background image

HOBO® Pendant® Temperature Data Logger (UA-001-xx) Manual 

9531-O 

The HOBO Pendant Temperature Data Logger is a waterproof, one-channel logger with 10-bit 
resolution and can record up to approximately 6,500 (8K model) or 52,000 (64K model) 
measurements or internal logger events. The logger uses a coupler and optical base station 
with USB interface for launching and data readout by a computer. Onset software is required 
for logger operation. Visit www.onsetcomp.com/hoboware-free-download. 

Specifications 

Measurement Range 

-20° to 70°C (-4° to 158°F) 

Alarms 

High and low alarms can be configured for total amount of contiguous or 
non-contiguous time outside of user-defined limits between -20° and 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 

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% 
Water: 5 minutes, typical to 90% 

Time Accuracy 

±1 minute per month at 25°C (77°F), see Plot B 

Operating Range 

In water/ice: -20° to 50°C (-4° to 122°F) 
In air: -20° to 70°C (-4° to 158°F) 

Water Depth Rating 

30 m from -20° to 20°C (100 ft from -4° to 68°F), see Plot C 

NIST Traceable 
Certification 

Available for temperature only at additional charge; temperature range  
-20° to 70°C (-4° to 158°F) 

Battery Life 

1 year typical use 

Memory 

UA-001-08: 8K bytes (approximately 6.5K sample and event readings) 
UA-001-64: 64K bytes (approximately 52K sample and event readings) 

Materials 

Polypropylene case; stainless steel screws; Buna-N o-ring 

Weight 

15.0 g (0.53 oz) 

Dimensions 

58 x 33 x 23 mm (2.3 x 1.3 x 0.9 inches) 

Environmental Rating 

IP68 

 

The CE Marking identifies this product as complying with all relevant 
directives in the European Union (EU). 

Passed RTCA DO160G, part 21H

 

 

 

Plot A 

Plot B 

 

Plot C

 

0

10

20

30

40

-20

0

20

40

60

Temperature (°C)

De

p

th

 (

m

)

Waterproof 

range

HOBO Pendant 
Temperature Data Logger 

Models: UA-001-08 

UA-001-64 

Required Items: 

 

HOBOware 2.x or later 

 

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) 

 

 

 

Reviews: