® 80 Series III Multimeters Users Manual October 1997 Rev.5, 12/03 1997-2003 Fluke Corporation, All rights reserved. All product names are trademarks of their respective companies.
Each Fluke 20, 70, 80, 170 and 180 Series DMM will be free from defects in material and workmanship for its lifetime. As used herein, “lifetime” is defined as seven years after Fluke discontinues manufacturing the product, but the warranty period shall be at least ten years from the date of purchase.
Introduction... 1 Safety Information ... 1 Your Meter’s Features ... 4 Power-Up Options ... 11 Automatic Power-Off... 11 Input Alert™ Feature ... 12 Making Measurements ... 12 Measuring AC and DC Voltage... 12 Testing for Continuity... 14 Measuring Resistance ... 16 Using Conductance for High Resistance or Leakage Tests ...
80 Series III Users Manual Analog Bar Graph ... 28 Model 87 Bar Graph... 28 Models 83 and 85 Bar Graph ... 29 4-1/2 Digit Mode (Model 87) ... 29 MIN MAX Recording Mode ... 30 Touch Hold Relative Mode ... 32 Zoom Mode (Models 83 and 85) ...
Table International Electrical Symbols ... 2 Inputs ... 4 Rotary Switch Positions ... 5 Pushbuttons ... 6 Display Features ... 9 Estimating Capacitance Values Over 5 Microfarads ... 20 Functions and Trigger Levels for Frequency Measurements ... 26 MIN MAX Functions ... 31 Replacement Parts...
Introduction WWarning Read "Safety Information" before you use the meter. Except where noted, the descriptions and instructions in this manual apply to Series III Models 83, 85, 87, and 87/E multimeters. Model 87 is shown in all illustrations. Safety Information This meter complies with: EN61010.1:1993 ANSI/ISA S82.01-1994...
80 Series III Users Manual AC (Alternating Current) DC (Direct Current) AC or DC Refer to the manual for information about this feature. Battery Inspected and licensed by TÜV Product Services. Table 1. International Electrical Symbols Earth ground Fuse Conforms to European Union directives...
Remove test leads from the meter before you open the battery door. 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. Do not use the meter if it operates abnormally.
80 Series III Users Manual To protect yourself, use the following guidelines: Use caution when working with voltages above 30 V ac rms, 42 V ac peak, or 60 V dc. Such voltages pose a shock hazard. When using the probes, keep your fingers behind the finger guards.
Switch Position AC voltage measurement DC voltage measurement 400 mV dc voltage range Continuity test Resistance measurement Capacitance measurement Diode test DC or AC current measurements from 0 mA to 10.00 A DC or AC current measurements from 0 A to 4000 A Table 3.
80 Series III Users Manual Button Function Selects capacitance. mA/A, A Switches between dc and ac current. (Blue button) Power-up Disables automatic power-off feature. Any switch Starts recording of minimum and maximum values. Steps the display through position MIN, MAX, AVG (average), and present readings.
Button Function Any switch Turns the backlight on and off. Model 87: position yellow button For Model 87, hold the yellow button down for one second to enter the 4-1/2 digit mode. To return to the 3-1/2 digit mode, hold the button down Models 83, only until all display segments turn on (about one second).
80 Series III Users Manual 10 1 0 iy1f.eps Figure 1. Display Features (Model 87 Shown)
Number Feature ± Polarity indicator for the analog bar graph. Relative (REL) mode is active. The continuity beeper is on. Indicates negative readings. In relative mode, this sign indicates that the present input is less than the stored reference. The battery is low. to possible electric shock or personal injury, replace the battery as soon as the battery indicator appears.
80 Series III Users Manual Number Feature A, A, mA A: Amperes (amps). The unit of current. A: Microamp. 1 x 10 mA: Milliamp. 1 x 10 V, mV V: Volts. The unit of voltage. mV: Millivolt. 1 x 10 F, nF F: Farad.
Number Feature 4000 mV Displays the currently selected range. Analog bar graph Provides an analog indication of the present inputs. The input (or the relative value when in relative mode) is too large for the selected range. For duty cycle measurements OL is displayed when the input signal stays high or low.
80 Series III Users Manual Input Alert™ Feature If a test lead is plugged into the mA/ A or A terminal, but the rotary switch is not correctly set to the mA/ A or A position, the beeper warns you by making a chirping sound.
The following are some tips for measuring voltage: When you measure voltage, the meter acts approximately like a 10 M (10,000,000 impedance in parallel with the circuit. This loading effect can cause measurement errors in high- impedance circuits. In most cases, the error is negligible (0.1% or less) if the circuit impedance is 10 k (10,000...
