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Making Measurements

Keysight U1190A Series User’s Guide

Testing Diodes

Set up your clamp meter to test diodes as shown in

Figure 2-15

. Probe the test

points, and read the display.

Figure 2-13

Diode display

CAUTION

To avoid possible damage to your clamp meter or to the equipment under

test, disconnect the circuit power and discharge all high-voltage capacitors

before testing diodes.

NOTE

– Use the diode test to check diodes, transistors, silicon controlled rectifiers

(SCRs), and other semiconductor devices. A good diode allows current to

flow in one direction only.

– This test sends a current through a semiconductor junction, and then

measures the junction’s voltage drop.

– Connect the red test lead to the positive terminal (anode) of the diode and

the black test lead to the negative terminal (cathode). The cathode of a diode

is indicated with a band.

NOTE

Your clamp meter can display the forward-bias of a diode up to approximately

1.8 V. The forward-bias of a typical diode is within the range of 0.3 V to 0.8 V;

however, the reading can vary depending on the resistance of other pathways

between the probe tips.

Содержание U1190A Series

Страница 1: ...Keysight U1190A Series Handheld Clamp Meters User s Guide ...

Страница 2: ...ts customarily provided to the public to use modify reproduce release perform display or disclose commercial computer software or commercial computer software documentation No additional government requirements beyond those set forth in the EULA shall apply except to the extent that those terms rights or licenses are explicitly required from all providers of commercial computer software pursuant t...

Страница 3: ...ternating current AC Application around and removal from HAZARDOUS LIVE conductors is permitted Both direct and alternating current U1191A U1192A Maximum allowable current measurement is 400 A Earth ground terminal U1193A U1194A Maximum allowable current measurement is 600 A Equipment protected throughout by double insulation or reinforced insulation Category III 600 V overvoltage protection Cauti...

Страница 4: ...er measure voltage when current measurement is selected Always use the specified battery type The power for the meter is supplied with two standard AAA 1 5 V batteries Observe the correct polarity markings before you insert the batteries to ensure proper insertion of the batteries in the meter You are advised to use low leakage batteries when changing to new batteries Please remember to remove the...

Страница 5: ...the circuit Remember to place the meter in series with the circuit When measuring temperature keep the thermocouple probe as close to the meter as possible and avoid contact with surfaces above 60 V DC 30 V AC RMS or 42 4 V peak Such voltages pose a shock hazard When servicing the meter use only the specified replacement parts When using the probes keep your fingers behind the finger guards on the...

Страница 6: ...Otherwise the protection provided by the meter may be impaired Individual protective equipment must be used if hazardous live parts in the installation are accessible where measurement is to be carried out The tactile indicator or barrier indicates the limit of safe access of the handheld part ...

Страница 7: ... installation Examples are measurements on household appliances portable tools and similar equipment Measurement CAT III are measurements performed in building installations Examples are measurements on distribution boards circuit breakers wiring including cables bus bars junction boxes switches socket outlets in the fixed installation and equipment for industrial use and some other equipment incl...

Страница 8: ...erature up to 30 C decreasing linearly to 50 RH at 50 C Storage temperature 40 C to 60 C 40 to 80 RH without batteries Altitude Up to 2000 meters Pollution degree Pollution degree 2 NOTE The U1190A Series Handheld Clamp Meter complies with the following safety and EMC requirements IEC 61010 1 2001 EN 61010 1 2001 IEC 61010 2 032 2002 EN 61010 2 032 2002 CAN CSA C22 2 No 61010 1 04 CAN CSA C22 2 No...

Страница 9: ...the Canadian ICES 001 Cet appareil ISM est conforme a la norme NMB 001 du Canada This instrument complies with the WEEE Directive 2002 96 EC marking requirement This affixed product label indicates that you must not discard this electrical or electronic product in domestic household waste The CSA mark is a registered trademark of the Canadian Standards Association This symbol indicates the time pe...

