Model UT30B/C/D/F: OPERATING MANUAL CONTENTS A. Introduction B. Safety Information C. Rules for safe operation D. International Electrical Symbols E. General Specifications F. Specification G. Operation plate H. Make Measurements I. Fuse and battery replacement J. Accessories Remark: The model of UT30B,UT30C,UT30D will be marked as UT30BL,UT30CL UT30DL,if they have backlight function.
Model UT30B/C/D/F: OPERATING MANUAL A. Introduction UT30 series Multimeter is 3 1/2 digits with steady operations,fashionable structure and highly reliable hand-held measuring instrument. The meter can measure DC/AC voltage, DC/AC current, Resistance, Frequency, Temperature, Diode, Transistor hFE, and Continuity. It is an ideal tool for maintenance.
Model UT30B/C/D/F: OPERATING MANUAL B. Safety Information This Meter complies with the standards IEC61010-1: in pollution degree 2, overvoltage category (CAT I 600V, CAT II 300V) and double insulation. CAT. I: Signal level, special equipment or parts of equipment, telecommunication, electronic, etc., with smaller transient overvoltages than overvoltages CAT. II. CAT. II: Local level, appliance, PORTABLE EQUIPMENT etc., with smaller transient overvoltages than CAT.
Model UT30B/C/D/F: OPERATING MANUAL C.Rules for safe operation(1) l Use the meter only as the rules specified in this manual, otherwise, the protection provided by the meter may be impaired. l Do not operate the meter unless the bottom case has been closed as terminal can carry voltage. l Inspect the insulation of the test leads and make sure there is no damage to the test leads before using the meter. l As soon as the battery indicator’s“ ” appear, replace the battery to ensure accurate readings.
Model UT30B/C/D/F: OPERATING MANUAL C.Rules for safe operation(2) l l l l l l When measuring voltage higher than DC 60V or AC 30Vrms, pay extra attention to avoid electric shock. Make sure to replace right type and right rating fuse. Do not operate or store the Meter under high temperature or humid condition. Do not change internal circuit to avoid damages to the meter and danger to the user. Periodically wipe the case with damp cloth and mild detergent. Do not use abrasives and solvents.
Model UT30B/C/D/F: OPERATING MANUAL D.International Electrical Symbols Low Battery Earth Ground Warning Double Insulation AC current Diode Buzzer DC current AC or DC Fuse Conforms to Standards of European Union.
Model UT30B/C/D/F: OPERATING MANUAL E.General Specifications(1) 1. The maximum voltage, between any terminal and earth, is 600Vrms. A . The“COM”input terminal is always connected with the black test lead. B . The“VΩmA”input terminal is always connected with the red test lead and is used to measure voltage up to 500V,resistance and current up to 200mA. C . The“10A MAX”input terminal is always connected with the red test lead and is used to measure current greater than 200mA but no more than 10A. 2.
Model UT30B/C/D/F: OPERATING MANUAL E.General Specifications(2) 6. Temperature: Operating: 0 C-40 C (32 F-104 F) Storing:-10 C-50 C (14 F -122 F) 7. Altitude: Operating:2000m Storage:10000m 8 Relative humidity:Max.relative humidity 80% for temperature up to 31 C decreasing linearly to 50% relative humidity at 40 C. 9. Battery: 9V NEDA 1604 or 6F22 or 006P. 10. Low Battery Indication: Display “ ”.on LCD. 11. Dimension:75mmx130mmx36mm 12. Weight: approx.
Model UT30B/C/D/F: OPERATING MANUAL F.Specification(1) Accuracy: (a% reading + b digit), which guarantee one year. Environmental Temperature:23 C 5 C Relative Humidity: <75% 1. DC Voltage o Range 200mV 2000mV(2V) 20V 200V 500V Resolution o Accuracy UT30B UT30C 100µV 1mV 10mV 100mV 1V UT30D UT30F (0.5%+2) (0.8%+2) Input Impedance:10MΩ for all the ranges. Overload protection: At 200mV range, it’s protected at 230V(AC / DC Current), others are protected at 500V(AC or DC).
