The Hobo UX90-004 is an motor on/off data logger. With its internal sensor, it registers alternating current on an magnetic field. The UX90-004 can also be used with external sensors. This logger is very suitable for logging the use of motor, pumps, compressors etc.
The HOBO UX90-004 Motor On/Off 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.
Measurements: Motor On/Off, Runtime, State Open/Closed
Range: 0 to 3 V DC (USB powered), 0 to 2.5 V DC (battery powered)
Time accuracy: ±1 minute per month at 25°C (77°F)
Battery life: 1 year, typical with logging intervals greater than 1 minute and normally open contacts
Replacement for: H06-004-02, U9-004
Additional information: 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