Uni-Trend UT208A multimeter
Contents
1. 0 C 400 C 2 5 3 1K Q 400 C 1000 C 3 3 K Capacitance UT208A only Range Resolution Accuracy Overload Protection 4nF 0 001nF For reference only 40nF 0 01nF 400nF 0 1nF 4 0 3 DC1000V AC750V AuF 0 001uF 40uF 0 01uF 100mF 0 1uF 5 0 10 42 UT207A 208A 209A Operating Manual Maintenance This section provides basic maintenance information including battery replacement instruction A Warning Do not attempt to repair or service your Meter unless you are qualified to do so and have the relevant calibration performance test and service information To avoid electrical shock or damage to the Meter do not get water inside the case A General Service Periodically wipe the case with a damp cloth and mild detergent Do not use abrasives or solvents To clean the terminals with cotton bar with detergent as dirt or moisture in the terminals can affect readings Turn the Meter power off when it is not in use Take out the battery when it is not using for a long time Do not use or store the Meter in a place of humidity high temperature explosive inflammable and strong magnetic field 43 UT207A 208A 209A Operating Manual B Replacing the Battery see figure 11 A Warning To avoid false readings which could lead to possible electric shock or personal injury replace the battery as soon as the battery indicator ga appears2. If the 17 UT207A 208A 209A Operating Manual circuit impedance is less than or equal to 10kQ the error is negligible 0 1 or less e When DC AC voltage measurement has been completed disconnect the connection between the testing leads and the circuit under test and remove testing leads from the input terminals B Measuring Resistance see figure 4 A Warning To avoid damages to the Meter or to the devices under test disconnect circuit power and discharge all the high voltage capacitors before measuring resistance To measure resistance connect the Meter as follows 1 Insert the red test lead into the VQHz terminal and black test lead into the COM terminal 2 Set the rotary switch to Q 3 Connect the test leads across with the object being measured The measured value shows on the display 18 UT207A 208A 209A Operating Manual Figure 4 Note e To obtain a more precise reading you could remove the objects being tested from the circuit when measuring e The test leads can add 0 10 to 0 30 of error to resistance measurement To obtain precision readings in low resistance measurement short circuit the 19 UT207A 208A 209A Operating Manual input terminals beforehand press ZERO to automatically subtract the value measured when the testing leads are short circuited from the reading e For high resistance measurement gt 1MQ it is normal to take several seconds to obtain a stable reading e To avoid
3. 10 E Figure 1 UT207A 208A 209A Operating Manual Display Symbols see figure 2 OR N AUTO HOLD ZERO gt SCTE COON D 11 12 13 14 1516 17 18 19 Figure 2 Test of diode The continuity buzzer is on Indicator for zeroing Data hold is active The Meter is in the auto range mode in which the Meter automatically selects the range with the best resolution 11 00 Y O 11 12 13 14 15 16 17 18 19 UT207A 208A 209A Operating Manual True RMS indicator Indicator for AC voltage or current Indicates negative reading Indicator for DC voltage The battery is low Warning To avoid false readings which could lead to possible electric shock or personal injury replace the battery as soon as the battery indicator appears The unit of transistor hEF The unit of temperature C Centigrade temperature The unit of temperature F Fahrenheit temperature The unit of capacitance UT208A only Volts The unit of voltage mV Millivolt Amperes amps The unit of current The unit of resistance Q Ohm k 2 Kilohm M2 Megohm The unit of frequency Hz Hertz KHz Kilohertz MHz Meghertz Duty cycle measurement 12 UT207A 208A 209A Operating Manual Functional Buttons Below table indicated for information about the functional button operations Button Operation Performed SELECT Press SELECT button to select the alternate functio
