http://www.dintelligent.com/oregon-scientific-wireless-weather/
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Oregon Scientific BAR800 Slim Wireless Weather Station Brand NEW |  |
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US $71.12 | 3d 21h 58m |
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oregon scientific wireless weather
Are electronic thermometer/hydrometers really more accurate?
I threw out my Oregon Scientific weather kit because whenever i tested it by placing the main thing next to the wireless sensor, there was always a difference in reading by up to two or three degrees in temperature and by 10-15 percent on the humidity.
I was wondering if that was normal because im thinking about picking up another digital one but maybe this time i'll go for something cheaper.
No, both alcohol and digital thermometers have to be calibrated and how well it is done tells how accurate it will be. The same is valid for a hygrometer and, for the matter, a barometer. Usually, the more expensive the instrument, the more accurate it is because the calibration is better done. For example, the top range of a barometer is simply the aviation altimeter that must go through quality assurance that satisfies the aviation authorities and that's not easy, ask me, I am a pilot and aircraftft home builder!
This being said, you will always see a variation in a thermometer depending on where you place it. If it is on a dark wall of your home, don't expect to have the same temperature as the ground, after a cloudless night when much heat radiates back into space. You may see frost on the ground and yet, a few meters above it, on the wall of your home, it shows several degrees above freezing point.
Good luck with your purchase.
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Oregon Scientific BAR800 Slim Wireless Weather Station Brand NEW | |
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US $71.12 | 3d 21h 58m |
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Reactor World Time Digital Men's - 30 Preset Tides - Black Rubber Strap $200 The HEAVY WATER re-writes the book on the ultimate timepiece for ocean adventures. The exceptional design of the stainless steel air-flow case keeps everything comfortable by allowing moisture to evaporate from under the watch. This World Tide model features 30 preset and five programmable locations. Matte Finished Stainless Steel Case Unique "Air Flow" Case Design Digital Display 30 Preset Tide locations programmed until the year 2099 and 5 Customizable World Tide Locations (See Below) Air and Water Temperature Sensor Countdown Heat Timer Multiple Alarms Chronograph Month, Day, Date, Year Unidirectional Rotating Bezel Solid, Forged 316L Stainless Steel Case and Caseback; Extra hard, marine-grade stainless steel permits fine finishing and resists corosion. Caseback is made to provide a superior fit, increased strength and water resistance. Secure screwed-on integrated genuine rubber strap Extra Thick Hardened Mineral Glass Lens; This K1-Hardened Mineral Crystal combines exceptional scratch resistance with unmatched shatter resistance. Electro Luminescent Backlight offers visibility for low-light, night-time and diving visibility Shock Resistant Movement Holder; A special casing helps to protect the already Shock Resistant Japanese Quartz Movement from severe impacts. Square Profile Caseback Seal; Having more surface area than the typical O-Ring seal, this provides a significantly superior water-tight seal. Comes encapsulated in a protective standing metal case and is revealed by rotating the outer case half. The watch comes with an extra-long genuine rubber strap to accomodate a wet-suit with buckle clasp Water Resistant to 200 Meters (660 Feet) 39.6mm Case Width (Approximately 1 1/2") not including the crown 18.4mm Case Thickness (Approximately 3/4") Weight: 119 Grams #R {color:d3d3d3; font-family:arial; font-size:12} World Tide Graph Locations Bodega Bay, CA Santa Cruz Pt., CA Rincon, CA San Clemente, CA San Diego, CA Pensacola, FL Virginia Beach, VA Cape Hatteras, NC Sebastian Inlet, FL San Juan, PR Recife, Brazil Rio de Janiero, Brazil Cap Ferret, France Corpus Christi, TX Durban, South Africa Reunion Island, I.O. Colombo, Sri Lanka Bali, Indonesia Gold Coast, Australia Sydney, Australia Sendai, Japan Enoshima, Japan Miyazaki, Japan Hilo, Hawaii Lahaina, Maui Honolulu, Oahu Hanapepe Bay, Kauai Cabo San Lucas, Mexico Puerto Escondidi, Mexico Dominical, Costa Rica Tide watches are not intended to be used for navigation purposes. Local NOAA tide charts should be used when accurate tide information is necessary. The tide formula used in this watch is intended to predict “relatively” accurate tidal flow information, and its accuracy may vary by location, time of year and weather condition. |
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Casio G-Shock Riseman - Solar, 6 Band Atomic, Altimeter, Barometer, Thermometer $159 The new Casio G-Shock RISEMAN, released by Casio America is the world’s first watch to feature the Multi-Band 6 Atomic Timekeeping Technology. Along with solar-powered technology, the Multi-Band 6 Atomic Timekeeping feature enables the watch to receive time calibration radio signals from six transmitters worldwide — one in the US, two in Japan, and one each in China, Germany and the UK. For superior display accuracy, the signals are received up to six times a day. Inspired by those who challenge high altitudes, the RISEMAN features twin sensors for both pressure and temperature in a shock-resistant case. This new G-SHOCK watch is equipped to measure altitude, barometric pressure as well as air temperature. Also, the RISEMAN features a full range of measurement functions, and boasts a unique three-layer protection structure to protect and enclose the pressure sensor. “The RISEMAN is a perfect example of Casio G-SHOCK’s commitment to both function and technology,”. “Casio G-Shock has been and always will be consummate innovators. We are pleased to be the first to introduce the Multi-Band 6 Atomic Timekeeping technology to the marketplace.” Always on the cutting edge, Casio has improved the sensor-based measurement system. The RISEMAN’s altimeter can record measurements using both the stopwatch and the altimeter simultaneously. This versatile feature can capture recorded time along with changes in altitude, elapsed time, total ascent and descent altitude, and highest and lowest altitude. Capable of measuring altitude at five-second intervals, the watch is able to handle altitude changes over very short intervals of time, a useful function for sports enthusiasts involved in rock climbing, mountain biking, and back country skiing. With the mountain-based athletes in mind, the RISEMAN possesses a smooth back to reduce the gap between the watch and the wrist for a comfortable fit, while the band configuration prevents sweat from gathering. Additionally, the dragon has been chosen as the RISEMAN’s back emblem for its mythical ability to fly by manipulating the weather. Construction: Shock resistance Water resistance: 200 meters Radio frequencies: WWVB (USA): 60 kHz, JJY (Japan): 40 kHz (Fukushima) / 60 kHz (Kyushu), MSF (UK): 60 kHz, DCF77 (Germany): 77.5kHz, BPC (China): 68.5kHz Radio wave reception: Automatic reception (maximum 6 times per day) and manual reception options Barometer: Display range: 260hPa - 1,100hPa (7.65 to 32.45 inHg), atmospheric pressure tendency graph (past 24 hours graph display), atmospheric pressure differential graphic (arrows displaying the latest trends in atmospheric pressure) Altimeter: Display range: -700m – 10,000m (-2,300 to 32,800 ft.), cumulative altitude memory (memory works together with the stopwatch to record elapsed time, cumulative ascent and descent altitudes, highest and lowest altitude recorded); manual altitude memory (up to a maximum of 20 memory sets, with each set recording the altitud |
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Hi, JT here. I recently received a Projection Alarm Clock as a gift and thought that it was just the coolest thing ever. I've started giving them to friends and thought I'd do a little research and put a site together about Projection Clocks and Atomic Clocks. I hope you enjoy!
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