Страница 10: ...Monitoring and Control Instrument product The affixed product label is as shown below Do not dispose in domestic household waste To return this unwanted instrument contact your nearest Keysight Service Center or visit http about keysight com en companyinfo environment takeback shtml for more information Sales and Technical Support To contact Keysight for sales and technical support refer to the su...

Страница 11: ...pport 10 1 Introduction About This Manual 18 Documentation map 18 Safety notes 18 Preparing Your Clamp Meter 19 Checking the shipment 19 Installing the batteries 19 Turning on your clamp meter 22 Automatic Power Off APO 23 Enabling the backlight 23 Enabling the flashlight 24 Alerts and warnings during measurement 25 Power on options 26 Your Clamp Meter in Brief 27 Dimensions 27 Overview 29 Rotary ...

Страница 12: ...sting for Continuity 50 Testing Diodes 53 Measuring Capacitance 57 Measuring Temperature 59 Measuring AC or DC Current up to µA 62 Measuring Frequency 64 3 Clamp Meter Features Detecting AC Voltage Presence Vsense 68 Making Relative Measurements Null 71 Capturing Maximum and Minimum Values Max Min 72 Freezing the Display Hold 74 4 Characteristics and Specifications ...

Страница 13: ...igure 2 11 Closed continuity display 50 Figure 2 12 Testing for continuity 52 Figure 2 13 Diode display 53 Figure 2 14 Open diode display 54 Figure 2 15 Testing forward bias diode 55 Figure 2 16 Testing reverse bias diode 56 Figure 2 17 Capacitance display 57 Figure 2 18 Measuring capacitance 58 Figure 2 19 Temperature display 59 Figure 2 20 Measuring the surface temperature 61 Figure 2 21 DC curr...

Страница 14: ...14 Keysight U1190A Series User s Guide THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK ...

Страница 15: ... Battery level indicator 21 Table 1 2 Power on options 26 Table 1 3 Rotary switch functions 32 Table 1 4 Keypad functions 33 Table 1 5 General annunciators 34 Table 1 6 Measurement units display 35 Table 1 7 Terminal connections for different measuring functions 36 ...

Страница 16: ...16 Keysight U1190A Series User s Guide THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK ...

Страница 17: ...Introduction About This Manual 18 Preparing Your Clamp Meter 19 Your Clamp Meter in Brief 27 Cleaning Your Clamp Meter 38 This chapter teaches you how to set up your clamp meter for the first time An introduction to all the features of the clamp meter is also given ...

Страница 18: ...eysight com find hhTechLib Check the manual revision on the first page of each manual User s Guide This manual Quick Start Guide Printed copy for outdoor use included with shipment Service Guide Free download at the Keysight website Safety notes Safety notes are used throughout this manual see the Safety Information section for format examples Familiarize yourself with each of the notes and its me...

Страница 19: ...d your ordered options are included in the shipment according to the standard shipped items list found in the printed copy of the U1190A Series Quick Start Guide 3 For any question or problems refer to the Keysight contact numbers on the back of this manual Installing the batteries Your clamp meter is powered by two 1 5 V AAA alkaline batteries included with the shipment When you receive your clam...

Страница 20: ...battery polarity The terminal ends of each battery are indicated inside the battery compartment 3 Close the battery cover Place the battery cover back in its original position and tighten the screw Figure 1 1 Installing the batteries The battery level indicator in the lower left hand corner of the display indicates the relative condition of the batteries Table 1 1 describes the various battery lev...

Страница 21: ...lly Almost empty a WARNING To avoid false readings which could lead to possible electric shock or personal injury replace the batteries as soon as the low battery indicator appears Do not discharge the batteries by shorting the batteries or reversing the polarity of the batteries CAUTION To avoid instruments being damage from battery leakage Always remove dead batteries immediately Always remove t...

Страница 22: ...r s Guide Turning on your clamp meter To power ON your clamp meter turn the rotary switch from the OFF position to any other position Figure 1 2 Powering on the clamp meter To power OFF your clamp meter turn the rotary switch to the OFF position ...

