Model UT207/208 OPERATING MANUAL · 2014. 1. 17. · In this manual, a Warning identifies...
Transcript of Model UT207/208 OPERATING MANUAL · 2014. 1. 17. · In this manual, a Warning identifies...
![Page 1: Model UT207/208 OPERATING MANUAL · 2014. 1. 17. · In this manual, a Warning identifies conditions and actions that pose hazards to the user, or may damage the Meter or the equipment](https://reader035.fdocuments.in/reader035/viewer/2022071611/614a9e9c12c9616cbc698892/html5/thumbnails/1.jpg)
Model UT207/208OPERATING MANUAL
![Page 2: Model UT207/208 OPERATING MANUAL · 2014. 1. 17. · In this manual, a Warning identifies conditions and actions that pose hazards to the user, or may damage the Meter or the equipment](https://reader035.fdocuments.in/reader035/viewer/2022071611/614a9e9c12c9616cbc698892/html5/thumbnails/2.jpg)
Table of Contents
Title PageOverviewUnpacking InspectionSafety InformationRules For Safe OperationInternational Electrical SymbolsThe Meter StructureFunctional ButtonsThe Effectiveness of Functional ButtonsDisplay SymbolsMeasurement Operation A. DC/AC Voltage Measurement B. Measuring Resistance C. Testing Diodes D. Testing for Continuity E. Frequency Measurement F. Duty Cycle Measurement
4567101112141518182022242628
Model UT207/208: OPERATING MANUAL
1
![Page 3: Model UT207/208 OPERATING MANUAL · 2014. 1. 17. · In this manual, a Warning identifies conditions and actions that pose hazards to the user, or may damage the Meter or the equipment](https://reader035.fdocuments.in/reader035/viewer/2022071611/614a9e9c12c9616cbc698892/html5/thumbnails/3.jpg)
Title Page
30323537383839404041424243444545
G. DC Current Measurement H. AC Current Measurement I. UT208 only: Temperature MeasurementSleep ModeSpecifications A. General Specifications B. Environmental RequirementsAccuracy Specifications A. DC Voltage B. AC Voltage C. Resistance D. Diode Test E. Continuity Test F. Frequency G. Duty Cycle H. DC Current
Model UT207/208: OPERATING MANUAL
2
![Page 4: Model UT207/208 OPERATING MANUAL · 2014. 1. 17. · In this manual, a Warning identifies conditions and actions that pose hazards to the user, or may damage the Meter or the equipment](https://reader035.fdocuments.in/reader035/viewer/2022071611/614a9e9c12c9616cbc698892/html5/thumbnails/4.jpg)
Title Page
4748494950
I. AC Current J. Temperature (UT208 only)Maintenance A. General Service B. Replacing the Battery
Model UT207/208: OPERATING MANUAL
3
![Page 5: Model UT207/208 OPERATING MANUAL · 2014. 1. 17. · In this manual, a Warning identifies conditions and actions that pose hazards to the user, or may damage the Meter or the equipment](https://reader035.fdocuments.in/reader035/viewer/2022071611/614a9e9c12c9616cbc698892/html5/thumbnails/5.jpg)
OverviewThis Operating Manual covers information on safety and cautions. Please read therelevant 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.
Digital Clamp Multimeter Model UT207/UT208 (hereafter referred to as “the Meter”)are 3 5/6 digits with steady operations, fashionable structure and highly reliablemeasuring instrument. The Meter uses large scale of integrated circuit with doubleintegrated 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, Continuity, Surge Current and etc.
UT208 has an extra temperature feature.
Model UT207/208: OPERATING MANUAL
4
![Page 6: Model UT207/208 OPERATING MANUAL · 2014. 1. 17. · In this manual, a Warning identifies conditions and actions that pose hazards to the user, or may damage the Meter or the equipment](https://reader035.fdocuments.in/reader035/viewer/2022071611/614a9e9c12c9616cbc698892/html5/thumbnails/6.jpg)
Item Description Qty
123
45
English Operating ManualTest LeadPoint Contact Temperature Probe (Only UT208) (Thisincluded point contact temperature probe can only be usedup to 230 . For any measurement is higher than that, therod type temperature probe must be used)Tool box9V Battery (NEDA1604A or 6LF22)
1 piece1 pair1 pair
1 piece1 piece
Unpacking InspectionOpen the package case and take out the Meter. Check the following items carefullyto see any missing or damaged part:
In the event you find any missing or damage, please contact your dealer immediately.
Model UT207/208: OPERATING MANUAL
5
![Page 7: Model UT207/208 OPERATING MANUAL · 2014. 1. 17. · In this manual, a Warning identifies conditions and actions that pose hazards to the user, or may damage the Meter or the equipment](https://reader035.fdocuments.in/reader035/viewer/2022071611/614a9e9c12c9616cbc698892/html5/thumbnails/7.jpg)
Safety Information
This Meter complies with the standards IEC61010-1; IEC61010-2-032: in pollutiondegree 2, overvoltage category (CAT. II 600V, CAT. III 300V) and double insulation.
CAT. II: Local level, appliance, PORTABLE EQUIPMENT etc., with smaller transientovervoltages than CAT. III.CAT. III: Distribution level, fixed installation, with smaller transient overvoltages thanCAT. IV
Use the Meter only as specified in this operating manual, otherwise the protectionprovided by the Meter may be impaired.
In this manual, a Warning identifies conditions and actions that pose hazards to theuser, or may damage the Meter or the equipment under test.
A Note identifies the information that user should pay attention to.
International electrical symbols used on the Meter and in this Operating Manual areexplained on page 10.
