| Primary Measurement |
Units |
Resolution |
Accuracy
(+/-) |
Specification Range |
Notes |
| Ambient Temperature |
°F |
0.1 |
0.9 °F |
|
Hermetically sealed, precision thermistor mounted externally and thermally isolated (US Patent 5,939,645) for rapid response. Airflow of 2.2 mph|1 m/s or greater provides fastest response and reduction of insulation effect. Calibration drift negligible.
Thermistor may also be used to measure temperature of water or snow by submerging thermistor portion into material — ensure humidity sensor membrane is free of liquid water prior to taking humidity-based measurements after submersion. |
| °C |
0.1 |
0.5 °C |
-20 to +55 °C |
| Relative Humidity |
%RH |
0.1 |
2 %RH |
10 to 90%
25°C |
Polymer capacitive humidity sensor mounted in thin-walled chamber for rapid, accurate response (US Patent 6,257,074). To achieve stated accuracy, unit must be permitted to equilibrate to external temperature when exposed to large, rapid temperature changes and be kept out of direct sunlight. |
| Heat Index |
°F |
0.1 |
TBD °F |
Refer to stated ranges for temp. and relative humidity. |
Calculated measurement.
Perceived temperature resulting from the combined effect of temperature and relative humidity. Calculated based on NWS Heat Index (HI) tables. (Measurement range limited by extent of published tables) |
| °C |
0.1 |
TBD °C |
| Dew Point |
°F |
0.1 |
TBD °F |
15 to 95 % RH
Refer to stated ranges for temperature sensor |
Calculated measurement.
Temperature that a volume of air must be cooled to at constant pressure for the water vapour present to condense into dew and form on a solid surface. Can also be considered to be the water-to-air saturation temperature. |
| °C |
0.1 |
TBD °C |
| Bluetooth Data Upload |
Utilizes Bluetooth Low Energy (BLE) module.
iOS Device needed to receive uploaded data.
iOS Device must be within range to receive data.
(See Getting Started with your Drop for more info.) |
| Data Storage |
Configurable within App |
| Response Time |
Configurable within App up to 2 seconds. |
| Operational & Storage Temp Range |
Operational: -30 °C to +55 °C, 10 TO 1200 hPa, 0 to 100% RH,
some functionality may be limited or disabled at extremes.Storage: -22.0 °F to 140.0 °F | -30.0 °C to 60.0 °C. |
| Clock & Calendar |
Time and Date is automatically updated when connected to phone |
| Certifications |
CE certified, RoHS and WEEE compliant. Individually tested to NIST-traceable standards |
| Battery |
One CR2032 Battery (included).
The battery life will vary based on usage. For baseline conditions and settings1, the battery will last approximately 6 months.
Battery life will be reduced by:
a) colder conditions
b) more frequent logging rates
c) more frequent update rates
Downloads of large data logs (or firmware updates) are best completed with a fresh battery and in temperatures above 10°C / 50°F.
(1Temperature = 75°F, Logging Rate = 10 minutes, Update Rate = 30 seconds) |
| Environmental |
Sealing: Waterproof (IP67 and NEMA-6).
Shock Resistance: MIL-STD-810Fg, Transit Shock, Method 516.5 Procedure IV |
| Origin |
Designed and manufactured in the USA from US and imported components. Complies with Regional Value Content and Tariff Code Transformation requirements for NAFTA Preference Criterion B. |
| Size & Weight |
2.4 x 1.8 x 0.9 in / 6 x 4.5 x 2.3 cm, 1.2 oz / 34 g |
| Colour Options |
Red | Blue | Tan |
