Overview
Records motor on/off conditions within an AC magnetic field with its internal sensor, or mechanical dry contact closures from external sensing devices. This logger is ideal for tracking the usage and runtimes of motors, pumps, compressors, and other equipment.
Item number UX90-004M has been discontinued.
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 and graphing & analysis
Specifications
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
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
UX90-004: 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