80 Series III Users Manual Testing for Continuity 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. Continuity is the presence of a complete path for current flow.
For in-circuit tests, turn circuit power off. Activates TRUE RMS MULTIMETER continuity beeper MIN MAX RANGE HOLD 4 1/2 DIGITS PEAK MIN MAX 1 Seconds 400mA MAX CAT II FUSED 10A MAX 1000V MAX FUSED TRUE RMS MULTIMETER MIN MAX RANGE HOLD 4 1/2 DIGITS...
80 Series III Users Manual Measuring Resistance 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. Resistance is an opposition to current flow. The unit of resistance is the ohm ( ).
In-Circuit Resistance Measurements Circuit Power TRUE RMS MULTIMETER MIN MAX RANGE HOLD PEAK MIN MAX 4 1/2 DIGITS 1 Seconds mA A 400mA MAX CAT II FUSED 10A MAX 1000V MAX FUSED Figure 4. Measuring Resistance Making Measurements Isolating a Potentiometer Disconnect Isolating a Resistor Disconnect...
80 Series III Users Manual Using Conductance for High Resistance or Leakage Tests Conductance, the inverse of resistance, is the ability of a circuit to pass current. High values of conductance correspond to low values of resistance. The unit of conductance is the Siemen (S). The meter’s 40 nS range measures conductance in nanosiemens (1 nS = 0.000000001 Siemens).
The meter measures capacitance by charging the capacitor with a known current for a known period of time, measuring the resulting voltage, then calculating the capacitance. The measurement takes about 1 second per range. The capacitor charge can be up to 1.2 V. The meter’s capacitance ranges are 5 nF, 0.05 F, 0.5 F, and 5 F.
80 Series III Users Manual To estimate capacitance values above 5 F, use the current supplied by the meter’s resistance function, as follows: Set up the meter to measure resistance. Press Kto select a range based on the value of capacitance you expect to measure (refer to Table 6.)
Testing Diodes 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), and other semiconductor devices.
80 Series III Users Manual Measuring AC or DC Current WWarning 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 a measurement.
Circuit Power: TRUE RMS MULTIMETER AC DC MIN MAX RANGE HOLD 4 1/2 DIGITS PEAK MIN MAX 1 Seconds mA A COM V 400mA MAX CAT II FUSED 10A MAX 1000V MAX FUSED OFF to connect meter. ON for measurement. OFF to disconnect meter.
80 Series III Users Manual If you are using the A terminal, set the rotary switch to mA/A. If you are using the mA/ A terminal, set the rotary switch to A for currents below 4000 A (4 mA), or mA/A for currents above 4000 A.
Measuring Frequency Frequency is the number of cycles a signal completes each second. 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 various ranges of the meter’s voltage and current functions.
80 Series III Users Manual Table 7. Functions and Trigger Levels for Frequency Measurements Approximate Function Range Trigger Level 4 V, 40 V, 400 V, 1000 V 400 mV 400 mV 40 mV 1.7 V 40 V 400 V 40 V...
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.
80 Series III Users Manual Determining 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: Measure the signal’s frequency. Press Fa second time to measure the signal’s duty cycle.
Models 83 and 85 Bar Graph The bar graph on Models 83 and 85 consists of 43 segments. The number of lit segments is relative to the full-scale value of the selected range. The polarity indicator at the left of the graph indicates the polarity of the input.
80 Series III Users Manual MIN MAX Recording Mode The MIN MAX mode records minimum and maximum input values. When the inputs go below the recorded minimum value or above the recorded maximum value, the meter beeps and records the new value. This mode...
Button 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.) The meter beeps each time a new minimum or maximum value is recorded.
80 Series III Users Manual ® Touch Hold Mode WWarning The Touch Hold mode will not capture unstable or noisy readings. Do not use Touch Hold mode to determine that circuits are without power. The Touch Hold mode captures the present reading on the display.
Maintenance Repairs or servicing not covered in this manual should be performed only by qualified personnel as described in the 80 Series III Service Manual . General Maintenance Periodically wipe the case with a damp cloth and mild detergent. Do not use abrasives or solvents.
80 Series III Users Manual Testing the Fuses Before measuring current, test the appropriate fuse as shown in Figure 9. If the tests give readings other than those shown, have the meter serviced. WWarning To avoid electrical shock or personal injury, remove the test leads and any input signals before replacing the battery or fuses.