Model UT207/208: OPERATING MANUAL
6
![Page 8: Model UT207/208 OPERATING MANUAL · 2014. 1. 17. · In this manual, a Warning identifies conditions and actions that pose hazards to the user, or may damage the Meter or the equipment](https://reader035.fdocuments.in/reader035/viewer/2022071611/614a9e9c12c9616cbc698892/html5/thumbnails/8.jpg)
Rules For Safe Operation
To avoid possible electric shock or personal injury, and to avoid possibledamage to the Meter or to the equipment under test, adhere to the followingrules:
Warning
Before using the Meter inspect the case. Do not use the Meter if it isdamaged or the case (or part of the case) is removed. Look for cracks ormissing plastic. Pay attention to the insulation around the connectors.Inspect the test leads for damaged insulation or exposed metal. Check thetest leads for continuity. Replace damaged test leads with identical modelnumber or electrical specifications before using the Meter.Do not apply more that the rated voltage, as marked on the Meter , betweenthe terminals or between any terminal and grounding. If the value to bemeasured is unknown, use the maximum measurement position and reducethe range step by step until a satisfactory reading is obtained.When measurement has been completed, disconnect the connection betweenthe test leads and the circuit under test, remove the testing leads awayl
Model UT207/208: OPERATING MANUAL
7
![Page 9: Model UT207/208 OPERATING MANUAL · 2014. 1. 17. · In this manual, a Warning identifies conditions and actions that pose hazards to the user, or may damage the Meter or the equipment](https://reader035.fdocuments.in/reader035/viewer/2022071611/614a9e9c12c9616cbc698892/html5/thumbnails/9.jpg)
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 anychangeover of range shall be made during measurement is conducted toprevent damage of the Meter.Do not carry out the measurement when the Meter’s back case and batterycompartment are not closed to avoid electric shock.Do not input higher than 600V between the two Meter’s input terminal toavoid electric shock and damages to the Meter.When the Meter working at an effective voltage over 70V in DC or 33V rmsin 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 performanceof the Meter may deteriorate after dampened.When using the test leads, keep your fingers behind the finger guards.To avoid electric shock, do not touch the bare wires, connectors, unusedinput terminals or the circuit under testing during measurement.Disconnect circuit power and discharge all high-voltage capacitors beforetesting resistance, continuity and diode.
Model UT207/208: OPERATING MANUAL
8
![Page 10: Model UT207/208 OPERATING MANUAL · 2014. 1. 17. · In this manual, a Warning identifies conditions and actions that pose hazards to the user, or may damage the Meter or the equipment](https://reader035.fdocuments.in/reader035/viewer/2022071611/614a9e9c12c9616cbc698892/html5/thumbnails/10.jpg)
Replace the battery as soon as the battery indicator appears. With alow battery, the Meter might produce false readings that can lead to electricshock and personal injury.When servicing the Meter, use only the same model number or identicalelectrical specifications replacement parts.The internal circuit of the Meter shall not be altered at will to avoid damageof the Meter and any accident.Soft cloth and mild detergent should be used to clean the surface of theMeter when servicing. No abrasive and solvent should be used to preventthe 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 notusing for a long time.Constantly check the battery as it may leak when it has been using forsome time, replace the battery as soon as leaking appears. A leaking batterywill damage the Meter.
Model UT207/208: OPERATING MANUAL
9
![Page 11: Model UT207/208 OPERATING MANUAL · 2014. 1. 17. · In this manual, a Warning identifies conditions and actions that pose hazards to the user, or may damage the Meter or the equipment](https://reader035.fdocuments.in/reader035/viewer/2022071611/614a9e9c12c9616cbc698892/html5/thumbnails/11.jpg)
International Electrical Symbols
AC (Alternating Current)DC (Direct Current)AC or DCGroundingDouble InsulatedWarning. Refer to the Operating ManualDeficiency of Built-In BatteryContinuity TestDiodeDanger of High VoltageConforms to Standards of European Union
Model UT207/208: OPERATING MANUAL
10
![Page 12: Model UT207/208 OPERATING MANUAL · 2014. 1. 17. · In this manual, a Warning identifies conditions and actions that pose hazards to the user, or may damage the Meter or the equipment](https://reader035.fdocuments.in/reader035/viewer/2022071611/614a9e9c12c9616cbc698892/html5/thumbnails/12.jpg)
Figure 1
The Meter Structure (see figure 1)
Hand Guards: to protect user’s handfrom touching the dangerous area.Trigger: press the lever to open thetransformer jaws. When the pressureon the lever is released, the jaws willclose.Functional ButtonsInput TerminalsLCD DisplayRotary SwitchTransformer Jaw: designed to pick upthe AC and DC current flowing throughthe conductor. It could transfer currentto voltage. The tested conductor mustvertically go through the Jaw center.
1.
2.
3.4.5.6.7.
Model UT207/208: OPERATING MANUAL
11
![Page 13: Model UT207/208 OPERATING MANUAL · 2014. 1. 17. · In this manual, a Warning identifies conditions and actions that pose hazards to the user, or may damage the Meter or the equipment](https://reader035.fdocuments.in/reader035/viewer/2022071611/614a9e9c12c9616cbc698892/html5/thumbnails/13.jpg)
Press SELECT button to select the alternate functions includingV , , %Hz, A and (UT208 only).Starts recording of maximum and minimum values.Press to step the display through high (MAX) and low (MIN) readingsat any mode. Press and hold for one second to exit MAX/MIN mode. Press again to turn the display backlight off, otherwise it will automatically off after 1 minute.
Functional ButtonsBelow table indicated for information about the functional button operations.
Button Operation Performed
SELECT
MAX/MIN
Press HOLD to enter the Hold mode in any mode, the Meterbeeps.Press HOLD again to exit the Hold mode to return to measurementmode, the Meter beeps.Turn the rotary switch or press SELECT button can also exitHold mode.