Model UT30B/C/D/F: OPERATING MANUAL F.Specification(2) 2. AC Voltage Range 200mV 2V 20V 200V 500V Resolution 100µV 1mV 10mV 100mV 1V Accuracy UT30B UT30C UT30D UT30F (1.2%+3) (1%+3) (1.2%+10) (1.2%+3) Input Impedance: (approx. 5MΩ ) of UT30B\C\D, but all ranges of UT30F are 10MΩ .
Model UT30B/C/D/F: OPERATING MANUAL F.Specification(3) 3. DC Current Range 200µA 2000µA(2mA) 20mA 200mA 10A Resolution UT30B 100nA 1µA 10µA 100µA 10mA Accuracy UT30C UT30D UT30F (1%+2) (1.2%+2) (2%+5) Overload Protection:315mA/250V fuse, No fuse at 10A,measuring time limit is equal to or less than 10 seconds, and time interval should be equal to or over 15 minutes. Measuring voltage drop: Full range is 200m V.
Model UT30B/C/D/F: OPERATING MANUAL F.Specification(4) 4. AC Current(Only UT30F) Range 200mA 10A Accuracy Resolution 100µA 10mA (1.8%+3) (3%+7) Overload Protection: 315mA/250V fuse, No fuse at 10A,measuring time limit is equal to or less than 10 seconds; time interval is equal to or over 15 minutes.
Model UT30B/C/D/F: OPERATING MANUAL F.Specification(5) 5. Resistance Range 200Ω 2000Ω(2kΩ) 20kΩ 200kΩ 2MΩ 20MΩ Resolution Accuracy UT30B UT30C 0.1Ω 1Ω 10Ω 100Ω 1kΩ 10kΩ UT30D (0.8%+5) (0.8%+2) (1%+5) Overload Protection: All ranges are 230V(DC/ AC current).
Model UT30B/C/D/F: OPERATING MANUAL 14
Model UT30B/C/D/F: OPERATING MANUAL F.Specification(7) 7. Frequency(Only UT30F Auto Range) Range 2kHz 10MHz Accuracy Resolution 1Hz 10kHz (0.1%+3) 8. Square Wave Output(Only UT30D) Range OUT Illustration Output approx. at 50Hz Square Wave .As a simple signal source , with 100kΩ resistance output.
Model UT30B/C/D/F: OPERATING MANUAL F.Specification(8) No overload protection for this range; make sure voltage output of calibrated equipment is less than 10V to avoid damages to the Meter. 9. Diode, Transistor, Continuity Beeper Test Function Range Resolution 30B 30C 30D 30F Diode Transistor hFE Continuity Beeper Test 1mV 1β 1Ω 16 Remark Display voltage drop approximation.
Model UT30B/C/D/F: OPERATING MANUAL G.Operation Plate Overload Protection: 230V(DC/ AC current),Only Operation Plate(see figure 1) 1. Liquid Crystal Display 2. Data hold or backlight selection button except UT30F(AC/ DC exchange)* 3. Rotary Switch 4. Transistor Test Jack 5. Common Input Jack ( figure 1) 6. 10A Input Jack 7.
Model UT30B/C/D/F: OPERATING MANUAL H.Make Measurements(1) First, set rotary switch to proper position. When the battery is low,“ ”will appear on LCD. Second, the “ ” symbol beside the input jack warns you when testing current and voltage. Input values must not exceed the limit. 1.
Model UT30B/C/D/F: OPERATING MANUAL H.Make Measurements(2) 1) Never measure voltage value exceeding 500V, although it is possible to get the reading. This may cause damages to the internal circuit and danger to users; 2) Set rotary switch to maximum range, if the voltage value to be tested is unknown. Then according to reading requirement adjust to a lower range until satisfactory reading is obtained. 3) If “1”or “OL” is shown on LCD, set to the higher range because the selected range is overloaded.
Model UT30B/C/D/F: OPERATING MANUAL H.Make Measurements(3) 2. AC Voltage Measurement (see figure 3) black red (figure 3) Same as DC voltage measurement.
Model UT30B/C/D/F: OPERATING MANUAL H.Make Measurements(4) 3. DC Current Measurement(see figure 4) black red (figure 4) 1) Do not measure when value between open voltage and earth is exceeding safety voltage 60V because it may cause damages to the measuring object or instrument and also hurt the user.
