Fluke FLUKE-88-5 - Manuals

v List of Tables Table Title Page 1. Electrical Symbols ................................................................................................................. 4 2. 88 V Automotive Multimeter Front Controls ........................................................................... 5 3. In...

vii List of Figures Figure Title Page 1. 88 V Automotive Multimeter Front ......................................................................................... 5 2. Measuring AC and DC Voltage ............................................................................................. 14 3. Tes...

Model 88 V Users Manual viii 18. Measuring the No-Load Voltage of a Battery ........................................................................ 55 19. Testing for Continuity in a Switch .......................................................................................... 57 20. Testing the...

Automotive Multimeter Introduction 1 Introduction XW Warning Read "Safety Information" before you use the Meter. The Model 88 V Automotive Multimeter (“the Meter”) is a hand-held, battery-operated measurement device used for voltage, continuity, resistance, current, diode, capacitance, frequ...

Model 88 V Users Manual 2 XW Warning To avoid possible electric shock or personal injury, follow these guidelines: • Use this Meter only as specified in this manual or the protection provided by the Meter might be impaired. • Do not use the Meter if it is damaged. Before you use the Meter, inspect t...

Automotive Multimeter Safety Information 3 • Do not operate the Meter around explosive gas, vapor, or dust. • Use only a single 9 V battery, properly installed in the Meter case, to power the Meter. • When servicing the Meter, use only specified replacement parts. • When using probes, keep fingers b...

Model 88 V Users Manual 4 Table 1. Electrical Symbols B AC (Alternating Current) J Earth ground F DC (Direct Current) I Fuse X Hazardous voltage P Conforms to European Union directives. W Risk of Danger. Important information. See Manual. $ Conforms to relevant Canadian Standards Association directi...

Automotive Multimeter The Meter's Features 5 The Meter's Features Tables 2 through 6 briefly describe the Meter's features. MIN MAX RANGE REL Hz % AutoHOLD A mA COM 400mA FUSED 10A MAX FUSED A 88 3 2 1 4 ayg40f.eps Figure 1. 88 V Automotive Multimeter Front Table 2. 88 V Automotive Multimeter Front ...

Model 88 V Users Manual 6 Table 3. Input Terminals Terminal Description A Input for 0 A to 10.00 A current measurements (20 A overload for 30 seconds maximum), current frequency, duty cycle, and pulse width measurements. mA µ A Input for 0 µ A to 400 mA current measurements (600 mA for 18 hrs.), cur...

Automotive Multimeter The Meter's Features 7 Table 4. Rotary Switch Positions Switch Position Function Any Position When the Meter is turned on, the Meter model number briefly appears on the display. K AC voltage measurement L DC voltage measurement Press A for RPM o , press again for RPM n . 600 mV...

Model 88 V Users Manual 8 Table 5. Pushbuttons Button Switch Position Function N Selects capacitance M Selects temperature g K L Selects measurement of RPM o or RPM n e Switches between dc and ac current f Switches between dc and ac current A (Yellow) Power-up Disables automatic power-off feature (M...

Automotive Multimeter The Meter's Features 9 Table 5. Pushbuttons (cont.) Button Switch Position Function Any switch position Switches between the ranges available for the selected function. To return to autoranging, hold the button down for 1 second. M Switches between ° C and ° F when temperature ...

Model 88 V Users Manual 10 Table 5. Pushbuttons (cont.) Button Switch Position Function E Continuity ReE MIN MAX recording Hz, Duty Cycle Power-up Turns the continuity beeper on and off Switches between Peak (250 µ s) and Normal (100 ms) response times. Toggles the meter to trigger on positive or ne...

Automotive Multimeter The Meter's Features 11 Table 6. Display Features ayg04f.eps Number Feature Indication Y Polarity indicator for the analog bar graph. A Trig Y Positive or negative slope indicator for Hz/duty cycle triggering, pulse width, RPM. B X The continuity beeper is on. C W Relative (REL...

Automotive Multimeter The Meter's Features 13 Number Feature Indication -- 0L Overload condition is detected. Messages bAtt Replace the battery immediately. diSC In the capacitance function, too much electrical charge is present on the capacitor being tested. EEPr Err Invalid EEPROM data. Have Meter...

