“:” stop blinking. Press again to resume logging, the “:” blinks again.
Press to start storing readings in sequence according to the pre-set
The table below shows the measuring range of each type of thermocouple
K type: -200.0ºC to +1372ºC (-328.0 ºF to +2501 ºF)
J type: -210.0ºC to +1200ºC (-346.0 ºF to +2192 ºF)
T type: -250.0ºC to +400.0ºC (-418.0 ºF to +752.0 ºF)
E type: -150.0ºC to +1000ºC (-238.0 ºF to +1832 ºF)
For example:
The Max. value of the high alarm of K type is +1372ºC.
The Min.value of the high alarm of K type is either Low Alarm Limit Value+1
or -200ºC.
The table below shows the measuring range of each type of thermocouple
K type: -200.0ºC to +1372ºC (-328.0ºF to +2501ºF)
J type: -210.0ºC to +1200ºC (-346.0ºF to +2192ºF)
T type: -250.0ºC to +400.0ºC (-418.0ºF to +752.0ºF)
E type: -150.0ºC to +1000ºC (-238.0ºF to +1832ºF)
Measuring Temperatures
Thermocouples are color-coded based on the North American ANSI Colour
Code:
Type Colour Type Colour
J Black R Green
K Yellow S Green
T Blue N Orange
E Purple
1. Plug a thermocouple into the input connector(s).
2. Set the same thermocouple type in the thermometer.
To change the thermocouple type, see “Changing Setup Options”.
1. Press ºC ºFK to select the correct temperature unit.
2. Hold or attach the thermocouple(s) to the measured location.
The temperature shows in the selected unit on LCD.
1. Press
HOLD
to freeze the readings on the display. The display shows HOLD.
2. Press
HOLD
again to turn off the HOLD function.
1. Under temperature measurement mode, press to turn the display
2. Press again to turn off the display backlight. The display backlight will not
turn automatically off.
1. Press
MIN MAX
to step through the maximum (MAX), minimum (MIN),
or the average (AVG) readings.
2. Press and hold
MIN MAX
to exit MIN MAX mode.
1. Plug the thermocouple into the input connector.
2. Place the thermocouple in a known, stable temperature environment (such
as an ice bath or a dry well calibrator).
3. Allow the readings to stabilize.
4. In Setup change the offset until the display reading matches the debug
temperature. (See “Changing Setup Options.”)
Setting the low alarm and high alarm limit at the SETUP mode, the thermometer
beeps when the measured temperature is higher or lower than the pre-set limit.
(See “Changing Setup Options.”)
Setting the low and high limit signal output at the SETUP mode, the SIGN port
output the corresponding signal when the measured temperature is higher or
lower than the pre-set limit. (See “Changing Setup Options.”)
Use the offset option in Setup to adjust the thermometer’s readings to
compensate for the errors of a specific thermocouple.
After entering the Debug mode, you can self-debug. Follow the procedures
as below:
K- and J- type:
-180ºC, 0ºC and 900ºC
T type:
-180ºC, 0ºC and 400ºC
E type:
-140ºC, 0ºC and 900ºC
R- and S- type:
0ºC and 1200ºC
N type:
-180ºC, 0ºC and 1200ºC
Remark:
0ºC is only for debugging K type.
Remark:
For Temperature VS Voltage table, refer to BS EN 60584 - 1:1996. Before
carrying out the debug, please ensure your standard source has the accuracy
up to the demand. Our company will not be liable for massive deviation occuring
to the accuracy of the thermometer that has been caused by improper selection
of standard source on users' side.
Using Memory
During a logging session, the thermometer stores logged readings in its memory.
The thermometer stores 00-99, total 100 sets of temperature readings. The
stored readings are from primary display.
1. Set the logging interval. (See “Changing Setup Options.”)
2. Press
STORE
to start logging.
DATA shows and blinks on LCD.
3. Press
STORE
again to stop logging.
4. If you selected a manual logging interval, set the logging interval as 00:00. Press
ENTER
each time you want to store logged readings in memory. The secondary
display 1 shows the logged reading. Each presses of
ENTER
will automatically
store the logged readings in the next memory location. Press
or
could
change the memory location, the empty location shows “- - - - - ”.
5. If you selected an auto logging interval, set the logging interval to any time
except 00:00. After entering logging mode, the secondary display 2 shows “:”
ENTER
logging interval, the “:” blinks. Press
again to pause auto logging, the
ENTER
1. Press
STORE
to enter logging mode, DATA shows and blinks on LCD.
2. Press and hold down
STORE
for 2 seconds, the display shows CLR.
