Weatherproof and highly accurate, this temperature/relative humidity data logger comes equipped with built-in sensors. With a small exterior sensor diameter, this logger is ideal for use in tight spaces. In addition, the relative humidity sensor provides superior durability in humid environments and is user-replaceable.
Weatherproof and highly accurate, this temperature/relative humidity data logger comes equipped with built-in sensors. With a small exterior sensor diameter, this logger is ideal for use in tight spaces. In addition, the relative humidity sensor provides superior durability in humid environments and is user-replaceable.
A LED light in the communications window of the logger confirms logger operation. In brightly lit areas, it may be necessary to shade the logger to see the LED blink.
Features
Temperature Sensor | |
Operation Range | Internal sensor: -40 to 158°F (-40 to 70°C) |
Accuracy | ±0.45 from -40 to 32°F (±0.25°C from -40 to 0°C) |
Resolution | 0.072°F (0.04°C) |
Response Time (Typical to 90%) | Internal sensor: 10 minutes in air moving 1 m/sec |
Drift | < 0.018°F (0.01°C) per year |
Relative Humidity Sensor | |
Operation Range | 0 to 100% RH, -40 to 158°F (-40 to 70°C) |
Accuracy | ±2.5% from 10% to 90% RH typical to a maximum of ±3.5% including hysteresis at 77°F (25°C) Below 10% and above 90% ±5% typical |
Resolution | 0.05% |
Response Time (Typical to 90%) | 40 minutes in air moving 1 m per second with protective cap |
Drift | <1% per year typical |
General Specifications | |
Operation Range | -40 to 158°F (-40 to 70°C) |
Real-time Clock | ±1 minute per month 32 to 122°F (0 to 50°C) |
Dimensions | 4.0 × 1.5" (10.2 × 3.8 cm) |
Weight | 1.5 oz (57 g) |
Click on a category to view a selection of compatible accessories with the Onset HOBO U23 Pro v2 Temperature/Relative Humidity Data Logger.
Temperature Sensor | |
Operation Range | Internal sensor: -40 to 158°F (-40 to 70°C) |
Accuracy | ±0.45 from -40 to 32°F (±0.25°C from -40 to 0°C) |
Resolution | 0.072°F (0.04°C) |
Response Time (Typical to 90%) | Internal sensor: 10 minutes in air moving 1 m/sec |
Drift | < 0.018°F (0.01°C) per year |
Relative Humidity Sensor | |
Operation Range | 0 to 100% RH, -40 to 158°F (-40 to 70°C) |
Accuracy | ±2.5% from 10% to 90% RH typical to a maximum of ±3.5% including hysteresis at 77°F (25°C) Below 10% and above 90% ±5% typical |
Resolution | 0.05% |
Response Time (Typical to 90%) | 40 minutes in air moving 1 m per second with protective cap |
Drift | <1% per year typical |
General Specifications | |
Operation Range | -40 to 158°F (-40 to 70°C) |
Real-time Clock | ±1 minute per month 32 to 122°F (0 to 50°C) |
Dimensions | 4.0 × 1.5" (10.2 × 3.8 cm) |
Weight | 1.5 oz (57 g) |
Click on a category to view a selection of compatible accessories with the Onset HOBO U23 Pro v2 Temperature/Relative Humidity Data Logger.