User manual FLUKE 80 V

[. . . ] 99 Washington Street Melrose, MA 02176 Phone 781-665-1400 Toll Free 1-800-517-8431 Visit us at www. TestEquipmentDepot. com ® 80 Series V Multimeters Users Manual May 2004 Rev. 1, 8/04 2004 Fluke Corporation, All rights reserved. All product names are trademarks of their respective companies. Table of Contents Title Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Contacting Fluke . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] The test leads can add 0. 1 to 0. 2 of error to resistance measurements. To test the leads, touch the probe tips together and read the resistance of the leads. If necessary, you can use the relative (REL) mode to automatically subtract this value. The resistance function can produce enough voltage to forward-bias silicon diode or transistor junctions, causing them to conduct. If this is suspected, press C to apply a lower current in the next higher range. If the value is higher, use the higher value. Refer to Table 18. · 18 Making Measurements In-Circuit Resistance Measurements Circuit Power 87 V TRUE RMS MULTIMETER Isolating a Potentiometer OFF 1 32 Disconnect °C/°F MIN MAX Peak MIN MAX REL Hz % RANGE AutoHOLD 4½ DIGITS 1 Second mV V mA A 1 3 A 2 LO V OFF Isolating a Resistor mA A COM V A 10A MAX FUSED 400mA FUSED Disconnect aom6f. eps Figure 5. Measuring Resistance 19 80 Series V 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 Meter's 60 nS range measures conductance in nanosiemens (1 nS = 0. 000000001 Siemens). Because such small amounts of conductance correspond to extremely high resistance, the nS range lets you determine the resistance of components up to 100, 000 M, 1/1 nS = 1, 000 M. To measure conductance, set up the Meter as shown for measuring resistance (Figure 5); then press Cuntil the nS indicator appears on the display. The following are some tips for measuring conductance: · High-resistance readings are susceptible to electrical noise. To smooth out most noisy readings, enter the MIN MAX recording mode; then step to the average (AVG) reading. There is normally a residual conductance reading with the test leads open. To ensure accurate readings, use the relative (REL) mode to subtract the residual value. · 20 Making Measurements Measuring Capacitance WCaution 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 capacitor is discharged. The Meter's capacitance ranges are 10. 00 nF, 100. 0 nF, 1. 000 µF, 10. 00 µF, 100. 0 µF, and 9999 µF. To measure capacitance, set up the Meter as shown in Figure 6. To improve the accuracy of measurements less than 1000 nF, use the relative (REL) mode to subtract the residual capacitance of the Meter and leads. Select Capacitance 4½ DIGITS 1 Second 87 V TRUE RMS MULTIMETER °C/°F MIN MAX Peak MIN MAX REL Hz % RANGE AutoHOLD mV V mA A LO V OFF A A mA A COM V 10A MAX FUSED 400mA FUSED Note If too much electrical charge is present on the capacitor being tested, the display shows "diSC". + + + + + + + + + aom10f. eps Figure 6. Measuring Capacitance 21 80 Series V Users Manual Testing Diodes WCaution 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. This function tests a semiconductor junction by sending a current through the junction, then measuring the junction's voltage drop. [. . . ] Add 0. 5 % of reading when measuring above 30 M in the 50 M range, and 20 counts below 33 nS in the 60 nS range. 46 Specifications Table 13. Temperature Specifications (87 Only) Temperature -200 °C to +1090 °C -328 °F to +1994 °F 0. 1 °C 0. 1 °F Resolution 1 % + 10 1 % + 18 Accuracy1, 2 1. Does not include error of the thermocouple probe. Accuracy specification assumes ambient temperature stable to ± 1 °C. [. . . ]