Model UT205A/206A: OPERATING MANUAL Table of Contents Title Overview Unpacking Inspection Safety Information Rules For Safe Operation International Electrical Symbols The Meter Structure Functional Buttons Display Symbols Measurement Operation A. AC Current Measurement B. DC Voltage Measurement C. AC Voltage Measurement D. Measuring Resistance E. Testing for Diodes and Continuity F. Frequency and Duty Cycle (%) Measurement (Duty Cycle: UT205A only) G.
Model UT205A/206A: OPERATING MANUAL Title Operation of Hold Mode The Use of Relative Value Mode(Model UT206A only) The SELECT Button Turning on the Display Backlight Sleep Mode General Specifications Accuracy Specifications A. AC Current B. DC Voltage C. AC Voltage D. Resistance E. Diode and Continuity Test F. Frequency G. Duty Cycle (Model UT205A only) H. Temperature (Model UT206A only) Maintenance A. General Service B.
Model UT205A/206A: 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. Warning To avoid electric shock or personal injury, read the “Safety Information” and “Rules for Safety Operation” carefully before using the Meter.
Model UT205A/206A: 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 1 2 3 4 5 Description Operating Manual Test Lead Model UT206A: Point Contact Temperature Probe 9V Battery (NEDA 1604, 6F22 or 0006P) (installed inside the Meter) Vinyl Bag Qty 1 piece 1 pair 1 piece 1 piece 1 piece In the event you find any missing or damage, please contact your dealer immediately.
Model UT205A/206A: 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 voltage overvoltages than CAT. III CAT. III: Distribution level, fixed installation, with smaller transient overvoltages than CAT. IV.
Model UT205A/206A: OPERATING MANUAL Rules For Safe Operation 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: Check for the lever is in good condition when measuring AC current. Must center the wire (conductor) within the transformer jaw. 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.
Model UT205A/206A: OPERATING MANUAL Use the proper terminals, function, and range for your measurements. When using the test leads, keep your fingers behind the finger guards. Disconnect circuit power and discharge all high-voltage capacitors before testing To avoid harms to you or damages to the Meter from electric shock, please do not attempt to apply higher than 600V between the terminals and grounding. Replace the battery as soon as the battery indicator appears.
Model UT205A/206A: OPERATING MANUAL Do not use or store the Meter in an environment of high temperature, humidity, explosive, inflammable and strong magnetic field.
Model UT205A/206A: OPERATING MANUAL International Electrical Symbols AC (Alternating Current) DC (Direct Current) AC or DC Grounding Double Insulated Fuse Deficiency of Built-In Battery Continuity Test Diode Conforms to Standards of European Union Warning.
Model UT205A/206A: OPERATING MANUAL The Meter Structure (see figure 1) 1. Transformer Jaws designed to pick up the AC current flowing through the conductor. 2. Rotary Switch. 3. LCD Display. 4. Function Buttons 5. Input Terminals 6. Trigger. Press the lever to open the transformer jaws. When the pressure on the lever is released, the jaws will close.
Model UT205A/206A: OPERATING MANUAL Functional Buttons Below table indicated for information about the functional button operations. Button Operation Performed Turn the display backlight on and off. In order to avoid the hazard arising from mistaken readings in insufficient light or poor vision, please use Display Backlight function. Hz% (UT205A only) 1. At ACV or DCV range Press the button to step through ACV or DCV, frequency and duty cycle measurement.
Model UT205A/206A: OPERATING MANUAL Button Hz% (UT205A only) Operation Performed The Meter is at the DCV – 400mV range or ACV -4V range after returning from the Hz% cycle measurement mode. 2. At Hz range Press the button to step through frequency and duty cycle measurement mode. REL (UT206A only) SELECT Press REL to enter and exit the REL mode in any measuring mode except in frequency and duty cycle, the Meter beeps.
Model UT205A/206A: OPERATING MANUAL Button SELECT HOLD Operation Performed When it is under sleep mode, press to activate the Meter at the effective measurement range, e.g. continuity buzzer. Auto power off feature will be disabled until switch off and turn on the Meter again. Press HOLD to enter and exit the Hold mode in any mode, the Meter beeps.
Model UT205A/206A: OPERATING MANUAL Display Symbols (see figure 2) (figure 2) 14
Model UT205A/206A: OPERATING MANUAL Number 1 2 3 Symbol 4 5 % Percent: Used for duty cycle measurements. A Indicator for AC current 6 Hz, kHz, MHz Hertz. The unit of frequency. Kilohertz. 1x 103 or 1000 hertz. Megahertz. 1x106 or 1,000,000 hertz. 7 ,k ,M Ohm. The unit of resistance. kilohm. 1 x 103 or 1000 ohms. Megaohm. 1x106 or 1,000,000 ohms. AC Meaning Data hold is active. Indicator for AC Voltage. The battery is low.