Replacing the Battery Replace the battery with a 9 V battery (NEDA A1604, 6F22, or 006P). Warning To avoid false readings, which could lead to possible electric shock or personal injury, replace the battery as soon as the battery indicator (B) appears. Replace the battery as follows (refer to Figure 10): Turn the rotary switch to OFF and remove the test leads from the terminals.
If the meter fails, check the battery and fuses. Review this manual to verify proper use of the meter. Replacement parts and accessories are shown in Tables 9 and 10 and Figure 11. To contact Fluke, call one of the following telephone numbers: USA: 1-888-99-FLUKE (1-888-993-5853) Canada: 1-800-36-FLUKE (1-800-363-5853)
Service and Parts iy12f.eps Figure 10. Battery and Fuse Replacement...
Fuse, 11 A, 1000 V, FAST Screw, Case Foot, Non-Skid O-Ring, Input Receptacle CD-ROM (contains Users Manual) Getting Started Manual Quick Reference Guide, Fluke 80 Series III Service Manual WTo ensure safety, use exact replacement only. Table 9. Replacement Parts Description Fluke Part...
MP85 MP86 MP92 H5, 6 T24 Test Lead Set AC20 Alligator TP1, TP4 Probes Clip (Black) 87/E Test Lead Set AC70A Alligator Clips Figure 11. Replaceable Parts Service and Parts TL75 Test Lead Set C81Y iy11f.eps...
Specifications Maximum Voltage between any Terminal and Earth Ground: 1000 V rms Fuse Protection for mA or A inputs: 44/100 A, 1000 V FAST Fuse Fuse Protection for A input: 11 A, 1000 V FAST Fuse Display: Digital: 4000 counts updates 4/sec; (Model 87 also has 19,999 counts in 4½-digit mode, updates 1/sec.). Analog: updates 40/sec.
80 Series III Users Manual Table 11. Models 85 and 87 AC Voltage Function Specifications Function Range Resolution 400.0 mV 0.1 mV 4.000 V 0.001 V 40.00 V 0.01 V 400.0 V 0.1 V 1000 V Accuracy is given as ([% of reading] + [number of least significant digits]) at 18°C to 28°C, with relative humidity up to 90%, for a period of one year after calibration.
Table 12. Model 83 AC Voltage Function Specifications Function Range Resolution 400.0 mV 0.1 mV 4.000 V 0.001 V 40.00 V 0.01 V 400.0 V 0.1 V 1000 V See the first sentence in Table 11 for a complete explanation of accuracy. Below a reading of 200 counts, add 10 counts.
80 Series III Users Manual Table 13. DC Voltage, Resistance, and Conductance Function Specifications Function Range 4.000 V 40.00 V 400.0 V 1000 V 400.0 mV 400.0 4.000 k 40.00 k 400.0 k 4.000 M 40.00 M 40.00 nS See the first sentence in Table 11 for a complete explanation of accuracy.
Function Range 40.00 mA 400.0 mA 4000 mA (45 Hz to 2 kHz) 10.00 A 40.00 mA 400.0 mA 4000 mA 10.00 A See the first sentence in Table 11 for a complete explanation of accuracy. AC conversion for Model 83 is ac coupled and calibrated to the rms value of a sinewave input. AC conversions for Models 85 and 87 are ac coupled, true rms responding, and valid from 5% to 100% of range.
80 Series III Users Manual Table 14. Current Function Specifications (continued) Function Range 400.0 A (45 Hz to 2 kHz) 4000 A 400.0 A 4000 A See the first sentence in Table 11 for a complete explanation of accuracy. AC conversion for Model 83 is ac coupled and calibrated to the rms value of a sinewave input.
Table 15. Capacitance and Diode Function Specifications Function Range 5.00 nF 0.0500 F 0.500 F 5.00 F 3.000 V With a film capacitor or better, using Relative mode to zero residual. See the first sentence in Table 11 for a complete explanation of accuracy.
Table 18. Electrical Characteristics of the Terminals Input Overload Impedance Function Protection (nominal) 1000 V rms 10 M <100 pF 1000 V rms 10 M <100 pF 1000 V rms 10 M <100 pF (ac-coupled) Open Circuit Test Voltage 1000 V rms <1.3 V dc 1000 V rms <3.9 V dc...
80 Series III Users Manual Model Nominal Response 100 ms to 80% Specified accuracy 12 counts for changes >200 ms in duration ( 40 counts in ac with beeper on) Same as specified accuracy for changes >2 seconds in duration ( 40 counts in ac with beeper on)