Descripción
HOBO by Onset U23-004 External Temperature Data Logger
- Weatherproof housing for use in outdoor or condensing environments
- High accuracy
- Small-diameter external sensor versions for measurements in tight spaces
- Optic USB interface for fast and reliable download
The HOBO Pro v2 Temperature/External Temperature data logger is a weatherproof data logger with an external soil/water temperature sensor on a 6-foot cable useful for situations where just one temperature probe is required. An internal temperature sensor is also included.
The HOBO Pro v2 logger’s environmentally rugged case is designed for years of reliable use in outdoor applications. It has enough memory to record over 42,000 12-bit measurements.
The logger uses an optical USB communications interface (via a compatible shuttle or base station) for launching and reading out the logger. The optical interface allows the logger to be offloaded without compromising the electronics. The USB compatibility allows for easy setup and fast downloads.
Manufacturer Specs
| Temperature Sensor | |
| Operation range Internal sensors | -40° to 70°C (-40° to 158°F) |
| External sensors | -40° to 100°C (-40° to 212°F), with tip and cable immersion in fresh water up to 50°C (122°F) for one year |
| Accuracy | ±0.21°C from 0° to 50°C (±0.38°F from 32° to 122°F) |
| Resolution | 0.02°C at 25°C (0.04°F at 77°F) |
| Response time (typical to 90%) | |
| External sensors | 3 minutes in air moving 1 m/sec; 30 seconds in stirred water |
| Stability (drift) | < 0.1°C (0.18°F) per year |
| Logger | |
| Operation range | -40° to 70°C (-40° to 158°F) |
| Real-time clock | ± 1 minute per month 0° to 50°C (32° to 122°F) |
| Battery | 1/2 AA, 3.6 Volt lithium, user-replaceable (part # HP-B) |
| Battery life (typical use) | 3 years with 1 minute or greater logging interval |
| Memory (non-volatile) | 64K bytes memory (approx. 21,000 temperature and RH measurements) |
| Materials All models | ASA styrene polymer housing and mounting clamp; polypropylene protective cap; Buna-N o-ring(s) U23-001, U23-002 only: ASA styrene polymer RH sensor cap; modified hydrophobic polyethersulfone membrane |
| Cables | |
| U23-004 | One 184 cm (6 ft.) PVC cable; sensor diameter 0.5 cm (0.20 in.) |
| Environmental rating | Electronics housing is NEMA 6P equivalent (tolerant of brief submergence) Units with RH sensors are NEMA 4 equivalent (splash-resistant) |
| Launch modes | Immediate start; delayed start |
| Logging interval | Fixed-rate or multiple logging intervals, with up to 8 user-defined logging intervals and durations; logging intervals from 1 second to 18 hours (refer to HOBOware software manual) |
| Offload modes | Offload while logging; stop and offload |
| Battery indication | Battery voltage can be viewed in status screen and optionally logged in datafile. Low battery indication in datafile |
| Weight | 102 g (2.7 oz) |
| Dimensions | Housing measures 10.2 × 3.8 cm (4.0 × 1.5 in.) |
| NIST certificate Temperature certificate available for additional charge | |
| The CE Marking identifies this product as complying with the relevant directives in the European Union (EU) | |
Tech Specs
Dataloggers / Data Acquisition/Dataloggers for Environmental Variables/Temperature Dataloggers Templ |
|
|---|---|
| Max Temperature | 70 C |
| Min Temperature | -40 C (-40 F) |
| Power Source | Battery |
| Battery Life | 3 YEARS (26280 HR) |
| Accuracy | ±0.21°C from 0° to 50°C (±0.38°F from 32° to 122°F) |
| Software Included | Yes |
Test Equipment General Attributes |
|
| Unique Features | Weatherproof housing for use in outdoor or condensing environments High accuracy Small-diameter external sensor versions for measurements in tight spaces Optic USB interface for fast and reliable download |
| Safety Approval | CE |
| Interfaces I/O | USB |
| Product Weight | 102 LBS |
| Data Logging | Yes |
| Battery Type | AA |
| Power Supply Voltage | Battery Powered |
| Country of Origin | United States |
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