UNI-T UT197 User Manual
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UNI-T UT197 User Manual

UNI-T UT197 User Manual

Industrial digital multimeter
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UT197 User Manual
UT197
Industrial Digital Multimeter
User manual
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Summary of Contents for UNI-T UT197

  • Page 1 UT197 User Manual UT197 Industrial Digital Multimeter User manual 1 / 40...
  • Page 2 UT197 User Manual Preface Thank you for purchasing a new Uni-Trend meter, in order to use this meter correctly, please read the full text of the manual carefully before use, especially the section on "Safety Information". If you have read the full text of this manual, it is recommended that you keep it in a safe place, with the instrument or in a place where you can consult it at any time, so that you can consult it in future use.

  • Page 3: Table Of Contents

    UT197 User Manual Contents Overview Features Unpack to Check Safety Information Electrical Symbols General Characteristics External Structure LCD Display Rotary switch Functions of Buttons Operating Instructions Technical Specifications Bluetooth Software Operation Maintenance and Repair 3 / 40...

  • Page 4: Overview

    IP67. The Meter can withstand a maximum of 5 meters drop. Designed with wide working temperature range, (-40° C~55° C), UT197 meets the needs of users in humid, sandy, cold and other harsh outdoor extreme environment measurements.

  • Page 5: Unpack To Check

    UT197 User Manual 12) Min/max values are provided to record signal fluctuations, and 250uS peak capture function is also provided. 13) Auto backlight and fluorescent buttons for improved visibility. 14) Plug-in UT-CS07 AC/DC clamp to extend the current range to 100A/1000A...

  • Page 6: Safety Information

    UT197 User Manual 4、Safety Information Please pay attention to the "Warning Signs and Warning Words". A warning indicates a situation or action that poses a danger to the user and may cause damage to the meter or device under test.

  • Page 7: Electrical Symbols

    UT197 User Manual 14) Do not store and use this Meter in high temperature, high humidity, flammable, explosive and strong electromagnetic field environments. 15) Please use a soft cloth and neutral detergent to clean the Meter casing, do not use abrasives and solvents to prevent the casing from being corroded, so as not to damage the instrument and endanger safety.

  • Page 8: General Characteristics

    UT197 User Manual 6、General Characteristics 1) The overload protection voltage between the input terminal and the ground is 1000V 2) Fuse protection for uA/mA input terminal： Fuse 600mA/1000V Φ6.35×31.8mm(breaking capacity: 10KA） fast-acting porcelain tube Fuse protection for A terminal：Fuse 11A/1000V Φ10.3×38 mm (breaking capacity: 30KA）...

  • Page 9: External Structure

    UT197 User Manual 7. External Structure (Figure 1) Figure 1 1．LCD display 2．Buttons 3．Functional knob 4. V terminal 5．uA/ mA terminal 6．A terminal 7．COM terminal 8．Protective holster with bracket 9. Magnetic hanger area 10. NCV sensing area 11. Battery cover 12.

  • Page 10: Lcd Display

    UT197 User Manual 8. LCD Display（Figure 2） Figure 2 : Bluetooth communication symbol : AC/DC current probe range prompt -MIN: Maximum, Minimum, Peak Maximum, Peak Minimum, etc : Low-pass filter voltage measurement mode prompt :Circuit on-off measurement prompt : Diode measurement prompt...

  • Page 11: Rotary Switch

    UT197 User Manual :Manual range prompt .: Range prompt :Temperature measurement display prompt :Voltage unit prompt :Resistance unit prompt :Frequency unit prompt :Current and capacitance unit prompts Duty cycle and current conversion ratio unit prompt ： :Auto shutdown prompt 9. Rotary switch（Figure 3 ）...

  • Page 12: Functions Of Buttons

    UT197 User Manual mV AC/DC voltage measurement, frequency/duty cycle measurement Continuity measurement/resistance measurement/diode measurement/capacitance measurement Celsius temperature measurement/Fahrenheit temperature measurement AC/DC current mA/A measurements, frequency/duty cycle measurements, %4-20mA AC/DC current uA measurements, frequency/duty cycle measurements Plug-in current probe measurement/NCV inductive detection 10、Functions of Buttons...
  • Page 13 UT197 User Manual 1．In auto range mode, short press the RANGE button once to enter the manual range mode (LCD does not display "AUTO") and be in the current range, continue to short press to select the range cyclically. Press and ACV、DCV、Ω、uA、mA、A、...

