HOBO 4-Channel Pulse Input Logger 512KB

Overview
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.

Highlighted Features
Simultaneously measures and records pulse signals, events, state changes, and runtimes
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

Inputs
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
Minimum Voltage: -0.3 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