HOLD
Model UT207/208: OPERATING MANUAL
12
![Page 14: Model UT207/208 OPERATING MANUAL · 2014. 1. 17. · In this manual, a Warning identifies conditions and actions that pose hazards to the user, or may damage the Meter or the equipment](https://reader035.fdocuments.in/reader035/viewer/2022071611/614a9e9c12c9616cbc698892/html5/thumbnails/14.jpg)
Press HOLD button for 2 seconds when turning on the Meter todisplay full icon.
Button Operation Performed
HOLD
When the Meter is at %Hz, V and A , press Hz to measurefrequency and duty cycle.
Hz
ZERO Press ZERO to zeroing the display before measuring DC current.
Model UT207/208: OPERATING MANUAL
13
![Page 15: Model UT207/208 OPERATING MANUAL · 2014. 1. 17. · In this manual, a Warning identifies conditions and actions that pose hazards to the user, or may damage the Meter or the equipment](https://reader035.fdocuments.in/reader035/viewer/2022071611/614a9e9c12c9616cbc698892/html5/thumbnails/15.jpg)
SELECT MAX/MIN HOLD Hz ZERO
N/A
%Hz
66A
1000A66A
1000A
N/A
N/A
N/A
N/AN/AN/A
N/A
N/A
N/A
N/A
N/A
N/A
Rotary SwitchPositions
V
Functional Buttons
The Effectiveness of Functional Buttons
oC oF
Not every functional buttons can be used on every rotary switch positions. Belowtable describe which functional buttons can be used on which rotary switch positions
Model UT207/208: OPERATING MANUAL
14
![Page 16: Model UT207/208 OPERATING MANUAL · 2014. 1. 17. · In this manual, a Warning identifies conditions and actions that pose hazards to the user, or may damage the Meter or the equipment](https://reader035.fdocuments.in/reader035/viewer/2022071611/614a9e9c12c9616cbc698892/html5/thumbnails/16.jpg)
Figure 2
Display Symbols (see figure 2)
Model UT207/208: OPERATING MANUAL
15
![Page 17: Model UT207/208 OPERATING MANUAL · 2014. 1. 17. · In this manual, a Warning identifies conditions and actions that pose hazards to the user, or may damage the Meter or the equipment](https://reader035.fdocuments.in/reader035/viewer/2022071611/614a9e9c12c9616cbc698892/html5/thumbnails/17.jpg)
Number Symbol Meaning
123456
7891011
INRUSHMINMAXZERO
Indicator for Surge currentMinimum reading displayedMaximum reading displayedIndicator for zeroingData hold is activeThe Meter is in the auto range mode in which theMeter automatically selects the range with the bestresolution.True RMS indicatorIndicator for AC voltage or currentIndicates negative readingIndicator for DC voltageThe battery is low. Warning: To avoid false readings, whichcould lead to possible electric shock orpersonal injury, replace the battery as soon asthe battery indicator appears.
HAUTO
RMSAC
DC
Model UT207/208: OPERATING MANUAL
16
![Page 18: Model UT207/208 OPERATING MANUAL · 2014. 1. 17. · In this manual, a Warning identifies conditions and actions that pose hazards to the user, or may damage the Meter or the equipment](https://reader035.fdocuments.in/reader035/viewer/2022071611/614a9e9c12c9616cbc698892/html5/thumbnails/18.jpg)
Number Symbol Meaning
12131415
16
17
1819
20
21
Sleep mode is onTest of diodeThe continuity buzzer is on
: Ohm. The unit of resistance.k :Kilohm. 1x103 or 1000 ohmsM :Megohm. 1x106 or 1,000,000 ohmsHz: 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 voltsAmperes (amps). The unit of current.The unit of temperature:
: Centigrade temperatureThe unit of temperature:
: Fahrenheit temperatureDuty cycle measurement
,K ,M
Hz, kHz, MHz
mV, V
A
%
Model UT207/208: OPERATING MANUAL
17
![Page 19: Model UT207/208 OPERATING MANUAL · 2014. 1. 17. · In this manual, a Warning identifies conditions and actions that pose hazards to the user, or may damage the Meter or the equipment](https://reader035.fdocuments.in/reader035/viewer/2022071611/614a9e9c12c9616cbc698892/html5/thumbnails/19.jpg)
A. DC/AC Voltage Measurement (see figure 3)
To avoid harms to you or damages to the Meter from eletric shock, do notattempt to measure voltages higher than 600V AC/DC, although readings maybe obtained.
Red BlackRed Black
Measurement Operation
Figure 3
Warning
Model UT207/208: OPERATING MANUAL
18
![Page 20: Model UT207/208 OPERATING MANUAL · 2014. 1. 17. · In this manual, a Warning identifies conditions and actions that pose hazards to the user, or may damage the Meter or the equipment](https://reader035.fdocuments.in/reader035/viewer/2022071611/614a9e9c12c9616cbc698892/html5/thumbnails/20.jpg)
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:
Insert the red test lead into the V Hz terminal and black test lead into the COMterminal.Set the rotary switch to V . DC mesaurement mode and auto ranging is adefault. Press SELECT to switch to AC measurement mode.Press Hz button to measure frequency or duty cycle, but the frequency or dutycycle readings obtained from this range is only for reference.Connect the test leads across with the object being measured.The measured value shows on the display.
1.
2.
3.
4.
Note
When DC/AC voltage measurement has been completed, disconnect the connectionbetween the testing leads and the circuit under test and remove testing leadsfrom the input terminals.
