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HOBO® 4-Channel Thermocouple

Data Logger (UX120-014M) Manual

17031-D

The HOBO 4-Channel Thermocouple data logger records temperature in indoor environments

using up to four J, K, T, E, R, S, B, or N type thermocouple sensors (sold separately). The logger

also has an internal 10K thermistor for cold-junction compensation of the thermocouple

output. The four thermocouple channels have a 20-bit resolution while the internal 10K

thermistor has a 12-bit resolution. Using HOBOware®, you can easily configure the logger alarm

to trip for specific high or low temperatures. Or, you can set up burst logging in which the

logger records data at a different interval during certain conditions. The logger can also

calculate minimum, maximum, average, and standard deviation statistics. This easy-to-use data

logger has a built-in LCD screen to monitor temperature, logging status, battery use, and

memory consumption in between readouts. An optional protective case (CASE-4X-2) is also

available for this logger.

Specifications

Thermocouple

Type Range Accuracy Resolution

J -210° to 760°C

(-346° to 1,400°F)

±0.6°C (±1.08°F) ± thermocouple

probe accuracy

0.03°C (0.06°F)

K -260° to 1,370°C

(-436° to 2,498°F)

±0.7°C (±1.26°F) ± thermocouple

probe accuracy

0.04°C (0.07°F)

T -260° to 400°C

(-436° to 752°F)

±0.6°C (±1.08°F) ± thermocouple

probe accuracy

0.02°C (0.03°F)

E -260° to 950°C

(-436° to 1,742°F)

±0.6°C (±1.08°F) ± thermocouple

probe accuracy

0.03°C at (0.05°F)

R -50° to 1,550°C

(-58° to 2,822°F)

±2.2°C (±3.96°F) ± thermocouple

probe accuracy

0.08°C (0.15°F)

S -50° to 1,720°C

(-58° to 3,128°F)

±2.2°C (±3.96°F) ± thermocouple

probe accuracy

0.08°C (0.15°F)

B 550° to 1,820°C

(1,022° to 3,308°F)

±2.5°C (±4.5°F) ± thermocouple

probe accuracy

0.1°C (0.18F)

N -260° to 1,300°C

(-436° to 2,372°F)

±1.0°C (±1.8°F) ± thermocouple

probe accuracy

0.06°C (0.11°F)

Internal 10K Thermistor (Temperature)

Range -20° to 70°C (-4° to 158°F)

Accuracy ±0.21°C from 0° to 50°C (±0.38°F from 32° to 122°F), see Plot A

Resolution 0.024°C at 25°C (0.04°F at 77°F); see Plot A

Drift <0.1°C (0.18°F) per year

Logger

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

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

Logging Modes Fixed interval (normal), burst, or statistics

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

Restart Mode Push button

Time Accuracy ±1 minute per month at 25°C (77°F), see Plot B

Power Source Two AAA 1.5 V alkaline batteries, user replaceable, and USB cable

Battery Life 1 year, typical with logging rate of 1 minute and sampling interval of

15 seconds or greater

Memory 4 MB (1.6 million measurements, maximum)

HOBO 4-Channel

Thermocouple

Data Logger

UX120-014M

Included Items:

• Command™ strip

• Double-sided tape

• Hook & loop strap

• Two AAA 1.5 V alkaline

batteries

Required Items:

• HOBOware 3.5 or later

• USB cable (included with

software)

• Thermocouple sensor type

J, K, T, E, R, S, B, or N

Accessory:

• Protective case (CASE-4X-2)

Summary of content (8 pages)

PAGE 1
HOBO® 4-Channel Thermocouple Data Logger (UX120-014M) Manual The HOBO 4-Channel Thermocouple data logger records temperature in indoor environments using up to four J, K, T, E, R, S, B, or N type thermocouple sensors (sold separately). The logger also has an internal 10K thermistor for cold-junction compensation of the thermocouple output. The four thermocouple channels have a 20-bit resolution while the internal 10K thermistor has a 12-bit resolution.
PAGE 2
HOBO 4-Channel Thermocouple Data Logger (UX120-014M) Manual Specifications (continued) Logger (continued) Download Type USB 2.0 interface Full Memory Download Time Approximately 1.5 minutes 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 10.8 x 5.41 x 2.54 cm (4.25 x 2.13 x 1 in.) Weight 107.5 g (3.
PAGE 3
HOBO 4-Channel Thermocouple Data Logger (UX120-014M) Manual Thermocouple Ports: Use these ports (not visible in the diagram) to connect thermocouple sensors (see Connecting Thermocouple Sensors). LCD Symbol USB Port: Use this port to connect the logger to the computer or the HOBO U-Shuttle via USB cable (see Setting up the Logger and Reading Out the Logger). LCD Screen: This logger is equipped with an LCD screen that displays details about the current status.
PAGE 4
HOBO 4-Channel Thermocouple Data Logger (UX120-014M) Manual data will be recorded at the faster interval, but the sensor readings will only be updated on the screen every 15 seconds. Important: Cold-junction compensation is always performed on the thermocouple measurements even if the internal 10k thermistor (temperature) channel is not selected for logging.
PAGE 5
HOBO 4-Channel Thermocouple Data Logger (UX120-014M) Manual Refer to http://www.omega.com/techref/colorcodes.html for additional details on color coding. For example, a logger started logging at 7:00 AM with a logging interval set to 1 hour. If you press the Start/Stop button to stop the logger at 8:45 AM and then press the button again at 10:15 AM, logging will not begin immediately at 10:15.
PAGE 6
HOBO 4-Channel Thermocouple Data Logger (UX120-014M) Manual For example, the high alarm for temperature is set to 300°F and the duration is set to 30 minutes. If Cumulative is selected, then an alarm will trip once a sensor reading has been at or above 300°F for a total of 30 minutes since the logger was configured; specifically, this could be 15 minutes above 300°F in the morning and then 15 minutes above 300°F again in the afternoon.
PAGE 7
HOBO 4-Channel Thermocouple Data Logger (UX120-014M) Manual 5. Repeat steps 2 through 4 for any additional thermocouple sensors. For example, let’s say the logging interval is set to 5 minutes and the sampling interval is set to 30 seconds (with maximum, minimum, average, and standard deviation all enabled). Once logging begins, the logger will measure and record the actual sensor values every 5 minutes. In addition, the logger will take a sample every 30 seconds and temporarily store it in memory.
PAGE 8
HOBO 4-Channel Thermocouple Data Logger (UX120-014M) Manual Recording Internal Logger Events Battery Information The logger records the following internal events to track logger operation and status. You can plot these events in HOBOware after reading out the logger and opening the data file. The logger requires two user-replaceable AAA 1.5V alkaline or optional lithium batteries for operation at the extreme ends of the logger operating range.