Uni-Trend UT325
Contents
1. Model UT321 322 323 325 OPERATING MANUAL Table of Contents Title Page Safety Information 4 Getting Stated ee 7 e aa cer 8 Display Elements 10 Buttons 2 2 12 Using the 16 Changing Setup Options Entering and Exiting Setup l Changing the Logging Interval 17 Changing the Thermocouple Type 18 Changing the Offset T1 18 Changing the Offset T2 18 Sleep Mode Changing the Line Frequency P Setting the Time poen e e e e e a a a g Setting the Low Limit Alarm Lo ee 0 Setting the High Limit Alarm Hi 21 Model UT321 322 323 325 OPERATING MANUAL Title Page Enabling or Disabling Over Limit Signal Output Enabling or Disabling Normal Temperature Compensala2. of false readings can lead to personal injury Do not use the thermometer if it operates 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 thermocouples When servicing the thermometer use only specified replacement parts Do not use the thermometer with any part of the case or cover removed Model UT321 322 323 325 OPERATING MANUAL 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 e Match the and polarities of the battery with the battery case Table 2 International Symbols Refer to the manual for information about this feature CE Complies with European Union directives 22 Battery Model UT321 322 323 325 OPERATING MANUAL Getting Started Everything in this Users Manual applies to all Models of UT321 UT322 UT323
3. shows OFF which means disabling the sleep mode Changing the Line Frequency 1 2 Press SETUP until the display shows LINE Press A or V to select 60Hz or 50Hz Setting the Time akWN Press SETUP until the display shows S T Press ENTER to toggle between minutes second m s and hour minutes h m Press or V until the display shows the correct time The time is 24 hour format Holding down A or V causes the number to change more quickly The system time is the current meter running time if there is no changing on this setup option 19 Model UT321 322 323 325 OPERATING MANUAL 6 The system time is counted when the user turning on the thermometer It zeros automatically when the electricity is cut Setting the Low Limit Alarm Lo Only UT323 and UT325 1 Press SETUP until the display shows Lo 2 Press A or V until the display shows the correct low limit alarm 3 Holding down A or V causes the number to change more quickly 4 Press ENTER to turn the low limit alarm off the display shows OFF Press ENTER again to turn the low limit alarm on the display shows the low limit alarm reading When the tested temperature is over the limit the thermometer beeps The minimum reading of low alarm is the minimum measuring range of each type of thermocouple 7 The maximum reading of the low alarm is either the high alarm reading minus 1 or the maximum reading of measuring range of each type of thermocoupl
4. adings in memory You choose the length of 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 pressingkorW Holding downAor 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 manually as the auto store feature will be disabled 17 Model UT321 322 323 325 OPERATING MANUAL Changing the Thermocouple Type 1 Press SETUP until the display shows TYPE 2 Press A or Vto select the thermocouple type you want including K J E type UT323 and UT325 have extra R S and N type Changing the Offset T1 1 Press SETUP until the display shows OFFSET and T1 2 Press A or V until the display shows the correct reading The offset readings range Changing the Offset T2 1 Press SETUP until the display shows OFFSET and T2 2 Press A or V until the display shows the correct reading The offset readings range 18 Model UT321 322 323 325 OPERATING MANUAL Sleep Mode 1 2 3 4 Press SETUP until the display shows Press Aor Was need until the display shows the correct sleep mode time you want itis between 5 60 minutes Holding down or Wcauses the time to change more quickly When the sleep mode time is less than 5 minutes the display
5. and UT325 unless otherwise indicated To become familiar with the thermometer study the following Figure 1 and Table 3 describe the components e Figure 2 and Table 4 describe the display e 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 Components p E Bud urs2s THERMOMETER SETUP MAX MIN AVG USB RCL I 2 HOLD TYPE KJTERSN 758888 oo syst DATA OFFSET SHIFT 28888 85 88 Figure 1 Components 8 Model UT321 322 323 325 OPERATING MANUAL Table 3 Components Display Buttons Thermocouple T1 input Thermocouple T2 input UT323 UT325 only USB Port SIGN Port Over Limit Signal Output UT323 and UT325 only Battery Door 9V battery 6F22 Model UT321 322 323 325 OPERATING MANUAL o 9 9 Figure 2 Display Elements 10 Model UT321 322 323 325 OPERATING MANUAL Table 4 Display Elements Setup is in progress when the icon blinks Display readings of maximum minimum and average Data Transferring is in progress Logged readings are displayed when the icon blinks The thermocouple measurement includes an offset See Changing Setup Options Th
