Fluke 789 Uživatelský manuál

789 ProcessMeter™ Users Manual August 2002 Rev. 3, 3/13 © 2002-2013 Fluke Corporation, All rights reserved. Specifications are subject to change

789 Users Manual 2 To view, print, or download the latest manual supplement, visit http://us.fluke.com/usen/support/manuals. Safety Information A Warn

ProcessMeter™ Safety Information 3 • Do not use AutoHold to determine if dangerous voltage is present. AutoHold will not capture unstable or

789 Users Manual 4 Table 1. International Symbols Symbol Meaning Symbol Meaning  Risk of danger. Important information. See Manual.  Hazardous volta

ProcessMeter™ How to Get Started 5 How to Get Started If familiar with the Fluke 80 Series DMM, read “Using the Current Output Functions,” rev

789 Users Manual 6 Getting Acquainted with the Meter To become familiar with the features and functions of the meter, study the following figures and

ProcessMeter™ Getting Acquainted with the Meter 7 Table 2. Input/Output Jacks Item Jack Measurement Functions Source Current Function Simulat

789 Users Manual 8 mAmAmAmAmVVVALOOP POWER250HARTOFF234165 anw002f.eps Figure 3. Rotary Function Switch Positions for Measurements

ProcessMeter™ Getting Acquainted with the Meter 9 Table 3. Rotary Function Switch Positions for Measurements No. Position Function(s) Pushb

789 Users Manual 10 mAmAmAmAmVVVALOOP POWER250HARTOFF231 anw008f.eps Figure 4. Rotary Function Switch Positions for mA Output

ProcessMeter™ Getting Acquainted with the Meter 11 Table 4. Rotary Function Switch Positions for mA Output No. Position Default Function P

LIMITED WARRANTY AND LIMITATION OF LIABILITY This Fluke product will be free from defects in material and workmanship for three years from the date

789 Users Manual 12 670%RANGE HOLDRELMIN MAX%STEPCOARSEFINESpanCheckHz100%32191084 5 anw003f.eps Figure 5. Pushbuttons

ProcessMeter™ Getting Acquainted with the Meter 13 Table 6. Pushbuttons No. Pushbutton Function(s)  K Toggles the backlight (low, high, an

789 Users Manual 14 Table 6. Pushbuttons (cont.) No. Pushbutton Function(s)G FINE h  Measuring: Toggles between frequency counter and voltage measur

ProcessMeter™ Getting Acquainted with the Meter 15 1213151434568711211716910 anw004f.eps Figure 6. Elements of the Display

789 Users Manual 16 Table 7. Display No. Element Meaning  % (Percentage display) Shows the mA measured value or output level in %, in a 0-20 mA or

ProcessMeter™ Getting Acquainted with the Meter 17 Table 7. Display (cont.) No. Element Meaning M mA, DC, mV, AC, M or kΩ, kHz Show the input

789 Users Manual 18 Measuring Electrical Parameters The proper sequence for taking measurements follows: 1. Plug the test leads into the appropriate

ProcessMeter™ Measuring Electrical Parameters 19 6. The diode is good if it passes the tests in steps 4 and 5. Displaying Minimum, Maximum, a

789 Users Manual 20 Compensating for Test Lead Resistance Use the relative reading feature (Q on the display) to set the present measurement as a rela

ProcessMeter™ Using the Current Output Functions 21 mAmAmAmAmVVVALOOP POWER250HARTOFFmAACOMV0%RANGE HOLDRELMIN MAX%STEPCOARSEFINESpanCheckHz10

i Table of Contents Title Page Introduction ...

