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Keysight U1190A Series Handheld Clamp Meter
Service Guide

41

2

Service and Maintenance

Troubleshooting

Returning the Instrument for Service

Replaceable Parts

Types of Service Available

Obtaining Repair Service (Worldwide)

This chapter will help you troubleshoot a failing instrument. It also describes how

to obtain repair services and lists the replaceable assemblies.

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Содержание U1190A Series

Страница 1: ...Keysight U1190A Series Handheld Clamp Meter Service Guide ...

Страница 2: ...hts 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 ...

Страница 3: ...AC Alternating current or voltage Application around and removal from HAZARDOUS LIVE conductors is permitted Both direct and alternating current 400 A MAX U1191A U1192A Maximumallowable current measurement is 400 A Earth ground terminal 600 A MAX U1193A U1194A Maximumallowable current measurement is 600 A Equipment protected throughout by double insulation or reinforced insulation CAT III 600 V Ca...

Страница 4: ...nt 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 batteries when the meter is not in use f...

Страница 5: ...the meter use only the specified replacement parts When using the probes keep your fingers behind the finger guards on the probes Connect the common test lead before you connect the live test lead When you disconnect the leads disconnect the live test lead first Remove the test leads from the meter before you open the battery cover Do not operate the meter with the battery cover or portions of the...

Страница 6: ...es are measurements on household appliances portable tools and similar equipment Measurement CAT III Measurements performed in the building installation 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 including stationary moto...

Страница 7: ...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 8: ...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 9: ...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 10: ...10 Keysight U1190A Series Service Guide THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK ...

Страница 11: ...rocedures Keysight Calibration Services 18 Closed case calibration 18 Calibration interval 19 Other recommendations for calibration 19 Recommended Test Equipment 20 Basic Operating Test 21 LCD backlight test 21 LED flashlight test 21 Display test 22 Calibration Process 23 Test Considerations 24 Functional Tests 25 Performance Verification Tests 31 Using the Front Panel for Adjustments 34 Adjustmen...

Страница 12: ...ide 2 Service and Maintenance Troubleshooting 42 Returning the Instrument for Service 43 Replaceable Parts 44 To order replaceable parts 44 Types of Service Available 45 Extended service contracts 45 Obtaining Repair Service Worldwide 46 ...

Страница 13: ...es Service Guide 13 List of Figures Figure 1 1 LCD display screen 22 Figure 1 2 Vsense test 26 Figure 1 3 Current performance verification test setup 30 Figure 1 4 Location of VR101 and VR102 and VR103 adjustment points 38 ...

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

Страница 15: ...2 Vsense test 26 Table 1 3 DC current offset test 27 Table 1 4 AC current balancing test 30 Table 1 5 Performance verification tests 31 Table 1 6 Performance verification tests continued 32 Table 1 7 Open case adjustment points 37 Table 1 8 Close case adjustment inputs 39 Table 2 1 Operating checklist 42 ...

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

Страница 17: ...d Test Equipment 20 Basic Operating Test 21 Calibration Process 23 Test Considerations 24 Functional Tests 25 Performance Verification Tests 31 Using the Front Panel for Adjustments 34 This chapter contains procedures for verifying the instrument performance as well as procedures for making adjustments calibration where necessary ...

Страница 18: ... no internal electro mechanical adjustment is required This instrument calculates correction factors based on the input reference signals you feed into it during the calibration process The new correction factors are stored in nonvolatile EEPROM memory until the next calibration adjustment is performed The contents of this nonvolatile EEPROM memory will not change even when the power is switched o...

Страница 19: ...ibration intervals beyond two years for any application Other recommendations for calibration Specifications are only guaranteed within the specified period from the last calibration Keysight recommends that readjustment should always be performed at whatever calibration interval you select This will ensure that the instrument remains within its specifications until the next calibration This calib...

Страница 20: ...cy specification DC current Fluke 5520A and Fluke 5500A COIL 20 of the instrument accuracy specification Resistance Fluke 5520A 20 of the instrument accuracy specification AC voltage Fluke 5520A 20 of the instrument accuracy specification AC current Fluke 5520A and Fluke 5500A COIL 20 of the instrument accuracy specification Frequency Fluke 5520A 20 of the instrument accuracy specification Capacit...

Страница 21: ...ight test Display test LCD backlight test Power on the clamp meter and press on the U1192A U1193A U1194A models or on the U1191A model Check that the LCD backlight is turned on Press the key again to turn the LCD backlight off LED flashlight test For U1192A U1193A and U1194A models only Press and hold the key for more than 1 second Check that the LED flashlight is turned on Press and hold the key ...

