> ELECTRONIC BAROMETER

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SPECIAL MARINE

Specially designed for navigation

Ref.A4010HYGROMETER Identical to the A4000, with:?Precision hygrometer: measures the room’s relative humidity from 15to 95%.?Comfort indicator, calculated according to the recognized standard.?Intermittent display of functions.
time (or temperature)”memo” symbolpressure axisunitactual pressurealarm symbolgale warning systemactual pressureselected focustime axispressure variationgraph Low battery symbol ? Electronic circuit without tropical protection coating. ? Without backlighting. Other common characteristics ? 48-hour pressure memorization, hour by hour. ? Low battery indicator. ? Choice of measuring units: °C, °F, hPa, inHg. ? Separate pressure and altitude calibration. ? Audible ”Bip” each time a valid key is pressed.
Ref. A4000 GR ? Built-in retractable stand or wall mounting with VION’s ”SpecialMarine” wall mounting kit.
Ref. A4000 ? Op. temperature: -10°C to +60°C, ±1°C linearity, 0.1°Cresolution. ? Size: 115 x 140 x 34 mm. 170 g.
The references A4000 and A4010 are available in all of the different colours. ? Barometer: detects even the smallest pressure variation – professional accuracy ±0.5 hPa.? 24-hour clock, marine thermometer. Ref. WMK. ”Special marine” wall-mounting kit delivered with allmodels of the A4000 series. ? ”Special Marine” wall mounting kit (cf page 7).? Night navigation: basic light incorporated.? Low consumption: requires 2 LR03 batteries, average battery life = 1 year.

TESTED BY YVAN BOURGNON

24-hour graphZoom over 12 hoursZoom over 6 hours Live from the Jacques Vabre transat…
Ref. A4000 BR “Here’s the report concerning the VION “special marine”electronic barometer tested during the Jacques Vabretransat race: ? Graph indicating pressure changes over the previous 24 hours.? Positive points: we compared the values with thoseof another barometer that is frequently used by compe-titors and that is renowned for its precision but is also inaccessible dueto its high price: the values were similar within one tenth of a hPa during the whole period of the race… Ease of reading: it’s not necessary to put one’s face right up to it inorder to read it (which is not the case with others). Weight: extremely light: unbeatable. Reliability: in spite of the high humidity rate, the vibrations, it’s like new… Ease of use: no need to read the instruction manual to know how itworks. Zoom: a focused view of the air pressure changes over the previous 6 or 12 hours. ELABORATED FUNCTIONS TO ASSIST DECISION-MAKING ? ”Detect a reversal of the pressure trend”. HIST FUNCTION: immediate recall and visualization on the graph of the minimum and maximum pressure over the last 24 hours.? ”See the evolution of the pressure trend (change of marine watch)”. MEM FUNCTION: with immediate display of a situation stored and visualization on the graph.?
Ref. A4000 NT Points to be improved: the history curve is not easy to understand,it changes regularly, it would be preferable to have a real, roundedcurve. ”Foresee the arrival of low pressure or of an approaching anticyclonic wedge” ALARM FUNCTION:with adjustable sensitivity.? Conclusion: for the next race I’m removing the - - - - - - andreplacing it by the VION. Gale warning system: pressure drop â‰¥ 4hPa within a 3-hour period.? ” Continuous safety: running reserve allowing batteries to be changed withoutloss of information. Page 6Sailing without compromise Page 9 Page 7