Model UT205A/206A: OPERATING MANUAL Number 8 Symbol The continuity buzzer is on. Test of diode 9 10 o C Centigrade. The unit of temperature. The relative value mode is on to display the stored value minus the present 11 12 Meaning V, mV Volts. The unit of voltage. Millivolt. 1 x 10-3 or 0.001 volts.
Model UT205A/206A: OPERATING MANUAL Measurement Operation Make sure the Sleep Mode is not on if you found there is no display on the LCD after turning on the Meter. Make sure the Low Battery Display is not on; otherwise false readings may be provided. Pay extra attention to the symbol which is located besides the input terminals of the Meter before carrying out measeurement. Make sure you are in the proper measurement range before carrying out measurement. A.
Model UT205A/206A: OPERATING MANUAL To measure current, do the following: 1. Set the rotary switch to the current measurement mode. 2. Check the lever is in good condition. 3. Press the lever to open the transformer jaws. 4. Center the conductor within the transformer jaw. The measured value shows on the display, it is a effective value of sine wave (mean value response).
Model UT205A/206A: OPERATING MANUAL B. DC Voltage Measurement (See figure 4) Warning To avoid harms to you or damages to the Meter from electric shock, please do not attempt to measure voltages higher than 600V although readings may be obtained. To measure DC voltage, connect the Meter as follows: 1. Insert the red test lead into the V terminal and the black test lead into the COM terminal. 2. Set the rotary switch to DC voltage measurement mode. 3.
Model UT205A/206A: OPERATING MANUAL Note In each range, the Meter has an input impedance of 10M . This loading effect can cause measurement errors in high impedance circuits. If the circuit impedance is less than or equal to 10k , the error is negligible (0.1% or less). When DC voltage 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. C.
Model UT205A/206A: OPERATING MANUAL D. Measuring Resistance (see figure 5) 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 terminal and the black test lead into the COM terminal. 2. Set the rotary switch to . 3. Connect the test leads across with the object being measured.
Model UT205A/206A: OPERATING MANUAL To obtain precision readings in low-resistance measurement, that is the range of 400.0 , short-circuit the input terminals beforehand, using the relative measurement function button REL to automatically subtract the value measured when the testing leads are short-circuited from the reading. For high-resistance measurement (>1M ), it is normal to take several seconds to obtain a stable reading.
Model UT205A/206A: OPERATING MANUAL E. Testing for Diodes and Continuity (See figure 6) 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 for continuity. Red Black To test for diodes and continuity, connect the Meter as below: 1. Insert the red test lead into the terminal and the (figure 6) black test lead into the COM terminal. 2. For diode test a. Set the rotary switch to . b.
Model UT205A/206A: OPERATING MANUAL 3. For continuity test: a. Press SELECT to switch between Diode and Continuity test. b. Connect the test lead to the two end of the circuit under test. c. The buzzer sounds if the resistance of a circuit under test is less than 100 . Note In a circuit, a good diode should still produce a forward voltage drop reading of 0.5V to 0.8V; however, the reverse-voltage drop reading can vary depending on the resistance of other pathways between the probe tips.
Model UT205A/206A: OPERATING MANUAL F. Frequency and Duty Cycle (%) Measurement (See figure 7) UT205A has both frequency and duty cycle measurement feature UT206A has only frequency measurement feature To measure frequency and duty cycle, connect the Meter as follows: Hz% 1. UT205A a. Insert the red test lead into the Hz% terminal a the black test lead into the COM terminal. b. Set the rotary switch to Hz; press Hz% button to switch between Hz and Duty cycle (figure 7) measurement mode. c.
Model UT205A/206A: OPERATING MANUAL d. Connect the test leads across with the object being measured. The measured frequency value or duty cycle value shows on the display. 2. UT206A a. Insert the red test lead into the Hz terminal and the black test lead into the COM terminal. b. Set the rotary switch to Hz. c. Connect the test leads across with the object being measured. The measured frequency value shows on the display.
Model UT205A/206A: OPERATING MANUAL G. Model UT206A: Temperature Measurement (See figure 8) To measure temperature, connect the Meter as follows: o 1. Insert the red temperature probe into the C terminal and the black temperature probe into the COM terminal. o 2. Set the rotary switch to C. 3. Place the temperature probe to the object being measured. The measured value shows on the display. Red Black Note When there is no temperature probe inserted into the terminals, the LCD displays OL.
Model UT205A/206A: OPERATING MANUAL Operation of Hold Mode Warning To avoid possibility of electric shock, do not use Hold mode to determine if circuits are without power. The Hold mode will not capture unstable or noisy readings. The Hold mode is applicable to all measurement functions. Press HOLD to enter Hold mode; the Meter beeps. Press HOLD again or turn the rotary switch to exit Hold mode; the Meter beeps. In Hold mode, is displayed.
