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.
Item number UX90-004M has been discontinued.
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
In what environment does this data logger operate?
This data logger operates in an indoor environment.
What measurements does this data logger support?
The UX90-004 data logger supports the following measurements: Motor On/Off, Runtime and State Open/Closed
Internal Motor Sensor
AC magnetic field threshold: > 40 mGauss at 60 Hz
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 state and runtime frequency: 1 Hz
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
Resolution: Pulse: 1 pulse, Runtime: 1 second, State and Event: 1 State or Event
UX90-002- Temperature Specification ChartTime 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
UX90-004: 128 KB (84,650 measurements, maximum)
UX90-004M: 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 8.48 x 1.52 cm (1.44 x 3.34 x 0.6 in.)
Weight: 30 g (1.06 oz)
Environmental rating: IP50
The CE Marking identifies this product as complying with all relevant directives in the European Union (EU)