BAROMETERS
Weather Ball Barometer
Torricelli (1608 – 1647) proved that air pressure was subject to variations and in 1643 he devised the first barometer. Goethe, the famous German playwright, who enjoyed scientific experiments, later developed his own simple, but effective barometer using the principles established by Torricelli.
This barometer is based on Goethe’s design. The Weather Ball Barometer will indicate changes in air pressure quickly and accurately. The ball is filled with colored distilled water. Once filled the air trapped inside the ball is no longer subject to variations in atmospheric pressure. The liquid in the indicator tube, however, remains open to the atmosphere and is directly affected by atmospheric pressure. When atmospheric pressure rises the liquid in the indicator tube is pushed down and an improvement in the weather can be anticipated. When air pressure falls the greater pressure inside the weather ball causes the liquid in the indicator tube to rise indicating that a deterioration in weather can be expected. Comes with full instructions.
Height: 7½”
Ball Diameter: 4″
Dial Barometer
Dial Barometer for classroom, lab or industrial use.
Large, clear dual-scale barometer in hPa (hecto Pascal) and mm (millimeter mercury) on a 4″ dial which is easy to read from a distance. Accuracy of ±3 to 4 hPa. Wall mounts.
Dimensions: 4″ Diameter x 1″ Width
Weight: 2.6 oz (74 g)
Bluetooth Relative Humidity / Temperature / Pressure Logger
Records up to 16,000 data points per parameter with date/time stamps in either metric or imperial units of measure.
A compact design with the convenience of Bluetooth® streaming to a smartphone App for data storage and sharing. Once the dataset is complete, there is no need to attach the device to a computer to retrieve comprehensive reports. Simply download a full-color graphic report to the phone app wirelessly and e-mail to any computer for printing or further analysis in Excel.
You can also view a quick summary of data recordings anytime on the app. The free Android or iOS app communicates with up to 3 loggers simultaneously. Humidity, temperature, and barometric pressure cycle automatically on the large LCD screen while Hi/Low alarms are clearly indicated at a distance by the color-coded bright LED light on the housing. An optional audible alarm matches this warning from the phone. Quickly view Min/Max at any time by pushing a button on the device without interfering with data logging.
Comes with a CR2 Lithium battery that will power the unit for approximately 72 days. Freestanding or wall mount with either flip-out tab or built-in magnet. EN12830:2018, GMP, GLP compliant.
Dimensions: 3” x 2” x 1” (78 x 50 x 23 mm)
Weight: 2.3 oz (66 g)
*Certification Option
N.I.S.T. traceable Certificate of Compliance available at additional cost (Select option above).
Dimensions: 3” x 2” x 1” (78 x 50 x 23 mm)
Weight: 2.3 oz (66 g)
| Range | Resolution | Accuracy | |
| Temperature: | -22 to 158°F -30 to 70°C | 0.1°F/C | ±1.0°F ±0.5°C |
| RH: | 0.1 to 80% | 0.1% | ±3% (@25°C & 10 to 80% RH) otherwise ±5% |
| Barometer: | 300 to 1100 hPa 8.9 to 32.5 inHg | 1 hPa 0.1 inHg | ±3 hPa (0 to 60°C) ±5 hPa (-20 to 0°C) |
Advanced Mini Environmental Quality Meter (12 Parameters)
These meters are light weight, tiny in size with simple, one-hand, operation. They are perfect for scientists, agricultural specialist, facilities managers, HVAC professionals, home inspectors, field technicians, health and safety personal, hazmat crews, outdoor enthusiasts, educators, and coaches … all of whom need accurate information to properly access environmental conditions and make crucial decisions.
Reads air speed in addition to the wide selection of environmental parameters detailed above. Accurately measures liquid and solid temperatures using the optional Pt 1000 penetration probe. Will sense airflow as low as 0.4 m/s with an accuracy of ±3% (4% >20 m/s). Replaceable snap-in anemometer vane is available. Features min/max, hold, a backlight and come complete with a wrist strap, carry pouch, and button cell battery providing at least 40 hours of continuous use.
- 5 year warranty, CE, RoHS
- Wind Speed Air Temperature Air Volume
- Relative Humidity (RH) Wind Chill Heat Stress Index
- Dew Point Wet Bulb PT 1000 ohm (with Optional Probe)
- Barometric Pressure Altitude Visible Light
| Unit of Measure | Range | Resolution | Accuracy |
|---|---|---|---|
| Wind Speed: | 80 to 3937 ft/min 0.4 to 20.0 m/s 1.4 to 72.0 km/h 0.9 to 44.7 mile/h 0.8 to 38.8 knots | 1 ft/min 0.1 m/s 0.1 km/h 0.1 MPH 0.1 knots | ≤20 m/s: ±3% FS >20 m/s: ±4% FS |
| Air Temperature: | 32 to 122°F 0 to 50°C | 0.1°F 0.1°C | ±2.5°F ±1.2°C |
| Air Volume: | 0.024 to 36000 CMM 0.847 to 1271300 CFM | 0.001 / 0.01 / 0.1 / 1 CMM 0.001 / 0.01 / 0.1 / 1 / 10 (x10) / 100 (x100) CFM | |
| Relative Humidity: | 10 to 95% RH | 0.1% RH | <70% RH: ±4% RH ≥70% RH: ±(4%RDG +1.2% RH) |
| Wind Chill: | 15 to 112°F -9 to 44°C | 0.1°F 0.1°C | ±3.6°F ±2.0°C |
| Heat Stress Index: | 32 to 212°F 0 to 100°C | 0.1°F 0.1°C | ±3.6°F ±2.0°C |
| Dew Point: | -13 to 120°F -25 to 49°C | 0.1°F 0.1°C | Calculated from the humidity/ temperature value |
| Wet Bulb: | 22 to 120°F -5 to 49°C | 0.1°F 0.1°C | Calculated from the humidity/ temperature value |
| PT 1000 ohm Probe (optional): | 14 to 212°F -10 to 100°C | 0.1°F 0.1°C | ±2.5°F ±1.2°C |
| Barometric Pressure | 10.0 to 999.9 hPa 1000 to 1100 hPa 7.5 to 825.0 mmHg 0.29 to 32.84 inHg | 0.1 hPa 1 hPa 0.1 mmHg 0.01 inHg | ±1.5 hPa ±2 hPa ±1.2 mmHg ±0.05 inHg |
| Altitude | -6000 to 30000 ft -2000 to 90000 m | 1 ft 1 m | ±50 ft ±15 m |
| Visible Light | 0 to 2200 Lux 1800 to 20000 Lux 0 to 204.0 FC 170 to 1860 FC | 1 Lux 10 Lux 0.1 FC 1 FC | ±5%rdg ± 8DGT |
