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UT131 Palm Size Multimeter

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UT131 Palm Size Multimeter

User Manual

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Summary of Contents for UT131

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

Page 2: ...ter user experience The UT131 series ensure safe operation in CAT II 250 V environment The special features of each model are as follows UT131A 2mF capacitance test function UT131B Battery test with s...

Page 3: ...II 250V RoHS pollution grade II and double insulation standards 2 Safety instructions and Precautions 1 Do not use the device if the device or test leads appear damaged or if you suspect that the dev...

Page 4: ...itching ranges make sure to disconnect the test leads with the circuit to be tested It is strictly prohibited to switch the Ranges during the measurement 8 Do not use or store the device in high tempe...

Page 5: ...Vrms 2 10A terminal Fuse 10 A 250 V Fast fuse 5 20 mm 3 mA A terminal Fuse 200 mA 250 V Fast fuse 5 20 mm 4 Max display 1999 over range display OL update rate 2 3 times second 5 Range select Auto rang...

Page 6: ...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 Relative humidity 0 C 30 C 75 RH 30 C 40 C 50 RH Operating altitude 0 2000m 12 Dimension 134 77...

Page 7: ...UT131 Palm Size Multimeter 7 In fields with more than 1 V m radio frequency the accuracy is not specified Structure see Figure 1 Figure 1...

Page 8: ...e Multimeter 8 1 Display screen 2 Function keys 3 Functional dial 4 10A input jack 5 COM jack 6 Remaining inputs jack Key Functions 1 UT131A SEL REL press this key to switch between AC and DC modes fo...

Page 9: ...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 Operations To avoid false reading replace the battery...

Page 10: ...ust 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 V mA...

Page 11: ...um range and reduce accordingly Please pay extra attention when measuring high voltage in order to avoid electric shock Before using the device it is suggested to measure a known voltage for verificat...

Page 12: ...range the OL symbol will be displayed on the screen When measuring low resistance the test leads will produce 0 1 0 2 measurement error To obtain accurate measurement the measured value should subtrac...

Page 13: ...er will go off Notes Before measuring continuity switch off all power supplies and fully discharge all capacitors 4 Diode Measurement see Figure 2b 1 Switch the dial to position 2 Insert the black tes...

Page 14: ...ance measurement to ensure measurement accuracy the measured value must be subtracted from intrinsic capacitance Users can measure small capacity capacitors with relative measurement functions REL the...

Page 15: ...ultimeter 15 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 V mA jack Connect test leads with the tested circuit i...

Page 16: ...h the same type 10A jack Fuse 10A 250V 5 20mm V mA jack Fuse 0 2A 250V 5 20mm When measuring please do not connect the test leads with any circuit in parallel Otherwise there is a risk of damage to th...

Page 17: ...t 2 Insert the black test lead into the COM jack the red test lead into the V mA jack Connect test leads with the battery in parallel Red test lead at positive pole black test lead at negative pole 3...

Page 18: ...UT131 Palm Size Multimeter 18 1 5V battery Figure 4...

Page 19: ...UT131 Palm Size Multimeter 19 Load Resistance 30 Good Voltage 1 31V Low Voltage 0 95V 1 31V Bad Voltage 0 94V 9V battery...

Page 20: ...UT131 Palm Size Multimeter 20 Load Resistance 900 Good Voltage 7 8V Low Voltage 5 7V 7 7V Bad Voltage 5 6V 12V battery...

Page 21: ...UT131 Palm Size Multimeter 21 Load Resistance 60 Good Voltage 10 5V Low Voltage 7 6V 10 4V Bad Voltage 7 5V...

Page 22: ...ds for every 6 second interval 9 Temperature Measurement only for UT131C see Figure 5 1 Switch the dial to temperature test 2 Insert K thermocouple into the device and fix the temperature probe to the...

Page 23: ...UT131 Palm Size Multimeter 23...

Page 24: ...UT131 Palm Size Multimeter 24 10 NCV Measurement only for UT131D see Figure 6 Figure 6...

Page 25: ...ition 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 3 Intensity of e...

Page 26: ...g press HOLD key and turn on the device When pressing any key or switching the dial the buzzer will beep once Buzzer Notification 1 Input voltage 250V AC DC buzzer will continuously beep indicating me...

Page 27: ...curacy of reading numerical value in least significant digit slot 1 Year Warranty Ambient temperature 23 C 5 C 73 4 F 9 F Ambient humidity 75 RH Notes To ensure accuracy operating temperature should b...

Page 28: ...e value becomes stable once the load is connected Least significant digit 3 Max input voltage 250V when the voltage 610V OL symbol appears Overload protection 250Vrms AC DC 2 AC voltage Range Mode Res...

Page 29: ...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 Range Mode Resolution Accurac...

Page 30: ...0 01k 0 8 2 200 0k UT131A B C D 0 1k 0 8 2 20 00M UT131A B C D 0 01M 1 2 3 200 0M UT131A D 0 1M 5 0 10 Measurement result reading of resistor reading of shorted test leads Overload protection 250Vrms...

Page 31: ...eep Well connected circuit resistance 10 continuous beeps 0 001V Open circuit voltage 2 1V test current about 1mA Silicon PN junction voltage 0 5 0 8V Overload protection 250Vrms AC DC 5 Capacitance o...

Page 32: ...1nF 4 8 2 000 F 0 001uF 4 8 20 00 F 0 01uF 4 8 200 0 F 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 Resol...

Page 33: ...otection 250Vrms AC DC K thermocouple is only applicable for temperature less than 250 C 482 F 7 DC Current Range Mode Resolution Accuracy 200 0 A UT131A B 0 1 A 1 0 2 2000 A UT131A C D 1 A 1 0 2 20 0...

Page 34: ...oad protection 250Vrms A mA range F1 Fuse 0 2 A 250V 5 20 mm 10 A range F2 Fuse 10 A 250V 5 20 mm 8 AC Current only for UT131A Range Mode Resolution Accuracy 200 0 A UT131A 0 1 A 1 2 3 2000 A 1 A 1 2...

Page 35: ...Fuse 10A 250V 5 20mm Maintenance Warning Before opening the rear cover switch off the power supply remove test leads from the input terminal and the circuit 1 General maintenance 1 Clean the case with...

Page 36: ...nal 2 Take off the protective case Loosen the screw on battery cover remove the cover to replace the battery Please identify the positive and negative pole Fuse replacement 1 Switch the dial to OFF po...

Page 37: ...UT131 Palm Size Multimeter 37...

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