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HOBO® 4-Channel Pulse Input

Data Logger (UX120-017x) Manual

14638-F

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 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

Logging

Resolution Pulse: 1 pulse, Runtime: 1 second, State and Event: 1 State or Event

Logging Rate 1 second to 18 hours, 12 minutes, 15 seconds

Time Accuracy ±1 minute per month at 25°C (77°F) (see Plot A on next page)

Battery Life 1 year, typical with logging intervals greater than 1 minute and

normally open contacts

Battery Type Two AA alkaline or lithium batteries

Memory

Memory UX120-017: 520,192 measurements (assumes 8-bit)

UX120-017M: 4,124,672 measurements (assumes 8-bit)

Download Type USB 2.0 interface

Download Time 30 seconds for UX120-017, 1.5 minutes for UX120-017M

Physical

Operating Range 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

Weight 149 g (5.26 oz)

Size 11.4 x 6.3 x 3.3 cm (4.5 x 2.5 x 1.3 inches)

Environmental Rating IP50

The CE Marking identifies this product as complying with all relevant

directives in the European Union (EU).

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)

Additional sensors and accessories

available at www.onsetcomp.com.

Summary of content (4 pages)

PAGE 1
HOBO® 4-Channel Pulse Input Data Logger (UX120-017x) Manual 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.
PAGE 2
Terminal Blocks: There are 4 terminal blocks included with the logger to plug into the inputs for connecting devices. Specifications (continued) Test Button: Press this button to activate the Activity Lights for 10 minutes to test for contact resistance or voltage signal in any of the four input channels (see the LED table). Mounting Holes: There are four mounting holes, two on each side, that you can use to mount the logger to a surface (see Mounting the Logger).
PAGE 3
. Choose the logging interval, from 1 second to a maximum of 18 hours, 12 minutes, and 15 seconds (available for Pulse or Runtime logging only). Determining Logging Duration for Event/State Data 4. Choose when to start logging: The logger’s storage capacity and logging duration varies depending on several factors, including logging interval, number of channels configured, and the type of data being recorded.
PAGE 4
HOBO 4-Channel Pulse Input Data Logger Manual U-Shuttle to HOBOware. Refer to the HOBOware Help for more details. Recording Internal Logger Events The logger records several internal events to help track logger operation and status. These events, which are unrelated to state and event logging, include the following: Internal Event Name Definition Host Connected The logger was connected to the computer. Started The Start/Stop button was pressed to begin logging.