Model 88 V Users Manual 14 Making Measurements The following sections describe how to take measurements with the Meter. Measuring AC and DC Voltage The Meter's voltage ranges are 600.0 mV, 6.000 V, 60.00 V, 600.0 V, and 1000 V. To select the 600.0 mV dc range, turn the rotary switch to mV. To measur...

Automotive Multimeter Making Measurements 15 Measuring Temperature The Meter measures the temperature of a type-K thermocouple (included). Choose between degrees Celsius ( ° C) or degrees Fahrenheit ( ° F) by pushing C . XW Caution To avoid possible damage to the Meter or other equipment, remember t...

Model 88 V Users Manual 16 Testing for Continuity XW Caution To avoid possible damage to the Meter or to the equipment under test, disconnect circuit power and discharge all high-voltage capacitors before testing for continuity. The continuity test features a beeper that sounds as long as a circuit ...

Automotive Multimeter Making Measurements 17 MIN MAX RANGE REL Hz % AutoHOLD A mA COM 400mA FUSED 10A MAX FUSED A 88 MIN MAX RANGE REL Hz % AutoHOLD A mA COM 400mA FUSED 10A MAX FUSED A 88 For in-circuit tests, turn circuit power off. OFF(open) ON(closed) Activates continuity beeper ayg03.eps Figure...

Model 88 V Users Manual 18 Measuring Resistance XW Caution • To avoid possible damage to the Meter or to the equipment under test, disconnect circuit power and discharge all high-voltage capacitors before measuring resistance. • Follow the manufacturers test procedures when testing air bags. See Tab...

Automotive Multimeter Making Measurements 19 MIN MAX RANGE REL Hz % AutoHOLD A mA COM 400mA FUSED 10A MAX FUSED A 88 Circuit Power OFF In-Circuit Resistance Measurements 1 Disconnect Isolating a Resistor Disconnect 2 3 Isolating a Potentiometer 1 3 2 aug06f.eps Figure 4. Measuring Resistance

Automotive Multimeter Making Measurements 21 Measuring Capacitance XW Caution To avoid possible damage to the Meter or to the equipment under test, disconnect circuit power and discharge all high-voltage capacitors before measuring capacitance. Use the dc voltage function to confirm that the capacit...

Model 88 V Users Manual 22 Testing Diodes XW Caution To avoid possible damage to the Meter or to the equipment under test, disconnect circuit power and discharge all high-voltage capacitors before testing diodes. Use the diode test to check diodes, transistors, silicon controlled rectifiers (SCRs), ...

Automotive Multimeter Making Measurements 23 MIN MAX RANGE REL Hz % AutoHOLD A mA COM 400mAFUSED 10A MAX FUSED A 88 MIN MAX RANGE REL Hz % AutoHOLD A mA COM 400mAFUSED 10A MAX FUSED A 88 MIN MAX RANGE REL Hz % AutoHOLD A mA COM 400mAFUSED 10A MAX FUSED A 88 + Typical Reading + Forward Bias Reverse B...

Model 88 V Users Manual 24 Measuring DC or AC Current XW Warning To avoid possible electric shock or personal injury, never attempt an in-circuit current measurement where the open-circuit potential to earth is greater than 1000 V. You may damage the Meter or be injured if the fuse blows during such...

Model 88 V Users Manual 26 MIN MAX RANGE REL Hz % AutoHOLD A mA COM 400mA FUSED 10A MAX FUSED A 88 Circuit Power: OFF to connect meter. ON for measurement. OFF to disconnect meter. 4 3 Total current to circuit Current through one component 2 5 5 ayg07f.eps Figure 7. Measuring Current

Automotive Multimeter Making Measurements 27 Measuring Frequency The Meter measures the frequency of a voltage or current signal by counting the number of times the signal crosses a threshold level each second. Table 7 summarizes the trigger levels and applications for measuring frequency using the ...

Automotive Multimeter Making Measurements 29 Measuring Duty Cycle Duty cycle (or duty factor) is the percentage of time a signal is above or below a trigger level during one cycle (Figure 8). The duty cycle mode is optimized for measuring the on or off time of logic and switching signals. Systems su...

