UX90-004
UX90-004M
HOBO Motor On/Off Data Logger
HOBO data loggers require HOBOware software and a USB cable. (Note: A USB cable is included w/HOBOware Pro CD or USB software purchase). See compatible items below.
Overview
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.
- 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 UX90-004x data logger supports the following measurements: Motor On/Off, Runtime and State Open/Closed
The country of origin for this product is the United States. To see the full specifications for this product, please see our product manual found under the documentation tab if available.
Choose measurement system:
Some specifications display both measurement systems and/or refer to other similar products when mentioned.
Internal Motor Sensor | |
AC Magnetic Field Threshold | >40 mGauss at 60 Hz |
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 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 |
Logger | |
Resolution | Pulse: 1 pulse, Runtime: 1 second, State and Event: 1 State or Event |
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 |
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 | UX90-004: 128 KB (84,650 measurements, maximum) UX90-004M: 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 8.48 x 1.52 cm
(1.44 x 3.34 x 0.6 in.)
|
Weight | 30 g
(1.06 oz)
|
Environmental Rating | IP50 |
Compliance Marks |

- HOBO UX90-004x Motor On/Off Data Logger
- Commandâ„¢ strip
- Double-sided tape
- Hook & loop strap
The following are associated resources for this product. In general users of this product can gain insight into its possible use by utilizing the resources below.
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Detailed Specifications
HOBO Motor On/Off Data Logger
Choose measurement system:
Some specifications display both measurement systems and/or refer to other similar products when mentioned.
Internal Motor Sensor | |
AC Magnetic Field Threshold | >40 mGauss at 60 Hz |
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 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 |
Logger | |
Resolution | Pulse: 1 pulse, Runtime: 1 second, State and Event: 1 State or Event |
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 |
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 | UX90-004: 128 KB (84,650 measurements, maximum) UX90-004M: 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 8.48 x 1.52 cm
(1.44 x 3.34 x 0.6 in.)
|
Weight | 30 g
(1.06 oz)
|
Environmental Rating | IP50 |
Compliance Marks |