4. UT207A 208A 209A Operating Manual E Frequency and Duty Cycle Measurement see figure 7 A Warning To avoid harms to you or damages to the Meter from eletric shock do not attempt to measure voltages higher than 750V AC or 1000V DC although readings may be obtained To measure frequency connect the Meter as follows 1 Insert the red test lead into the VOHz terminal and the black test lead into the COM terminal 2 Set the rotary switch to Hz Frequency measurement mode is a default or press t Hz button to switch to duty cyclemeasurement mode 3 Connect the test leads across with the object being measured The measured value shows on the display Note When frequency measurement has been completed disconnect the connection between the testing leads and the circuit under test and remove the testing leads away from the input terminals of the Meter 25 Figure 7 UT207A 208A 209A Operating Manual F DC AC Current Measurement see figure 8 A Warning The operating temperature must be 0 C 40 C when measuring current To measure current do the following 1 Set the rotary switch to 40A 400AS or 1000A DC mesaurement mode is a default Press SELECT to switch to AC measurement mode Hold the Meter tight don t release Press the lever to open the transformer jaw Center the conductor within the transformer jaw then release the Meter slowly until the trasnformer jaw is completely closed Make sure the co
5. UT207A 208A 209A Operating Manual Table of Contents Title Page Overview 22 22 22 eee ana nennen 3 Unpacking Inspection 4 Safety Information 5 Rules for Safe Operation 6 International Electrical Symbols 9 The Meter Structure 2 2 10 Display Symbols 11 Functional Buttons oo co coc ten nie aan nanah 13 The Effectiveness of Functional Buttons 15 Measurement Operation 16 A DC AC Voltage Measurement 22 22 16 B Measuring Resistance 18 C Testing for Continuity 20 D Testing Diodes 2222 0 2 settee do 22002220 esas a ans Laer teen 29 E Frequency and Duty Cycle Measurement 25 F DC AC Current Measurement 27 G Temperature Measurement UT208A only 31 H Capacitance measu
6. away from the input terminals of the Meter 33 UT207A 208A 209A Operating Manual Figure 10 34 UT207A 208A 209A Operating Manual Specifications A General Specifications Display 3 3 4 digits LCD display Maximum display 3999 Polarity Auto Overloading Display OL or OL Battery Deficiency Display Sampling 3 times per second Measurement Deviation The conductor being meaured is not placed in the center of the jaw during AC DC current measurement it will cause extra 1 deviation based on the stated accuracy Drop Test 1 meter drop test passed Max Jaw Size 55mm diameter Projected Max Current conductor size 45mm diameter Electro Magnetic When carrying out measurement near the electro magnetic it may cause unstable or wrong reading Power 1 x 9V battery 6LF22 1604A Dimensions 285 3mm x 105mm x 44 5mm Weight Approximate 533g battery included 35 UT207A 208A 209A Operating Manual B Environmental Requirements The Meter is suitable for indoor use Altitude Operating 2000m Storage 10000m Safety Compliances IEC 61010 CATII 600V CATIII 300V over voltage and double insulation standard pollution degree 2 Temperature and humidity Operating 0 C 30 C lt s85 R H 30 40 lt 75 R H 40 50 lt 45 kR H Storage 20 C 60 C s85 R H 36 UT207A 208A 209A Operating Manual Accurate Specifications Accuracy a reading b digits guarantee for 1 year Op
7. d point contact temperature probe can only be used up to 230 C For any measurement is higher than that the rod type temperature probe must be used e When the temperature measurement has been completed disconnect the connection between the temperature probe and the object under test and remove the temperature probe away from the input terminals of the Meter 31 UT207A 208A 209A Operating Manual Figure 9 32 UT207A 208A 209A Operating Manual H Capacitance measurement UT208A only see figure 10 A To avoid harms to you or damages to the Meter from eletric shock do not attempt to input voltages higher than 33V AC or 70V DC To measure capacitance do the following 1 Insert the red test lead into the VOHz input terminal and black test lead to the COM input terminal 2 Set the rotary switch to 4 measurement mode Press the select button switch to 4 measurement mode To improve the measurement accuracy of small value capacitors less than 10nF press zero with the test leads open to subtract the residual capacitance of the Meter and leads 3 It is recommended to use test clip to carry out measurement to reduce the effect of internal distributed capacitor Note e Disconnect circuit power and discharge all high voltage capacitors before testing Capacitors e When capacitance measurement has been completed disconnect the connection between the testing leads and the circuit under test and remove the test leads