Страница 23: ...ld while powering on the clamp meter to enter the Setup menu 2 The automatic power off A timer period is the first Setup item shown 3 Press to make changes to the A value Press or to change the timer period from A 01 to A 99 minutes or to completely disable the automatic power off function AoFF 4 Press to save the changes or press to discard the changes and proceed to the next Setup item 5 Cycle t...

Страница 24: ...m 5 Cycle the clamp meter s power to exit the Setup menu Enabling the flashlight This feature is applicable for U1192A U1193A and U1194A models only If you are using the clamp meter in dark places press and hold for more than 1 second to activate the LED flashlight for greater visibility on your test points This is not applicable to the U1191A model Press for more than 1 second to deactivate the L...

Страница 25: ...p item 5 Cycle the clamp meter s power to exit the Setup menu Alerts and warnings during measurement Voltage alert Your clamp meter provides a voltage alert for voltage measurements The clamp meter starts beeping periodically once the measured voltage exceeds the alert value regardless of polarity set Hazardous voltage indication The clamp meter will also display the hazardous voltage symbol as an...

Страница 26: ...conds for the clamp meter to return to normal operation Checks the firmware version The clamp meter s firmware version will be shown on the primary display Cycle the clamp meter s power to exit this mode Enters the clamp meter s Setup menu See the following topics for more information on each respective Setup menu item Automatic Power Off APO on page 23 Enabling the backlight on page 23 Enabling t...

Страница 27: ...Introduction 1 Keysight U1190A Series User s Guide 27 Your Clamp Meter in Brief Dimensions Front view 77 14 mm 77 14 mm ...

Страница 28: ...1 Introduction 28 Keysight U1190A Series User s Guide Rear view 225 mm 238 mm ...

Страница 29: ...s User s Guide 29 Overview Front panel The front panel parts of your clamp meter are described in this section Figure 1 3 Front panel Clamp jaw Hold MaxMin button Rotary switch Display screen Function buttons Input terminals Jaw markings ...

Страница 30: ...1 Introduction 30 Keysight U1190A Series User s Guide Rear panel The rear panel parts of your clamp meter are described in this section Figure 1 4 Rear panel Flashlight Hand guard Handle Battery cover ...

Страница 31: ... respective Learn more pages for more information on each function NOTE Some rotary switch positions have a shifted function printed in orange Press to switch between the shifted and primary function WARNING Remove the test leads from the measuring source or target before changing the rotary switch position NOTE A list of some of the abbreviations used in Table 1 3 is given below AC A AC current m...

Страница 32: ...arn more on Off 4 4 4 4 page 22 AC A 4 4 4 4 page 40 DC A 4 Frequency current path 4 4 4 page 64 AC V 4 4 4 4 page 44 Frequency voltage path 4 4 4 page 64 DC V 4 4 4 4 page 46 Resistance 4 4 4 4 page 48 Continuity 4 4 4 4 page 50 Diode 4 4 4 4 page 53 Capacitance 4 4 4 page 57 Non contact voltage detector 4 4 4 page 68 Temperature 4 page 59 DC μA 4 page 62 AC μA 4 ...

Страница 33: ... for more information on each function Table 1 4 Keypad functions Legend Function when pressed for Learn more on Less than 1 second More than 1 second Freezes the present reading in the display Records the maximum minimum or average value page 74 Switches between the primary and shifted icons printed in orange functions page 31 Turns the LCD backlight on or off Turns the LED flashlight on or off p...

Страница 34: ...gend Description Learn more on Hazardous voltage sign for measuring voltage 30 V or overload page 25 Hold enabled page 74 Auto ranging enabled Maximum reading shown on primary display page 72 Minimum reading shown on primary display Averaged reading shown on primary display Present reading shown on primary display Relative Null enabled page 71 Diode test selected page 53 Audible continuity test se...