6. e For example gt The minimum reading of the low alarm of K type is 200 C The maximum reading of the low alarm of K type is either the high alarm O Oi reading minus 1 or 1372 20 Model UT321 322 323 325 OPERATING MANUAL Below table shows the measuring range of each type of thermocouple K type 200 0 C to 1372 C 328 0 F to 2501 F J type 210 0 C to 1200 C 346 0 F to 2192 F T type 250 0 C to 400 0 C 418 0 F to 752 0 F E type 150 0 C to 1000 C 238 0 F to 1832 F Setting the High Limit Alarm Hi Only UT323 and UT325 1 Press SETUP until the display shows 2 Press A or V until the display shows the correct high limit alarm 3 Holding down A or V causes the number to change more quickly 4 Press ENTER to turn the high limit alarm off the display shows OFF Press ENTER again to turn the high limit alarm on the display shows the high limit alarm reading When the tested temperature is over the limit the thermometer beeps The maximum reading of high alarm is the maximum measuring range of each type of thermocouple 7 The minimum reading of the high alarm is either the low alarm reading plus 1 or the minimum reading of measuring range of each type of thermocouple 21 ou Model UT321 322 323 325 OPERATING MANUAL For example gt The maximum reading of the high alarm of K type is 1372 C The minimum reading of the
7. e symbol of display backlight 11 Model UT321 322 323 325 OPERATING MANUAL Buttons RECALL C4 3 Ov O Es Figure 3 UT321 and UT323 buttons set 12 Model UT321 322 323 325 OPERATING MANUAL Figure 3 b UT322 and UT325 button set 13 Model UT321 322 323 325 OPERATING MANUAL Press to turn the thermometer on or off Press to turn the display backlight on and off Press to freeze or unfreeze the displayed readings Press to switch between Celsius C Fahrenheit F and Kelvin MAX MIN Press to step through the maximum minimum and average readings Press and hold to turn off this display Press to step through K J R S N type thermocouple Press to toggle showing the T1 T2 and T1 T2 differential temperature uT322 UT326 Measurement in the primary or secondary display 1 Press to enter USB mode and the USB icon blinks Press again to exi USB mode Press to start or stop logging STORE See Using Memory Starting and Stopping Logging Press to show logged readings 14 Model UT321 322 323 325 OPERATING MANUAL Table 5 Buttons Press to start or exit Setup SETUP Press to scroll the Setup option you want to change See Changing Setup Options A After entering the Setup mode press to increase the displayed setting See Changing Setup Options After entering the Setup mode press to dec
8. ff The display shows on or oFF thermometer is default as oFF 3 You can self debug the thermometer when the Debug feature is turned on Refer to Measuring Temperatures Debug 24 Model UT321 322 323 325 OPERATING MANUAL Measuring Temperatures Connecting a Thermocouple Thermocouples are colour coded by type 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 thermometer for the correct thermocouple type To change the thermocouple type see Changing Setup Options 25 Model UT321 322 323 325 OPERATING MANUAL Displaying Temperatures 1 Press FK to select the correct temperature scale 2 Hold or attach the thermocouple s to the measurement location The temperature reading appears in the selected display Holding the Displayed Temperatures 1 Press HOLD to freeze the readings on the display The display shows HOLD 2 Press HOLD again to turn off the HOLD function Turning on and off of display backlight 1 Under temperature measurement mode press 9 to turn the display backlight on 2 Press je again to turn off the display backlight The display backlight will not automatically off Viewing the MIN MAX and AVG Readings 1 Press MIN MAX to step through the maximum MAX minimum MIN or the average AVG readin
9. gs 2 Press and hold MIN MAX to exit MIN MAX mode 26 Model UT321 322 323 325 OPERATING MANUAL Using the Offset to Adjust for Probe Errors Use the offset option in Setup to adjust the thermometer s readings to compensate for the errors of a specific thermocouple 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 Setup change the offset until the display reading matches the calibration temperature See Changing Setup Options Over Limit Alarm Only UT323 and UT325 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 Over Limit Signal Output Only UT323 and UT325 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 27 Model UT321 322 323 325 OPERATING MANUAL Debug Only UT323 and UT325 After entering the Debug mode you can self debug Below is the procedure Debug point K and J type 180 C 0 C and 900 C T type 180 C 0 C and 400 C E type 140 C 0 C and 900 C R and S type 0 C and 1200 N type 180 C 0 C and 1200 C Remark 0 C only
