Model UT201/202: OPERATING MANUAL Table of Contents Title Page Overview Unpacking Inspection Safety Information Rules For Safe Operation International Electrical Symbols The Meter Structure Rotary Switch Functional Buttons The Effectiveness of Functional Buttons Display Symbols Measurement Operation A. DC Voltage Measurement B. AC Voltage Measurement C. Measuring Resistance D. Testing Diodes E. Testing for Continuity F. Temperature Measurement G. AC Current Measurement Sleep Mode Specifications A.
Model UT201/202: OPERATING MANUAL 2
Model UT201/202: 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 UT201/202: 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 Description English Operating Manual Test Lead Point Contact Temperature Probe (UT202 only) 1.5V Battery (AAA) Qty 1 piece 1 pair 1 piece 2 pieces In the event you find any missing or damage, please contact your dealer immediately.
Model UT201/202: 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. III: Distribution level, fixed installation, with smaller transient overvoltages than CAT.
Model UT201/202: OPERATING MANUAL Rules For Safe Operation (1) 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: l 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.
Model UT201/202: OPERATING MANUAL Rules For Safe Operation (2) l l l l l l l l l l l l When the Meter working at an effective voltage over 60V in DC or 30V rms in AC, special care should be taken for there is danger of electric shock. Use the proper terminals, function, and range for your measurements. 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.
Model UT201/202: OPERATING MANUAL International Electrical Symbols AC (Alternating Current). DC (Direct Current). AC or DC. Grounding. Double Insulated. Deficiency of Built-In Battery Continuity Test. Diode. Capacitance Test Fuse. Warning. Refer to the Operating Manual. Conforms to Standards of European Union.
Model UT201/202: OPERATING MANUAL The Meter Structure (see figure 1) ( figure 1) 1. 2. 3. 4. 5. 6. 7. Input Terminals LCD Display Functional Buttons Rotary Switch Trigger: press the lever to open the transformer jaws. When the pressure on the lever is released, the jaws will close. Hand Guards: to protect user’s hand from touching the dangerous area. Transformer Jaws: designed to pick up the AC current flowing through the conductor. It could transfer current to voltage.
Model UT201/202: OPERATING MANUAL Rotary Switch Below table indicated for information about the rotary switch positions. Rotary Function Switch Position OFF Power is turned off. AC/DC voltage measurement. : Diode test. : Continuity test. Ω o Ω : Resistance measurement. o CF A Temperature measurement (UT202 only) AC current measurement range from 0.001A to 400.
Model UT201/202: OPERATING MANUAL Functional Buttons(1) Below table indicated for information about the functional button operations. AC voltage measurement. l Press HOLD to enter and exit the HOLD Hold mode in any mode, the Meter beeps. l Press and hold HOLD button while turning on the Meter to display full icons. MAX Press MAX to start recording and updating of maximum values. SELECT Press SELECT button to switch between o o Ω and C F .
Model UT201/202: OPERATING MANUAL The Effectiveness of Functional Buttons Not every functional buttons can be used on every rotary switch positions.
Model UT201/202: OPERATING MANUAL Display Symbols(1) (see figure 2) No. Symbol 1 AC 2 DC 3 4 5 6 7 8 9 MAX 10 Ω,kΩ,MΩ o Meaning Indicator for AC voltage or current 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 Meter is in the auto range mode in which the Meter automatically selects the range with the best resolution. Test of diode.
Model UT201/202: OPERATING MANUAL Display Symbols(2) (see figure 2) No. Symbol 11 A mV, V 12 13 14 OL Meaning Amperes (amps). The unit of current. Volts. The unit of voltage.mV: Millivolt. 1x10-3 or 0.
Model UT201/202: OPERATING MANUAL Measurement Operation(1) A. DC Voltage Measurement (see figure 3) red black ( 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. The DC Voltage ranges are: 200.0mV, 2.000V, 20.00V, 200.0V and 600V. To measure DC voltage, connect the Meter as follows: 1. Insert the red test lead into the VΩ terminal and the black test lead into the COM terminal.
Model UT201/202: OPERATING MANUAL Measurement Operation(2) l When DC 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. AC Voltage Measurement (see figure 4) red black ( figure 4) 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 UT201/202: OPERATING MANUAL Measurement Operation(3) Note l In each range, the Meter has an input impedance of 10MΩ. This loading effect can cause measurement errors in high impedance circuits. If the circuit impedance is less than or equal to 10kΩ, the error is negligible (0.1 or less). l When 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. C.
Model UT201/202: OPERATING MANUAL Measurement Operation(5) D.Testing Diodes (see figure 6) red black ( 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 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.
Model UT201/202: OPERATING MANUAL Measurement Operation(6) Note l In a circuit, a good diode should still produce a forward voltage drop reading of 0.5V to 0.8; however, the reverse voltage drop reading can vary depending on the resistance of other pathways between the probe tips. l Connect the test leads to the proper terminals as said above to avoid error display. l The LCD will display OL indicating either open circuit or wrong polarity connection.
Model UT201/202: OPERATING MANUAL Measurement Operation(7) 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 VΩ terminal and the black test lead into the COM terminal. 2. Set the rotary switch to Ω and press SELECT button to select measurement mode. 3.
Model UT201/202: OPERATING MANUAL Measurement Operation(8) F. Temperature Measurement (UT202 Only) (see figure 8) red black ( figure 8) o o The temperature measurement ranges are -40 C~1000 C o o and -40 F~1832 F. To measure temperature, connect the Meter as follows: 1. Insert the red temperature probe into the VΩ terminal and the black temperature probe into the COM terminal. o o 2. Set the rotary switch to F C and press SELECT button o o o to select F or C measurement mode.
Model UT201/202: OPERATING MANUAL Measurement Operation(9) G. AC Current Measurement (see figure 9) ( figure 9) Warning To avoid electric shock, never measure current while the test leads are inserted into the input terminals and disconnect test leads and tested circuit connection. Never attempt an in-circuit current measuremnet where the open-circuit voltage between the circuit and the ground is greater than 600V Use proper function and range for the measurement.
Model UT201/202: OPERATING MANUAL Measurement Operation(10) Note: l To obtain accurate reading, measure only one conductor at each time. l 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 UT201/202: OPERATING MANUAL Copyright 2001 Uni-Trend International Limited. All rights reserved. Manufacturer: Uni-Trend International 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.
