HOBO Pendant Event Data Logger – IC-UA-003-64

Features:

Ideal for recording rainfall with tipping-bucket rain gauges
Records tips or momentary contact closures and temperature
Event-based data storage provides detailed data and efficient memory usage
Stores over 16,000 tips (160 in. of rainfall with a 0.01 in. rain gauge)
Includes scaling to inches, millimeters or other units

Specifications

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
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 voltage + 0.3 V
User connection: 24 AWG, 2 leads: white (+), black (-)
Measurement range: -20 to 70C (-4 to 158F)
Accuracy: 0.53C from 0 to 50C ( 0.95F from 32 to 122F), see Plot A. A solar radiation shield is required for accurate temperature measurements in sunlight.
Resolution: 0.14C at 25C (0.25F at 77F), see Plot A
Drift: Less than 0.1C/year (0.2F/year)
Response time: Airflow of 2 m/s (4.4 mph): 10 minutes, typical to 90%
Time accuracy: 1 minute per month at 25C (77F), see Plot B
Operating range: -20 to 70C (-4 to 158F)
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 70C (-4 to 158F)
Battery: CR-2032 3V lithium battery; 1 year typical use