Model UT207/208: OPERATING MANUAL
19
![Page 21: Model UT207/208 OPERATING MANUAL · 2014. 1. 17. · In this manual, a Warning identifies conditions and actions that pose hazards to the user, or may damage the Meter or the equipment](https://reader035.fdocuments.in/reader035/viewer/2022071611/614a9e9c12c9616cbc698892/html5/thumbnails/21.jpg)
B. Measuring Resistance (see figure 4)
To avoid damages to the Meter or to the devicesunder test, disconnect circuit power anddischarge all the high-voltage capacitors beforemeasuring resistance.
The resistance ranges are:660 , 6.6k , 66k , 660k , 6.6M and 66M
To measure resistance, connect the Meter asfollows:
Insert the red test lead into the V Hz terminaland black test lead into the COM terminal.Set the rotary switch to . Resistancemeasurement is a default or press SELECTto switch to measurement mode.
1.
2.
Red Black
Figure 4
Warning
Model UT207/208: OPERATING MANUAL
20
![Page 22: Model UT207/208 OPERATING MANUAL · 2014. 1. 17. · In this manual, a Warning identifies conditions and actions that pose hazards to the user, or may damage the Meter or the equipment](https://reader035.fdocuments.in/reader035/viewer/2022071611/614a9e9c12c9616cbc698892/html5/thumbnails/22.jpg)
Connect the test leads across with the object being measured.The measured value shows on the display.
3.
Note
To obtain a more precise reading, you could remove the objects being tested fromthe circuit when measuring.When resistance measurement has been completed, disconnect the connectionbetween the testing leads and the circuit under test and remove testing leadsfrom the input terminals.
Model UT207/208: OPERATING MANUAL
21
![Page 23: Model UT207/208 OPERATING MANUAL · 2014. 1. 17. · In this manual, a Warning identifies conditions and actions that pose hazards to the user, or may damage the Meter or the equipment](https://reader035.fdocuments.in/reader035/viewer/2022071611/614a9e9c12c9616cbc698892/html5/thumbnails/23.jpg)
C. Testing Diodes (see figure 5)
To avoid damages to the Meter or to the devicesunder test, disconnect circuit power anddischarge all the high-voltage capacitors beforetesting diodes.
Use the diode test to check diodes, transistors, andother semiconductor devices. The diode test sendsa current through the semicondutor junction, thenmeasure the voltage drop across the junction. Agood silicon junction drops between 0.5V and 0.8V.
To test the diode out of a circuit, connect the Meteras follows:
Figure 5
Warning
Red Black
Model UT207/208: OPERATING MANUAL
22
![Page 24: Model UT207/208 OPERATING MANUAL · 2014. 1. 17. · In this manual, a Warning identifies conditions and actions that pose hazards to the user, or may damage the Meter or the equipment](https://reader035.fdocuments.in/reader035/viewer/2022071611/614a9e9c12c9616cbc698892/html5/thumbnails/24.jpg)
Insert the red test lead into the V Hz terminal and black test lead into the COMterminal.Set the rotary switch to . Press SELECT to switch to measurementmode.For forward voltage drop readings on any semiconductor component, place thered test lead on the component’s anode and place the black test lead on thecomponent’s cathode.
1.
2.
3.
Note
To obtain a more precise reading, you could remove the objects being tested fromthe circuit when measuring.When diode testing has been completed, disconnect the connection between thetesting leads and the circuit under test and remove testing leads from the inputterminals.
Model UT207/208: OPERATING MANUAL
23
![Page 25: Model UT207/208 OPERATING MANUAL · 2014. 1. 17. · In this manual, a Warning identifies conditions and actions that pose hazards to the user, or may damage the Meter or the equipment](https://reader035.fdocuments.in/reader035/viewer/2022071611/614a9e9c12c9616cbc698892/html5/thumbnails/25.jpg)
D. Testing for Continuity (see figure 6)
To avoid damages to the Meter or to the devicesunder test, disconnect circuit power anddischarge all the high-voltage capacitors beforemeasuring continuity.
To test for continuity, connect the Meter as follows:
Insert the red test lead into the V Hz terminaland the black test lead into the COM terminal.Set the rotary switch to and pressSELECT button to select measurement mode.The buzzer sounds if the resistance of a circuitunder test is less than 30 .The buzzer may or may not sound if theresistance of a circuit under test is between 30to 100 .The buzzer does not sound if the resistance of
1.
2.
3.
4.
5.
Red Black
Warning
Figure 6
Model UT207/208: OPERATING MANUAL
24
![Page 26: Model UT207/208 OPERATING MANUAL · 2014. 1. 17. · In this manual, a Warning identifies conditions and actions that pose hazards to the user, or may damage the Meter or the equipment](https://reader035.fdocuments.in/reader035/viewer/2022071611/614a9e9c12c9616cbc698892/html5/thumbnails/26.jpg)
a circuit under test is higher than 100 .
Note
When continuity testing has been completed, disconnect the connection betweenthe testing leads and the circuit under test and remove testing leads from theinput terminals.
Model UT207/208: OPERATING MANUAL
25
![Page 27: Model UT207/208 OPERATING MANUAL · 2014. 1. 17. · In this manual, a Warning identifies conditions and actions that pose hazards to the user, or may damage the Meter or the equipment](https://reader035.fdocuments.in/reader035/viewer/2022071611/614a9e9c12c9616cbc698892/html5/thumbnails/27.jpg)
E. Frequency Measurement (see figure 7)
To avoid harms to you or damages to the Meterfrom eletric shock, do not attempt to measurevoltages higher than 600V AC/DC, althoughreadings may be obtained.
The frequency ranges are:660Hz, 6.6kHz, 66kHz, 660kHz, 6.6MHz and 66MHz.