Model UT30B/C/D/F: OPERATING MANUAL H.Make Measurements(5) 2) Before measurement, cut off the power to the object to be measured and inspect if input terminal or rotary switch is set to the right range then you can measure the object with power on. 3) If the magnitude of current is unknown, set rotary switch to the highest range and then adjust to a lower range until a satisfactory reading is obtained. 4) If the meter is overloaded on mA input jack the fuse will melt up.
Model UT30B/C/D/F: OPERATING MANUAL H.Make Measurements(6) 4.
Model UT30B/C/D/F: OPERATING MANUAL H.Make Measurements(7) 5. Resistance Measurement (see figure 6) 1) To avoid damages to the Meter when measuring resistance, cut off the power of the object and make sure there is no charge in capacitor. 2) Test lead wires take 0.1Ω -0.3Ω tolerance when measuring resistance. To get an accurate reading, subtract the short circuit values of the 2 test leads. 3) It will take several seconds for the display to become stabilized when resistance value is over 1MΩ.
Model UT30B/C/D/F: OPERATING MANUAL H.Make Measurements(8) 6. Diode measurement (see figure 7) 1) Avoid damages to the meter. When measuring diode, cut off the power supply of the object and make sure there is no charge in capacitor. 2) When measuring voltage drop of diode, transistor, and other semiconductor component at diode function, its silicon semiconductor structure should be normal positive reading and stay between 0.5V and 0.8V.
Model UT30B/C/D/F: OPERATING MANUAL H.Make Measurements(9) 7. Transistor hFE Measurement (see figure 8) 1) Check that the transistor is PNP or NPN type. 2) Connect the transistor to be measured to the corresponding jacks. 3) LCD display hFE reference value.
Model UT30B/C/D/F: OPERATING MANUAL H.Make Measurements(10) 8. Temperature Measurement:(Only for UT30C)(see figure 9) 1) Insert the black K type thermocouple (P/N:41700103) into “COM” socket. Red lead of temp. probe into “ C” socket, LCD displays the measuring value with unit in C. 2) The temperature probe limits to below 250 C. For a higher degree of temperature measurement, use another hand-held thermocouple (P/N:41700107). The LCD display room temperature when unloading the probe.
Model UT30B/C/D/F: OPERATING MANUAL H.Make Measurements(11) 9. Square Wave Output:(Only UT30D) (see figure 10) 1) To avoid damages to the meter, do not let output terminal reach higher then 10V voltage. 2) The frequency is 50Hz. 3) The output voltage range will be over 3V when it is loaded 1MΩ. 4) Use square wave output to repair audio equipment.
Model UT30B/C/D/F: OPERATING MANUAL H.Make Measurements(12) 10. Frequency Measurement (Only for UT30F)(see figure 11) 1) Do not input voltage over 230V RMS to avoid damages to the meter. 2) The LCD will display reading when the measured frequency is more than 10V, but the read out may exceed specification. To obtain an accurate, stable reading, an external attenuator should be used. 3) To measure high frequency signal in high interferenced environment use shielded cable.
Model UT30B/C/D/F: OPERATING MANUAL I.Fuse and battery replacement H. Fuse and battery replacement(see figure 12) 1) Turn the rotary switch to OFF position,and remove the test leads from terminals. 2) Remove two rubber feet and two screws from the bottom case. 3) Separate the bottom case from the top case.
Model UT30B/C/D/F: OPERATING MANUAL J.Accessories 1) Operating manual 2) Test leads 3) Thermocouple(Only for UT30C) ** END ** This operating manual is subject to change without notice.
Model UT30B/C/D/F: OPERATING MANUAL Copyright 2001 Uni-Trend International Limited. All rights reserved. Manufacturer: UNI-TREND TECHNOLOGY(DONG GUAN)LIMITED Address: Dong Fang Da Dao, Bei Shan Dong Fang Industrial Development District, Hu Men Town, Dong Guan City, Guang Dong Province, China Headquarters: Uni-Trend International Limited Address: 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.