Страница 35: ... Table 1 5 General annunciators continued Legend Description Learn more on Table 1 6 Measurement units display Sign Notation Description M Mega 1E 06 1000000 k kilo 1E 03 1000 n nano 1E 09 0 000000001 μ micro 1E 06 0 000001 m milli 1E 03 0 001 mV V Voltage units for voltage measurement μA mA A Ampere units for current measurement nF μF mF Farad units for capacitance measurement Ω kΩ MΩ Ohm units f...

Страница 36: ...correct input terminals for the selected measurement function before starting any measurement CAUTION To avoid damaging this device do not exceed the rated input limit Table 1 7 Terminal connections for different measuring functions Legend Functions U1194A U1193A U1192A U1191A Input terminals Overload protection AC V 4 4 4 4 600 Vrms Frequency voltage path 4 4 4 DC V 4 4 4 4 Diode 4 4 4 4 600 Vrms...

Страница 37: ...ries User s Guide 37 AC A 4 4 4 4 600 Arms DC A 4 Frequency current path 4 4 4 Table 1 7 Terminal connections for different measuring functions continued Legend Functions U1194A U1193A U1192A U1191A Input terminals Overload protection ...

Страница 38: ...ter off and remove the test leads 2 Turn the clamp meter over and shake out any dirt that may have accumulated in the terminals Wipe the case with a damp cloth and mild detergent do not use abrasives or solvents Wipe the contacts in each terminal with a clean swab dipped in alcohol WARNING To avoid electrical shock or damage to the clamp meter ensure that the insides of the casing stay dry at all ...

Страница 39: ...rrent 40 Measuring AC Voltage 44 Measuring DC Voltage 46 Measuring Resistance 48 Testing for Continuity 50 Testing Diodes 53 Measuring Capacitance 57 Measuring Temperature 59 Measuring AC or DC Current up to µA 62 Measuring Frequency 64 This chapter describes how to take measurements with your clamp meter ...

Страница 40: ... one conductor at a time Measuring multiple conductors may cause inaccuracy in measurement readings due to the vector sum of currents flowing in the conductors Use the wire separator to separate individual wires or cables from a mesh of wires or cables See Using the wire separator and hook on page 42 for more information Current flow Current flow For best accuracy during current measurements align...

Страница 41: ...Making Measurements 2 Keysight U1190A Series User s Guide 41 Figure 2 1 AC current display Figure 2 2 Measuring AC current 3 1 2 4 5 Conductor ...

Страница 42: ...ed to separate individual wires or cables for measurements from a mesh of wires or cables Use the wire separator and hook to avoid touching live wires or cables without the necessary insulation protection or powering off the voltage or current source Follow the instructions below to use the wire separator and hook feature Figure 2 3 Wire separator and hook design Wire separator tip Hook ...

Страница 43: ...htly to reveal the wire separator tip Use the wire separator tip to locate the desired wire or cable 2 Separate the wire or cable by hooking it in the clamp jaw securely and pulling it back 3 Close the clamp jaw to secure the wire or cable and read the measurement Mesh of wires or cables ...

Страница 44: ...eading but it will not damage the clamp meter NOTE For U1193A and U1194A models AC voltage measurements measured with this clamp meter are returned as true RMS root mean square readings These readings are accurate for sinusoidal waves For non sinusoidal waveforms please refer to the Chapter 4 Characteristics and Specifications NOTE Press to measure the frequency of the AC voltage source U1192A U11...

Страница 45: ...Making Measurements 2 Keysight U1190A Series User s Guide 45 Figure 2 5 Measuring AC voltage 2 4 AC Voltage source 1 3 ...

Страница 46: ...up your clamp meter to measure DC voltage as shown in Figure 2 7 Probe the test points and read the display Figure 2 6 DC voltage display NOTE This clamp meter displays DC voltage values as well as their polarity Negative DC voltages will return a negative sign on the left of the display ...

Страница 47: ...Making Measurements 2 Keysight U1190A Series User s Guide 47 Figure 2 7 Measuring DC voltage DC 3 Voltage source 1 2 ...