Страница 22: ... annunciators are displayed in the LCD Compare the display with the example shown in Figure 1 1 All annunciators are displayed in the LCD for 10 seconds To exit this mode please wait 10 seconds for the clamp meter to return to normal operation Alternatively you may cycle the clamp meter s power The clamp meter will return to normal operation when it is turned on again Figure 1 1 LCD display screen...

Страница 23: ...onality of the clamp meter see Functional Tests on page 25 3 Perform the verification tests to characterize the clamp meter see Performance Verification Tests on page 31 4 Prior to performing the adjustments see Adjustment considerations on page 34 5 Perform the adjustment procedure see Adjustment procedure on page 35 6 Ensure that the clamp meter is not in the adjustment mode and is turned off se...

Страница 24: ...ambient temperature can be controlled Ensure that the calibration ambient temperature is stable and is between 18 C and 28 C Ideally the calibration should be performed at 23 C 1 C Ensure that the ambient relative humidity is less than 80 The instrument should be in the laboratory environment for at least 1 hour prior Allow a warm up period of 3 minutes Use shielded twisted pair PTFE insulated cab...

Страница 25: ...nly Use the following procedure to verify that Vsense is functional NOTE Keep the clamp meter away from electrical noise sources that include fluorescent lights dimmable lights motors and so on during the tests These sources can trigger the Vsense alert and invalidate the test It may be necessary to slightly adjust the clamp meter s position for maximum signal strength in order to get the clamp me...

Страница 26: ...and in contact with the banana plug s Hi terminal 4 Adjustment or repair is required if the clamp meter fails any of the Vsense functional tests See Close case adjustment on page 39 Dual banana plug Fluke 5520A Positive output terminal Calibrator NOTE Ensure that the Fluke 5520A calibrator output is disabled when connecting the dual banana plug Table 1 2 Vsense test Step Test function Range Fluke ...

Страница 27: ...y switch of the clamp meter to the DC current function 3 Verify that the measured readings fall within the specified error limits from the reference value as stated in Table 1 3 Repair is required if the clamp meter fails this test See Open case adjustment U1194A only on page 37 Table 1 3 DC current offset test Step Test function Range Reference input value Error limit a 1 DC current 40 A 0 00 A 0...

Страница 28: ... the Fluke 5520A calibrator output to the values shown in Table 1 4 on page 30 and enable the Fluke 5520A calibrator output 3 Check that the position of the conductor relative to the clamp meter is in position 0 as shown in the figure below 4 Record the current reading at position 0 5 Slowly move the clamp meter so that the conductor is in position 1 as shown in the figure on the next page Ensure ...

Страница 29: ...conductor position is close to the bottom of the jaw 8 Record the current reading at position 2 9 Calculate the difference between the readings at position 0 and position 1 and the difference between the readings at position 0 and position 2 Check if the difference falls within the specified error limits in Table 1 4 Adjustment is required if the clamp meter fails this test Conductor at position 1...

Страница 30: ...tion test setup Fluke 5520A Calibrator Fluke 5500A COIL 50 turn current coil AC or DC current 3 A AC or DC current 3 A Conductor Table 1 4 AC current balancing test Step Test function Fluke 5520A output used with Fluke 5500A COIL Reference input value Error limit 1 AC current 2 A 60 Hz 100 0 A 60 Hz 1 0 A ...

Страница 31: ...ry calibration interval If the clamp meter fails the performance verification tests adjustment or repair is required NOTE Ensure that you have read the Test Considerations on page 24 before running the performance verification tests Table 1 5 Performance verification tests Step Test function Range Fluke 5520 output Reference values Error from nominal 1 year U1191A U1192A U1193A U1194A 1 ACA Turn t...

Страница 32: ... the rotary switch to the position 60 V 60 V 0 33 V 0 33 V 0 33 V 600 V 600 V 3 3 V 3 3 V 3 3 V 3 3 V 6 Resistance Turn the rotary switch to the position 600 Ω a 600 Ω 5 3 Ω 5 3 Ω 5 3 Ω 5 3 Ω 6 kΩ a 6 kΩ 0 051 kΩ 0 051 kΩ 0 051 kΩ 0 051 kΩ 60 kΩ 60 kΩ 0 51 kΩ 0 51 kΩ 0 51 kΩ a The accuracy is specified after the Null function is used to subtract the test lead resistance and thermal effect by short...

Страница 33: ...n the readings of the calibrator and clamp meter Placing the clamp meter close to the output terminal of the calibrator will help reduce this deviation Keep the thermocouple test lead as close to the clamp meter as possible Do not touch the thermocouple test lead after connecting it to the calibrator Allow the connection to stabilize for at least another 15 minutes before performing the measuremen...

