Model UT207/208 OPERATING MANUAL
Model UT207/208: OPERATING MANUAL Table of Contents Title Page Overview Unpacking Inspection Safety Information Rules For Safe Operation International Electrical Symbols The Meter Structure Functional Buttons The Effectiveness of Functional Buttons Display Symbols Measurement Operation A. DC/AC Voltage Measurement B. Measuring Resistance C. Testing Diodes D. Testing for Continuity E. Frequency Measurement F.
Model UT207/208: OPERATING MANUAL Title G. DC Current Measurement H. AC Current Measurement I. UT208 only: Temperature Measurement Sleep Mode Specifications A. General Specifications B. Environmental Requirements Accuracy Specifications A. DC Voltage B. AC Voltage C. Resistance D. Diode Test E. Continuity Test F. Frequency G. Duty Cycle H.
Model UT207/208: OPERATING MANUAL Title Page 47 48 49 49 50 I. AC Current J. Temperature (UT208 only) Maintenance A. General Service B.
Model UT207/208: 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 Safe Operation” carefully before using the Meter.
Model UT207/208: 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 2 3 English Operating Manual Test Lead Point Contact Temperature Probe (Only UT208) (This included point contact temperature probe can only be used 1 piece 1 pair 1 pair 4 5 up to 230 .
Model UT207/208: OPERATING MANUAL Safety Information This Meter complies with the standards IEC61010-1; IEC61010-2-032: 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. III: Distribution level, fixed installation, with smaller transient overvoltages than CAT.
Model UT207/208: 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: 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.
Model UT207/208: OPERATING MANUAL 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 changeover of range shall be made during measurement is conducted to prevent damage of the Meter. Do not carry out the measurement when the Meter’s back case and battery compartment are not closed to avoid electric shock. Do not input higher than 600V between the two Meter’s input terminal to avoid electric shock and damages to the Meter.
Model UT207/208: OPERATING MANUAL 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. When servicing the Meter, use only the same model number or identical electrical specifications replacement parts. The internal circuit of the Meter shall not be altered at will to avoid damage of the Meter and any accident.
Model UT207/208: OPERATING MANUAL International Electrical Symbols AC (Alternating Current) DC (Direct Current) AC or DC Grounding Double Insulated Warning.
Model UT207/208: OPERATING MANUAL The Meter Structure (see figure 1) 1. Hand Guards: to protect user’s hand from touching the dangerous area. 2. Trigger: press the lever to open the transformer jaws. When the pressure on the lever is released, the jaws will close. 3. Functional Buttons 4. Input Terminals 5. LCD Display 6. Rotary Switch 7. Transformer Jaw: designed to pick up the AC and DC current flowing through the conductor. It could transfer current to voltage.
Model UT207/208: 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 functions including (UT208 only). V , , %Hz, A and Starts recording of maximum and minimum values. Press to step the display through high (MAX) and low (MIN) readings at any mode. Press and hold for one second to exit MAX/MIN mode.
Model UT207/208: OPERATING MANUAL Button Operation Performed HOLD Press HOLD button for 2 seconds when turning on the Meter to display full icon. When the Meter is at %Hz, V and A , press Hz to measure frequency and duty cycle. Hz ZERO Press ZERO to zeroing the display before measuring DC current.
Model UT207/208: OPERATING MANUAL The Effectiveness of Functional Buttons Not every functional buttons can be used on every rotary switch positions.
Model UT207/208: OPERATING MANUAL Display Symbols (see figure 2) Figure 2 15
Model UT207/208: OPERATING MANUAL Number Symbol Meaning 1 2 3 4 5 6 INRUSH MIN MAX ZERO H AUTO 7 8 9 10 11 RMS AC Indicator for Surge current Minimum reading displayed Maximum reading displayed 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. True RMS indicator Indicator for AC voltage or current Indicates negative reading Indicator for DC voltage The battery is low.
Model UT207/208: OPERATING MANUAL Number Symbol 12 13 14 15 ,K ,M 16 Hz, kHz, MHz 17 mV, V 18 19 A 20 21 % Meaning Sleep mode is on Test of diode The continuity buzzer is on : Ohm. The unit of resistance. k :Kilohm. 1x103 or 1000 ohms M :Megohm. 1x106 or 1,000,000 ohms Hz: Hertz. The unit of frequency. KHz: Kilohertz. 1x103 or 1000 hertz. MHz: Meghertz. 1x106 or1,000,000 hertz. Volts. The unit of voltage. mV: Millivolt. 1x10-3 or 0.001 volts Amperes (amps). The unit of current.
Model UT207/208: OPERATING MANUAL Measurement Operation A. DC/AC Voltage Measurement (see figure 3) Warning To avoid harms to you or damages to the Meter from eletric shock, do not attempt to measure voltages higher than 600V AC/DC, although readings may be obtained.