Model UT205A/206A: OPERATING MANUAL The Use of Relative Value Mode (UT206A only) The REL mode applies to all measurement functions except frequency and duty cycle. It subtracts a stored value from the present measurement value and displays the result. For instance, if the stored value is 20.0V and the present measurement value is 22.0V, the reading would be 2.0V. If a new measurement value is equal to the stored value then display 0.0V.
Model UT205A/206A: OPERATING MANUAL The SELECT Button It uses for selecting the required measurement function when there is more than one function at one position of the rotary switch. Turning on the Display Backlight Warning In order to avoid the hazard arising from mistaken readings in insufficient light or poor vision, please use Display Backlight function. Press and hold button for over 2 seconds to turn the Display Backlight on.
Model UT205A/206A: OPERATING MANUAL General Specifications Maximum Voltage between any Terminals and Grounding: Maximum Current Measurement: of Transformer Jaw: Maximum Jaw Size: Maximum Display: Overload Display: Range: Polarity Display: Measurement Speed: Temperature: Relative Humidity: Altitude: 600V rms or 600V DC. 1000A. 40mm. Digital: 3999, 3 3/4 digits OL Auto Negative display: “-“ Updates 3 times/second. o o o o Operating: 0 C to +40 C (32 F to+104 F).
Model UT205A/206A: OPERATING MANUAL Battery Type: Battery Deficiency: Dimensions (HxWxL): Weight: Safety/Compliances: One piece of 9V (NEDA1604 or 6F22 or 006P). Display 236mm x 97mm x 40mm Approximate 350g (battery included). IEC61010 CAT. II 600V / CAT III 300V overvoltage and double insulation standard. Certifications: Auto power off Accuracy Specifications Accuracy: (a% reading + b digits), guarantee for 1 year. o o Operating temperature: 23 C 5 C. Relative humidity: 75%.
Model UT205A/206A: OPERATING MANUAL A. AC Current Range Resolution 400A 0.1A 1000A 1A Accuracy Remarks (1.5%+5) 800A >800A Frequency response 50Hz~60Hz. Display effective value of sine wave (2%+5) (mean value response). (3%+5) B. DC Voltage Range Resolution 400mV 100 V 4V 1mV 40V 10mV 400V 100mV 600V 1V Accuracy Overload Protection Remarks (0.8%+3) (0.8%+1) 600V DC 600V AC (1%+3) 33 Input impedance: around 10M .
Model UT205A/206A: OPERATING MANUAL C. AC Voltage Range Resolution Accuracy 40V 1mV 40V 10mV 400V 100mV 600V 1V (1.2%+5) Overload Protection 600V DC 600V AC (1.5%+5) Remarks Input impedance around 10M . Displays effective value of sine wave (mean value response). Frequency response: 40Hz ~ 400Hz. D. Resistance Range Resolution Accuracy 400 0.1 (1.
Model UT205A/206A: OPERATING MANUAL Range Resolution Accuracy 40k 10 400k 100 4M 1k (1.2%+2) 40M 10k (1.5%+2) Overload Protection (1%+2) 500V DC or AC E. Diode and Continuity Test Function Diode Range Resolution Overload 1mV 500V DC or AC Continuity Remarks Displays the nearest value of forward voltage drop Buzzer beeps when 100 0.
Model UT205A/206A: OPERATING MANUAL F. Frequency (auto-ranging) Range Resolution Accuracy Overload Protection 10Hz10MHz Min 0.001Hz (0.1%+3) 500V DC or VAC Remarks Input Voltage: 1MHz: 300mV rms a 30V rms; 1MHz: 600mV rms a 5V rms G. Duty Cycle (Model UT205A only) Range Resolution 0.1%-99.9% 0.1% Accuracy For reference only Overload Protection 500V DC or AC H.
Model UT205A/206A: OPERATING MANUAL Maintenance This section provides basic maintenance information including battery replacement instruction. 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 you 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.
Model UT205A/206A: OPERATING MANUAL B. Replacing the Battery (See figure 9) 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. Make sure the transformer jaw and the test leads are disconnected from the circuit being tested before opening the case bottom. Screw (figure 9) Make sure the test leads are removed from the input terminals.
Model UT205A/206A: OPERATING MANUAL To replace the battery: 1. Turn the rotary switch of the Meter to OFF position and remove all the connections from the terminals. 2. Remove the screw from the battery compartment, and separate the battery compartment from the case bottom. 3. Remove the battery from the battery compartment. 4. Replace the battery with a new 9V battery (NEDA1604, 6F22 or 006P) and or a 1.5V battery (AAA). 5. Rejoin the case bottom and battery compartment, and reinstall the screw.
Model UT205A/206A: OPERATING MANUAL Copyright 2006 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.