10. high alarm of K type is either the low alarm reading plus 1 or 200 C Below table shows the measuring range of each type of thermocouple K type 200 0 C to 1372 C 328 0 F to 2501 J type 210 0 C to 1200 346 0 F to 2192 F T type 250 0 C to 400 0 418 0 F to 752 0 F E type 150 0 C to 1000 C 238 0 F to 1832 F 22 Model UT321 322 323 325 OPERATING MANUAL Enabling or Disabling Over Limit Signal Output Only UT323 and UT325 1 Press SETUP until the display shows SI 2 Press Aor to turn the over limit signal output on or off The display shows on or oFF 3 After setting the high or low limit alarm and turning on the over limit signal output the SIGN port of the thermometer will output the corresponding signal if the tested temperature is over or under the high or low limit When the tested temperature is over the high limit the SIGN port will output the high electric level signal When the tested temperature is under the low limit the SIGN port will output around 10Hz pulse signal Enabling or Disabling Normal Temperature Compensation NTC 1 Press SETUP until the display shows NTC 2 Press or V to turn normal temperature compensation on or off The display shows 23 Model UT321 322 323 325 OPERATING MANUAL Enabling or Disabling Debug Only UT323 and UT325 1 Press SETUP until the display shows DEBUG 2 Press A or V to turn Debug on or o
11. n INTO Enabling or Disabling Debug 5 Measuring Temperatures gee ee JP n Connecting a Thermocouple lt Displaying Temperatures i Holding the Displayed Tenpera Turning on and off of display backlight Viewing the MIN MAX and AVG Readings M Using the Offset to Adjust Probe Errors n H Over Limit Alarm Over Limit signal Output Debug LLL LLLLL LL L LLST C LAa LLGLLLGX4 Using Memory M Starting and Stopping Logging 3522 22 57 Viewing Logged Readings Clearing Memory Communicating with a PC Model UT321 322 323 325 OPERATING MANUAL Title Page 32 Replacing the Battery na 32 Cleaning the Case 32 Specifications r 33 Environmental AA General c 33 Electrical MMM 33 Model UT321 322 323 325 OPERATING MANUAL Safety Information The Uni Trend Model UT321 UT322 UT323 and UT325 Thermometer
12. need to debug k type Debug method 1 Connect T1 and T2 to standard voltage source 2 Standard voltage source input the corresponding voltage of debug point 3 Press HOLD to freeze the debug data 4 Normal Temperature debug Press MAX MIN when the thermometer is at Debug mode secondary display 1 shows the offset reading Secondary display 2 shows the normal temperature Press V to adjust the offset reading the offset range is 6 6 28 Model UT321 322 323 325 OPERATING MANUAL Remark The corresponding table between temperature and voltage refer to BS EN 60584 1 1996 Before carrying out debug to ensure your standard source has enough accuracy It is at your own responsibility if the thermometer has too big accuracy deviation is caused by the standard source does not have enough accuracy 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 Starting and Stopping Logging 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 as 00 00 Press ENTER each time you want to store logged readings in memory The secondary 29 Model UT321 322 323 325 OPERATING MANUAL display 1 shows
13. rating Temperature Humidity General Certification Safety EN61326 2006 EN55022 2006 and EM55024 1998 A1 A2 33 Model UT321 322 323 325 OPERATING MANUAL Electrical Function UT321 UT322 UT323 UT325 Input Protection Type KJ TE J T EeR S N Input T1 T1 T2 T1 T1 T2 K type 200 0 C to 1372 C 328 0 F to 2501 F Measurement J type 210 0 C to 1200 C 346 0 F to 2192 F Range T type 250 C to 400 0 C 418 F to 752 0 F E type 150 0 C to 1000 C 238 0 F to 1832 30 0 1 C F K lt 1000 T type below 200 C and R Display Resolution _ type S type is 1 C F K 1 0 C F K gt 1000 K J Measurement 6 si 13 DS Accuracy 0 5 0 8 C 1 6 F S type 0 2 2 C 4 F N type 0 2 1 5 C 3 F 34 Model UT321 322 323 325 OPERATING MANUAL Function UT321 UT322 UT323 UT325 Input Protection Below 10 add 0 5 C Below 200 C add 2 sa Type Below 200 C for reference only Sampling Rate 50 times per second Updates 2 3 times per second Time Relative Time Data Store 0 99 sets Logging Interval Thermocouple Type Offset T1 Offset T2 UT322 and UT325 only Sleep Mode Setup Line Frequency Time High Low Limit UT323 and UT325 only Over Limit Signal Output UT323 and UT325 only Normal Temperature Compensa