Model UT207/208: OPERATING MANUAL The DC Voltage ranges are: 6.6V, 66V and 600V The AC Voltage ranges are: 6.6V, 66V and 600V To measure DC/AC voltages, connect the Meter as follows: 1. Insert the red test lead into the V Hz terminal and black test lead into the COM terminal. 2. Set the rotary switch to V . DC mesaurement mode and auto ranging is a default. Press SELECT to switch to AC measurement mode. 3.
Model UT207/208: OPERATING MANUAL B. Measuring Resistance (see figure 4) 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. The resistance ranges are: 660 , 6.6k , 66k , 660k , 6.6M and 66M To measure resistance, connect the Meter as follows: Insert the red test lead into the V Hz terminal 1. and black test lead into the COM terminal. Set the rotary switch to . Resistance 2.
Model UT207/208: OPERATING MANUAL 3. Connect the test leads across with the object being measured. The measured value shows on the display. Note To obtain a more precise reading, you could remove the objects being tested from the circuit when measuring. 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.
Model UT207/208: OPERATING MANUAL C. Testing Diodes (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 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.
Model UT207/208: OPERATING MANUAL 1. Insert the red test lead into the V Hz terminal and black test lead into the COM terminal. 2. Set the rotary switch to . Press SELECT to switch to measurement mode. 3. 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. Note To obtain a more precise reading, you could remove the objects being tested from the circuit when measuring.
Model UT207/208: OPERATING MANUAL D. Testing for 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 measuring continuity. To test for continuity, connect the Meter as follows: 1. Insert the red test lead into the V Hz terminal and the black test lead into the COM terminal. 2. Set the rotary switch to and press SELECT button to select measurement mode. 3.
Model UT207/208: OPERATING MANUAL a circuit under test is higher than 100 . Note 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.
Model UT207/208: OPERATING MANUAL E. Frequency Measurement (see figure 7) Warning To avoid harms to you or damages to the Meter from eletric shock, do not attempt to measure voltages higher than 600V AC/DC, although readings may be obtained. The frequency ranges are: 660Hz, 6.6kHz, 66kHz, 660kHz, 6.6MHz and 66MHz. To measure frequency, connect the Meter as follows: Red 1. Insert the red test lead into the V Hz terminal and the black test lead into the COM terminal. 2. Set the rotary switch to %Hz.
Model UT207/208: OPERATING MANUAL 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.
Model UT207/208: OPERATING MANUAL F. Duty Cycle Measurement (see figure 8) Warning To avoid harms to you or damages to the Meter from eletric shock, do not attempt to measure voltages higher than 600V AC/DC, although readings may be obtained. The duty cycle range is: 0.1%~99.9%. To measure duty cycle, connect the Meter as follows: 1. Insert the red test lead into the V Hz terminal and the black test lead into the COM terminal. 2. Set the rotary switch to %Hz. Press SELECT to switch to % measurement mode.
Model UT207/208: OPERATING MANUAL Note When duty cycle 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.
Model UT207/208: OPERATING MANUAL G. DC Current Measurement (see figure 9) The measurement ranges of current are: 66A and 1000A . To measure current, do the following: 1. Set the rotary switch to 66A or 1000A . 2. Hold the Meter tight, don’t release. 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. 3. Press the lever to open the transformer jaw. 4.
Model UT207/208: OPERATING MANUAL conductor at a time, to meausre more than one condutor at a time will cause deviation. Note If the Meter does not display 00.00 when it is at 66A range, press ZERO to zeroing. After zeroing, it allows 10 digits bouncing reading. When the Meter is at 1000A , it displays 0 and it is not allowed to press ZERO to zeroing.
Model UT207/208: OPERATING MANUAL H. AC Current Measurement (see figure 10) Warning The measurement ranges of current are: 66.00A and 1000A . To measure AC current, do the following: 1. Set the rotary switch to 66A or 1000A . 2. Hold the Meter tight, don’t release. 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. 3. Press the lever to open the transformer jaw. 4.
Model UT207/208: OPERATING MANUAL 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. 5. When the measuring current >1A, press Hz button to step through AC current, frequency and duty cycle measurement mode. But the frequency or duty cycle readings obtained from this range is only for reference. 6. Press SELECT to carry out surge current measurement.
Model UT207/208: OPERATING MANUAL Note When current measurement has been completed, disconnect the connection between the conductor under test and the jaw, and remove the conductor away from the transformer jaw of the Meter.
Model UT207/208: OPERATING MANUAL I. UT208 only: Temperature Measurement (see figure 11) The temperature measurement range: -40 ~1000 and -40 ~1832 . To measure temperature measurement, connect the Meter as follows: 1. Insert the red temperature probe into the V Hz terminal and the black temperature probe into the COM terminal. 2. Set the rotary switch to . Press SELECT to switch between and measurement mode. 3. Place the temperature probe to the object being measured.
Model UT207/208: OPERATING MANUAL Note When the Meter is at range, it beeps to remind user to insert temperature probe. The Meter automatically displays the room temperature when the temperature probe is inserted but without any input. The included point contact temperature probe can only be used up to 230 . For any measurement is higher than that, the rod type temperature probe must be used.
