772/773 Milliamp Process Clamp Meter Calibration Manual October 2009 © 2009 Fluke Corporation. All rights reserved. Printed in USA. Specifications are subject to change without notice. All product names are trademarks of their respective companies.
LIMITED WARRANTY AND LIMITATION OF LIABILITY This Fluke product will be free from defects in material and workmanship for 3 years (one year for cable and clamp) from the date of purchase. Parts, product repairs, and services are warranted for 90 days.
Table of Contents Title Introduction........................................................................................................ How to Contact Fluke ........................................................................................ Safety Information ............................................................................................. Symbols ............................................................................................................. Specifications...............
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List of Tables Table 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. Title Symbols.................................................................................................................. Required Equipment............................................................................................... Calibration Functions ............................................................................................. Calibration Adjustments.........................................................................
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List of Figures Figure Title 1. 2. 3. 4. 5. Tactile Barrier ........................................................................................................ Battery Replacement .............................................................................................. Display Test ........................................................................................................... Accessing the Calibration Button...........................................................................
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Introduction XW Warning To prevent electrical shock or personal injury, do not do the calibration verification tests or calibration procedures in this manual unless you are qualified. The data in this manual is for qualified personnel only. This manual tells you about verification and adjustment procedures for the 772/773 Milliamp Process Clamp Meter (referred to in this manual as the Meter). The Meter features closed-case calibration to use with reference sources.
772/773 Calibration Manual How to Contact Fluke To contact Fluke, call one of the following telephone numbers: • Technical Support USA: 1-800-44-FLUKE (1-800-443-5853) • Calibration/Repair USA: 1-888-99-FLUKE (1-888-993-5853) • Canada: 1-800-36-FLUKE (1-800-363-5853) • Europe: +31 402-675-200 • Japan: +81-3-3434-0181 • Singapore: +65-738-5655 • Anywhere in the world: +1-425-446-5500 Or, visit Fluke's website at www.fluke.com. To register your product, visit http://register.fluke.com.
Milliamp Process Clamp Meter Safety Information • When you measure, keep your fingers behind the Tactile Barrier. See Figure 1. • Do not use with a non-insulated conductor. • Do not use near strong magnetic fields. • Remove test leads before you open the case. WCaution To prevent damage to the Meter, do not open it. Do not use a solvent to clean the Meter, and do not put the Meter in water. 2 1 773 MILLIAMP PROCESS CLAMP METER gep06.
772/773 Calibration Manual Symbols Table 1 refers to the symbols that are on the Meter or in this manual. Table 1. Symbols - Do not apply around, or remove from HAZARDOUS LIVE conductors. W Dangerous. Important data. See Users Manual. X Risk of Electrical Shock. T Equipment protected by double or reinforced insulation. M Battery B Low Battery P Confirms with relevant European Union directives. F DC (Direct Current) ~ Do not dispose of this the product as unsorted municipal waste.
Milliamp Process Clamp Meter General Specifications DC Voltage Source (773) Range ........................................ 0-10 V Resolution.................................. 0.01 V Accuracy.................................... 0.2 % + 2 counts mA Drive.................................... 2 mA max all conditions mA DC IN/OUT (773) Sourcing range .......................... 0-24 mA Sourcing resolution .................... 0.01 mA Sourcing accuracy ..................... 0.2 % + 2 counts Measurement range ....
772/773 Calibration Manual Basic Maintenance XWWarning To prevent electrical shock or personal injury, repairs or servicing not included in this manual must be done only by qualified personnel. How to Clean the Meter XWWarning To prevent electrical shock or personal injury, remove test leads before you clean the Meter. W Caution To prevent damage to the Meter, do not use aromatic hydrocarbons or chlorinated solvents when you clean the Meter. These solutions react with the plastics used in the Meter.
static awareness A Message From Fluke Corporation Some semiconductors and custom IC's can be damaged by electrostatic discharge during handling. This notice explains how you can minimize the chances of destroying such devices by: 1. Knowing that there is a problem. 2. Learning the guidelines for handling them. 3. Using the procedures, packaging, and bench techniques that are recommended. The following practices should be followed to minimize damage to S.S. (static sensitive) devices. 1.
5. USE STATIC SHIELDING CONTAINERS FOR HANDLING AND TRANSPORT. 8. WHEN REMOVING PLUG-IN ASSEMBLIES HANDLE ONLY BY NON-CONDUCTIVE EDGES AND NEVER TOUCH OPEN EDGE CONNECTOR EXCEPT AT STATIC-FREE WORK STATION. PLACING SHORTING STRIPS ON EDGE CONNECTOR HELPS PROTECT INSTALLED S.S. DEVICES. 6. DO NOT SLIDE S.S. DEVICES OVER ANY SURFACE. 9. HANDLE S.S. DEVICES ONLY AT A STATIC-FREE WORK STATION. 10. ONLY ANTI-STATIC TYPE SOLDERSUCKERS SHOULD BE USED. 11. ONLY GROUNDED-TIP SOLDERING IRONS SHOULD BE USED. 7.
