187-189 Multimeter User Manual Rev 1 Aug 2000

LIFETIME LIMITED WARRANTY Each Fluke 20, 70, and 180 Series DMM purchased after October 1, 1996 will be free from defects in material and workmanship for its lifetime. This warranty does not cover fuses, disposable batteries and damage from neglect, misuse, contamination, alteration, accident or abnormal conditions of operation or handling, including overvoltage failures caused by use outside the DMMs specified rating, or normal wear and tear of mechanical components. This warranty covers the original purchaser only and is not transferable. For ten years from the date of purchase, this warranty also covers the LCD. Thereafter, for the lifetime of the DMM, Fluke will replace the LCD for a fee based on then current component acquisition costs. To establish original ownership and prove date of purchase, please complete and return the registration card accompanying the product. Fluke will, at its option, repair at no charge, replace, or refund the purchase price of a defective product purchased through a Fluke authorized sales outlet and at the applicable international price. Fluke reserves the right to charge for importation costs of repair/replacement parts if product purchased in one country is sent for repair elsewhere. If product is defective, contact your nearest Fluke authorized service center to obtain return authorization information, then send the product to that service center, with a description of the difficulty, postage and insurance prepaid (FOB Destination). Fluke assumes no risk for damage in transit. Fluke will pay return transportation for product repaired or replaced in-warranty. Before making any non-warranty repair, Fluke will estimate cost and obtain authorization, then invoice you for repair and return transportation. THIS WARRANTY IS YOUR ONLY REMEDY. NO OTHER WARRANTIES, SUCH AS FITNESS FOR A PARTICULAR PURPOSE, ARE EXPRESSED OR IMPLIED. FLUKE SHALL NOT BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL OR CONSEQUENTIAL DAMAGES OR LOSSES, INCLUDING LOSS OF DATA, ARISING FROM ANY CAUSE OR THEORY. AUTHORIZED RESELLERS ARE NOT AUTHORIZED TO EXTEND ANY DIFFERENT WARRANTY ON FLUKE’S BEHALF. Since some states do not allow the exclusion or limitation of an implied warranty or of incidental or consequential damages, this limitation of liability may not apply to you. If any provision of this warranty is held invalid or unenforceable by a court or other decision-maker of competent jurisdiction, such holding will not affect the validity or enforceability of any other provision.

Fluke Corporation P.O. Box 9090 Everett, WA 98206-9090 U.S.A. 11/99

Fluke Europe B.V. P.O. Box 1186 5602 BD Eindhoven The Netherlands

Table of Contents

Chapter 1

Title

Page

Before You Start ... 1-1 Safety Information... 1-1 Contacting Fluke... 1-1 Symbols ... 1-4

2

Getting Acquainted... 2-1 Introduction... Turning the Meter On... Battery Considerations ... Automatic Power Off ... Automatic Backlight Off... Low Battery Indication... Rotary Switch... Pushbuttons...

i

2-1 2-1 2-2 2-2 2-3 2-3 2-4 2-5

Model 187 & 189 Users Manual Selecting the Range... 2-10 Understanding the Display ... 2-10 Primary Display ... 2-10 Secondary Display... 2-11 Bar Graph... 2-11 Using the Input Terminals ... 2-17 Using Display Hold ... 2-18 Using AutoHOLD... 2-19 Using MIN MAX... 2-19 Using FAST MN MX ... 2-21 Using HOLD with MIN MAX or FAST MN MX... 2-22 Using Relative Mode (REL)... 2-22 3

Making Measurements... 3-1 Introduction ... 3-1 Measuring Voltage ... 3-1 Measuring AC Voltage... 3-2 dB Measurements in AC Volts Functions ... 3-3 Measuring DC Voltage ... 3-4 Both AC and DC Voltage Measurements ... 3-4 Measuring Resistance... 3-6 Testing for Continuity ... 3-8 Using Conductance for High Resistance Tests ... 3-9 Measuring Capacitance... 3-12 Testing Diodes ... 3-13 Measuring Temperature ... 3-15 Measuring Current ... 3-16 Input Alert™ Feature ... 3-17

ii

Contents (continued) Measuring AC Current ... Measuring DC Current ... Measuring Frequency ... Measuring Duty Cycle... Measuring Pulse Width... 4

Using Memory & Communications Features ... 4-1 Introduction... Types of Memory ... Saved Readings Memory... Logged Readings Memory... Storing Saved Readings ... Starting Logging ... Stopping Logging... Viewing Memory Data... Clearing Memory ... Using Communications (187 and 189) ...