Model UT207/208: OPERATING MANUAL Sleep Mode To preserve battery life, the Meter automatically turns off if you do not turn the rotary switch or press any button for around 15 minutes. The Meter beeps 3 times in one minute before entering Sleep Mode and long beep one time just before entering Sleep Mode.
Model UT207/208: OPERATING MANUAL Specifications A. General Specifications: Maximum Voltage between any Terminals and grounding: Refer to different range input protection voltage. Display: 3 5/6 digits LCD display, Maximum display 6666. Polarity: Auto Overloading: Display OL or –OL. Battery Deficiency: Display . Sampling: 3 times per second.
Model UT207/208: OPERATING MANUAL Battery Life: typically 150 hours (alkaline battery) Dimensions: 285.3mm x 105mm x 44.5mm Weight: Approximate 533g (battery included) B. Environmental Requirements The Meter is suitable for indoor use. Altitude: Operating: 2000m Storage: 10000m Safety/ Compliances: IEC61010-1; IEC61010-2-032. CAT.II 600V, CAT.III 300V over voltage and double insulation standard, pollution degree 2. Temperature and humidity: Operating: 0 ~30 ( 80%R.H) 30 ~40 ( 75%R.H) 40 ~50 ( 45%R.
Model UT207/208: OPERATING MANUAL Accurate Specifications Accuracy: (a% reading + b digits), guarantee for 1 year. Operating temperature: 23 5 Relative humidity: 80%R.H Temperature coefficient: 0.1x(specified accuracy)/1 A. DC Voltage Range 6.600V 66.00V 600.0V Resolution 1mV 10mV 100mV Accuracy (0.
Model UT207/208: OPERATING MANUAL B. AC Voltage Range 6.600V 66.00V 600.0V Resolution 1mV 10mV 100mV Accuracy (1.2%+5) Overload protection 600V DC/AC Remarks: Input Impedance: 10M Frequency Response: 40Hz~400Hz Change to AC: Combine 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.
Model UT207/208: OPERATING MANUAL C. Resistance Range 660.0Ω 6.600kΩ 66.00kΩ 660.0kΩ 6.600MΩ 66.00MΩ Resolution 0.1Ω 1Ω 10Ω 100Ω 1kΩ 10kΩ Accuracy (1.2%+2) (1%+2) Overload protection 250VAC (1.2%+2) (1.5%+2) D. Diode Test Range Resolution 1mV Accuracy 0.5V~0.8V (Open circuit voltage approx. 3.
Model UT207/208: OPERATING MANUAL E. Continuity Test Range Resolution 0.1 Accuracy Around 30Ω,the buzzer beeps. (Open circuit voltage approx. –1.2V) Overload protection 250VAC Remark: The buzzer may or may not beeps when the resistance of a circuit under test is between 30Ω~100Ω.
Model UT207/208: OPERATING MANUAL F. Frequency Range 660.0Hz 6.600kHz 66.00kHz 660.0kHz 6.600MHz 66.00MHz Resolution 0.1Hz 0.001kHz 0.01kHz 0.1kHz 0.001MHz 0.01MHz Accuracy (0.
Model UT207/208: OPERATING MANUAL G. Duty Cycle Range 0.1%~99.9% Resolution 0.1% Accuracy For reference only Overload protection 250VAC H. DC Current Range 66.00A 1000A Resolution 0.01A 1A Accuracy (2%+40) (2%+8) Overload protection 250VAC Warning The operating temperature must be 0 ~ 40 45 when measuring current.
Model UT207/208: OPERATING MANUAL Remarks: If the reading is positive, the current direction is from bottom to up. See figure 10, the front case face up while the bottom case face down. Hold the Meter tight, do not release. The Hall components are very sensitive 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. Follow the below procedure to measure current will be more precise: 1. Turn off the current of tested conductor. 2.
Model UT207/208: OPERATING MANUAL I. AC Current Range Resolution 66.00A 1000A 0.01A 1A Accuracy Frequency Response 50Hz ~ 60Hz (2%+40) (2%+8) Overload protection 250VAC Warning The operating temperature must be 0 ~40 when measuring current. Remarks: It may have unstable or wrong sensed readings, it will not affect measurement result. Hold the Meter tight, do now release. The Hall components are very sensitive not only to the magnet but also to heat and machines reaction force.
Model UT207/208: OPERATING MANUAL 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. J.
Model UT207/208: 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 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.
Model UT207/208: OPERATING MANUAL B. Replacing the Battery (see figure 12) 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 tets leads are disconected from the circuit being tested before opening the case bottom.
Model UT207/208: OPERATING MANUAL To replace the battery: 1. Turn the Meter off and remove all the connections from the input terminals 2. Turn the Meter’s front case down. 3. Remove the screw from the battery compartment, and separate the battery compartment from the case bottom. 4. Take out the old battery and replace with a new 9V battery (6LF22, 1604A). 5. Rejoin the case bottom and the battery compartment, and reinstall the screw.
Model UT207/208: OPERATING MANUAL * END * This operating manual is subject to change without notice.
Model UT207/208: OPERATING MANUAL Copyright 2007 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.