Model 88 V Users Manual 30 Measuring Pulse Width For a periodic waveform (its pattern repeats at equal time intervals), you can determine the amount of time that the signal is high or low as follows: 1. Measure the signal's frequency by pressing G once. 2. Press G two more times to measure pulse wid...

Automotive Multimeter HiRes Mode 31 For zero adjustments, set the Meter to the desired function, short the test leads together, press F ; then connect the leads to the circuit under test. Adjust the circuit's variable component until the display reads zero. Only the center segment on the zoom bar gr...

Automotive Multimeter Smooth Feature (Power Up Option Only) 33 Table 8. MIN MAX Functions Button MIN MAX Function B Enter MIN MAX recording mode. The Meter is locked in the range displayed before you entered MIN MAX mode. (Select the desired measurement function and range before entering MIN MAX.) T...

Model 88 V Users Manual 34 AutoHOLD Mode XW Warning To avoid possible electric shock or personal injury, do not use AutoHOLD mode to determine that circuits are without power. The AutoHOLD mode will not capture unstable or noisy readings. The AutoHOLD mode captures the present reading on the display...

Automotive Multimeter Using the Meter for Automotive Applications 35 Measuring RPM RPM can be measured in either the dc volts or ac volts function. In dc volts, the measurement is dc-coupled, while in the ac volts position, it is ac coupled. If RPM readings appear noisy, you should use the function ...

Automotive Multimeter Using the Meter for Automotive Applications 37 MIN MAX RANGE REL Hz % AutoHOLD A mA COM 400mA FUSED 10A MAX FUSED A 88 3 2 5 SPARK PLUG SIDE 6 4 ayg21f.eps Figure 9. Measuring RPM with Inductive Pickup

Automotive Multimeter Using the Meter for Automotive Applications 39 MIN MAX RANGE REL Hz % AutoHOLD A mA COM 400mA FUSED 10A MAX FUSED A 88 2 1 6 4 3 ayg22f.eps Figure 10. Testing MAP or BP/MAP Sensors with Frequency Output

Model 88 V Users Manual 40 Measuring Internal Resistance of an Ignition Coil When measuring resistance, be sure that the contact between the probes and the circuit is clean. Dirt, oil, paint, rust or other foreign matter seriously affect resistance. Measure resistance in the primary and secondary co...

Automotive Multimeter Using the Meter for Automotive Applications 41 3 MIN MAX RANGE REL Hz % AutoHOLD A mA COM 400mA FUSED 10A MAX FUSED A 88 MIN MAX RANGE REL Hz % AutoHOLD A mA COM 400mA FUSED 10A MAX FUSED A 88 2 1 4 6 5 ayg11f.eps Figure 11. Measuring Internal Resistance on an Ignition Coil

Model 88 V Users Manual 42 Measuring Pulse Width on a Port Fuel Injector In Pulse Width (and Duty Cycle), the meter defaults to (-) trigger slope; (time signal is low). Press E ( ± TRIGGER) to toggle between (±) trigger slopes. The slope is indicated by the + or - sign next to “Trig” in the lower-le...

Automotive Multimeter Using the Meter for Automotive Applications 43 3 MIN MAX RANGE REL Hz % AutoHOLD A mA COM 400mA FUSED 10A MAX FUSED A 88 2 1 4 5 ayg12f.eps Figure 12. Measuring Pulse Width on a Port Fuel Injector

Model 88 V Users Manual 44 Testing Ripple Voltage on an Alternator Ripple voltage or ac voltage can be measured by switching your meter to ac and connecting the black lead to a good ground and the red lead to the “BAT” terminal on the back of the alternator (not at the battery). 1. Insert the test l...