  • Page 14: Operating Instructions

    UT197 User Manual 11、Operating Instructions Please pay attention to check the built-in AA 1.5V x3 batteries before use. If the power is low after the Meter is turned on, the " " symbol will be displayed, in order to ensure the test accuracy, the battery must be replaced in time before use.
  • Page 15 UT197 User Manual wire circuit to obtain more accurate measurements. ● Do not input voltages higher than 600V. ● When measuring high voltages, special care should be taken to avoid electric shock. ● When the measured voltage is >30V, the high-voltage alarm symbol is displayed.
  • Page 16 UT197 User Manual 5) Short press the Hz% button to select frequency measurement, and read the frequency value of the current measured voltage from the display. Warning： ● Input coupling mode: AC coupling ● The input impedance of the Meter is about 10 MΩ, and the measurement error will be caused when the Meter measures the high-impedance circuit.
  • Page 17 UT197 User Manual 4) Long press the “ ” button to enter the high-resolution 600000-count display mode, and long press again to exit the high-resolution display mode. 5) Short press the “ ” button to enter the AC+DC measurement display mode, short press again to select AC+DC->DC->AC.
  • Page 18 UT197 User Manual 2) Set the rotary switch to , press the SELECT button to select the AC mV voltage measurement, and then connect the test lead in parallel to the power supply or load to be measured. 3) Read the true RMS value of the AC mV voltage from the display.
  • Page 19 UT197 User Manual 6. Continuity measurement（Figure 9） Figure 9 1) Connect the red test lead to the "V" terminal and the black test lead to the "COM" terminal. 2) Set the rotary switch to “ ”, short press the SELECT button to switch to the...
  • Page 20 UT197 User Manual 7. Resistance measurement（Figure 10） Figure 10 1) Connect the red test lead to the "V" terminal and the black test lead to the "COM" terminal. 2) Set the rotary switch to “ ”, short press the SELECT button to switch to the resistance measurement, and then connect the test lead in parallel to both ends of the load of the circuit under test.
  • Page 21 UT197 User Manual 8. Diode measurement（Figure 11） Figure 11 1) Connect the red test lead to the "V" terminal and the black test lead to the "COM" terminal. 2) Set the rotary switch to“ ”, short press the SELECT button to switch to the diode measurement, and then connect the test lead in parallel to both ends of the test diode.
  • Page 22 UT197 User Manual 9. Capacitance measurement（Figure 12） Figure 12 1) Connect the red test lead to the "V" terminal and the black test lead to the "COM" terminal. 2) Set the rotary switch to “ ”, short press the SELECT button to switch to the capacitance measurement, and then connect the test lead in parallel to both ends of the capacitance being measured.
  • Page 23 UT197 User Manual 10. Current probe (ACA/DCA) measurement（Figure 13） Figure 13 1) Connect the red test lead to the "V" terminal and the black test lead to the "COM" terminal. 2) Set the rotary switch to “ ”, short press the SELECT button to switch to ACA or DCA measurement, press the RANGE button to select the current probe range 100A (10mV/A) and 1000A (1mV/A), and then clamp the current probe to the conductor to be measured.
  • Page 24 UT197 User Manual 11. AC/DC A measurement（Figure 14） 1) Set the rotary switch to “ ”, connect the red test lead to “A” terminal and the black test lead to “COM” terminal. When connected to“A” terminal, the Meter will automatically switch to A measurement position, then short press the SELECT button to switch to ACA or DCA measurement position.
  • Page 25 UT197 User Manual ● Correct terminal, functional position and range must be used for measurement. ● When measuring a current greater than 10A, for safe use, the measurement time should be less than 30 seconds each time, and the interval time should be greater than 15 minutes.
  • Page 26 UT197 User Manual 5) Short press the SELECT button to switch to %4-20mA measurement function to display the current conversion ratio, the formula is as follows: Displayed value %＝（Measured current－4mA）/(20mA-4mA) Warning： ●Before measurement, please check whether the fuse of the Meter is in good condition. The detection method is as follows: When switching to the non-current position, connect the test lead to the "uA mA"...
  • Page 27 UT197 User Manual directly from the display. The AC current measurement is displayed as the true RMS value. 3) In ACuA position, short press the Hz% button to select the frequency or duty cycle measurement, and read the frequency value or duty cycle value of the measured current from the display.
  • Page 28 UT197 User Manual 1) Set the rotary switch to “ ”, then the LCD will show OL. The room temperature will be displayed if the test lead is shorted. 2) Insert the temperature K-type plug into the corresponding hole as shown in the diagram.
  • Page 29 UT197 User Manual Warning： ● Please make the NCV sensing end close to the measured electric field, otherwise the measurement sensitivity will be affected. ● When the voltage of the measured electric field is greater than 100V AC, please pay attention to observe whether the conductor of the measured electric field is insulated to avoid injury to personal safety.