To measure frequency, connect the Meter as follows:
Insert the red test lead into the V Hz terminaland the black test lead into the COM terminal.Set the rotary switch to %Hz. Frequencymeasurement mode is a default or press SELECTto switch to Hz measurement mode.Connect the test leads across with the object
1.
2.
3.
Red Black
Figure 7
Warning
Model UT207/208: OPERATING MANUAL
26
![Page 28: Model UT207/208 OPERATING MANUAL · 2014. 1. 17. · In this manual, a Warning identifies conditions and actions that pose hazards to the user, or may damage the Meter or the equipment](https://reader035.fdocuments.in/reader035/viewer/2022071611/614a9e9c12c9616cbc698892/html5/thumbnails/28.jpg)
Note
When frequency measurement has been completed, disconnect the connectionbetween the testing leads and the circuit under test, and remove the testing leadsaway from the input terminals of the Meter.
being measured.The measured value shows on the display.
Model UT207/208: OPERATING MANUAL
27
![Page 29: Model UT207/208 OPERATING MANUAL · 2014. 1. 17. · In this manual, a Warning identifies conditions and actions that pose hazards to the user, or may damage the Meter or the equipment](https://reader035.fdocuments.in/reader035/viewer/2022071611/614a9e9c12c9616cbc698892/html5/thumbnails/29.jpg)
F. Duty Cycle Measurement (see figure 8)
To avoid harms to you or damages to the Meterfrom eletric shock, do not attempt to measurevoltages higher than 600V AC/DC, althoughreadings may be obtained.
The duty cycle range is: 0.1%~99.9%.
To measure duty cycle, connect the Meter as follows:
Insert the red test lead into the V Hz terminaland the black test lead into the COM terminal.Set the rotary switch to %Hz. Press SELECT toswitch to % measurement mode.Connect the test leads across with the objectbeing measured.The measured value shows on the display.
1.
2.
3.
Red Black
Warning
Figure 8
Model UT207/208: OPERATING MANUAL
28
![Page 30: Model UT207/208 OPERATING MANUAL · 2014. 1. 17. · In this manual, a Warning identifies conditions and actions that pose hazards to the user, or may damage the Meter or the equipment](https://reader035.fdocuments.in/reader035/viewer/2022071611/614a9e9c12c9616cbc698892/html5/thumbnails/30.jpg)
Note
When duty cycle measurement has been completed, disconnect the connectionbetween the testing leads and the circuit under test, and remove the testing leadsaway from the input terminals of the Meter.
Model UT207/208: OPERATING MANUAL
29
![Page 31: Model UT207/208 OPERATING MANUAL · 2014. 1. 17. · In this manual, a Warning identifies conditions and actions that pose hazards to the user, or may damage the Meter or the equipment](https://reader035.fdocuments.in/reader035/viewer/2022071611/614a9e9c12c9616cbc698892/html5/thumbnails/31.jpg)
G. DC Current Measurement (see figure 9)
The measurement ranges of current are: 66A and 1000A .
To measure current, do the following:
Set the rotary switch to 66A or 1000A .Hold the Meter tight, don’t release. The Hallcomponents are very senstive not only to themagnet but also to heat and machines reactionforce. Any shock will cause the changing inreading in the short time.Press the lever to open the transformer jaw.Center the conductor within the transformer jaw,then release the Meter slowly until the trasnformerjaw is completely closed, Make sure theconductor to be tested is placed at the center ofthe transformer jaw, otherwise it will casuedeviation. The Meter can only measure one
1.2.
3.4.
Figure 9
Model UT207/208: OPERATING MANUAL
30
![Page 32: Model UT207/208 OPERATING MANUAL · 2014. 1. 17. · In this manual, a Warning identifies conditions and actions that pose hazards to the user, or may damage the Meter or the equipment](https://reader035.fdocuments.in/reader035/viewer/2022071611/614a9e9c12c9616cbc698892/html5/thumbnails/32.jpg)
Note
If the Meter does not display 00.00 when it is at 66A range, press ZERO tozeroing. After zeroing, it allows 10 digits bouncing reading.When the Meter is at 1000A , it displays 0 and it is not allowed to press ZEROto zeroing.When current measurement has been completed, disconnect the connectionbetween the conductor under test and the jaw, and remove the conductor awayfrom the transformer jaw of the Meter.
conductor at a time, to meausre more than one condutor at a time will cause deviation.
Model UT207/208: OPERATING MANUAL
31
![Page 33: Model UT207/208 OPERATING MANUAL · 2014. 1. 17. · In this manual, a Warning identifies conditions and actions that pose hazards to the user, or may damage the Meter or the equipment](https://reader035.fdocuments.in/reader035/viewer/2022071611/614a9e9c12c9616cbc698892/html5/thumbnails/33.jpg)
H. AC Current Measurement (see figure 10)
The measurement ranges of current are: 66.00A and 1000A .To measure AC current, do the following:
Set the rotary switch to 66A or 1000A .Hold the Meter tight, don’t release. The Hallcomponents are very senstive not only to themagnet but also to heat and machines reactionforce. Any shock will cause the changing inreading in the short time.Press the lever to open the transformer jaw.Center the conductor within the transformer jaw,then release the Meter slowly until the trasnformerjaw is completely closed, Make sure theconductor to be tested is placed at the center ofthe
1.2.
3.4.
