HOBO State Data Logger

Specifications

Internal Sensor

Maximum State, Event, Runtime Frequency 1 Hz
Preferred Switch State: No magnet present (normally open)

External Input

External Contact Input: Electronic solid state switch closure or logic driven voltage output
Range: 0 to 3 V DC (USB powered), 0 to 2.5 V DC (battery powered)
Maximum Pulse Frequency: 50 Hz
Maximum State, Event, Runtime Frequency: 1 Hz
Pulse, Event Lockout Time: 0 to 1 second in 100 ms steps
Solid State Switch Closure: Input Low: < 10 KΩ; Input High: > 500 KΩ
Internal Weak Pull-Up: 100 KΩ
Input Impedance: Solid state switch closure: 100 KΩ pull up

Logger

Resolution: Pulse: 1 pulse, Runtime: 1 second, State and Event: 1 State or Event
Logging Rate: 1 second to 18 hours, 12 minutes, 15 seconds
Memory Modes: Wrap when full or stop when full
Start Modes: Immediate, push button, date & time, or next interval
Stop Modes: When memory full, push button, or date & time
Time Accuracy: ±1 minute per month at 25°C (77°F) (see Plot A)
Power Source: One 3V CR2032 lithium battery and USB cable
Battery Life: 1 year, typical with logging intervals greater than 1 minute and normally open contacts
Memory: UX90-001: 128 KB (84,650 measurements, maximum)
UX90-001M: 512 KB (346,795 measurements, maximum)
Download Type: USB 2.0 interface
Full Memory Download Time: 10 seconds for 128 KB; 30 seconds for 512 KB
Logger Operating Range: Logging: -20° to 70°C (-4° to 158°F); 0 to 95% RH (non-condensing)
Launch/Readout: 0° to 50°C (32° to 122°F) per USB specification
LCD: LCD is visible from: 0° to 50°C (32° to 122°F); the LCD may react slowly or go blank in temperatures outside this range
Size: 3.66 x 5.94 x 1.52 cm (1.44 x 2.34 x 0.6 in.)
Weight: 23 g (0.81 oz)
Environmental Rating: IP50