Milliamp Process Clamp Meter Performance Tests gep02.eps Figure 2. Battery Replacement Performance Tests XWWarning To prevent electrical shock, personal injury, or fire: • Repairs or Meter servicing must be done only by qualified personnel. • Do not do the verification tests or calibration adjustment in this manual unless qualified. The tests that follow verify the functions of the Meter. If the Meter fails the verification tests, repair is necessary. For Meter servicing, see “How to Contact Fluke”.
772/773 Calibration Manual How to Test the Batteries Prior to performing the following tests, check the batteries with a multimeter and replace as necessary. See “Battery Replacement”. How to Test the Display 1. Push and hold H while powering on the Meter. 2. Compare the Meter display to Figure 3. 3. Examine all display segments for clarity and contrast. MAX Figure 3. Display Test Display Hold Test XW Warning Changes to the input signal will not register on the Meter display when in Display Hold Mode.
Milliamp Process Clamp Meter Accuracy Tests Accuracy Tests Accuracy specifications are valid for 1 year after calibration adjustment when measured at an operation temperature of 18 °C to 28 °C. Allow the Meter to stabilize at room temperature prior to performing the accuracy tests. The following tables list the required performance test points for verifying Meter accuracy. Zero the Meter prior to completing each measurement point.
772/773 Calibration Manual Volts DC Measure Accuracy Tests Step UUT Meter Reading Limit Calibrator Output Low High 1 0.00 V -0.02 V 0.02 V 2 10.00 V 9.96 V 10.04 V 3 -10.00 V -10.04 V -9.96 V 4 20.00 V 19.94 V 20.06 V 5 -20.00 V -20.06 V -19.94 V 6 30.00 V 29.92 V 30.08 V 7 -30.00 V -30.08 V -29.92 V mA DC Source Accuracy Tests Step DMM Reading Limit UUT Meter Output Low High 1 0.00 mA -0.02 mA 0.02 mA 2 4.00 mA 3.97 mA 4.03 mA 3 8.00 mA 7.96 mA 8.
Milliamp Process Clamp Meter Calibration Adjustment To turn on Calibration mode: 1. Remove the batteries and substitute with a lab supply set to 6 V dc. 2. Open the battery door. The calibration button is usually hidden by the factory calibration seal. 3. Use a small probe and push the calibration button longer than 2 seconds. See Figure 4. Calibration Button Figure 4. Accessing the Calibration Button gep01.eps There are five Meter functions to adjust: 1. Clamp measure 2. mA measure 3.
772/773 Calibration Manual Table 4 shows the Meter buttons you use to adjust the Meters calibration. Table 4. Calibration Adjustments Button Calibration Adjustment Description A short button push (1 second) changes the Meter to the first calibration step Q A long button push exits the Meters calibration mode D G Adjust source output in large steps E F Adjust source output in small steps H Forward to subsequent calibration step The Meter display shows the value in each adjustment step.
Milliamp Process Clamp Meter Calibration Adjustment mA DC Clamp Measure Adjustment Procedure To adjust the Clamp Measure function, use the Calibrator to apply the necessary Meter input and do the steps in Table 6. Table 6. Clamp Measure Adjustment Procedure Step Meter Display Calibrator Output Procedure 1 0.00 mA 0.00 mA Stop for 10 seconds, push H 2 -20.00mA -20.00 mA Push H 3 0.00mA 0.00 mA Stop for 10 seconds, push Hold button 4 20.00mA 20.00 mA Push H 5 0.00 mA 0.
772/773 Calibration Manual mA DC Source Adjust Procedure To adjust the mA Source function, use the Calibrator to apply the necessary Meter input and do the steps in Table 9. Table 9. mA Source Adjustment Procedure Step Meter LCD display Action 1 4.00 mA Adjust until Meter output is 4.00 mA, push H 2 20.00 mA Adjust until Meter output is 20.
Milliamp Process Clamp Meter Replaceable Parts Replaceable Parts Table 11 and Figure 5 show all replaceable parts. Table 11. Replaceable Parts Item Description Quantity Part or Model Number A AA Batteries, 1.
772/773 Calibration Manual 4 1 8 2 3 ® 7 772/7 5 ation Calibr 6 Produc in USA. ies. d. Printed ive compan reserve All rights their respect t specific ations are subject to change without Manua l notice. ber 2007 ation, arks of NovemFluke Corpor are tradem © 2007 All product names 10 11 12 13 14 Figure 5. Replaceable Parts 16 9 73 Meter Clamp cess p Pro Milliam gep04.
