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70/73 English Instruction Sheet
Page 1
®
70/73
Series III Multimeter
Instruction Sheet
W Read First: Safety Information
To ensure that the meter is used safely, follow these instructions:
• Never use the meter if the meter or test leads look damaged.
• Be sure the test leads and rotary switch are in the correct
position for the desired measurement.
• Never measure resistance in a circuit when power is applied.
• Never touch the probes to a voltage source when the test
leads are plugged into the
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70/73 English Instruction Sheet Page 2 Input Jacks Amps Volts, Ohms, Diode Test V 10A 70 ! 600V 300 COM mA FUSED 70 Common Terminal Milliamps hr2f.eps See Specifications for overload protection. Pushbutton Use the pushbutton to either select a fixed range or put the meter in the Automatic Touch Hold mode. Autorange The meter defaults to autorange when first turned on. Manual Range Manual ranging is available in V ac, V dc, ohms, A ac, and A dc. Momentary V _ + hr14f.eps To return to autorange,
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70/73 English Instruction Sheet Page 3 Automatic Touch Hold Mode W Warning To avoid electric shock, do not use the Touch Hold to determine if a circuit with high voltage is dead. The Touch Hold mode will not capture unstable or noisy readings. The Touch Hold mode automatically captures and displays stable readings. Press R for 2 seconds while turning the meter on. H V DC V DC V DC V V V 2 seconds _ _ _ + + single beep hr3f.eps When the meter captures a new input, it beeps and a new reading
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70/73 English Instruction Sheet Page 4 Standby If the meter is on but is inactive for an hour (20 minutes in diode test), the screen goes blank and displays selected bar graph segments. To resume operation, turn the rotary switch or press R. AC and DC Voltage (K L L) m Volts AC Volts DC Millivolts DC V AC V DC V V V mV _ _ _ + + + hr4f.eps Resistance (e) Turn off the power and discharge all capacitors. An external voltage across a component will give invalid resistance readings. k _ + hr6f.eps
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70/73 English Instruction Sheet Page 5 Diode Test (G) Good Diode Good Diode _ _ + + Single Beep Forward Bias Reverse Bias Bad Diode Bad Diode _ _ + + or Open Shorted hr7f.eps
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70/73 English Instruction Sheet Page 6 Continuity Test ( R ) _ _ + + hr5f.eps If continuity exists (resistance < 210 Ω), the beeper sounds continuously. The meter beeps twice if it is in the Touch Hold mode. Current (? A) W Warning To avoid injury, do not attempt a current measurement if the open circuit voltage is above the rated voltage of the meter. To avoid blowing an input fuse, use the 10 A jack until you are sure that the current is less than 300 mA. Turn off power to the circuit. Break
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70/73 English Instruction Sheet Page 7 Holster The snap-on holster absorbs shocks and protects the meter and comes with a Flex-Stand . To protect the front of the meter, put the meter face down in the holster. hr15f.eps Maintenance W Warning To avoid electric shock, remove the test leads before opening the case, and close the case before using the meter. To prevent fire and possible arc- flash, use fuses with ratings shown on the back of the meter. Caution To avoid damaging meter components, li
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70/73 English Instruction Sheet Page 8 Internal Fuse Test 70 10 A 300 mA 5-8 Ω OK <0.5 Ω OK OK OK hr10f.eps Battery and Fuse Replacement Note Before opening the case, make sure the test leads are removed and the rotary switch is turned to OFF. 70 F1 F2 hr11f.eps
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70/73 English Instruction Sheet Page 9 Cleaning To clean the meter, use a damp cloth and mild detergent; do not use abrasives or solvents on the meter. Service and Parts For service information in the U.S.A. and Canada, call 1-800-44- FLUKE (1-800-443-5853), in Europe, 31 40 267 8200, from other countries, 1-425-356-5500. Item Description Fluke Quan. PN BT1 Battery, 9 V, NEDA 1604/IEC 6F22, or 696534 1 NEDA 1604A/IEC 6LR61 614487 F1* Fuse, F630 mA, 250 V, Min Interrupt 740670 1 Rating 1500 A, I
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70/73 English Instruction Sheet Page 10 Electromagnetic Compatibility Total accuracy = Specified accuracy in RF field of 3 V/m on all plus +2.0% of range for all functions functions except MΩ except: 320.0 mV range: total accuracy = specified accuracy + 1.0% of range 320.0Ω range: total accuracy = specified accuracy + 8% of range Relative Humidity except 32 MΩ Range: 0% to 90% (0°C to 35°C) 0% to 70% (35°C to 50°C) 32 MΩ Range only: 0% to 80% (0°C to 35°C) 0% to 70% (35°C to 50°C) Altitude Opera
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70/73 English Instruction Sheet Page 11 Function Range Accuracy 3.200 V, 32.00 V, 320.0 V ±(0.3%+1) 0L 600 V ±(0.4%+1) 320.0 mV ±(0.3%+1) L m K (45 to 500 Hz, 3.2V 3.200 V, 32.00 V, ±(2%+2) range. Other ranges 45 320.0 V, 600 V ±(2%+2) to 1 kHz) e 320.0 Ω ±(0.5%+2) 3200 Ω, 32.00 kΩ, ±(0.5%+1) 320.0 kΩ, 3.200 MΩ ±(0.5%+1) 32.00 MΩ ±(2%+1) G R 2.0 V ±(1% typical) Function Range Accuracy Typical Burden Voltage ? (45 Hz to 32.00 mA, 320.0 mA ±(2.5%+2) 6 mV/mA 1 kHz) 10.00 A * ±(2.5%+2) 50 mV/A (73 o
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70/73 English Instruction Sheet Page 12 Overload protection for all functions and ranges: 600 V. Function Input Impedance (Nominal) >10 MΩ, <50 pF L, L, K m Common Mode Normal Mode Rejection Ratio (1 Rejection kΩ Unbalanced) >120 dB at dc, 50 Hz, >60 dB at 50 Hz or 60 Hz L, L m or 60 Hz >60 dB dc to 60 Hz K Open Circuit Test Full Scale Voltage Voltage To 3.2 MΩ 32 MΩ <3.1 V dc <440 mV dc <1.4 V dc e <2.8 V dc (typical) <420 mV dc <1.3 V dc (typical) (typical) <3.1 V dc 2.0 V dc G R Typical Short
