UNI-T UT321 Operating Manual Download | Manualshive

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Caution

A caution identifies conditions and actions that may damage the meter or the
equipment under test.

Use the proper thermocouples, function, and the range of your thermometer.
When carrying two thermocouples measurement, make sure there are no
potential differences between two thermocouples.
Do not attempt to recharge the battery.
Match the + and – polarities of the battery with the battery case.

Table 2. International Symbols

Refer to the manual for information about this feature

Complies with European Union directives

Battery

Model UT321/322/323/325: OPERATING MANUAL

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Summary of Contents for UT321

Page 1: ...tons Using the Thermometer Changing Setup Options Entering and Exiting Setup Changing the Logging Interval Changing the Thermocouple Type Changing the Offset T1 Changing the Offset T2 Sleep Mode Changing the Line Frequency Setting the Time Setting the Low Limit Alarm Lo Setting the High Limit Alarm Hi 1 Model UT321 322 323 325 OPERATING MANUAL ...

Page 2: ...ght Viewing the MIN MAX and AVG Readings Using the Offset to Adjust Probe Errors Over Limit Alarm Over Limit Signal Output Debug Using Memory Starting and Stopping Logging Viewing Logged Readings Clearing Memory Communicating with a PC Enabling or Disabling Over Limit Signal Output Enabling or Disabling Normal Temperature Compensation NTC Enabling or Disabling Debug Model UT321 322 323 325 OPERATI...

Page 3: ...Maintenance Replacing the Battery Cleaning the Case Specifications Environmental General Electrical Title Page 32 32 32 33 33 33 33 Model UT321 322 323 325 OPERATING MANUAL 3 ...

Page 4: ...T1 and T2 suitable for K J T and E type thermocouples UT323 T1 suitable for K J T E R S and N type thermocouples Equipped with over limit alarm over limit signal output and user self debug features UT325 T1 and T2 suitable for K J T E R S and N type thermocouples Equipped with over limit alarm over limit signal output and user self debug features Use the thermometer only as specified in this manua...

Page 5: ...ates abnormally Protection may be impaired When in doubt have the thermometer serviced Do not operate the thermometer around explosive gas vapor or dust Do not apply more than the rated voltage as marked on the thermometer 30V between the thermocouple s or between any thermocouple and earth ground When potential differences are anticipated between the thermocouples use electrically insulated therm...

Page 6: ...arrying two thermocouples measurement make sure there are no potential differences between two thermocouples Do not attempt to recharge the battery Match the and polarities of the battery with the battery case Table 2 International Symbols Refer to the manual for information about this feature Complies with European Union directives Battery Model UT321 322 323 325 OPERATING MANUAL 6 ...

Page 7: ...therwise indicated To become familiar with the thermometer study the following Figure 1 and Table 3 describe the components Figure 2 and Table 4 describe the display Figure 3 a and 3 b and Table 5 describes the functions of the buttons Then read the following sections Model UT321 322 323 325 OPERATING MANUAL 7 ...

Page 8: ...Figure 1 Components Model UT321 322 323 325 OPERATING MANUAL 8 ...

Page 9: ...uttons Thermocouple T1 input Thermocouple T2 input UT323 and UT325 only USB Port SIGN Port Over Limit Signal Output UT323 and UT325 only NTC Battery Door 9V battery 6F22 1 2 3 4 5 6 7 8 9 Model UT321 322 323 325 OPERATING MANUAL 9 ...

Page 10: ...Model UT321 322 323 325 OPERATING MANUAL 10 ...

Page 11: ...hermocouple type The temperature units Secondary Display 1 Under Calibration mode when the icon blinks The displayed reading is fixed Secondary Display 2 The thermocouple measurement includes an offset See Changing Setup Options Readings are being logged when the icon blinks Primary Display The displayed readings do not change The symbol of display backlight 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Model ...

Page 12: ...Figure 3 a UT321 and UT323 buttons set Model UT321 322 323 325 OPERATING MANUAL 12 ...

Page 13: ...Figure 3 b UT322 and UT325 button set Model UT321 322 323 325 OPERATING MANUAL 13 ...

Page 14: ... hold to turn off this display Press to step through K J T E R S N type thermocouple Press to toggle showing the T1 T2 and T1 T2 differential temperature measurement in the primary or secondary display 1 Press to enter USB mode and the USB icon blinks Press again to exit USB mode Press to start or stop logging See Using Memory Starting and Stopping Logging Press to show logged readings Press again...

Page 15: ... After entering the Setup mode press to increase the displayed setting See Changing Setup Options After entering the Setup mode press to decrease the displayed setting See Changing Setup Options Confirm button See Changing Setup Options Table 5 Buttons ENTER SETUP Model UT321 322 323 325 OPERATING MANUAL 15 ...

