mode manual start and end the dive 4 7 1 Display information Upon immersion Chromis will automatically start to monitor...

Page 29: ...is displays the most important information with largest font at the middle row current depth right the elapsed dive time left and the no stop or decompression information bottom row In addition Chromis utilizes the top row to display additional information regarding the dive By pressing button in the display is shown in sequence 1 PDIS depth If pending 2 Maximum depth only if 1m 3ft ascent detecte...

Page 30: ...microbubbles in the venous blood circulation Chromis has been equipped with an enhanced SCUBAPRO algorithm named ZH L8 ADT MB to reduce the formation of these microbubbles This enhanced algorithm allows the user to choose a level of conservatism over and in addition to the worldwide proven safety record of the standard ZH L8 ADT algorithm There are five levels of added conservatism or MB levels fr...

Page 31: ...w this zone the PDIS counter will be deactivated and Chromis calculates a new PDIS depth If decompression is already required this information remains at the bottom row In that case the PDIS counter is not shown but only the PDIS symbol and depth are blinking at the top row for the 2 minutes that are recommended for stay at the PDIS zone WARNING Even when performing a PDI stop you still MUST perfo...

Page 32: ...ssion sickness Do not dive when the computer is in SOS mode The display shows the same information as in presence of desaturation but at the top row SOS is displayed 4 7 3 1 Desaturation reset Chromis allows you to reset the desaturation of the computer Any tissue saturation information from a recent dive will be reset to zero and the computer treats the next dive as a non repetitive dive This is ...

Page 33: ...so be turned OFF Please refer to chapter Gas settings for more information on how to change this setting 2 Against long exposure effects Chromis tracks the exposure by means of the CNS O2 clock At levels of 100 and higher there is risk of long exposure effects and consequently Chromis will activate an alarm when this level of CNS O2 is reached Chromis can also warn you when the CNS O2 level reache...

Page 34: ...de is indicating the remaining amount of nitrogen The interval from the last dive is shown at the middle row with the text INT at the bottom row The altitudes where the diver may travel are shown at the first page of the planner menu The prohibited altitude the altitude which Chromis has computed to be incompatible with your current nitrogen saturation levels are levels above the second altitude a...

Page 35: ...it detects a sufficient drop in pressure it does the following it indicates the new altitude range and if applicable the prohibited altitude range it indicates the desaturation time which in this case is an adaptation time to the new ambient pressure If a dive is started during this adaptation time Chromis considers it as a repetitive dive since the body has residual nitrogen 4 7 5 3 Prohibited al...

Page 36: ...hem does not represent an immediate risk It is up to you to decide which ones you would like to be active and which ones not The available warnings are 4 7 6 1 CNS O2 75 Chromis tracks your oxygen uptake via the CNS O2 clock If the calculated value of CNS O2 reaches 75 Chromis will emit a sequence of audible beeps for 12 seconds and the symbol will be blinking in the top right corner The blinking ...

Page 37: ...ugh to minimize the effect of continued loading on your tissues The pressure reduction that the body can tolerate without significant microbubble formation is higher at depth than it is in the shallow water The key factor is not the pressure drop by itself but rather the ratio of the pressure drop relative to the ambient pressure This means that the ideal ascent rate at depth is higher than it is ...

Page 38: ...o you can see by how much you have exceeded it In addition Chromis will beep continuously Both the blinking of the MOD value and the beeping will continue for as long as you stay deeper than the MOD 4 7 6 6 CNS O2 100 WARNING When the CNS O2 reaches 100 there is danger of oxygen toxicity Start procedure to terminate the dive Chromis tracks your oxygen uptake via the CNS O2 clock If the calculated ...

Page 39: ...ngs and alarms other than the low battery alarm are turned off WARNING Dives in gauge mode are performed at your own risk After a dive in gauge mode you must wait at least 48 hours before diving using a decompression computer When on the surface in gauge mode Chromis will show neither the remaining desaturation time nor the CNS O2 value It will however display a surface interval up to 48 hours and...

Page 40: ... 10 hours of log data can be stored in APNEA mode In APNEA mode it is also possible to start and stop the dive manually by press and hold the button This way you can use Chromis for static APNEA dives where normal dive start depth of 0 8 meters will not start a new dive As with gauge mode Chromis doesn t carry out any decompression calculation You can only switch to APNEA mode if the computer is c...

Page 41: ...ce It will switch automatically to active dive mode when immersed deeper than 3m 10ft In SWIM mode and during surface exercise Chromis displays the count of kicks on the top row the elapsed time on the middle row and the converted distance on the bottom row 5 CHROMIS PC INTERFACE 5 1 Cradle accessory Communication between Chromis and a PC Mac is possible only with a cradle A cradle can be bought f...

Page 42: ...ere the cradle is connected Extras Options download Select the COM port that is used for Chromis cradle 4 Place the Chromis on the cradle 5 2 1 Download dive profiles From LogTRAK by selecting Dive Options Download Dives you can transfer the Chromis Logbook to your PC or Mac There are three main views each showing a specific part of your dive logs Profile showing the graphical data of the dive Det...

Page 43: ...r supply CR2430 lithium battery Life of the battery Estimated 2 years or 300 dives which ever comes first Actual battery life depends on the number of dives per year the length of each dive the water temperature and the usage of backlight 6 2 Maintenance The depth accuracy should be verified every two year and can be done by an authorized SCUBAPRO dealer Aside from that Chromis is virtually mainte...

Page 44: ... battery removal After replacing the battery you must set the date and time O ring must be replaced each time when Chromis is opened The screws must be adjusted to correct torque 6 4 Warranty Chromis has a two year warranty covering defects in workmanship and functioning The warranty only covers dive computers which have been bought from an authorized SCUBAPRO dealer Repairs or replacements during...

Page 45: ... or Nitrox Nitrox A breathing mix made of oxygen and nitrogen with the oxygen concentration being 22 or higher In this manual air is considered as a particular type of Nitrox NO FLY Minimum amount of time the diver should wait before taking a plane No stop time This is the time that a diver can stay at the current depth and still make a direct ascent to the surface without having to perform decomp...

Page 46: ...ode The result of having completed a dive without respecting all mandatory decompression obligations Stopwatch A stopwatch To time certain steps of the dive UTC Universal Time Coordinated refers to time zone changes when traveling ...

Page 47: ...after diving 35 Gauge mode 39 Logbook 15 41 Maintenance 43 MB levels 30 45 Microbubbles 30 45 MOD 19 38 45 Mountain lakes 36 No dive warning 31 Nitrox 22 33 45 Nitrox reset 22 No fly time 20 34 45 Oxygen concentration 33 Oxygen partial pressure 33 PC interface 41 ppO2max 45 Safety stop timer 30 Log TRAK 42 SOS mode 32 46 Stopwatch 18 Surface interval 20 26 45 Technical information 43 Time of day 8...

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