8. erating temperature 23 C 5 C Relative humidity s80 R H Temperature coefficient 0 1x specified accuracy 1 C A DC Voltage Range Resolution Accuracy Overload protection 400mV 0 1mV 0 8 3 4V 0 001mV 40V 0 01V 0 8 1 DC1000V AC750V 400V 0 1V 1000V 1V 1 0 3 Remark Input Impedance 10M 2 37 UT207A 208A 209A Operating Manual B AC Voltage Range Resolution Accuracy Overload protection 400mV 0 1mV 1 2 20 4V 0 001mV 40V 0 01V 1 2 3 DC1000V AC750V 400V 0 1V 750V 1V 1 2 5 Remarks e Input Impedance 10M 2 e Frequency Response 40Hz 400Hz e Change to AC UT207A 208A Couple AC and average value response method UT209A Couple AC and True RMS response method Input sine wave to adjust Non sine wave must follow the below data to adjust Peak factor 1 4 2 0 add 1 0 on the stated accuracy Peak factor 2 0 2 5 add 2 5 on the stated accuracy Peak factor 2 5 3 0 add 4 0 on the stated accuracy 38 UT207A 208A 209A Operating Manual C Resistance Range Resolution Accuracy Overload protection 400 2 0 12 1 2 2 4k Q 0 001K 2 40k Q 0 01K 2 1 0 2 DC1000V AC750V 400k Q 0 1K Q 4M Q 0 001M 2 1 2 2 40M 2 0 01M 2 1 5 2 D Continuity Test Range Resolution Accuracy Overload Protection 2 0 12 Around 10 2 the buzzer beeps DC1000V Open circuit volta
9. figure 11 44 UT207A 208A 209A Operating Manual Make sure the transformer jaw and the tets leads are disconected from the circuit being tested before opening the case bottom To replace the battery Turn the Meter off and remove all the connections from the input terminals Turn the Meter s front case down Remove the screw from the battery compartment and separate the battery compartment from the case bottom Take out the old battery and replace with a new 9V battery 6LF22 1604A Rejoin the case bottom and the battery compartment and reinstall the screw uR WNA This operating manual is subject to change without notice 45 Copyright 2010 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 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 com UT207A 208A 209A Operating Manual
10. ge approx 0 4V AC750V Remarks e The buzzer beep when the resistance of a circuit under test is lt 10 2 e The buzzer may or may not beeps when the resistance of a circuit gt 10 2 39 UT207A 208A 209A Operating Manual E Diode Test Range Resolution Accuracy Overload Protection gt 0 5V 0 8V DC1000V ti Open circuit voltage approx 1 5V AC750V F Frequency Range Resolution Accuracy Overload Protection 400Hz 0 1Hz 4kHz 0 001kHz 40kHz 0 01kHz 400kHz 0 1kHz 0 1 3 DC1000V AC750V 4MHz 0 001MHz 40MHz 0 01MHz Remarks Input Sensitivity as follows When lt 100kHz gt 300mV rms When gt 100kHz gt 600mV rms Input amplitude a 300mV lt a lt 10V rms 40 UT207A 208A 209A Operating Manual G Duty Cycle Range Resolution Accuracy Overload Protection 0 1 99 9 0 1 For reference only DC1000V AC750V H DC Current Range Resolution Accuracy Overload protection 40A 0 01A 2 0 5 400A 0 1A 2 0 3 1000A DC AC 1000A 1A 1 5 5 AC Current Range Resolution Accuracy Frequency Response Overload protection 40A 0 01A 2 5 8 400A 0 1A 2 5 5 50Hz 60Hz 1000A DC AC 1000A 0 1A 2 0 2 41 J Temperature UT208A only UT207A 208A 209A Operating Manual Range Resolution Accuracy Overload Protection 40 C 0 C 8 5 40 C 1000 C 1 C
11. harms to you or damages to the Meter from eletric shock do not attempt to input voltages higher than 33V AC or 70V DC e When resistance measurement has been completed disconnect the connection between the testing leads and the circuit under test and remove testing leads from the input terminals Testing for Continuity see figure 5 Z Warning To avoid damages to the Meter or to the devices under test disconnect circuit power and discharge all the high voltage capacitors before measuring continuity To test for continuity connect the Meter as follows 1 Insert the red test lead into the VOHz terminal and the black test lead into the COM terminal 2 Set the rotary switch to gt and press SELECT button to select 20 UT207A 208A 209A Operating Manual measurement mode 3 The buzzer sounds if the resistance of a circuit under test is less than 100 4 The buzzer may or may not sound if the resistance of a circuit under test is between 100 to 1000 5 The buzzer does not sound if the resistance of a circuit under test is higher than 1000 Figure 5 21 UT207A 208A 209A Operating Manual Note e To avoid harms to you or damages to the Meter from eletric shock do not attempt to input voltages higher than 33V AC or 70V DC e When continuity testing has been completed disconnect the connection between the testing leads and the circuit under test and remove testing leads from the input terminals D Testing Diode