Page 16: ...iation is too big the display shows _ _ _ _ Changing Setup Options Use Setup to change the following settings Logging interval Thermocouple type Offset T1 Offset T2 UT322 and UT325 only Sleep Mode Line Frequency Time S T Low Limit Alarm Lo UT323 and UT325 only High Limit Alarm Hi UT323 and UT325 only Over Limit Signal Output SI ON OFF UT323 and UT325 only Normal Temperature Compensation NTC ON OFF...

Page 17: ... the logging interval See Using Memory Press SETUP until the display shows INTERVAL The thermometer stores logged readings at the end of each logging interval You can select a logging interval by pressing or Holding down or causes the number to change more quickly The maximum interval is 59 59 and the minimum interval is 00 00 When the logging interval is 00 00 you need to store the readings manua...

Page 18: ...ave extra R S and N type 1 Press SETUP until the display shows OFFSET and T1 2 Press or until the display shows the correct reading The offset readings range 1 Press SETUP until the display shows OFFSET and T2 2 Press or until the display shows the correct reading The offset readings range Model UT321 322 323 325 OPERATING MANUAL 18 ...

Page 19: ...Model UT321 322 323 325 OPERATING MANUAL 19 ...

Page 20: ...Model UT321 322 323 325 OPERATING MANUAL 20 ...

Page 21: ... 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 Model UT321 322 323 325 OPERATING MANUAL 21 ...

Page 22: ...her the low alarm reading plus 1 or 200ºC Below table 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 Model UT321 322 323 325 OPERATING MANUAL 22 ...

Page 23: ...Model UT321 322 323 325 OPERATING MANUAL 23 ...

Page 24: ...Model UT321 322 323 325 OPERATING MANUAL 24 ...

Page 25: ...lour 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 thermometer for the correct thermocouple type To change the thermocouple type see Changing Setup Options Model UT321 322 323 325 OPERATING MANUAL 25 ...

Page 26: ...ay The display shows HOLD 2 Press HOLD again to turn off the HOLD function 1 Under temperature measurement mode press to turn the display backlight on 2 Press again to turn off the display backlight The display backlight will not 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 Model UT321 322 32...

Page 27: ...ge the offset until the display reading matches the calibration 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 t...

Page 28: ...g Below is the procedure 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 only need to debug k type Model UT321 322 323 325 OPERATING MANUAL 28 ...

Page 29: ...ng 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 The display blinks DATA 3 Press STORE again to stop logging 4 If you selected a manual logging interval set the logging interval...

Page 30: ...ws 5 If you selected an auto logging interval set the logging interval not 00 00 After entering logging mode the secondary display 2 shows Press ENTER to start storing readings in sequence according to the pre set logging interval the blinks Press ENTER again to pause auto logging the stop blinking Press ENTER again to resume logging the blinks again Model UT321 322 323 325 OPERATING MANUAL 30 ...

Page 31: ...a PC You can transfer the contents of the thermometer s memory to a PC using the included Software Press SEND button and USB blinks on the display It means the thermometer and the PC are connected correct Details refer to the Installation Guide file in the Software Under the influence of radiated Radio Frequency electromagnetic Field phenomenon the captioned model have a measurement error it will ...

Page 32: ...can lead to personal injury 1 Turn off the thermometer 2 Loosen the screw and remove the battery door 3 Replace 1 piece of 9V battery 6F22 Replace the battery door and tighten the screw Use soap and water or mild commercial cleaner Wipe with a damp sponge or soft rag Model UT321 322 323 325 OPERATING MANUAL 32 ...

Page 33: ... 14ºF to 122ºF 40ºC to 60ºC 14ºC to 140ºC 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 Model UT321 322 323 325 OPERATING MANUAL 33 ...

Page 34: ...o 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 Model UT321 322 323 325 OPERATING MANUAL 34 ...

Page 35: ...s 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 Model UT321 322 ...

Page 36: ...tween 18ºC 60ºF and 28ºC 82ºF for a period of 1 year operating temperatures 10ºC 50ºC 14ºF 122ºF The above specifications do not include thermocouple error probe tolerance is not included in above technical index Model UT321 322 323 325 OPERATING MANUAL 36 ...

Page 37: ... Fang Industrial Development District Hu Men Town Dongguan City Guang Dong Province China Postal Code 523 925 Headquarters Uni Trend Group Limited Rm901 9 F Nanyang Plaza 57 Hung To Road Kwun Tong Kowloon Hong Kong Tel 852 2950 9168 Fax 852 2950 9303 Email info uni trend com http www uni trend com Model UT321 322 323 325 OPERATING MANUAL 37 ...

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