Figure 10
Warning
Model UT207/208: OPERATING MANUAL
32
![Page 34: Model UT207/208 OPERATING MANUAL · 2014. 1. 17. · In this manual, a Warning identifies conditions and actions that pose hazards to the user, or may damage the Meter or the equipment](https://reader035.fdocuments.in/reader035/viewer/2022071611/614a9e9c12c9616cbc698892/html5/thumbnails/34.jpg)
transformer jaw, otherwise it will casue deviation. The Meter can only measureone conductor at a time, to meausre more than one condutor at a time will causedeviation.When the measuring current >1A, press Hz button to step through AC current,frequency and duty cycle measurement mode. But the frequency or duty cyclereadings obtained from this range is only for reference.Press SELECT to carry out surge current measurement.
5.
6.
To measure surge current Measurement, do the following:
Set the rotary switch to 1000A .Press SELECT when the Meter displays the minimum readings. The Meter thendisplays “-----’’ means it is ready to carry out surge current measurement.Turn on the electrical equipments at that time to measure the moment start upcurrent.Press and hold SELECT for one second to exit surge current measurement mode.When the Meter is at surge current measurement, it is locked to the highestmeasurement range.
1.2.
3.
4.5.
Model UT207/208: OPERATING MANUAL
33
![Page 35: Model UT207/208 OPERATING MANUAL · 2014. 1. 17. · In this manual, a Warning identifies conditions and actions that pose hazards to the user, or may damage the Meter or the equipment](https://reader035.fdocuments.in/reader035/viewer/2022071611/614a9e9c12c9616cbc698892/html5/thumbnails/35.jpg)
When current measurement has been completed, disconnect the connectionbetween the conductor under test and the jaw, and remove the conductor awayfrom the transformer jaw of the Meter.
Note
Model UT207/208: OPERATING MANUAL
34
![Page 36: Model UT207/208 OPERATING MANUAL · 2014. 1. 17. · In this manual, a Warning identifies conditions and actions that pose hazards to the user, or may damage the Meter or the equipment](https://reader035.fdocuments.in/reader035/viewer/2022071611/614a9e9c12c9616cbc698892/html5/thumbnails/36.jpg)
I. UT208 only: Temperature Measurement (see figure 11)
The temperature measurement range: -40 ~1000and -40 ~1832 .
To measure temperature measurement, connect theMeter as follows:
Insert the red temperature probe into the V Hzterminal and the black temperature probe intothe COM terminal.Set the rotary switch to . Press SELECT toswitch between and measurement mode.Place the temperature probe to the object beingmeasured.The measured value shows on the display.
1.
2.
3.
Figure 11
Model UT207/208: OPERATING MANUAL
35
![Page 37: Model UT207/208 OPERATING MANUAL · 2014. 1. 17. · In this manual, a Warning identifies conditions and actions that pose hazards to the user, or may damage the Meter or the equipment](https://reader035.fdocuments.in/reader035/viewer/2022071611/614a9e9c12c9616cbc698892/html5/thumbnails/37.jpg)
When the Meter is at range, it beeps to remind user to insert temperatureprobe.The Meter automatically displays the room temperature when the temperatureprobe 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 mustbe used.When the temperature measurement has been completed, disconnect theconnection between the temperature probe and the object under test, and removethe temperature probe away from the input terminals of the Meter.
Note
Model UT207/208: OPERATING MANUAL
36
![Page 38: Model UT207/208 OPERATING MANUAL · 2014. 1. 17. · In this manual, a Warning identifies conditions and actions that pose hazards to the user, or may damage the Meter or the equipment](https://reader035.fdocuments.in/reader035/viewer/2022071611/614a9e9c12c9616cbc698892/html5/thumbnails/38.jpg)
Sleep ModeTo preserve battery life, the Meter automatically turns off if you do not turn the rotaryswitch or press any button for around 15 minutes.
The Meter beeps 3 times in one minute before entering Sleep Mode and long beepone time just before entering Sleep Mode.
The Meter can be activated by turning the rotary switch or pressing the button basedon ‘‘The Effectiveness of Functional Buttons’’ on page 14
If the Meter is activated by pressing button, the Meter will keep the measurementvalue before entering Sleep Mode.
Press MAX/MIN, LIGHT or Hz to turn on the Meter can disable the Sleep Modefeature.
Model UT207/208: OPERATING MANUAL
37
![Page 39: Model UT207/208 OPERATING MANUAL · 2014. 1. 17. · In this manual, a Warning identifies conditions and actions that pose hazards to the user, or may damage the Meter or the equipment](https://reader035.fdocuments.in/reader035/viewer/2022071611/614a9e9c12c9616cbc698892/html5/thumbnails/39.jpg)
SpecificationsA. General Specifications:
Maximum Voltage between any Terminals and grounding: Refer to different rangeinput protection voltage.Display: 3 5/6 digits LCD display, Maximum display 6666.Polarity: AutoOverloading: Display OL or –OL.Battery Deficiency: Display .Sampling: 3 times per second.Measurement Deviation: The conductor being meaured is not placed in the centerof the jaw during AC/DC current measurement, it will cause extra 1% deviationbased 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, itmay cause unstable or wrong reading.Power: 1 x 9V battery (6LF22 1604A)
Model UT207/208: OPERATING MANUAL
38
![Page 40: Model UT207/208 OPERATING MANUAL · 2014. 1. 17. · In this manual, a Warning identifies conditions and actions that pose hazards to the user, or may damage the Meter or the equipment](https://reader035.fdocuments.in/reader035/viewer/2022071611/614a9e9c12c9616cbc698892/html5/thumbnails/40.jpg)