5

3-18 3-20 3-22 3-23 3-25

4-1 4-1 4-1 4-1 4-2 4-2 4-2 4-3 4-5 4-5

Changing the Default Settings ... 5-1 Introduction... Selecting Setup Options ... Adjusting the Temperature Offset... Selecting Display Resolution (3 1/2 or 4 1/2 Digits)... Setting the Power Off Timeout... Setting the 24-Hour Clock... Setting the Line (Main) Frequency... Returning to Factory Defaults ... Saving Setup Options ...

iii

5-1 5-1 5-4 5-6 5-6 5-7 5-7 5-8 5-8

Model 187 & 189 Users Manual 6

Maintenance ... 6-1 Introduction ... 6-1 General Maintenance... 6-1 Testing the Fuses... 6-1 Replacing the Batteries ... 6-3 Replacing the Fuses ... 6-5 User-Replaceable Parts ... 6-5 In Case of Difficulty ... 6-5

7

Specifications... 7-1 Safety and Compliances ... 7-1 Physical Specifications... 7-2 Feature Summary... 7-3 Basic Specifications ... 7-4 Detailed Accuracy Specifications ... 7-5 Frequency Counter Sensitivity ... 7-11 Burden Voltage (A, mA, µA) ... 7-11 Input Characteristics... 7-12

iv

List of Tables Table

Title

Page

1-1. 1-2. 2-1. 2-2. 2-3. 3-1. 4-1. 5-1. 5-2. 6-1.

Safety Information... International Electrical Symbols... Rotary Switch Selections ... Pushbuttons... Display Features ... Current Measurement ... View Display ... Function Specific Setup Selections... Common Setup Selections ... User-Replaceable Parts...

1-2 1-4 2-6 2-8 2-13 3-16 4-4 5-2 5-3 6-6

v

List of Figures

Figure

Title

Page

2-1. 2-2. 2-3. 2-4. 2-5. 2-6. 2-7. 2-8. 3-1. 3-2. 3-3. 3-4. 3-5. 3-6. 3-7. 3-8. 3-9.

AC Volts Display ... Rotary Switch... Pushbuttons... Display Features ... Input Terminals ... Display Hold and AutoHOLD ... Min Max Avg ... Relative Mode... AC Voltage Measurement... dBm Display... AC and DC Display ... DC Voltage Measurement... Resistance Measurement ... Continuity Test... Conductance Measurement... Capacitance Measurement ... Diode Test ...

2-2 2-4 2-5 2-12 2-17 2-18 2-21 2-22 3-2 3-3 3-5 3-6 3-7 3-10 3-11 3-13 3-14

vii

Model 187 & 189 Users Manual 3-10. Temperature Measurement ... 3-15 3-11. AC Current Measurement... 3-19 3-12. DC Current Measurement ... 3-21 3-13. Functions Allowing Frequency Measurement... 3-22 3-14. Hz Display ... 3-23 3-15. Duty Cycle Measurements ... 3-24 3-16. Duty Cycle Display ... 3-25 3-17. Pulse Width Measurements... 3-26 3-18. Pulse Width Display ... 3-27 4-1. View Display... 4-4 5-1. Adjusting Temperature Offset ... 5-5 6-1. Testing the Current Fuses... 6-2 6-2. Battery and Fuse Replacement ... 6-4

viii

Chapter 1

Before You Start Safety Information

Contacting Fluke

The Fluke Model 187 and Model 189 True RMS Multimeters (hereafter referred to as the “meter”) comply with:

To order accessories, receive assistance, or locate the nearest Fluke distributor or Service Center, call:

• • • • • •

EN61010.1:1993 ANSI/ISA S82.01-1994 CAN/CSA C22.2 No. 1010.1-92 1000V Overvoltage Category III, Pollution Degree 2 600V Overvoltage Category IV, Pollution Degree 2 UL 3111-1

Use the meter only as specified in this manual. Otherwise, the protection provided by the meter may be impaired. Refer to safety information in Table 1-1. A Warning identifies conditions and actions that pose hazards to the user. A Caution identifies conditions and actions that may damage the meter or the equipment under test.

