The JDC Xplorer 4 Handheld Weather Instrument is on sale now. Buy now for Christmas - makes a great gift. Only $139.99!
The JDC SKYWATCH Xplorer 4 is simple to use. Press one button, and instant readings are at your fingertips. Designed for the consumer and professional in Switzerland, the Xplorer 4 is built to demanding specifations and engineered to provide a lifetime of accurate and dependable use.
XPLORER FEATURES:
- Dimension: 3.5 x 1.5 x 0.75 in, 2 oz. (41 x 93 x 17 mm, 50 g)
- One button operation
- EL Backlight
- Completely sealed; internal sensors
- Weatherproof (can be submerged 6 feet)
- Replaceable Lithium battery (included and installed)
- Stainless steel back
- Auto-off after one minute (can be disabled to remain on)
- Included lanyard
- One year warranty
- Designed in Switzerland
WIND SPEED:
- Balanced impeller is integrated into wind meter
- The impeller is magnatized, producing a magnetic field when rotating which is measured internally
- Damage to the impeller is unlikely due to the small opening, but repair can be performed
- Units: km/h, mph, m/s, fps, knots
- Range: Max 94 mph (150 km/h)
- Resolution: 0.1 unit
- Precision: +/- 3%
- Measuring cycle: Twice per second
TEMPERATURE:
- Internal thermometer is attached to the stainless steel back
- Temperature adjusts quickly, although drastic temperature changes may require several minutes for accuracy
- Temperature is read quickly by touching the back to an object of the same temperature
- Water temperature is read quickly by submerging the unit briefly
- Units: °F, °C
- Range: -58°F to 212°F (-50°C to 100°C)
- Resolution: 0.1 unit
- Precision: +/- 0.5°F (0.3°C)
- Measuring cycle: Twice per second
DIGITAL COMPASS:
- Xplorer 3 and 4
- Designed to be used in verticle position
- Will display windspeed and compass simultaneously
- Electronic calibration before use ensures absolute precision (easy process)
- Calibration is essential for proper use
- Accurate wind direction can be found in this way....a world exclusive feature!
- Units: Degrees off North
- Range: 0 - 359°
- Resolution: 1 degree
- Precision: +/- 4 degrees
- Measuring cycle: Twice per second
ALTITUDE:
- Altitude is based on an initial set altitude and a change in air pressure (this is true of ALL altimeters)
- Drastic air pressure variance (weather front) will impact altitude readings (usually occurs over 12+ hours)
- Several seconds is needed to adjust to new altitude
- The highest accuracy is acheived when the altitude is properly set, a change in altitude is more than 10 feet, and several seconds are allowed for adjustment
- For example, the Xplorer 4 may be moved from one level of a house to another, and a change of 10 feet will be recorded (standard ceiling height)
- Altitude and air pressure are measured on the same sensor, and adjusting one will adjust the other
- Altitude history is recorded every hour for the past 48 hours
- See instruction manual for more details
- Units: feet, meters
- Range: -2,300 to 29,500 ft (-700 to 9,000 m)
- Resolution: 3 feet (1 meter)
- Precision: +/- 33 ft (10 m)
- Measuring cycle: One second
AIR PRESSURE:
- Air pressure is read in either "relative" or "absolute" air pressure
- Absolute air pressure is a precisely defined measurement, just like temperature
- Absolute air pressure is measured within .10 inHg, and cannot be adjusted
- Relative air pressure is the most common unit used in the US
- Relative air pressure factors out the change in elevation, essentailly calculating the air pressure at sea level
- Relative air pressure is adjusted to reflect current altitude
- Once the relative air pressure is set, if no changes to altitude occur the accuracy is within 0.01 inHg
- The most important factor in changing weather is the change in air pressure
- Rising air pressure indicates better weather, falling air pressure indicates worsenign weather
- With the air pressure history, one can accurately predict future weather
- Air pressure history is recorded every hour for the past 48 hours, although the past 6-12 hours is most important
- See instruction manual for more detail
- Units: inHg, hPa
- Range: 8.86 to 32.50 inHg (300 to 1100 hPa)
- Resolution: .01 inHg (1 hPa)
- Precision: +/- 0.10 inHg (3 hPa)
- Measuring cycle: One second
