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Clamp Meter
With T T emperature
Table of Contents
Title
Overview ------------------------------------------------------------------------------------------------------------------------------- 2
Unpacking Inspection --------------------------------------------------------------------------------------------------------------- 2
Safety Information ------------------------------------------------------------------------------------------------------------------- 2
Rules for Safe Operation ----------------------------------------------------------------------------------------------------------- 3
International Electrical Symbols -------------------------------------------------------------------------------------------------- 4
The Meter Structure ----------------------------------------------------------------------------------------------------------------- 4
Rotary Switch ------------------------------------------------------------------------------------------------------------------------- 5
Functional Buttons ------------------------------------------------------------------------------------------------------------------- 5
The Effectiveness of Functional Buttons --------------------------------------------------------------------------------------- 5
Display Symbols ---------------------------------------------------------------------------------------------------------------------- 6
Measurement Operation ------------------------------------------------------------------------------------------------------------7
A. DC Voltage Measurement ---------------------------------------------------------------------------------------------------- 7
B. AC Voltage Measurement ---------------------------------------------------------------------------------------------------- 8
C. Measuring Resistance -------------------------------------------------------------------------------------------------------- 9
D. Testing Diodes ------------------------------------------------------------------------------------------------------------------ 10
E. Testing for Continuity ---------------------------------------------------------------------------------------------------------- 11
F. Temperature Measurement -------------------------------------------------------------------------------------------------- 12
G. AC Current Measurement ---------------------------------------------------------------------------------------------------- 13
Sleep Mode --------------------------------------------------------------------------------------------------------------------------- 14
Specifications ------------------------------------------------------------------------------------------------------------------------- 14
A. General Specifications -------------------------------------------------------------------------------------------------------- 14
B. Environmental Restriction ---------------------------------------------------------------------------------------------------- 15
Accuracy Specifications ----------------------------------------------------------------------------------------------------------- 15
A. AC Voltage ----------------------------------------------------------------------------------------------------------------------- 15
B. DC Voltage ----------------------------------------------------------------------------------------------------------------------- 16
C. Resistance ------------------------------------------------------------------------------------------------------------------------ 16
D. Continuity Test ------------------------------------------------------------------------------------------------------------------- 17
E. Diode Test ------------------------------------------------------------------------------------------------------------------------ 17
F. Temperature ---------------------------------------------------------------------------------------------------------------------- 17
G. AC Current ------------------------------------------------------------------------------------------------------------------------ 18
Maintenance --------------------------------------------------------------------------------------------------------------------------- 18
A. General Service ----------------------------------------------------------------------------------------------------------------- 18
B. Replacing the Battery ---------------------------------------------------------------------------------------------------------- 19
http://www.farnell.com
http://www.newark.com
http://www.cpc.co.uk
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20/09/10 V1.1
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Summary of Contents for Tenma UT202
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Page 1: Table Of Contents
Clamp Meter With T T emperature Table of Contents Title Page Overview ------------------------------------------------------------------------------------------------------------------------------- 2 Unpacking Inspection --------------------------------------------------------------------------------------------------------------- 2 Safety Information ------------------------------------------------------------------------------------------------------------------- 2 Rules for Safe Operation ----------------------------------------------------------------------------------------------------------- 3 International Electrical Symbols -------------------------------------------------------------------------------------------------- 4 The Meter Structure ----------------------------------------------------------------------------------------------------------------- 4 Rotary Switch ------------------------------------------------------------------------------------------------------------------------- 5 Functional Buttons ------------------------------------------------------------------------------------------------------------------- 5 The Effectiveness of Functional Buttons --------------------------------------------------------------------------------------- 5 Display Symbols ---------------------------------------------------------------------------------------------------------------------- 6... -
