The HOBO Motor On/Off data logger records motor on and off conditions within an AC magnetic field with its internal sensor, or mechanical dry contact closures from external sensing devices. This data logger is ideal for tracking the usage & runtimes of motors, pumps, compressors, and other equipment. The HOBO UX90-004 Motor On/Off Data Logger is available in a standard 128 KB memory model (UX90-004) capable of 84.650 measurements and an expanded 512KB memory version (UX90-004M) capable of over 346.795 measurements.
Highlighted Features
Dual internal motor sensors gives better sensitivity for well-shielded motors
External input for measuring mechanical contact closures when signal strength is low
Auto-calibration of ON and OFF thresholds ensures reliable readings
Compatible with HOBOware and HOBOware Pro software for logger setup, graphing and analysis
The UX90-004 data logger supports the following measurements: Motor On/Off, Runtime and State Open/Closed
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
Time accuracy: ±1 minute per month at 25°C (77°F) (see Plot A)
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
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
- The CE Marking identifies this product as complying with all relevant directives in the European Union (EU)
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