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Jula UT131 User Manual
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Jula UT131 User Manual

Palm size multimeter
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UT131 Palm Size Multimeter
UT131 Palm Size Multimeter
User Manual
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Summary of Contents for Jula UT131

  • Page 1 UT131 Palm Size Multimeter UT131 Palm Size Multimeter User Manual...

  • Page 2: Open Box Inspection

    The new generation UT131 series products redefine the performance standards for entry-level digital multimeter. The innovative industrial design ensures the products have 2 meters impact resistance. The new LCD display layout provides a clear display for better user experience. The UT131 series ensure safe operation in CAT II 250 V environment.
  • Page 3 UT131 Palm Size Multimeter K-type Thermocouple ----------1 pc (UT131C only)  Warning: Please carefully read “Safe Operation Rule” before using the device. Ⅲ. Safe Operation Rule 1). Safety certification This device strictly follows the CE standards: EN 61010-1: 2010, EN 61010-2-030:2010, EN 61326:2013, as well as CAT II: 250V, RoHS, pollution grade II, and double insulation standards.
  • Page 4 UT131 Palm Size Multimeter When measuring the voltage higher than 60 VDC or 30 VACrms, keep your fingers behind the finger guard on the test lead in order to prevent electric shock. If the range of the voltage to be measured is unknown, the maximum range should be selected and then gradually decreased.
  • Page 5 UT131 Palm Size Multimeter AC/DC Electrical ground Double insulation Warning Ⅴ.Specification 1. The maximum voltage between the input terminal and the ground: 250Vrms 2. 10A terminal: Fuse 10 A 250 V Fast fuse Φ5×20 mm 3. mA/μA terminal: Fuse 200 mA 250 V Fast fuse Φ 5×20 mm 4.
  • Page 6 UT131 Palm Size Multimeter 8. Data hold function: symbol displays on screen when data hold function is activated 9. Low battery power: symbol displays on screen when battery power is low 10. Battery: AAA 1.5V * 2 11. Operating temperature: 0~40˚C (32˚F~104˚F) Storage temperature: -10~50˚C (14˚F~122˚F)
  • Page 7 UT131 Palm Size Multimeter In fields with more than 1 V/m radio frequency, the accuracy is not specified. Ⅵ. Structure (see Figure 1) Figure 1...
  • Page 8 UT131 Palm Size Multimeter 1. Display screen 2. Function keys 3. Functional dial 4. 10A input jack 5. COM jack 6. Remaining inputs jack Ⅶ.Key Functions 1) UT131A: * SEL/REL: press this key to switch between AC and DC modes for mV , I , and REL...
  • Page 9 UT131 Palm Size Multimeter positions. : Press to enter or exit data hold mode. Long press over 2 seconds to turn on/off backlight. 2) UT131B/C/D: *. HOLD/SEL: Press to enter or exit data hold mode In continuity/diode mode, press to cycle switch between the two modes : Press to turn on/off backlight.
  • Page 10 UT131 Palm Size Multimeter voltage or current must not exceed the values listed on the device. 1. AC/DC voltage measurement (see Figure 2b) 1) Switch the dial to “V~” position. 2) Insert the black test lead into the COM jack, the red test lead into the “VΩmA” jack. Connect test leads with the load in parallel.
  • Page 11 UT131 Palm Size Multimeter Notes: *. Do not measure voltage over 250Vrms, or it may expose users to electric shock and damage the device. If the range of the voltage to be measured is unknown, select the maximum range and reduce accordingly.
  • Page 12 UT131 Palm Size Multimeter Notes: *.Before measuring resistance, switch off the power supply of the circuit, and fully discharge all capacitors. *. If the resistance when shorted is more than 0.5Ω, please check if test leads are loosened or damaged.
  • Page 13 UT131 Palm Size Multimeter 1) Switch the dial to “ ” position. 2) Insert the black test lead into the COM jack, the red test lead into the “VΩmA” jack. Connect test leads with the points to be tested in parallel 3) Measured points’...
  • Page 14 UT131 Palm Size Multimeter capacitors 5. Capacitance Measurement (only for UT131A, see Figure 2a) 1) Switch the dial to capacitance test. 2) Insert the black test lead into the COM jack, the red test lead into the “VΩmA” jack. Connect test leads with the capacitor in parallel 3) When there is no input, the device displays a fixed value (intrinsic capacitance).
  • Page 15 UT131 Palm Size Multimeter 6. DC Measurement (see Figure 3) 1) Switch the dial to DC test. 2) Insert the black test lead into the COM jack, the red test lead into the “VΩmA” jack. Connect test leads with the tested circuit in series.
  • Page 16 UT131 Palm Size Multimeter Notes: *. Before measuring, switch off the power supply of the circuit and carefully check the input terminal and range position. *. If the range of the measured current is unknown, select the maximum range and then accordingly reduce.