Page 2: Overview
To avoid electric shock or personal injury, read the “Safety Information” and “Rules for Safe Operation” carefully before using the Meter. Digital Multimeter Model UT202 (hereafter referred to as “the Meter”) are 3 1/2 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. -
Page 3: Rules For Safe Operation
Clamp Meter With T T emperature 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: • • Before using the Meter inspect the case. -
Page 4: International Electrical Symbols
Clamp Meter With T T emperature Rules For Safe Operation (2) • • 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. •... -
Page 5: Rotary Switch
: Diode test. : Continuity test. Ω Ω Ω Ω : : Resistance measurement. °C°F Temperature measurement (UT202 only) AC current measurement from 0.001A to 400.0A Functional Buttons(1) Below table indicated for information about the functional button operations. Voltage measurement. -
Page 6: Display Symbols
Clamp Meter With T T emperature Display Symbols(1) (see figure 2) Symbol 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. -
Page 7: Measurement Operation
Clamp Meter With T T emperature Display Symbols(2) (see figure 2) Symbol Meaning Amperes (amps). The unit of current. Volts. The unit of voltage.mV: Millivolt. mV, V 1x10 or 0.001 volts Indicates negative reading The input value is too large for the selected range Measurement Operation(1) A. -
Page 8: Ac Voltage Measurement
Clamp Meter With T T emperature Note • • 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). Measurement Operation(2) •... -
Page 9: Measuring Resistance
Clamp Meter With T T emperature • • 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.Measuring Resistance (see figure 5) (Figure 5) Warning To avoid harms to you, do not attempt to input voltages higher than 60V DC or 30V rms AC. -
Page 10: Testing Diodes
Clamp Meter With T T emperature • • The LCD displays OL indicating open-circuit or the tested resistor value is higher than the maximum range of the Meter. • • Resistance measurement is default to auto range mode. To remove the objects being tested from the circuit when measuring can obtain a more accurate result. -
Page 11: Testing For Continuity
Clamp Meter With T T emperature Measurement Operation(6) Note • • 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. •... -
Page 12: Temperature Measurement
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. Measurement Operation(8) F. Temperature Measurement (UT202 Only) (see figure 8) The temperature measurement ranges are -40°C to 1000°C and -40°F to 1832°F. To measure temperature, connect the Meter as follows: 1. -
Page 13: Ac Current Measurement
Clamp Meter With T T emperature Measurement Operation(9) G. AC Current Measurement (see 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 measurement where the open-circuit voltage between the circuit and the ground is greater than 600V Use proper function and range for the measurement. -
Page 14: Sleep Mode
The Meter can be activated by turning the rotary switch or pressing any button with the following conditions: 1) When the Meter is entered Sleep Mode at temperature functions of Model: UT202, the Meter cannot be activated by turning the rotary switch to AC current ranges. -
Page 15: Environmental Restriction
Clamp Meter With T T emperature B. Environmental Restrictions: • • The Meter is suitable for indoor use. • • Altitude : Operating: 2000m Storage: 10000m • • Safety/ Compliances : IEC 61010 CAT.II 600V, CAT.III 300V over voltage and double insulation standard. •... -
Page 16: Dc Voltage
Clamp Meter With T T emperature B. DC Voltage: Auto ranging Range Resolution Accuracy Overload Protection ±(0.8%+3) 200.0mV 0.1mV 2.000V 600V rms ±(0.8%+1) 20.00V 10mV 200.0V 100mV ±(1%+3) 600V Remarks: Input impedance: 10MΩ. Accurate Specifications(2) C. Resistance: Auto ranging Range Resolution Accuracy Overload... -
Page 17: Continuity Test
Overload Protection Display approximate forward voltage drop 600Vp : 0.5V to 0.8V Remarks: Open circuit voltage approximate 1.48V. Accurate Specifications(3) F. Temperature (UT202 Only): Range Resolution Accuracy Overload Protection -40 to 0°C: ±(3%+4) 1°C -40 to 1000°C 0 to 400°C: ±(1%+3) 600Vp 400 to 1000°C: ±(2%+10) -
Page 18: Ac Current
Clamp Meter With T T emperature G. AC Current: Auto ranging Range Resolution Accuracy Frequency Overload Response Protection 2.000A 0.001A <1A(4%+40) ≥1A(3%+30) ±(3%+12) ≤4A 20.00A 0.01A 50Hz to 60Hz 400A rms ±(2%+8) 200.0A 0.1A ±(1.5%+5) 400A Remarks: • • Displays effective value of sine wave (mean value response). To adjust reading in accordance with effective value MAINTENANCE(1) This section provides basic maintenance information including battery replacement instruction. -
Page 19: Replacing The Battery
Information or use of it (including liability resulting from negligence or where the Group was aware of the possibility of such loss or damage arising) is excluded. This will not operate to limit or restrict the Group's liability for death or personal injury resulting from its negligence. TENMA is the registered trademark of the Group. © Premier Farnell plc 2010.
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