14. rease the displayed setting v See Changing Setup Options Confirm button ENTER See Changing Setup Options 15 Model UT321 322 323 325 OPERATING MANUAL Using the Thermometer 1 Plug the thermocouple s into the input connector s 2 Press the power button to turn on the thermometer 3 Set the type of thermocouple s to be same of the type plug into the input connector s If no thermocouple is plugged into the selected input or the thermocouple i is open and the over range positive deviation is too big the display shows _ Changing Setup Options 9 Use Setup to change the following settings 9 Logging intervals Thermocouple types Offset 1 Offset T2 UT322 and UT325 only gt Sleep Mode mp Line Frequency Time S T Limit Alarm Lo UT323 UT325 only High Limit Alarm Hi UT323 and UT325 only mp Over Limit Signal Output SI ON OF Fm UT323 and UT325 only Normal Temperature Compensation NTC ON OFF mp DEBUG ON OFF UT323 and UT325 only mp Save setting and return to normal measurement mode 16 Model UT321 322 323 325 OPERATING MANUAL Entering and Exiting Setup When the thermometer is in Setup mode the display shows and blinks SETUP Press SETUP to start or exit Setup Press SETUP to scroll the Setup option you want to change after Changing the Logging Interval The logging interval determines how often the thermocouple stores logged re
15. s the thermometer are microprocessor based digital thermometers designed to use external J K T E R S and N type thermocouples temperature probes as temperature sensors UT321 T1 suitable for K J T and E type thermocouples UT322 T1 and T2 suitable for K J and E type thermocouples UT323 T1 suitable for K J T E R S and N type thermocouples Eguipped 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 manual Otherwise the protection provided by the meter may be impaired Model UT321 322 323 325 OPERATING MANUAL Refer to safety information in Table 1 and the international symbols in Table 2 Table 1 Safety Information A Warning A warning identified conditions and actions that pose hazards to the user To avoid electrical shock or personal injury follow these guidelines Before using the thermometer inspect the case Do not use the thermometer if it appears damaged Look for cracks or missing plastic Pay particular attention to the insulation around the connectors Disconnect the thermocouple s from the thermometer before opening the case Replace the batteries as soon as the battery indicator Ed appears The possibility
16. the logged reading Each presses of ENTER will automatically store the logged readings in the next memory location Press A or V could change the memory location the empty location shows a 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 Viewing Logged Readings 1 2 Press RECALL to view logged readings The display shows RCL and blinks Press or V to scroll through the logged readings the default reading is the last stored reading when exiting the logging The recalled reading will automatically toggle to the measurement unit when logging The logged readings will automatically toggle to the temperature unit during logging The secondary display 1 shows its memory location The secondary display 2 shows its time stamp The primary display shows each logged reading Press ENTER causes the readings to change more quickly until memory location reaches 99 30 Model UT321 322 323 325 OPERATING MANUAL Clearing Memory 1 Press STORE to enter logging mode the display shows DATA and blinks 2 Press and hold down STORE 2 seconds the display shows CLR 3 Press ENTER
17. tion Debug UT323 and UT325 only Over Limit Alarm N A Yes Over Limit Signal N A Yes Power One piece of 9V NEDA1604 or 6F22 or 006P 35 Model UT321 322 323 325 OPERATING MANUAL Accuracy is specified for ambient temperatures between 18 C 60 F and 28 C 82 F for a period of 1 year operating temperatures 10 C 50 C 14 F 122 F The above specifications do not include thermocouple error probe tolerance is not included in above technical index END xx 36 Model UT321 322 323 325 OPERATING MANUAL Copyright 2008 Uni Trend Group Limited All rights reserved Manufacturer Uni Trend Technology Dongguan Limited Dong Fang Da Dao Bei Shan Dong 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 37
18. 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 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 be back to normal when the interference is removed 31 Model UT321 322 323 325 OPERATING MANUAL Maintenance Replacing the Battery Replace the batteries as soon as the battery indicator Edi 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 1 piece of 9V battery 6F22 Replace the battery door and tighten the screw Cleaning the Case Use soap and water or mild commercial cleaner Wipe with a damp sponge or soft rag 32 Model UT321 322 323 325 OPERATING MANUAL Specifications Environmental 10 C to 50 14 F to 122 F Storage Temperature 40 C to 60 C 142C to 414020 Non condensing 10 C 50 F 95 RH 10 C to 30 C 50 F to 86 F 75 RH 30 C to 40 C 86 F to 104 F 45 RH 40 C to 50 C 104 F to 122 F Ope
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