3. Press
ENTER
to delete all the logged readings from memory. It is not
possible to delete the logged readings one by one.
The display then shows “----“
Communicating with a PC
You can transfer the data from the thermometer’s memory to a PC using the
included Software.
Press
SEND
button and USB blinks on the display. It means the Thermometer
has already been communicated normally to the PC. Details refer to the
Installation Guide file in the Software.
Under the influence of radiated Radio-Frequency electromagnetic Field
the captioned models have a measurement error, it will be back to normal when
the interference is removed.
Maintenance
Replace the batteries as soon as the battery indicator appears. The possibility
of false readings can lead to personal injury.
1. Turn off the thermometer.
2. Loosen the screw and remove the battery door.
3. Replace the battery with a new 9V battery (6F22). Reinstall the battery door
and tighten the screw.
Clean the surface of the thermometer with soft cloth or sponge dampened with
water or mild detergent. Do not get water inside the thermometer, otherwise it
may cause damage to internal circuits or the instrument.
Specifications
Operating Temperature
Storage Temperature
Humidity
-10ºC to 50ºC
(14ºF to 122ºF)
-40ºC to + 60ºC
(-14ºF to +140ºF)
Non condensing <10ºC (<50ºF)
95% RH: 10ºC to 30ºC (50¨ºF to 86ºF)
75% RH: 30ºC to 40ºC (86ºF to 104ºF)
45% RH: 40ºC to 50ºC (104ºF to 122ºF)
Certification
Safety
EN61326: 2006, EN55022: 2006 and EM55024: 1998+A1+A2
Function UT321 UT322 UT323 UT325 Input
Protection
Type
Input
Measurement
Range
Display
Resolution
Measurement
Accuracy
K, J, T, E K, J, T, E, R, S, N
T1 T1, T2 T1 T1, T2
K type: -200.0ºC to +1372ºC (-328.0 ºF to +2501 ºF)
J type: -210.0ºC to +1200ºC (-346.0 ºF to +2192 ºF)
T type: -250ºC to +400.0ºC (-418 ºF to +752.0 ºF)
E type: -150.0ºC to +1000ºC (-238.0 ºF to +1832 ºF)
0.1ºC ºF/K…. (<1000) (T type below -200ºC and R
type, S type is 1ºC ºF/K)
1.0ºC ºF/K…. (>1000)
K-,J-,T-, E- type:
±(0.2%+0..6ºC(1.2ºF))
R,S type: ±(0.2%+2ºC(4ºF))
N type: ±(0.2%+1.5ºC(3ºF))
±(0.5%+0.8ºC(1.6ºF))
30V
Below -10ºC: add 0.5ºC
Below -200ºC, add +2ºC
Type T Below -200ºC: for reference only.
50 times per second, Updates 2-3 times per second
Relative Time
0 ~ 99 sets
Logging Interval, Thermocouple Type, Offset (T1),
Offset (T2) (UT322 and UT325 only), Sleep Mode,
Line Frequency, Time, High/Low Limit (UT323 and
UT325 only), Over Limit Signal Output (UT323 and
UT325 only), Normal Temperature Compensation,
Debug (UT323 and UT325 only)
N/A Yes
N/A Yes
One piece of 9V (NEDA1604 or 6F22 or 006P)
Sampling Rate
Time
Data Store
Setup
Over Limit Alarm
Over Limit Signal
Power
Accuracy is specified for ambient temperatures between 18ºC(60ºF)and 28ºC
(82ºF) for a period of 1 year, operating temperatures: -10ºC ~ 50ºC (14ºF ~
122ºF). The above specifications do not include thermocouple probe error.
* END *
This operating manual is subject to change without notice.
6. The Max.value for high alarm is the upper limit value of measuring range of
the applied thermocouple.
7. The Min. value for high alarm is the setting low alarm limit value if low alarm
is enabled (if still less than the low alarm limit value, Min. Value=Low Alarm
Limit Value+1), otherwise this Min. value is the lower limit value of measuring
range of the applied thermocouple.
3. With High/Low Limit Alarm set up and Over Limit Signal Output turned on
already,
The display shows On or Off. It defaults to ON status at power-on.
defaults to OFF status.
backlight on.
sources the voltage corresponding to
ENTER
RCL shows and blinks on LCD.
last stored reading prior to exiting the logging. The temperature unit will
switch automatically along with the recalled data based on what have been
stored during the logging.
location reaches 99.
shows the system time when the data was logged. The primary display shows
each logged reading.
3.
4.
P/N:110401104391X DATE:2018.06.26 REV.5
