UNI-T UT322 Operating Manual
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Model UT321/322/323/325: OPERATING MANUAL
Table of Contents
Entering and Exiting Setup
Changing the Logging Interval
Changing the Thermocouple Type
Changing the Offset (T1)
Changing the Offset (T2)
Changing the Line Frequency
Setting the Time
Setting the Low Limit Alarm (Lo)
Setting the High Limit Alarm (Hi)
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Table of Contents
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Summary of Contents for UNI-T UT322
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Page 1: Table Of Contents
Model UT321/322/323/325: OPERATING MANUAL Table of Contents Title Page Safety Information Getting Started Components Display Elements Buttons 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... -
Page 2: Title Page
Model UT321/322/323/325: OPERATING MANUAL Title Page Enabling or Disabling Over Limit Signal Output Enabling or Disabling Normal Temperature Compensation (NTC) Enabling or Disabling Debug Measuring Temperatures Connecting a Thermocouple Displaying Temperatures Holding the Displayed Temperatures Turning on and off of display backlight Viewing the MIN, MAX, and AVG Readings Using the Offset to Adjust Probe Errors Over Limit Alarm... - Page 3 Model UT321/322/323/325: OPERATING MANUAL Title Page Maintenance Replacing the Battery Cleaning the Case Specifications Environmental General Electrical...
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Page 4: Safety Information
UT321: T1, suitable for K-, J-, T- and E- type thermocouples UT322: 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. - Page 5 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 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.
- Page 6 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.
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Page 7: Getting Started
Model UT321/322/323/325: OPERATING MANUAL Getting Started Everything in this Users Manual applies to all Models of UT321, UT322, UT323 and UT325 unless otherwise 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. -
Page 8: Components
Model UT321/322/323/325: OPERATING MANUAL Figure 1. Components... - Page 9 Model UT321/322/323/325: OPERATING MANUAL Table 3. Components Display Buttons Thermocouple T1 input Thermocouple T2 input (UT323 and UT325 only) USB Port SIGN Port - Over Limit Signal Output (UT323 and UT325 only) Battery Door 9V battery (6F22 )
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Page 11: Display Elements
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 Low battery. Replace the battery The thermocouple type The temperature units Secondary Display 1... - Page 12 Model UT321/322/323/325: OPERATING MANUAL Figure 3-a UT321 and UT323 buttons set...
- Page 13 Model UT321/322/323/325: OPERATING MANUAL Figure 3-b UT322 and UT325 button set...
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Page 14: Buttons
Model UT321/322/323/325: OPERATING MANUAL Table 5. Buttons 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 HOLD ºC ºF Press to switch between Celsius (ºC), Fahrenheit(ºF), and Kelvin (K) Press to step through the maximum, minimum, and average readings. - Page 15 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”) 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.
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Page 16: Using The Thermometer
“_ _ _ _“. 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... - Page 17 Model UT321/322/323/325: OPERATING MANUAL 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 The logging interval determines how often the thermocouple stores logged readings in memory.
- Page 18 Model UT321/322/323/325: OPERATING MANUAL 1. Press SETUP until the display shows TYPE. 2. Press to select the thermocouple type you want including K-, J-, E- type (UT323 and UT325 have extra R-, S- and N- type). 1. Press SETUP until the display shows OFFSET and T1 2.
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- Page 21 Model UT321/322/323/325: OPERATING MANUAL Below table 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)
- Page 22 Model UT321/322/323/325: OPERATING MANUAL For example: The maximum reading of the high alarm of K type is +1372ºC. The minimum reading of the high alarm of K type is either 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)
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- Page 24 Model UT321/322/323/325: OPERATING MANUAL...
- Page 25 Model UT321/322/323/325: OPERATING MANUAL Measuring Temperatures Thermocouples are colour coded by type based on the North American ANSI Colour Code: Type Colour Type Colour Black Green Yellow Green Blue Orange 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”.
- Page 26 Model UT321/322/323/325: OPERATING MANUAL 1. Press ºC ºFK 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 1. Press HOLD to freeze the readings on the display. The display shows HOLD. 2.
- Page 27 Model UT321/322/323/325: OPERATING MANUAL 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).
- Page 28 Model UT321/322/323/325: OPERATING MANUAL After entering the Debug mode, you can self-debug. 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...
- Page 29 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.
- Page 30 Model UT321/322/323/325: OPERATING MANUAL display 1 shows the logged reading. Each presses of ENTER will automatically store the logged readings in the next memory location. Press could change the memory location, the empty location shows “- - - - - ”. 5.
- Page 31 Model UT321/322/323/325: OPERATING MANUAL 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 to delete all the logged readings from memory. It is not possible to delete the logged readings one by one.
- Page 32 Model UT321/322/323/325: OPERATING MANUAL 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 1 piece of 9V battery (6F22). Replace the battery door and tighten the screw.
- Page 33 Model UT321/322/323/325: OPERATING MANUAL Specifications -10ºC to 50ºC Operating Temperature (14ºF to 122ºF) -40ºC to + 60ºC Storage Temperature (-14ºC to +140ºC) Non condensing <10ºC (<50ºF) Humidity 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...
- Page 34 Model UT321/322/323/325: OPERATING MANUAL Function UT321 UT322 UT323 UT325 Input Protection Type K, J, T, E K, J, T, E, R, S, N T1, T2 T1, T2 Input K type: -200.0ºC to +1372ºC (-328.0 ºF to +2501 ºF) J type: -210.0ºC to +1200ºC (-346.0 ºF to +2192 ºF)
- Page 35 Relative Time Data Store 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 Setup UT325 only), Over Limit Signal Output (UT323 and UT325 only), Normal Temperature Compensation,...
- Page 36 Model UT321/322/323/325: OPERATING MANUAL 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 error,probe tolerance is not included in above technical index. ** END **...
- Page 37 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...