Battery Life: typically 150 hours (alkaline battery)Dimensions: 285.3mm x 105mm x 44.5mmWeight: Approximate 533g (battery included)
B. Environmental Requirements
The Meter is suitable for indoor use.Altitude: Operating: 2000m Storage: 10000mSafety/ Compliances: IEC61010-1; IEC61010-2-032. CAT.II 600V, CAT.III 300Vover 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.H) Storage: -20 ~+60 ( 80%R.H)
Model UT207/208: OPERATING MANUAL
39
![Page 41: Model UT207/208 OPERATING MANUAL · 2014. 1. 17. · In this manual, a Warning identifies conditions and actions that pose hazards to the user, or may damage the Meter or the equipment](https://reader035.fdocuments.in/reader035/viewer/2022071611/614a9e9c12c9616cbc698892/html5/thumbnails/41.jpg)
Accurate SpecificationsAccuracy: (a% reading + b digits), guarantee for 1 year.Operating temperature: 23 5Relative humidity: 80%R.HTemperature coefficient: 0.1x(specified accuracy)/1
A. DC Voltage
Range6.600V66.00V600.0V
Resolution1mV10mV100mV
Accuracy
(0.8%+1)
Overload protection
600V DC/AC
Remark: Input Impedance: 10MΩ
Model UT207/208: OPERATING MANUAL
40
![Page 42: Model UT207/208 OPERATING MANUAL · 2014. 1. 17. · In this manual, a Warning identifies conditions and actions that pose hazards to the user, or may damage the Meter or the equipment](https://reader035.fdocuments.in/reader035/viewer/2022071611/614a9e9c12c9616cbc698892/html5/thumbnails/42.jpg)
B. AC Voltage
Range6.600V66.00V600.0V
Resolution1mV10mV100mV
Accuracy
(1.2%+5)
Overload protection
600V DC/AC
Remarks:Input Impedance: 10MFrequency Response: 40Hz~400HzChange to AC:Combine AC and True RMS response method. Input sine wave to adjust. Nonsine wave must follow the below data to adjust:
Peak factor: 1.4~2.0, add 1.0% on the stated accuracyPeak factor: 2.0~2.5, add 2.5% on the stated accuracyPeak factor: 2.5~3.0, add 4.0% on the stated accuracy.
Model UT207/208: OPERATING MANUAL
41
![Page 43: Model UT207/208 OPERATING MANUAL · 2014. 1. 17. · In this manual, a Warning identifies conditions and actions that pose hazards to the user, or may damage the Meter or the equipment](https://reader035.fdocuments.in/reader035/viewer/2022071611/614a9e9c12c9616cbc698892/html5/thumbnails/43.jpg)
C. Resistance
Range660.0Ω6.600kΩ66.00kΩ660.0kΩ6.600MΩ66.00MΩ
Resolution0.1Ω1Ω10Ω100Ω1kΩ10kΩ
Accuracy (1.2%+2)
(1%+2)
(1.2%+2) (1.5%+2)
Overload protection
250VAC
D. Diode Test
Range Resolution
1mV
Accuracy0.5V~0.8V (Opencircuit voltageapprox. 3.0V)
Overload protection
250VAC
Model UT207/208: OPERATING MANUAL
42
![Page 44: Model UT207/208 OPERATING MANUAL · 2014. 1. 17. · In this manual, a Warning identifies conditions and actions that pose hazards to the user, or may damage the Meter or the equipment](https://reader035.fdocuments.in/reader035/viewer/2022071611/614a9e9c12c9616cbc698892/html5/thumbnails/44.jpg)
E. Continuity Test
Range Resolution
0.1
AccuracyAround 30Ω,thebuzzer beeps.(Open circuit voltageapprox. –1.2V)
Overload protection
250VAC
Remark:
The buzzer may or may not beeps when the resistance of a circuit under test isbetween 30Ω~100Ω.The buzzer does not beep when the resistance of a circuit under test is > 100Ω
Model UT207/208: OPERATING MANUAL
43
![Page 45: Model UT207/208 OPERATING MANUAL · 2014. 1. 17. · In this manual, a Warning identifies conditions and actions that pose hazards to the user, or may damage the Meter or the equipment](https://reader035.fdocuments.in/reader035/viewer/2022071611/614a9e9c12c9616cbc698892/html5/thumbnails/45.jpg)
F. Frequency
Range660.0Hz6.600kHz66.00kHz660.0kHz6.600MHz66.00MHz
Resolution0.1Hz0.001kHz0.01kHz0.1kHz0.001MHz0.01MHz
Accuracy
(0.1%+3)
Overload protection
250VAC
Remarks:Input Sensitivity (a) as follows:When a 10Hz: the Meter does not responseWhen 10Hz < a 100kHz: 300mV rmsWhen a >100kHz: 600mV rms
Model UT207/208: OPERATING MANUAL
44
![Page 46: Model UT207/208 OPERATING MANUAL · 2014. 1. 17. · In this manual, a Warning identifies conditions and actions that pose hazards to the user, or may damage the Meter or the equipment](https://reader035.fdocuments.in/reader035/viewer/2022071611/614a9e9c12c9616cbc698892/html5/thumbnails/46.jpg)
G. Duty Cycle
Range0.1%~99.9%
Resolution0.1%
AccuracyFor reference only
Overload protection250VAC
H. DC Current
Range66.00A1000A
Resolution0.01A1A
Accuracy (2%+40) (2%+8)
Overload protection250VAC
The operating temperature must be 0 ~ 40 when measuring current.
Warning
Model UT207/208: OPERATING MANUAL
45
![Page 47: Model UT207/208 OPERATING MANUAL · 2014. 1. 17. · In this manual, a Warning identifies conditions and actions that pose hazards to the user, or may damage the Meter or the equipment](https://reader035.fdocuments.in/reader035/viewer/2022071611/614a9e9c12c9616cbc698892/html5/thumbnails/47.jpg)
Remarks:If the reading is positive, the current direction is from bottom to up. See figure10, 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 magnetbut also to heat and machines reaction force. Any shock will cause the changingin reading in the short time. Follow the below procedure to measure current willbe more precise:
1. Turn off the current of tested conductor.2. Hold the Meter tight and press the lever to open the transformer jaw. Center the conductor within the transformer jaws, 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 cause +1.0% deviation based on the stated accuracy.3. Press ZERO button to display zero.4. Turn on the current of tested conductor reading the stable value of clamp meter.5. The obtained reading will be more precise.
