| External Contact Input | Electronic solid state switch closure or logic driven digital signals to 24 V |
|---|---|
| Maximum Pulse Frequency | 120 Hz |
| Maximum State, Event, Runtime Frequency | 1 Hz |
| Bits | 4–32 bits depending on pulse rate and logging interval |
| Maximum Pulses Per Interval | 7,863,960 (using maximum logging rate) |
| Driven Logic Signal | Input Low: ≤ 0.4 V; Input High: 3 to 24 V |
| Absolute Maximum Rating | Maximum Voltage: 25 V DC |
| 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; Driven signal: 4.5 KΩ |
| Minimum Pulse Width | Contact closure duration: 500 uS; Driven logic signal: 100 uS |
| Lockout Time | 0 to 1 second in 100 ms steps |
| Edge Detection | Falling edge, Schmitt Trigger buffer |
| Preferred Switch State | Normally open or Logic "1" state |
| Logging Resolution | Pulse: 1 pulse |
| Logging Rate | 1 second to 18 hours, 12 minutes, 15 seconds |
| Battery Type | Two AA alkaline or lithium batteries |
| Battery Life | 1 year, typical with logging intervals greater than 1 minute and normally open contacts |
| Memory | UX120-017: 520,192 measurements (assumes 8-bit) |
| Operating Range | -40° to 70°C; 0 to 95% RH (non-condensing) |
| Weight | 149 g |
| Size | 11.4 x 6.3 x 3.3 cm |
| Environmental Rating | IP50 |
| Supports following measurements | AC Voltage, Amp Hour (Ah), Amps (A), Event, Kilowatt Hours (kWh), Kilowatts (kW), Motor On/Off, Power Factor (PF), Pulse Input, Runtime, State Open/Closed, Volt-Amp Reactive, Volt-Amp Reactive hour, Volt-Amps (VA), Volts (V), Water Flow, Watt Hours (Wh) and Watts (W) |
HOBO UX120-017 4-Channel Pulse Data Logger
The HOBO UX120 Pulse Data Logger is a highly versatile, 4-channel energy data logger that combines the functionality of four separate data loggers into one compact unit. It enables energy management professionals – from energy auditors to building commissioners – to easily track building energy consumption, equipment runtimes, and water and gas flow rates. The HOBO UX120 Pulse Data Logger is available in a standard memory model (UX120-017) capable of 500,000 measurements and an expanded memory version (UX120-017M) capable of over 4,000,000 measurements.
Highlight:
- Simultaneously measures and records pulse signals, events, state changes, andruntimes
- Stores up to over 4 million measurements, enabling longer deployments with fewer site visits
- Maximum pulse rate – 120 Hz
- Pulse input range – 0 to 24VDC
- Streamlines deployment via a range of start/stop options, logger status LEDs, and high-speed USB 2.0 data offload
- Works with Onset’s Energy & Power Meter to measure Power Factor (PF), Reactive Power (VAR), Watt Hours (Wh) and more. Learn how.
The T-VER-E50B2 Energy and Power Meter outputs (3) sets of pulses which are logged by the UX120-017. These pulses represent Watt-hours, Amp-hours, and VAR-hours. HOBOware software uses these pulse values to calulate AC Current, AC Voltage, kW, Power Factor, VARs, and VA. The formulas used in these calculations can be found here: 14993-A-Derived-Channels.zip
- Compatible with HOBOware and HOBOware Pro software for logger setup, graphing and analysis