USA: 1-888-99-FLUKE (1-888-993-5853) Canada: 1-800-36-FLUKE (1-800-363-5853) Europe: +31 402-678-200 Japan: +81-3-3434-0181 Singapore: +65-738-5655 Anywhere in the world: +1-425-446-5500 Address correspondence to: Fluke Corporation P.O. Box 9090, Everett, WA 98206-9090 USA

Fluke Europe B.V. P.O. Box 1186, 5602 BD Eindhoven The Netherlands

Visit us on the World Wide Web at: www.fluke.com

1-1

Model 187 & 189 Users Manual Table 1-1. Safety Information

WWarning To avoid possible electric shock or personal injury, follow these guidelines:

1-2

•

Do not use the meter if it is damaged. Before you use the meter, inspect the case. Look for cracks or missing plastic. Pay particular attention to the insulation surrounding the connectors.

•

Inspect the test leads for damaged insulation or exposed metal. Check the test leads for continuity. Replace damaged test leads before you use the meter.

•

If this product is used in a manner not specified by the manufacturer, the protection provided by the equipment may be impaired.

•

Do not use the meter if it operates abnormally. Protection may be impaired. When in doubt, have the meter serviced.

•

Do not operate the meter around explosive gas, vapor, or dust.

•

Do not apply more than the rated voltage, as marked on the meter, between terminals or between any terminal and earth ground.

•

Before use, verify the meter’s operation by measuring a known voltage.

•

When measuring current, turn off circuit power before connecting the meter in the circuit. Remember to place the meter in series with the circuit.

•

When servicing the meter, use only specified replacement parts.

•

Use caution when working above 30 V ac rms, 42 V peak, or 60 V dc. Such voltages pose a shock hazard.

•

Avoid working alone.

Before You Start Safety Information

1

Table 1-1. Safety Information (cont.)

WWarning • • • • • • •

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 test leads, disconnect the live test lead first. Remove test leads from the meter before you open the battery door. Do not operate the meter with the battery door or portions of the cover removed or loosened. To avoid false readings, which could lead to possible electric shock or personal injury, replace the batteries as soon as the low battery indicator (M) appears. Use only type AA batteries, properly installed in the meter case, to power the meter. To avoid the potential for fire or electrical shock, do not connect the thermocouples to electrically live circuits.

Caution To avoid possible damage to the meter or to the equipment under test, follow these guidelines: • Disconnect circuit power and discharge all high-voltage capacitors before testing resistance, continuity, diodes, or capacitance. • Use the proper terminals, function, and range for your measurements. • Before measuring current, check the meter’s fuses and turn power OFF to the circuit before connecting the meter to the circuit.

1-3

Model 187 & 189 Users Manual

Symbols Symbols used on the meter and in this manual are explained in Table 1-2. Table 1-2. International Electrical Symbols

1-4

AC (Alternating Current)

Earth ground

DC (Direct Current)

Fuse

AC and DC

Double insulated

Battery

Important information

Complies with relevant Canadian Standards Association directives

Complies with European Union directives

Inspected and licensed by TÜV Product Services.

Underwriters Laboratories, Inc.

Chapter 2

Getting Acquainted

Introduction

Turning the Meter On

Although this manual describes the operation of both Models 187 and 189, all illustrations and examples assume use of Model 189. Additional capabilities with Model 189 are discussed in Chapter 4. These capabilities include the following:

To turn the meter on, turn the rotary switch from OFF to any switch setting.

•

An enhanced memory function that features an additional position (VIEW MEM) on the rotary switch.

•

Logging

•

Save

•

Memory

The ac volts function (shown in Figure 2-1) is assumed in the following discussion. You do not need connections to the input terminals at this time. If you want a view of the full display (all segments illuminated), press and hold Q while turning the meter on. Release the button when you are done viewing the full display.

2-1

Model 187 & 189 Users Manual

Automatic Power Off

tc031f.eps

The display blanks and the meter goes into a “sleep” mode if you have not changed the rotary switch position or pressed a button for a set period. While in Sleep mode, pressing any button turns the meter on. The meter then returns to the display for the function selected with the rotary switch; all previously activated button features (HOLD, Hz, etc.) are discarded.

Figure 2-1. AC Volts Display

Battery Considerations The meter uses four AA alkaline batteries. The following paragraphs describe several techniques used to conserve battery power.

2-2

The automatic power off is preset to 15 minutes. From the Setup menu (see Chapter 5), you can specify a maximum period of 23 hours, 59 minutes. If you set the period to 0, the meter remains on until you turn the rotary switch to OFF or the batteries become too weak. Automatic power off does not occur if the meter is in MIN MAX, FAST MN MX, AutoHOLD, or LOGGING (Model 189) mode.