12. he Meter e Do not carry out the measurement when the Meter s back case and battery compartment are not closed to avoid electric shock e Do not input higher than 1000V in DC or 750 V in AC between the two Meter s input terminal to avoid electric shock and damages to the Meter e When the Meter working at an effective voltage over 70V in DC or 33V rms in AC special care should be taken for there is danger of electric shock e Use the proper terminals function and range for your measurements e Do not use or store the Meter in an environment of high temperature humidity explosive inflammable and strong magnetic field The performance of the Meter may deteriorate after dampened e When using the test leads keep your fingers behind the finger guards e To avoid electric shock do not touch the bare wires connectors unused input terminals or the circuit under testing during measurement e Disconnect circuit power and discharge all high voltage capacitors before testing resistance continuity and diode e Replace the battery as soon as the battery indicator appears With a low battery the Meter might produce false readings that can lead to electric shock and personal injury e When servicing the Meter use only the same model number or identical 7 UT207A 208A 209A Operating Manual electrical specifications replacement parts The internal circuit of the Meter shall not be altered at will to avoid damage of the Meter and any acc
13. ident Soft cloth and mild detergent should be used to clean the surface of the Meter when servicing No abrasive and solvent should be used to prevent the surface of the Meter from corrosion damage and accident The Meter is suitable for indoor use Turn the Meter off when it is not in use and take out the battery when not using for a long time Constantly check the battery as it may leak when it has been using for some time replace the battery as soon as leaking appears A leaking battery will damage the Meter UT207A 208A 209A Operating Manual International Electrical Symbols Double Insulated Grounding Warning Refer to the Operating Manual AC Alternating Current DC Direct Current Continuity Test Diode Deficiency of Built In Battery AC or DC Danger of High Voltage Conforms to Standards of European Union UT207A 208A 209A Operating Manual The Meter Structure see figure 1 Hand Guards to protect user s hand from touching the dangerous area Trigger press the lever to open the transformer jaws When the pressure on the lever is released the jaws will close Functional Buttons Input Terminals LCD Display Rotary Switch Transformer Jaw designed to pick up the AC and DC current flowing through the conductor It could transfer current to voltage The tested conductor must vertically go through the Jaw center QOECHO
14. ity and etc UT208A has an extra temperature and Capacitance feature UT207A 208A 209A Operating Manual Unpacking Inspection Open the package case and take out the Meter Check the following items carefully to see any missing or damaged part Item Description Qty 1 English Operating Manual 1 piece 2 Test Lead 1 pair 3 Point Contact Temperature Probe Only UT208A This included point contact temperature probe can only be used up to 230 C For any measurement is higher than that the 1 pale rod type temperature probe must be used 4 Tool box 1 piece 5 9V Battery NEDA1604A or 6LF22 1 piece In the event you find any missing or damage please contact your dealer immediately UT207A 208A 209A Operating Manual Safety Information This Meter complies with the standards IEC61010 in pollution degree 2 overvoltage category CAT II 600V CAT III 300V and double insulation CAT II Local level appliance PORTABLE EQUIPMENT etc with smaller transient overvoltages than CAT III CAT Ill Distribution level fixed installation with smaller transient overvoltages than CAT IV Use the Meter only as specified in this operating manual otherwise the protection provided by the Meter may be impaired In this manual a Warning identifies conditions and actions that pose hazards to the user or may damage the Meter or the equipment under test A Note identifies the information that user should pay a