Страница 34: ... low battery indicator does not appear 3 If the low battery indicator appears replace the batteries as soon as possible to avoid false readings 4 Consider the thermal effects as you are connecting the test leads to the calibrator and handheld clamp meter Keysight recommends you to wait for 1 minute before you begin the calibration after connecting the test leads 5 Before proceeding with the ambien...

Страница 35: ...ference Value column of Table 1 8 Determine if the signal is within the valid reference input range 4 Press the key to save the calibration reference value when a stable reading is achieved on the display If the adjustment fails Err will be shown on the display Press the key again to return to the current calibration item NOTE Review the Test Considerations and Adjustment considerations before beg...

Страница 36: ...ording to the Test Function column shown in Table 1 8 Repeat step 2 to step 4 for each adjustment point shown in the adjustment table 6 Verify the adjustments using the Performance Verification Tests on page 31 NOTE While in the adjustment mode turn the rotary switch to the OFF position to exit the adjustment mode ...

Страница 37: ...atteries connected in series Set the power supply output to 3 V DC and the over current limitation to 0 1 A Ensure that the polarity of the connection is correct The battery pin marked with is the positive terminal Table 1 7 Open case adjustment points Test function Step Reference value Limit Adjustment point DC current offset test a 40 A 0 00 A 0 10 A VR101 VR102 a Adjust the VR101 and VR102 adju...

Страница 38: ...1 Calibration Procedures 38 Keysight U1190A Series Service Guide Figure 1 4 Location of VR101 and VR102 and VR103 adjustment points VR101 VR103 VR102 ...

Страница 39: ...lue DCA 50 00 A a 0 75 to 1 25 Reference value 240 0 A a 0 75 to 1 25 Reference value a Move the clamp meter away from the signal and press the key to zero the offset ACµA 50 00 µA 60 Hz 0 9 to 1 1 Reference value 500 0 µA 60 Hz 0 9 to 1 1 Reference value DCµA 50 00 µA 0 9 to 1 1 Reference value 500 0 µA 0 9 to 1 1 Reference value Resistance 500 0 Ω b 0 9 to 1 1 Reference value 5 000 kΩ b 0 9 to 1...

Страница 40: ...ce value 45 119 mV 0 9 to 1 1 Reference value 0 C c 0 9 to 1 1 Reference value c Ensure the clamp meter is turned on and stabilized for at least 1 hour with the thermocouple connected between the clamp meter and the calibrator output terminal Vsense Hi SE 9 V 60 Hz N A Vsense Lo SE 27 V 60 Hz N A Table 1 8 Close case adjustment inputs continued Test function Reference value U1191A U1192A U1193A U1...

Страница 41: ...oubleshooting 42 Returning the Instrument for Service 43 Replaceable Parts 44 Types of Service Available 45 Obtaining Repair Service Worldwide 46 This chapter will help you troubleshoot a failing instrument It also describes how to obtain repair services and lists the replaceable assemblies ...

Страница 42: ...ting checklist Malfunction Identification No display when powered ON using the rotary switch Verify the batteries health and replace batteries as necessary Auto powered OFF after powered ON for a while Verify the auto power off APO function is enabled in the clamp meter s Setup mode No backlight when the key is pressed Verify that the backlight function is enabled in the clamp meter s Setup mode N...

Страница 43: ...er Instrument model number Instrument serial number Description of the service required or failure indications 2 Remove all accessories from the instrument Do not include accessories unless they are associated with the failure symptoms 3 Place the instrument in its original container with appropriate packaging material for shipping If the original shipping container is not available place your uni...

Страница 44: ...s include a brief description of each part with the applicable Keysight part number To order replaceable parts You can order replaceable parts from Keysight using the Keysight part number Note that not all parts listed are available as field replaceable parts To order replaceable parts from Keysight do the following 1 Contact your nearest Keysight Sales Office or Service Center 2 Identify the part...

Страница 45: ...r or replace it under the terms of your warranty Extended service contracts Many Keysight products are available with optional service contracts that extend the covered period after the standard warranty expires If you have such a service contract and your instrument fails during the covered period Keysight Technologies will repair or replace it in accordance with the contract ...

Страница 46: ... technical support information you can contact Keysight Technologies at one of the following telephone numbers In the United States 800 829 4444 In Europe 31 20 547 2111 In Japan 0120 421 345 Or use our web link for information on contacting Keysight worldwide www keysight com find assist Or contact your Keysight Technologies Representative Before shipping your instrument ask the Keysight Technolo...

Страница 47: ...ion is subject to change without notice Always refer to the Keysight website for the latest revision Keysight Technologies 2012 2017 Edition 7 June 1 2017 Printed in Malaysia U1191 90014 U1191 90014 www keysight com ...

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