Страница 48: ...der test Because this current flows through all possible paths between the leads the resistance reading represents the total resistance of all paths between the leads Resistance is measured in ohms Ω NOTE Keep the following in mind when measuring resistance The test leads can add 0 1 Ω to 0 2 Ω of error to resistance measurements To test the leads touch the probe tips together and read the resista...

Страница 49: ...Making Measurements 2 Keysight U1190A Series User s Guide 49 Figure 2 9 Measuring resistance 3 Resistor 1 2 ...

Страница 50: ...y display Figure 2 11 Closed continuity display CAUTION To avoid possible damage to your clamp meter or to the equipment under test disconnect the circuit power and discharge all high voltage capacitors before testing for continuity NOTE Continuity is the presence of a complete path for current flow The continuity test features a beeper that sounds and a backlight that flashes as long as a circuit...

Страница 51: ...continuity visual alert Press or to enable or to disable the continuity visual alert the backlight turns on or off 4 Press to save the changes or press to discard the changes and proceed to the next Setup item 5 Cycle the clamp meter s power to exit the Setup menu NOTE You can set the beeper to sound and the backlight to flash as a continuity indication whether the circuit under test is less than ...

Страница 52: ...2 Making Measurements 52 Keysight U1190A Series User s Guide Figure 2 12 Testing for continuity 4 1 3 CLOSED OPEN 2 ...

Страница 53: ...olled rectifiers SCRs and other semiconductor devices A good diode allows current to flow in one direction only This test sends a current through a semiconductor junction and then measures the junction s voltage drop Connect the red test lead to the positive terminal anode of the diode and the black test lead to the negative terminal cathode The cathode of a diode is indicated with a band NOTE You...

Страница 54: ...splays in reverse bias mode A diode is considered shorted if the clamp meter displays approximately 0 V in both forward and reverse bias modes and the clamp meter beeps continuously A diode is considered open if the clamp meter displays in both forward and reverse bias modes Figure 2 14 Open diode display NOTE If the beeper is enabled during diode test the clamp meter will beep briefly for a norma...

Страница 55: ...Making Measurements 2 Keysight U1190A Series User s Guide 55 Figure 2 15 Testing forward bias diode 3 Forward bias diode 1 2 ...

Страница 56: ...2 Making Measurements 56 Keysight U1190A Series User s Guide Figure 2 16 Testing reverse bias diode 3 Reverse bias diode 1 2 ...

Страница 57: ...disconnect circuit power and discharge all high voltage capacitors before measuring capacitance Use the DC voltage function to confirm that the capacitor is fully discharged NOTE The clamp meter measures capacitance by charging the capacitor with a known current for a known period of time measuring the resulting voltage and then calculating the capacitance NOTE For measuring capacitance values gre...

Страница 58: ...2 Making Measurements 58 Keysight U1190A Series User s Guide Figure 2 18 Measuring capacitance 2 4 Capacitor 1 3 ...

Страница 59: ... display WARNING Do not connect the thermocouple to electrically live circuits Doing so will potentially cause fire or electric shock CAUTION Do not bend the thermocouple leads at sharp angles Repeated bending over a period of time can break the leads NOTE The clamp meter uses the type K thermocouple probe included in the standard shipped items of a U1194A model for measuring temperature Shorting ...

Страница 60: ...suring temperatures from 40 C to 204 C 399 F in PTFE compatible environments Do not immerse this thermocouple probe in any liquid For best results use a thermocouple probe designed for each specific application an immersion probe for liquid or gel and an air probe for air measurement Observe the following measurement techniques Clean the surface to be measured and ensure that the probe is securely...

Страница 61: ...Making Measurements 2 Keysight U1190A Series User s Guide 61 Figure 2 20 Measuring the surface temperature 2 4 1 3 K type thermocouple probe Heat source ...