15. n be used on which rotary switch positions Rotary Switch Functional Buttons Positions SELECT RANGE o HOLD Y Hz ZERO VS e e o BH N A e N A e Q N A e e N A Hz N A N A e N A e N A 40A 5 N A e e e 400A S N A e 5 o 10004 amp e N A e C N A N A e e N A N A 15 UT207A 208A 209A Operating Manual Measurement Operation A DC AC Voltage Measurement see figure 3 Figure 3 16 UT207A 208A 209A Operating Manual A Warning To avoid harms to you or damages to the Meter from eletric shock do not attempt to measure voltages higher than 750V AC or 1000V DC although readings may be obtained To measure DC AC voltages connect the Meter as follows 1 Insert the red test lead into the VQ Hz terminal and black test lead into the COM terminal 2 Set the rotary switch to V DC mesaurement mode is a default Press SELECT to switch to AC measurement mode Press RANGE to enter manual ranging 3 Press Hz button to measure frequency or duty cycle but the frequency or duty cycle readings obtained from this range is only for reference 4 Connect the test leads across with the object being measured The measured value shows on the display Note e AC Millivolt is a manual ranging measurement mode e In each range the Meter has an input impedance of 10MQ This loading effect can cause measurement errors in high impedance circuits
16. nductor to be tested is placed at the center of the transformer jaw otherwise it will casue deviation The Meter can only measure one conductor at a time to meausre more than one condutor at a time will cause deviation RON Note for DC measure e The Hall components are very senstive not only to the magnet but also to heat and machines reaction force Any shock will cause the changing in reading in the short time e When the Meter does not display 0 before measurement press ZERO to 27 LINI T UT207A 208A 209A Operating Manual Figure 8 28 UT207A 208A 209A Operating Manual zeroing e Center the conductor within the transformer jaw then release the Meter slowly until the transformer jaw is completely closed Make sure the conductor to be tested is placed at the center of the transformer jaw otherwise it will cuase 1 0 deviation e When measuring DC current if the reading is positive then the current direction is from up to down see figure 8 the front case face up while the bottom case face down Below testnig method can obtain more accurate DC current e Power off the tested conductor current e Press the lever to open the transformer jaw e When the reading is stabled at the minimal press ZERO to display zero e Power on the tested conductor current read out the reading after the Meter is stable Note for AC measure e Center the conductor within the transformer jaw then release the Meter slowly until the
17. ns including V A and 4F Q UT208A only Range feature RANGE Exit AUTO and enter MANUAL ranging In MANUAL select next input range EXIT to return to AUTO AUTO is default Kr Press once to turn the display backlight on Press again to turn RK the display backlight off otherwise it will automatically off after 15 seconds e Press HOLD to enter the Hold mode in any mode except Hz the Meter beeps HOLD e Press HOLD again to exit the Hold mode to return to measurement mode the Meter beeps e Turn the rotary switch or press any button can also exit hold mode 13 UT207A 208A 209A Operating Manual Hz When the Meter is at amp Hz V and AS press Hz to measure frequency and duty cycle ZERO Press ZERO to zeroing the display before measuring AC DC voltage AC DC current resistance and capacitance Automatic Power Off The display blanks and the Meter goes into a sleep mode if you have not changed the rotary switch position or pressed a button for 15 minutes While in Sleep mode pressing the any effective Functional button or turning the rotary switch could turn the Meter on To disable the sleep mode function press SELECT button while turning on the meter 14 UT207A 208A 209A Operating Manual The Effectiveness of Functional Buttons Not every functional buttons can be used on every rotary switch positions Below table describe which functional buttons ca
18. rement UT208A only 33 1 UT207A 208A 209A Operating Manual Specifications 35 A General Specifications 35 B Environmental Requirements 36 Accuracy Specifications 37 Maintenance TTS 43 A General Service 43 B Replacing the Battery Sora SS renner RS 44 2 UT207A 208A 209A Operating Manual Overview This Operating Manual covers information on safety and cautions Please read the relevant information carefully and observe all the Warnings and Notes strictly A Warning To avoid electric shock or personal injury read the Safety Information and Rules for Safe Operation carefully before using the Meter Digital Clamp Multimeter Model UT207A UT208A UT209A hereafter referred to as the Meter are 3 3 4 digits with steady operations fashionable structure and highly reliable measuring instrument The Meter uses large scale of integrated circuit with double integrated A D converter as its core and has full range overload protection The Meter can measure AC DC Voltage AC DC Current Frequency Duty Cycle Resistance Diodes Continu