  • Page 30: Technical Specifications

    UT197 User Manual 12、Technical Specifications Accuracy：± (a% reading + b digit), the warranty period is one year. Ambient temperature：23℃± 5℃ Relative humidity：<75% Warning: Temperature condition of accuracy measurement: For 18° C to 28° C, the ambient temperature fluctuation range is stable within ± 1° C. At a temperature < 18 ° C or > 28 ° C, a temperature coefficient error of 0.1 x (specified accuracy)/°...
  • Page 31 UT197 User Manual ± (0.7%+40） 5k～20kHz ± (4.0%+40） 20k～100kHz ± (0.4%+30） 45～1kHz ± (0.5%+40） 1k～5kHz 600.00V 0.01V ± (0.7%+40） 5k～20kHz Unspecified 20k～100kHz ± (0.5%+40） 45～1kHz ± (0.8%+40） 1k～5kHz 1000.0V 0.1V Unspecified 5k～20kHz Unspecified 20k～100kHz ● Displaying TRMS value ● Input impedance: ≥10MΩ. Input coupling mode: ACV is AC coupling ●...
  • Page 32 UT197 User Manual 600000 counts: Remark Overload protection Range Resolution ± (0.015%+10） 600.000mV 0.001mV ± (0.015%+10） 6.00000V 0.00001V ± (0.015%+10） 1000Vrms 60.0000V 0.0001V ± (0.015%+10） 600.000V 0.001V ± (0.08%+10） 1000.00V 0.01V ●Input impedance: ≥10MΩ ● To ensure accuracy, the input signal shall be 1%-100% of the current range.
  • Page 33 UT197 User Manual ●To ensure the accuracy, the input signal is required to be 10%-100% of the current range, and the index is only defined for pure DC voltage and pure AC voltage signals, and the mixed signal is calculated according to the formula Note: 10% to 15% of range: 80 counts are added for accuracy: (〉1kHz)
  • Page 34 UT197 User Manual 7. Continuity Remark Overload protection Range Resolution Circuit disconnected: Resistance value is set at about ≥150Ω (the buzzer keeps 1000Vrms 600.00Ω 0.01Ω silent) Circuit connected: Resistance value set at about ≥150Ω (the buzzer sounds) ●Open-circuit voltage is about ２V.
  • Page 35 UT197 User Manual ± (0.7%+50） 1k～5kHz Unspecified 5k～10kHz ● To ensure accuracy, the input signal shall be 5%-100% of the current range ● For 10A to 20 A, maximum continuous measurement time is 30 seconds, then stop measurement for 15 minutes at least; For> 10.00 A, for reference only; for > 20 A, OL is displayed.
  • Page 36 UT197 User Manual 12. AC+DC current Accuracy± (a% reading + b Overload Frequency Range Resolution response digit) protection ± (1.0%+5） 45～1kHz ± (1.5%+8） 600.0uA 0.1uA 1k～5kHz ± (2.5%+8） 5k～10kHz ± (1.0%+5） 45～1kHz ± (1.5%+8） 1k～5kHz 6000uA Fuses ± (2.5%+8） 5k～10kHz F 0.6A H...
  • Page 37 UT197 User Manual 14. Duty cycle Overload Accuracy± (a% reading + b digit) Range Resolution protection 1000Vrms ± (1.2%+5） 10%~90% 0.1% ● Duty cycle is only available for square wave measurements, and the input amplitude shall be: 10Hz～10kHz：1Vpp≤input amplitude≤20Vpp; ● For mV position, select the duty cycle by Hz%.

  • Page 38: Bluetooth Software Operation

    For iOS 3. Use 3.1) Open the Bluetooth functions of both the Clamp Meter and mobile phone, tap the “UNI-T Smart Measure” APP icon on your phone desktop to open the software, then the software enters the navigation interface and searches nearby Bluetooth-enabled meters automatically. After that, select the corresponding meter and make connection.

  • Page 39: Maintenance And Repair

    For the operating instructions about these functions, please refer to the “UNI-T Smart Measure” User Manual (In the APP, tap the menu button, “Setting” button, and then “Help Guide” button for the User Manual).
  • Page 40 UT197 User Manual polarities when installing a new battery. Warning： Do not mix old and new batteries, do not mix alkaline, carbon, rechargeable batteries. 2) When the voltage is mismeasured or the overcurrent burns out the fuse during operation, some functions of the product cannot work normally, and the fuse should be replaced immediately.

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