HOBO® Pendant® Event Data Logger (UA-003-64) Manual
9831-I MAN-UA-003
The HOBO Pendant Event/Temp Data Logger is a rugged, weatherproof event logger with a 10-
bit temperature sensor. It is ideal for use with tipping-bucket rain gauges, and can record tens
of thousands of measurements and events. The logger uses a coupler and optical base station
with USB interface for launching and data readout by a computer.
Specifications
External Event Input
Event Sensor
Two-wire interface suitable for measuring mechanical and electrical contact
closures
Maximum Input
Frequency
1 Hz (1 pulse per second)
Lockout Time
500 ms
Minimum Pulse Width
1 ms (hardware debounce)
Input/Output Impedance
100 k
Ω
Edge Detection
Falling edge, contact closure, or Schmitt-trigger buffer
Preferred Switch Type
Normally open. For maximum battery life, the event input should be used
with its preferred switch type. The logger will work with normally closed
switches, but battery life will be compromised.
Open Circuit Input
Voltage
Battery voltage; nominally 3.0 V
Maximum Input Voltage
Battery v 0.3 V
User Connection
24 AWG, 2 leads: white (+), black (-)
Temperature Measurement
Measurement Range
-20° to 70°C (-4° to 158°F)
Accuracy
±0.53°C from 0° to 50°C (±0.95°F from 32° to 122°F), see Plot A. A solar
radiation shield is required for accurate temperature measurements in
sunlight.
Resolution
0.14°C at 25°C (0.25°F at 77°F), see Plot A
Drift
Less than 0.1°C/year (0.2°F/year)
Response Time
Airflow of 2 m/s (4.4 mph): 10 minutes, typical to 90%
Logger
Time Accuracy
±1 minute per month at 25°C (77°F), see Plot B
Operating Range
-20° to 70°C (-4° to 158°F)
Environmental Rating
Tested to NEMA 6 and IP67; suitable for deployment outdoors
Drop Specification
1.5 m (5 ft) onto concrete
NIST Traceable
Certification
Available for temperature only at additional charge; temperature range
-20° to 70°C (-4° to 158°F)
Battery
CR-2032 3V lithium battery; 1 year typical use
Memory
64K bytes; see
Data Storage
.
Materials
Polypropylene case; stainless steel screws; Buna-N o-ring; PVC cable
insulation
Weight
50 g (1.7 oz.)
Dimensions
71 x 33 x 23 mm (2.8 x 1.3 x 0.9 inches); 1.8 m (6 ft) cable
The CE Marking identifies this product as complying with all relevant
directives in the European Union (EU).
HOBO Pendant Event
Data Logger
Model: UA-003-64
Included Items:
•
Tie wraps
•
Adhesive mount
Required Items:
•
HOBOware 2.x or later (go to
www.onsetcomp.com/
hoboware-free-download)
•
USB cable
•
Pendant Optic USB Base
Station & Coupler (BASE-U-1)
•
Optic USB Base Station
(BASE-U-4) or HOBO
Waterproof Shuttle
(U-DTW-1) & Coupler
(COUPLER2-A)
Shop for Data Logging products online at:
www.
DataLoggerStore
.ca
1.800.561.8187