Страница 62: ...k or personal injury CAUTION To avoid possible damage to the clamp meter or to the equipment under test use the proper terminals function and range for your measurement Use the clamp jaw for currents above 600 µA To measure current you must open the circuit under test then place the clamp meter in series with the circuit Never place the probes across in parallel with any circuit or component when ...

Страница 63: ...Making Measurements 2 Keysight U1190A Series User s Guide 63 Figure 2 22 Measuring AC DC current up to µA AC 2 4 1 Voltage source DC Voltage source LOAD 3 LOAD ...

Страница 64: ...etect the presence of harmonic currents in neutral conductors and determines whether these neutral currents are the result of unbalanced phases or non linear loads Frequency is the number of cycles a signal completes each second Frequency is defined as 1 Period Period is defined as the time between the middle threshold crossings of two consecutive like polarity edges as shown in the figure below T...

Страница 65: ...Making Measurements 2 Keysight U1190A Series User s Guide 65 Figure 2 23 Frequency display Figure 2 24 Measuring frequency 3 1 2 4 Conductor ...

Страница 66: ...2 Making Measurements 66 Keysight U1190A Series User s Guide THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK ...

Страница 67: ...e 67 3 Clamp Meter Features Detecting AC Voltage Presence Vsense 68 Making Relative Measurements Null 71 Capturing Maximum and Minimum Values Max Min 72 Freezing the Display Hold 74 The chapter describes the additional features available in your clamp meter ...

Страница 68: ...ould still be present even if there is no Vsense alert indication Do not rely on the Vsense detector with shielded wire Never touch live voltage or conductor without the necessary insulation protection or power off the voltage source The Vsense detector may be affected by differences in socket design insulation thickness and insulation type CAUTION You are advised to measure voltage by using test ...

Страница 69: ...sitivity display NOTE Place the top of the clamp meter close to a conductor when sensing for AC voltages as low as 24 V in the Hi SE setting The low sensitivity setting can be used on flush mounted wall sockets or outlets and various power strips or cords The high sensitivity setting allows for AC voltage sensing on other styles of recessed power connectors or sockets where the actual AC voltage i...

Страница 70: ...3 Clamp Meter Features 70 Keysight U1190A Series User s Guide Figure 3 3 Detecting voltage presence Voltage source ...

Страница 71: ... enabled is stored as the reference value Figure 3 4 Null display 2 To disable the Null function press again For any measurement function you can directly measure and store the null value by pressing with the test leads open nulls the test lead capacitance shorted nulls the test lead resistance or across a desired null value circuit NOTE In resistance measurement the clamp meter will read a non ze...

Страница 72: ...s display you can view the following statistical data for any set of readings Max highest reading since the Max Min function was enabled Min lowest reading since the Max Min function was enabled Avg average or mean of all readings since the Max Min function was enabled MaxMinAvg present reading actual input signal value 1 Press and hold for more than 1 second to enable the Max Min operation 2 Pres...

Страница 73: ...ttended or recording readings while equipment operation keeps you from observing the clamp meter display The true average value displayed is the arithmetic mean of all readings taken since the start of recording The average reading is useful for smoothing out unstable inputs calculating power consumption or estimating the percentage of time a circuit is active ...

Страница 74: ...3 Clamp Meter Features 74 Keysight U1190A Series User s Guide Freezing the Display Hold To freeze the display for any function press the key Figure 3 6 Hold display Press again to disable this function ...

Страница 75: ...amp Meters User s Guide 75 4 Characteristics and Specifications For the characteristics and specifications of the U1190A Series Handheld Clamp Meters refer to the datasheet at http literature cdn keysight com litweb pdf 5990 8646EN pdf ...

Страница 76: ...4 Characteristics and Specifications 76 Keysight U1190A Series User s Guide THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK ...

Страница 77: ...ion is subject to change without notice Always refer to the Keysight website for the latest revision Keysight Technologies 2011 2017 Edition 8 June 1 2017 Printed in Malaysia U1191 90003 U1191 90003 www keysight com ...

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