  • Page 17 UT131 Palm Size Multimeter 8. Battery Measurement (only for UT131B, see Figure 4) 1) Switch the dial to battery test. 2) Insert the black test lead into the COM jack, the red test lead into the “VΩmA” jack. Connect test leads with the battery in parallel.
  • Page 18 UT131 Palm Size Multimeter Figure 4 1.5V battery -18-...
  • Page 19 UT131 Palm Size Multimeter Load Resistance: 30 Ω: “Good”: Voltage≥1.31V “Low”: Voltage 0.95V~ 1.31V “Bad”: Voltage ≤ 0.94V 9V battery -19-...
  • Page 20 UT131 Palm Size Multimeter Load Resistance: 900Ω: “Good”: Voltage≥7.8V “Low”: Voltage 5.7V~ 7.7V “Bad”: Voltage ≤ 5.6V * 12V battery -20-...
  • Page 21 UT131 Palm Size Multimeter Load Resistance: 60Ω: “Good”: Voltage≥10.5V “Low”: Voltage 7.6V~ 10.4V “Bad”: Voltage ≤7.5V -21-...
  • Page 22 UT131 Palm Size Multimeter Notes: *. When the measured voltage is<0.2V (0.05V-0.19V), no indicator status will be displayed and the reading will flash for 3 seconds for every 6 second interval. 9. Temperature Measurement (only for UT131C, see Figure 5) 1) Switch the dial to temperature test.
  • Page 23 UT131 Palm Size Multimeter -23-...
  • Page 24 UT131 Palm Size Multimeter 10. NCV Measurement (only for UT131D, see Figure 6) Figure 6 -24-...
  • Page 25 UT131 Palm Size Multimeter 1) Switch the dial to NCV position 2) Place the device near the measured object. “-“ symbol indicates the intensity of the electric field. More “-“ and the higher the buzzer frequency, the higher the electric field intensity.
  • Page 26 UT131 Palm Size Multimeter 11. Others *. The device enters measurement status in 2 seconds after startup. *. The device automatically shuts down if there is no operation for 15 minutes. You can wake up the device by pressing any key.
  • Page 27 UT131 Palm Size Multimeter second period. During low power status, the device can still work. Voltage of the battery < 2.2V, a solid symbol appears, the device cannot work. Ⅸ.Technical specification  Accuracy: ±(% of reading + numerical value in least significant digit slot), 1 Year Warranty ...
  • Page 28 UT131 Palm Size Multimeter 200.0V 0.1V ±(0.7%+3) 250V ±(0.7%+3)  Input impedance: about 10MΩ ,  Results might be unstable at mV range when no load is connected. The value becomes stable once the load is connected. Least significant digit ≤±3 ...
  • Page 29 UT131 Palm Size Multimeter  Input impedance: about 10MΩ ,  Frequency response: 40Hz ~ 400Hz, sine wave RMS (average response).  Max input voltage: ±250V, when the voltage≥ 610V, "OL " symbol appears.  Overload protection: 250Vrms(AC/DC) 3. Resistance...
  • Page 30 UT131 Palm Size Multimeter 20.00kΩ UT131A/B/C/D 0.01kΩ ±(0.8%+2) 200.0kΩ UT131A/B/C/D 0.1kΩ ±(0.8%+2) 20.00MΩ UT131A/B/C/D 0.01MΩ ± (1.2%+3) 200.0MΩ UT131A/D 0.1MΩ ± (5.0%+10)  Measurement result = reading of resistor – reading of shorted test leads  Overload protection: 250Vrms(AC/DC) 4. Continuity, Diode...
  • Page 31 UT131 Palm Size Multimeter Set Value: Open circuit: resistance≥50Ω, no beep. 0.1Ω Well connected circuit: resistance≤10Ω, continuous beeps. Open circuit voltage :2.1V , test current: about 1mA 0.001V Silicon PN junction voltage: 0.5 ~ 0.8V.  Overload protection: 250Vrms(AC/DC) 5. Capacitance(only for UT131A)
  • Page 32 UT131 Palm Size Multimeter 20.00nF 0.01nF ±(4%+8) 200.0nF 0.1nF ±(4%+8) 2.000μF 0.001uF ±(4%+8) 20.00μF 0.01uF ±(4%+8) 200.0μF 0.1uF ±(4%+8) 2.000mF 0.001mF ±(10%)  Overload protection: 250Vrms(AC/DC)  Tested capacitance≤200nF, adapt REL mode. 6. Temperature (only for UT131C) Range Resolution Accuracy -40~40˚C...
  • Page 33 UT131 Palm Size Multimeter >500~1000˚C ±(2.0%+4) -40~104˚F ±5˚F ˚F -40~1832˚F >104~932˚F 1˚F ±(1.5%+5) >932~1832˚F ±(2.5%+5)  Overload protection: 250Vrms (AC/DC)  K thermocouple is only applicable for temperature less than 250˚C/482˚F. 7. DC Current Range Mode Resolution Accuracy 200.0μA UT131A/B 0.1μA...
  • Page 34 UT131 Palm Size Multimeter  Input current> 10A , “OL” symbol appears with beeps  Overload protection 250Vrms μA mA range：F1 Fuse 0.2 A / 250V Φ 5×20 mm 10 A range： F2 Fuse 10 A /250V Φ 5×20 mm 8.
  • Page 35 UT131 Palm Size Multimeter  Frequency response: 40 -400 Hz.  Accuracy guarantee range: 5 -100% of the range, shorted circuit allows least significant digit≤2  Input current> 10.10A , “OL” symbol appears with beeps  Overload protection 250Vrms μA mA range：F1 Fuse 0.2A/250V Φ5×20 mm 10 A range: F2 Fuse 10A/250V Φ5×20mm...
  • Page 36 UT131 Palm Size Multimeter Battery replacement: To avoid false reading, replace the battery when the battery indicator appears. Battery Specification: AAA 1.5Vx2 1) Switch the dial to “OFF “position and remove the test leads from the input terminal. 2) Take off the protective case. Loosen the screw on battery cover, remove the cover to replace the battery.
  • Page 37 UT131 Palm Size Multimeter -37-...