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HOBO® 4-Channel Pulse Input
Data Logger (UX120-017x) Manual
HOBO 4-Channel Pulse
Input Data Logger
Models: UX120-017
UX120-017M
Included Items:
• 4 Mounting screws
• 2 Magnets
• Hook & loop tape
• 4 Terminal block connectors
Required Items:
• HOBOware Pro 3.2 or later
• USB cable (included with
software)
Accessories:
• Additional terminal blocks
(A-UX120-TERM-BLOCK)
• Lithium batteries (HWSB-LI)
14638-E
The HOBO 4-Channel Pulse Input data logger records electronic pulses and mechanical or
electrical contact closures from external sensing devices. Using HOBOware®, you can easily
configure each of its four channels to monitor and record pulse, event, state, or runtime data in
a wide variety of applications, including tracking building energy consumption, monitoring
mechanical equipment, and recording water and gas flow rates. Plus, when combined with the
E50B2 Energy & Power Meter (T-VER-E50B2), this logger provides extensive power and energy
monitoring capabilities. There are two models of the HOBO 4-Channel Pulse Input data logger:
the UX120-017 stores more than 500,000 measurements while the UX120-017M holds more
than 4,000,000 measurements.
Specifications
Inputs
External Contact Input
Maximum Pulse Frequency
Maximum State, Event,
Runtime Frequency
Bits
Maximum Pulses Per
Interval
Driven Logic Signal
Absolute Maximum Rating
Solid State Switch Closure
Internal Weak Pull-Up
Input Impedance
Minimum Pulse Width
Lockout Time
Edge Detection
Preferred Switch State
Logging
Resolution
Logging Rate
Time Accuracy
Battery Life
Battery Type
Memory
Memory
Download Type
Download Time
Physical
Operating Range
Weight
Size
Environmental Rating
Electronic solid state switch closure or logic driven digital signals to
24 V
120 Hz
1 Hz
4–32 bits depending on pulse rate and logging interval
7,863,960 (using maximum logging rate)
Input Low: ≤ 0.4 V; Input High: 3 to 24 V
Maximum Voltage: 25 V DC
Minimum Voltage: -0.3 V DC
Input Low: < 10 KΩ; Input High: > 500 KΩ
100 KΩ
Solid state switch closure: 100 KΩ pull up; Driven signal: 4.5 KΩ
Contact closure duration: 500 uS; Driven logic signal: 100 uS
0 to 1 second in 100 ms steps
Falling edge, Schmitt Trigger buffer
Normally open or Logic "1" state
Pulse: 1 pulse, Runtime: 1 second, State and Event: 1 State or Event
1 second to 18 hours, 12 minutes, 15 seconds
±1 minute per month at 25°C (77°F) (see Plot A on next page)
1 year, typical with logging intervals greater than 1 minute and
normally open contacts
Two AA alkaline or lithium batteries
UX120-017: 520,192 measurements (assumes 8-bit)
UX120-017M: 4,124,672 measurements (assumes 8-bit)
USB 2.0 interface
30 seconds for UX120-017, 1.5 minutes for UX120-017M
Logging: -40° to 70°C (-40° to 158°F); 0 to 95% RH (non-condensing)
Launch/Readout: 0° to 50°C (32° to 122°F) per USB specification
149 g (5.26 oz)
11.4 x 6.3 x 3.3 cm (4.5 x 2.5 x 1.3 inches)
IP50
The CE Marking identifies this product as complying with all relevant
directives in the European Union (EU).
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