Getting Acquainted Battery Considerations

2

Automatic Backlight Off

Low Battery Indication

Press T to select the backlight level (low, high, or off.) In low or high, the backlight turns off automatically after a given period. This period is also preset to 15 minutes and can be set to a maximum of 99 minutes from the setup menu. If the period is set to 0, the backlight is on indefinitely and can only be turned off by pressing T or turning the meter off.

A constant battery icon ( B) in the upper left corner of the display notifies you that the batteries are low and should be replaced.

Note See Chapter 5 for power off and backlight off setup information.

WWarning To avoid false readings, which could lead to possible electric shock or personal injury, replace the batteries as soon as the battery icon ( B) appears. A flashing battery icon means that battery failure is imminent. The backlight cannot be used in this condition. MIN MAX and FAST MN MX features turn off. For Model 189, logging and communications also cease.

2-3

Model 187 & 189 Users Manual

Rotary Switch

The rotary switch is shown in Figure 2-2. Each position is described in Table 2-1.

Turn the meter on by selecting any measurement function (identified with white letters around the rotary switch). The meter presents a standard display for that function (range, measurement units, modifiers, etc.) The display may also be influenced by some of the choices made in Setup. Use the blue button to select any rotary switch alternate function (labeled in blue letters). You can also use other buttons to choose modifiers for the selected function. When you turn the rotary switch from one function to another, a display for the new function appears. Button choices made in one function do not carry over into another function. With Model 189, a VIEW MEM switch position is available; refer to Chapter 4 for more information.

nS

mV

ac+dc

F C

V

ac+dc

A mA

mV

A

V

A mA

dB

dB

ac+dc

A

OFF

ac+dc

VIEW MEM CLEAR MEM tc012f.eps

Figure 2-2. Rotary Switch

2-4

Getting Acquainted Pushbuttons

2

Pushbuttons The buttons activate features that augment the function selected with the rotary switch. The buttons are shown in Figure 2-3 and described in Table 2-2. Use the blue button ( %) to access functions labeled in blue for some of the rotary switch positions. Table 2-1 defines all blue button functions. Use the yellow button ( O) followed by other buttons to access additional features. These features appear in yellow above the appropriate keys. Table 2-2 defines yellow button features. This manual identifies the yellow button feature in parentheses following the button sequence . For example, activating the FAST MN MX mode appears as O M (FAST MN MX).

AutoHOLD

FAST MN MX

LOGGING

HOLD

MIN MAX

REL

CANCEL

SAVE

Hz % ms

RANGE

YES

NO

SETUP

tc013f.eps

Figure 2-3. Pushbuttons The following yellow button features are not available on Model 187: (YES), (NO), (LOGGING), and (SAVE).

2-5

Model 187 & 189 Users Manual Table 2-1. Rotary Switch Selections Position

% Blue Key Function

Rotary Switch Function

AC voltage measurement from 0 V to 1000.0 V

dB over AC, AC over dB

,

AC millivolt measurement from 0 mV to 3000.0 mV

dB over AC, AC over dB

$

DC voltage measurement from 0 V to 1000.0 V

AC over DC (AC in primary display, DC in secondary display), DC over AC, ac+dc

m

DC millivolt measurement from 0 mV to 3000.0 mV

AC over DC (AC in primary display, DC in secondary display), DC over AC, ac+dc

Resistance measurement from 0 Ω to 500.0 MΩ

Continuity test

j

Conductance measurement from 0 nS to 50.00 nS

z

Capacitance measurement from 0.001 nF to 50 mF

Diode test

w

Temperature measurement

Toggles between °C and °F.

2-6

Getting Acquainted Pushbuttons

2

Table 2-1. Rotary Switch Positions (cont.) % Blue Key Function

Position

Rotary Switch Function

I

AC current measurements from 0 mA to 20.000 A

none

AC current measurements from 0 µA to 5000.0 µA

none

DC current measurements from 0 mA to 20.000 A

AC over DC (AC in primary display, DC in secondary display), DC over AC, ac+dc

DC current measurements from 0 µA to 5000.0 µA

AC over DC (AC in primary display, DC in secondary display), DC over AC, ac+dc

(Model 189 only.) Access data held in the meter’s memory. See Chapter 4 for more information.

CLEAR MEM. See Chapter 4 for more information.

= K x VIEW MEM

2-7