789 Users Manual 22 Simulate Mode Simulate mode is so named because the meter simulates a current loop transmitter. Use simulate mode when an external

ProcessMeter™ Using the Current Output Functions 23 mAmAmAmAmVVVALOOP POWER250HARTOFFmAACOMV0%RANGE HOLDRELMIN MAX%STEPCOARSEFINESpanCheckHz10

789 Users Manual 24 Producing a Steady mA Output When the rotary function switch is in the OUTPUT [ mA position, and the OUTPUT jacks are connected to

ProcessMeter™ Using the Current Output Functions 25 Table 8. mA Output Adjust Pushbuttons Pushbutton Adjustment X R COARSE Adjusts up 0.1 mA

789 Users Manual 26 Table 9. mA Stepping Pushbuttons Pushbutton Adjustment X M % STEP Adjusts up to the next higher 25 % step % STEP G W Adjusts down

ProcessMeter™ Power-Up Options 27 When the rotary function switch is in the OUTPUT Ymonp position, and the output jacks are connected to an ap

789 Users Manual 28 Table 11. Power-Up Options Option Pushbutton Default Action Taken Change current span 0 % setting R Remembers last setting Toggl

ProcessMeter™ Loop Power Supply Mode 29 Loop Power Supply Mode The Loop Power Supply Mode can be used for powering up a process instrument (tr

789 Users Manual 30 RedTEST DC PWR+–+––+BlackmAmAmAmAmVVVALOOP POWER250HARTOFFmAACOMV0%RANGE HOLDRELMIN MAX%STEPCOARSEFINESpanCheckHz100%789PROCESSMET

ProcessMeter™ Battery Life 31 Battery Life Warning To avoid false readings, which could lead to possible electric shock or personal injury, r

789 Users Manual ii Power-Up Options ... 27

789 Users Manual 32 Replacing the Batteries ! Warning To avoid electrical shock: • Remove test leads from the meter before opening the battery door.

ProcessMeter™ General Maintenance 33 F2F1 anw037.eps Figure 11. Replacing the Batteries and Fuses

789 Users Manual 34 Replacing a Fuse ! Warning To avoid personal injury or damage to the meter, use only the specified replacement fuse, 440 mA 1000 V

ProcessMeter™ Replacement Parts and Accessories 35 If the meter still does not work, contact a Fluke Service Center. If the meter is under war

789 Users Manual 36 1826172223302719292824252021941256810732161514 13111 anw005f.eps Figure 12. Replacement Parts

ProcessMeter™ Replacement Parts and Accessories 37 Table 13. Replacement Parts Item Number Reference Designator Description Fluke PN or Model

789 Users Manual 38 Table 13. Replacement Parts (continued) Item Number Reference Designator Description Fluke PN or Model no. Quantity Q MP50 Shoc

ProcessMeter™ Specifications 39 Specifications All specifications apply from +18 °C to +28 °C unless stated otherwise. All specifications assu

789 Users Manual 40 DC Millivolts Measurement Range (mV dc) Resolution Accuracy, ±(% of Reading + Counts) 400.0 0.1 mV 0.1 % + 2 AC Volts Measurem

ProcessMeter™ Specifications 41 AC Current Measurement Range 45 Hz to 2 kHz Resolution Accuracy, ±(% of Reading + Counts) Typical Burden Volta

iii List of Tables Table Title Page 1. International Symbols ...

789 Users Manual 42 Ohms Measurement Range Resolution Measurement Current Accuracy, ±(% of Reading + Counts) 400.0 Ω 0.1 Ω 220 μA 0.2 % + 2 4.000 kΩ

ProcessMeter™ Specifications 43 Frequency Counter Accuracy Range Resolution Accuracy, ±(% of Reading + Counts) 199.99 Hz 0.01 Hz 0.005 % +

789 Users Manual 44 Diode Test and Continuity Test Diode test indication ... Displays voltage drop across dev

ProcessMeter™ Specifications 45 General Specifications Maximum voltage applied between any jack and earth ground ...

789 Users Manual 46

789 Users Manual iv

v List of Figures Figure Title Page 1. Fluke 789 ProcessMeter ...

789 Users Manual vi

1 ProcessMeter Introduction Warning Read “Safety Information” before using the meter. The Fluke 789 ProcessMeter (referred to as “the meter”) is a