19. s see figure 6 A Warning To avoid damages to the Meter or to the devices under test disconnect circuit power and discharge all the high voltage capacitors before testing diodes Use the diode test to check diodes transistors and other semiconductor devices The diode test sends a current through the semicondutor junction then measure the voltage drop across the junction A good silicon junction drops between 0 5V and 0 8V To test the diode out of a circuit connect the Meter as follows 22 UT207A 208A 209A Operating Manual Insert the red test lead into the VOHz terminal and black test lead into the COM terminal Set the rotary switch to Press SELECT to switch to measurement mode For forward voltage drop readings on any semiconductor component place the red test lead on the component s anode and place the black test lead on the component s cathode The LCD will display OL indicating diode being tested is open or polarity error display Note To obtain a more precise reading you could remove the objects being tested from the circuit when measuring To avoid harms to you or damages to the Meter from eletric shock do not attempt to input voltages higher than 33V AC or 70V DC When diode testing has been completed disconnect the connection between the testing leads and the circuit under test and remove testing leads from the input terminals 23 UT207A 208A 209A Operating Manual Figure 6
20. transformer jaw is completely closed Make sure the conductor to be tested is placed at the center of the transformer jaw otherwise it will cuase 1 0 deviation 29 UT207A 208A 209A Operating Manual The meter will zero automatically When the measuring current gt 1A press Hz button to toggle between AC current and frequency measurement mode But the frequency readings obtained from this range is only for reference Change to AC UT207A 208A Couple AC and average value response method UT209A Couple AC and True RMS response method Input sine wave to adjust Non sine wave must follow the below data to adjust Peak factor 1 4 2 0 add 1 0 on the stated accuracy Peak factor 2 0 2 5 add 2 5 on the stated accuracy Peak factor 2 5 3 0 add 4 0 on the stated accuracy 30 UT207A 208A 209A Operating Manual G Temperature Measurement UT208A only see figure 9 To measure temperature measurement connect the Meter as follows 1 Insert the red temperature probe into the VOHz terminal and the black temperature probe into the COM terminal 2 Set the rotary switch to C measurement mode 3 Place the temperature probe to the object being measured The measured value shows on the display Note e When the Meter is at C range display OL to remind user to insert temperature probe e The Meter automatically displays the room temperature when the temperature probe is inserted but without any input e The include
21. ttention to International electrical symbols used on the Meter and in this Operating Manual are explained on page 9 UT207A 208A 209A Operating Manual Rules for Safe Operation A Warning To avoid possible electric shock or personal injury and to avoid possible damage to the Meter or to the equipment under test adhere to the following rules Before using the Meter inspect the case Do not use the Meter if it is damaged or the case or part of the case is removed Look for cracks or missing plastic Pay attention to the insulation around the connectors Inspect the test leads for damaged insulation or exposed metal Check the test leads for continuity Replace damaged test leads with identical model number or electrical specifications before using the Meter Do not apply more that the rated voltage as marked on the Meter between the terminals or between any terminal and grounding lf the value to be measured is unknown use the maximum measurement position and reduce the range step by step until a satisfactory reading is obtained When measurement has been completed disconnect the connection between the test leads and the circuit under test remove the testing leads away from the input terminals of the Meter and turn the Meter power off The rotary switch should be placed in the right position and no any 6 UT207A 208A 209A Operating Manual changeover of range shall be made during measurement is conducted to prevent damage of t
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