Automotive Multimeter Using the Meter for Automotive Applications 45 MIN MAX RANGE REL Hz % AutoHOLD A mA COM 400mA FUSED 10A MAX FUSED A 88 2 4 1 3 ayg16f.eps Figure 13. Testing Ripple Voltage on an Alternator

Automotive Multimeter Using the Meter for Automotive Applications 47 MIN MAX RANGE REL Hz % AutoHOLD A mA COM 400mA FUSED 10A MAX FUSED A 88 3 5 2 1 4 6 ayg14f.eps Figure 14. Measuring Voltages on a Typical Oxygen Sensor

Automotive Multimeter Using the Meter for Automotive Applications 49 MIN MAX RANGE REL Hz % AutoHOLD A mA COM 400mA FUSED 10A MAX FUSED A 88 3 2 5 + – 1 4 ayg17f.eps Figure 15. Measuring Starter Circuit Voltage Drop

Automotive Multimeter Using the Meter for Automotive Applications 51 MIN MAX RANGE REL Hz % AutoHOLD A mA COM 400mA FUSED 10A MAX FUSED A 88 7 1 5 4 3 ayg15f.eps Figure 16. Testing the Throttle Position Sensor Resistance

Model 88 V Users Manual 52 Isolating a Circuit Causing a Current Drain 1. Insert the test leads in the input terminals shown in Figure 17. 2. Turn switch to e . 3. Disconnect battery terminal and touch probes as shown. Note Use a battery isolator momentarily while connecting the meter to retain PCM ...

Automotive Multimeter Using the Meter for Automotive Applications 53 MIN MAX RANGE REL Hz % AutoHOLD A mA COM 400mA FUSED 10A MAX FUSED A 88 4 2 5 + 1 3 ayg18f.eps Figure 17. Isolating Circuit Causing Current Drain

Model 88 V Users Manual 54 Measuring System Voltage Bleed the surface charge from the battery by turning the headlights on for 1 minute. Measure the voltage across the battery terminal with the lights off. When possible, individual cell specific gravity should be checked with a hydrometer. A load te...

Automotive Multimeter Using the Meter for Automotive Applications 55 MIN MAX RANGE REL Hz % AutoHOLD A mA COM 400mA FUSED 10A MAX FUSED A 88 2 5 + 4 1 ayg19f.eps Figure 18. Measuring the No-Load Voltage of a Battery

Model 88 V Users Manual 56 Testing for Continuity in a Switch A continuity test verifies that you have a closed circuit. The continuity function detects opens or shorts as fast as 1 millisecond. This can be a valuable trouble-shooting aid when looking for intermittents associated with cables, connec...

Automotive Multimeter 57 MIN MAX RANGE REL Hz % AutoHOLD A mA COM 400mA FUSED 10A MAX FUSED A 88 2 3 5 4 5 1 ayg20f.eps Figure 19. Testing for Continuity in a Switch Using the Meter for Automotive Applications

Model 88 V Users Manual 58 Maintenance XW Warning To avoid possible electric shock or personal injury, repairs or servicing not covered in this manual should be performed only by qualified personnel. General Maintenance Periodically wipe the case with a damp cloth and mild detergent. Do not use abra...

Automotive Multimeter Maintenance 59 MIN MAX RANGE REL Hz % AutoHOLD A mA COM 400mAFUSED 10A MAX FUSED A 88 MIN MAX RANGE REL Hz % AutoHOLD A mA COM 400mAFUSED 10A MAX FUSED A 88 Good F2 fuse: 00.0 Ω to 00.5 Ω Good F1 fuse: 0.995 k Ω to 1.005 k Ω Replace fuse: OL Replace fuse: OL Touch top half of i...

Model 88 V Users Manual 60 Replacing the Fuses Referring to Figure 21, examine or replace the Meter's fuses as follows: 1. Turn the rotary switch to OFF and remove the test leads from the terminals. 2. Remove the battery door by using a standard-blade screwdriver to turn the battery door screws one-...

Automotive Multimeter Service and Parts 61 F1 F2 ayg33f.eps Figure 21. Battery and Fuse Replacement

Automotive Multimeter Service and Parts 63 Table 10. Replacement Parts (cont.) Item Description Qty. Fluke Part or Model Number MP390-391 Access Door Fastener 2 948609 U5 LCD, 4.5 DIGIT,TN, Transflective, Bar Graph, OSPR80 1 2065213 CR6 Light pipe 1 2074057 S2 Keypad 1 2105884 TM1 Model 88 V Automot...