Model UT207/208: OPERATING MANUAL
46
![Page 48: Model UT207/208 OPERATING MANUAL · 2014. 1. 17. · In this manual, a Warning identifies conditions and actions that pose hazards to the user, or may damage the Meter or the equipment](https://reader035.fdocuments.in/reader035/viewer/2022071611/614a9e9c12c9616cbc698892/html5/thumbnails/48.jpg)
I. AC Current
Range
66.00A1000A
Resolution
0.01A1A
Accuracy
(2%+40) (2%+8)
Overload protection
250VAC
FrequencyResponse50Hz ~ 60Hz
The operating temperature must be 0 ~40 when measuring current.
Remarks:
It may have unstable or wrong sensed readings, it will not affect measurementresult.Hold the Meter tight, do now release. The Hall components are very sensitivenot only to the magnet but also to heat and machines reaction force. Any shockwill cause the changing in reading in the short time.Change to AC:Combine AC and True RMS response method. Input sine wave to adjust.
Warning
Model UT207/208: OPERATING MANUAL
47
![Page 49: Model UT207/208 OPERATING MANUAL · 2014. 1. 17. · In this manual, a Warning identifies conditions and actions that pose hazards to the user, or may damage the Meter or the equipment](https://reader035.fdocuments.in/reader035/viewer/2022071611/614a9e9c12c9616cbc698892/html5/thumbnails/49.jpg)
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 accuracyPeak factor: 2.5~3.0, add 4.0% on the stated accuracy.
J. Temperature (UT208 only)
Range
40 ~1000
-40 ~1832
Resolution
1
1
Overload protection
250VAC
Accuracy-40 ~0 : (3%+4)0 ~400 : (1%+3)400 ~1000 :
(2%+10)
-40 ~32 : (3%+8)
32 ~752 : (1%+6)
752 ~1832 :(2%+18)
Model UT207/208: OPERATING MANUAL
48
![Page 50: Model UT207/208 OPERATING MANUAL · 2014. 1. 17. · In this manual, a Warning identifies conditions and actions that pose hazards to the user, or may damage the Meter or the equipment](https://reader035.fdocuments.in/reader035/viewer/2022071611/614a9e9c12c9616cbc698892/html5/thumbnails/50.jpg)
This section provides basic maintenance information including battery replacementinstruction.
Do not attempt to repair or service your Meter unless you are qualified to doso and have the relevant calibration, performance test, and service information.
To avoid electrical shock or damage to the Meter, do not get water inside thecase.
A. General ServicePeriodically wipe the case with a damp cloth and mild detergent. Do not useabrasives or solvents.To clean the terminals with cotton bar with detergent, as dirt or moisture in theterminals 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.
MAINTENANCE
Warning
Model UT207/208: OPERATING MANUAL
49
![Page 51: Model UT207/208 OPERATING MANUAL · 2014. 1. 17. · In this manual, a Warning identifies conditions and actions that pose hazards to the user, or may damage the Meter or the equipment](https://reader035.fdocuments.in/reader035/viewer/2022071611/614a9e9c12c9616cbc698892/html5/thumbnails/51.jpg)
B. Replacing the Battery (see figure 12)
Figure 12
To avoid false readings, which could leadto possible electric shock or personalinjury, replace the battery as soon as thebattery indicator “ ” appears.
Make sure the transformer jaw and thetets leads are disconected from the circuitbeing tested before opening the casebottom.
Warning
Model UT207/208: OPERATING MANUAL
50
![Page 52: Model UT207/208 OPERATING MANUAL · 2014. 1. 17. · In this manual, a Warning identifies conditions and actions that pose hazards to the user, or may damage the Meter or the equipment](https://reader035.fdocuments.in/reader035/viewer/2022071611/614a9e9c12c9616cbc698892/html5/thumbnails/52.jpg)
To replace the battery:
1. Turn the Meter off and remove all the connections from the input terminals2. 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
51
![Page 53: Model UT207/208 OPERATING MANUAL · 2014. 1. 17. · In this manual, a Warning identifies conditions and actions that pose hazards to the user, or may damage the Meter or the equipment](https://reader035.fdocuments.in/reader035/viewer/2022071611/614a9e9c12c9616cbc698892/html5/thumbnails/53.jpg)
* END *
This operating manual is subject to change without notice.
Model UT207/208: OPERATING MANUAL
52
![Page 54: Model UT207/208 OPERATING MANUAL · 2014. 1. 17. · In this manual, a Warning identifies conditions and actions that pose hazards to the user, or may damage the Meter or the equipment](https://reader035.fdocuments.in/reader035/viewer/2022071611/614a9e9c12c9616cbc698892/html5/thumbnails/54.jpg)
Copyright 2007 Uni-Trend Group Limited.All rights reserved.
Manufacturer:Uni-Trend Technology (Dongguan) LimitedDong Fang Da DaoBei Shan Dong Fang Industrial Development DistrictHu Men Town, Dongguan City Guang Dong ProvinceChinaPostal Code: 523 925
Headquarters:Uni-Trend Group LimitedRm901, 9/F, Nanyang Plaza57 Hung To Road Kwun Tong Kowloon, Hong KongTel: (852) 2950 9168Fax: (852) 2950 9303Email: [email protected]://www.uni-trend.com
Model UT207/208: OPERATING MANUAL
53