Fluke 189 user manual Measuring Temperature, Shock, do not connect the thermocouples to

Page 51

 

 

 

 

 

 

 

Making Measurements

3

 

 

 

 

 

 

 

Measuring Temperature

Measuring Temperature

 

 

 

 

 

 

 

 

To measure temperature, set up the meter as shown in

 

 

 

 

 

 

 

 

Figure 3-10. The meter begins temperature measurement

 

189 LOGGING MULTIMETER

 

 

 

 

 

 

 

 

 

 

 

in the degree units last used (Celsius ° C or Fahrenheit ° F).

 

 

 

 

 

 

 

 

Once you have selected the temperature function, you can

 

 

 

 

 

 

 

 

change units by pressing the blue button. The meter

 

 

 

 

 

F

C

 

remembers the units selected until they are changed.

HOLD

MIN MAX

REL

YES

 

 

 

AutoHOLD

FAST MN MX

LOGGING

 

 

 

 

 

 

CANCEL

 

SAVE

NO

 

 

 

The primary display shows either the temperature or the

 

Hz % ms

RANGE

 

F

 

 

SETUP

nS

 

 

 

 

 

message ‘0PEn’ (for an open thermocouple condition).

 

 

 

C

A

C

 

 

 

 

ac+dc mV

 

F

 

 

 

Shorting the input will display the temperature at the meter

ac+dc V

 

 

 

mA

 

 

 

dB mV

 

 

 

A

 

 

 

terminals.

 

 

 

 

 

 

dB V

 

 

 

mA

 

 

 

 

 

 

 

 

 

A

 

 

 

 

 

 

 

 

 

ac+dc

 

 

 

 

 

OFF

 

 

 

A

 

 

 

The secondary display shows any non-zero temperature

 

 

 

 

ac+dc

 

 

 

 

 

 

VIEW

 

 

 

offset. This offset is established as a calibrating value

 

 

 

CLEAR MEM

 

 

 

A

mA

 

COM

V

 

 

 

 

 

 

 

 

 

TEMPERATURE

 

 

 

during setup. Refer to Chapter 5 for additional information.

 

A

 

 

 

 

 

 

FUSED

400mA

CAT

 

 

 

 

 

10A MAX

 

 

 

 

 

 

 

 

 

 

FUSED

1000V

 

 

 

The following pushbuttons cannot be used when taking

 

 

 

 

 

 

 

 

temperature measurements:

 

 

 

 

 

 

 

 

Frequency ( N)

 

 

80AK

 

Vent

 

FAST MN MX ( O M)

 

 

 

 

 

80PK-1 Type K

or

 

 

 

 

 

 

 

Pipe

 

Ranging ( R)

 

 

 

 

 

Thermocouple

 

 

 

 

 

 

 

 

 

WWarning

 

 

 

 

 

Probe

 

 

 

 

 

 

 

 

 

 

 

 

To avoid the potential for fire or electrical

 

 

 

 

 

 

ach010f.eps

shock, do not connect the thermocouples to

Figure 3-10. Temperature Measurement

electrically live circuits.

3-15

Image 51
Contents Model 187 Lifetime Limited Warranty Table of Contents Making Measurements Model 187Iii Specifications MaintenanceList of Tables Model 187 List of Figures Viii Safety Information Before You StartContacting Fluke WWarning Safety InformationBefore You Start International Electrical Symbols SymbolsGetting Acquainted IntroductionTurning the Meter On Automatic Power Off Battery ConsiderationsAutomatic Backlight Off Low Battery IndicationRotary Switch Rotary SwitchPushbuttons PushbuttonsBlue Key Function Rotary Switch Selections Position Rotary Switch FunctionView MEM Rotary Switch PositionsButton Pushbuttons Yellow Button Description Function Yellow Button Function Pushbuttons Button DescriptionSelecting the Range Understanding the DisplayPrimary Display Secondary Display Bar GraphDisplay Features Number Feature Display Features Description 8.8.8 Display Features NumberDisplay Features Description Number FeatureFMS8888 HM8888 8.8 Display Features Number 51000Input Terminals Using the Input TerminalsDisplay Hold and AutoHOLD Using Display HoldUsing MIN MAX Using AutoHOLDModel 187 Min Max Avg Using Fast MN MXUsing Hold with MIN MAX or Fast MN MX Using Relative Mode RELMeasuring Voltage Making MeasurementsAC Voltage Measurement Measuring AC VoltageDBm Display DB Measurements in AC Volts FunctionsBoth AC and DC Voltage Measurements Measuring DC VoltageAC and DC Display AC over DC DC over ACCapacitors before measuring resistance Measuring ResistanceOFF Automatically subtract this value Testing for ContinuityUsing Conductance for High Resistance Tests For in-circuit tests, turn circuit power off Conductance Measurement Measuring Capacitance Capacitance Measurement Testing DiodesDiode Test Measuring Temperature Shock, do not connect the thermocouples toElectrically live circuits Input Ranges Measuring CurrentMeasuring Current Input Alert FeatureFollowing are some tips for measuring current Measuring AC Current11. AC Current Measurement Measuring DC Current Current through one component Total current to circuit13. Functions Allowing Frequency Measurement Measuring Frequency14. Hz Display Measuring Duty CycleMeasures Negative Pulse Measures Positive Pulse16. Duty Cycle Display Measuring Pulse WidthStart and Stop on Negative Slope Start and Stop on Positive Slope18. Pulse Width Display Model 187 Logged Readings Memory Using Memory & Communications FeaturesTypes of Memory Saved Readings MemoryStoring Saved Readings Starting LoggingStopping Logging To avoid electric shock, disconnect the test Viewing Memory DataMEM View DisplayClearing Memory Using Communications 187Model 187 Selecting Setup Options Changing the Default SettingsOption Function Specific Setup SelectionsFactory Default PreconditionChoices Common Setup SelectionsAdjusting the Temperature Offset Changing the Default Settings Setting the Power Off Timeout Selecting Display Resolution 3 1/2 or 4 1/2 DigitsSetting the Line Main Frequency Setting the 24-Hour ClockSaving Setup Options Returning to Factory DefaultsMaintenance Introduction General MaintenanceTesting the Fuses Replace F2 if Replace F1 if Displayed Replacing the Batteries Battery and Fuse Replacement Replacing the Fuses User-Replaceable PartsCase of Difficulty MP8 MP9 Safety and Compliances SpecificationsPhysical Specifications Feature Summary Basic Specifications Detailed Accuracy Specifications KHz-100 kHz Accuracy Function45-1 kHz 20 kHzDC a 500.00 Ω Capacitance Diode Test MIN MAX AVG Burden Voltage A, mA, µA Frequency Counter SensitivityInput Characteristics