Model 88 V Users Manual 64 F2 F1 MP8 H1 (4) BT1 H5, 6 MP5 MP6 Holster MP15 S2 MP22 MP11 MP10 W Tilt Stand MP2 U5 MP31 MP4 MP8 CR6 ayg34f.eps Figure 22. Replaceable Parts

Automotive Multimeter Service and Parts 65 Table 11. Accessories Item Description 80BK Integrated Temperature Probe (included) 80AK Thermocouple Adapter AC280 Sure Grip Clip Hook Clips (included) AC285 Sure Grip Wide-Jaw Alligator Clips AC89 Insulation Piercing Clip PV350 Pressure Vacuum Module RPM8...

Model 88 V Users Manual 66 Specifications General Specifications Maximum Voltage between any Terminal and Earth Ground: ..................................................... 1000 V W Fuse Protection for mA or µ A inputs: ................ 44/100 A, 1000 V FAST Fuse W Fuse Protection for A input: .......

Automotive Multimeter Specifications 67 Size with Holster and Flex-Stand: .............................2.06 in x 3.86 in x 7.93 in (5.2 cm x 9.8 cm x 20.1 cm) Weight: ........................................................................12.5 oz (355 g) Weight with Holster and Flex-Stand: ............

Model 88 V Users Manual 68 Table 13. DC Voltage, Resistance, and Conductance Function Specifications Function Range Resolution Accuracy L 6.000 V 60.00 V 600.0 V 1000 V 0.001 V 0.01 V 0.1 V 1 V ± (0.1 % + 1) ± (0.1 % + 1) ± (0.1 % + 1) ± (0.1 % + 1) F mV 600.0 mV 0.1 mV ± (0.3 % + 1) e nS 600.0 Ω 6....

Automotive Multimeter Specifications 69 Table 15. Current Function Specifications Function Range Resolution Accuracy 1 Burden Voltage (typical) mA \ (45 Hz to 2 kHz) 60.00 mA 400.0 mA 4 6.000 A 10.00 A 2 0.01 mA 0.1 mA 0.001 A 0.01 A ± (1.2 % + 2) 3 ± (1.2 % + 2) 3 ± (1.2 % + 2) 3 ± (1.2 % + 2) 3 1....

Model 88 V Users Manual 70 Table 16. Capacitance and Diode Function Specifications Function Range Resolution Accuracy E 10.00 nF 100.0 nF 1.000 µ F 10.00 µ F 100.0 µ F 9999 µ F 0.01 nF 0. 1 nF 0.001 µ F 0.01 µ F 0.1 µ F 1 µ F ± (1 % + 2) 1 ± (1 % + 2) 1 ± (1 % + 2) ± (1 % + 2) ± (1 % + 2) ± (1 % + 2...

Automotive Multimeter Specifications 71 Table 17. Frequency Counter Specifications Function Range Resolution Accuracy Pulse Width Range (ms) 1 Resolution (ms) Frequency 2 (0.5 Hz to 200 kHz, pulse width > 2 µ s) 199.99 1999.9 19.999 kHz 199.99 kHz > 200 kHz 0.01 Hz 0.1 Hz 0.001 kHz0.01 kHz 0.1...

Model 88 V Users Manual 72 Table 18. Frequency Counter Sensitivity and Trigger Levels Minimum Sensitivity Input Range 1 5 Hz - 20 kHz 0.5 Hz - 200 kHz Approximate Trigger Level (DC Voltage Function) 600 mV dc 600 mV ac 6 V 60 V 600 V 1000 V 70 mV (to 400 Hz) 150 mV 0.3 V 3 V 30 V 100 V 70 mV (to 400...

Automotive Multimeter Specifications 73 Table 19. Electrical Characteristics of the Terminals Function Overload Protection 1 Input Impedance (nominal) Common Mode Rejection Ratio (1 k Ω unbalance) Normal Mode Rejection L 1000 V 10 M Ω < 100 pF > 120 dB at dc, 50 Hz or 60 Hz > 60 dB at 50 Hz...

Model 88 V Users Manual 74 Table 20. Min Max Recording Specifications Nominal Response Accuracy 100 ms to 80 % (dc functions) Specified accuracy ± 12 counts for changes > 200 ms in duration 120 ms to 80 % (ac functions) Specified accuracy ± 40 counts for changes > 350 ms and inputs > 25 % o...