Fluke 21 User's Manual
Contents
1. 3111 1 EN 61326 1 1997 1 CE Function Range Accuracy V 3 200 V 32 00 V 320 0 V 0 3 1 600 V 21 75 1000 V 23 77 0 4 1 mV 320 0 mV 0 3 1 V 45 to 500 Hz 3 200 V 32 00 V 320 0 V 2 2 3 2 V range Other 600 V 21 75 1000 V 23 77 2 2 ranges 45 to 1 kHz 0 21 75 320 000 0 5 2 3200 Q 32 00 kQ 0 5 1 320 0 kQ 3 200 MQ 0 5 1 32 00 MQ 2 1 23 77 320 0 Q 0 5 3 3200 Q 32 00 kQ 0 5 1 320 0 kQ 3 200 MQ 0 5 1 32 00 MQ 2 1 gt n 2 0 V 1 typical Function Range Accuracy Burden Voltage typical A 45 Hz 32 00 mA 320 0 mA 2 5 2 6 mV mA to 1 kHz 10 00 A 2 5 2 50 mV A A 32 00 mA 320 0 mA 1 5 2 6 mV mA 10 00 A 1 5 2 50 mV A 10 Acontinuous 20 A for 30 seconds maximum Overload protection for all functions and ranges Rated voltage Function Input Impedance Nominal V mV V gt 10 MQ lt 50 pF Common Mode Normal Mode Rejection Rejection Ratio 1 kQ Unbalanced gt 120 dB at dc 50 Hz or 60 Hz Open Circuit Test Full Scale Voltage Voltage gt 60 dB at 50 Hz or 60 Hz To 3 2 MQ 32 MQ lt 3 1 V de 440 mV dc 1 4 V dc 2 8 V dc typical 420 mV dc 1 3 V dc typical typical Full Scale Voltage gt 1 lt 3 1 V do 2 0 V dc Short Circuit Current typical 21 75 23 77 Q 400 pA 300 yA gt ull 500 pA 400 pA gt Ve Current2. typical 21 75 23 77 0 0 V 0 5 mA 0 4 mA 0 6 V 0 4 mA 0 3 mA 1 2V 0 3 mA 0 2 mA 2 0 V 0 1 mA 0 1 mA
3. C Voltage Y Y mV Volts AC Volts DC Millivolts DC hc3f eps Resistance 0 Turn off the power and discharge all capacitors An external voltage across a component will give invalid resistance readings hc7f eps Diode Test Good Diode Good Diode Forward Biasd Single Beep Reverse Bias Bad Diode Bad Diode Open pl Shorted hc5f eps Continuity Test hc8f eps If continuity exists resistance lt 210 for Models 21 75 and lt 270 Q for Models 23 77 the beeper sounds continuously The meter beeps twice if it is in Touch Holde mode Current A A A Warning To avoid injury do not attempt a current measurement if the open circuit voltage exceeds 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 the circuit For circuits of more than 10 amps use a current clamp Put the meter in series with the circuit as shown and turn power on hc10f eps Probe Holder hc14f eps Maintenance A 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 contamination or static damage do not touch the circuit board without proper static p
4. FLUKE 17 73 23 21 Series Ill Multimeter Instruction Sheet A Read First Safety Information e Never use the meter if the meter or test leads look damaged e Be sure the test leads and switch are in the correct position for the desired measurement Never measure resistance in a circuit when power is applied e Never touch the probes to a voltage source when the test leads are plugged into the 10 A or 300 mA input jack e Never apply more than the rated voltage between any input jack and earth ground e Be careful when working with voltages above 60 V dc or 30 V ac rms Such voltages pose a shock hazard e Keep your fingers behind the finger guards on the test probes when making measurements N Warning To avoid false readings which could lead to possible electric shock or personal injury replace the battery as soon as the battery indicator EM appears Symbols A Read First Safety Information 4 Dangerous Voltage May Be Present a Double Insulation Overvoltage Installation Category per IEC 1010 CAT Il Typical locations include main wall outlets local appliances and portable equipment CAT Ill Typical locations include switches in the fixed installation and equipment for industrial use permanently connected to the fixed installation PN 650512 August 1997 Rev 2 7 98 1997 1998 Fluke Corporation All rights reserved Printed in U S A All product names are trademarks of their respective companies Input Jack
5. east significant digits Maximum Voltage Between Rated voltage any Terminal and Earth Ground Display Digital 3 200 counts updates 2 5 sec Analog 31 segments updates 25 sec Response Time of Digital Vac lt 2s Display Vde lt 1s Q lt 1s to 320 kQ lt 2s to 3 2 MQ lt 10s to 32 MQ Operating Temperature 0 C to 50 C Storage Temperature 40 C to 60 C Temperature Coefficient 0 1 x specified accuracy C lt 18 C or gt 28 C Electromagnetic Compatibility In RF field of 3 V m on all functions Relative Humidity except 32 MQ range 32 MA range only Altitude Battery Type Battery Life Continuity Beeper Shock Vibration Size H x W x L Weight Safety EMC Regulations Certifications Listings TOV PRODUCT SERVICE gm Sicherheit Total accuracy Specified accuracy 0 1 of range 0 to 90 0 C to 35 C 0 to 70 35 C to 50 C 0 to 80 0 C to 35 C 0 to 70 35 C to 50 C Operating 2000 meters Storage 12 000 meters 9 V NEDA 1604 or 6F22 or 006P or NEDA 1604A or 6LR61 2000 hrs typical with alkaline 1600 hrs typical with carbon zinc 4096 Hz per MIL T PRF 28800F Class III Sinusoidal Non Operating 3 7 cm x 8 9 7 8 cm x 19 cm 1 5 in x 3 5 3 1 in x 7 49 in 365 g 12 9 oz Models 21 75 Series Ill 600 V CAT III Models 23 77 Series Ill 600 V CAT III and 1000 V CAT II per ANSI ISA S82 01 1994 EN 61010 1 1993 CSA C22 2 No 1010 1 92 UL
6. rotection Internal Fuse Test 10A 4 8 Q OK 50 OK ot 89 L E EY hc9f eps Battery Replacement Note Before opening the case make sure the test leads are removed and the rotary switch is turned to OFF hc12f eps hc13f eps Cleaning To clean the meter use a damp cloth and mild detergent do not use abrasives or solvents on the meter Service and Parts To contact Fluke call one of the following telephone numbers USA and Canada 1 888 99 FLUKE 1 888 993 5853 Europe 31 402 678 200 Japan 81 3 3434 0181 Singapore 65 276 6196 Anywhere in the world 1 425 356 5500 Or visit Fluke s Web site a Item Description Fluke Quan PN BT1 Battery 9 V NEDA 1604 IEC 6F22 or 696534 1 NEDA 1604A IEC 6LR61 614487 Models 21 75 F1 Fuse F630 mA 250 V Min Interrupt 740670 1 Rating 1500 A or IEC 127 1 F2 Fuse F11 A 1000 VAC DC 943118 1 Min Interrupt Rating 17 kA Models 23 77 F1 Fuse F44 100 A 1000 VAC DC 943121 1 Min Interrupt Rating 10 kA F2 Fuse F11 A 1000 VAC DC 943118 1 Min Interrupt Rating 17 kA For safety use exact replacement Specifications Accuracy is specified for a period of one year after calibration at 18 C to 28 C 64 F to 82 F with relative humidity to 90 AC conversions are ac coupled average responding and calibrated to the RMS value of a sine wave input Accuracy specifications are given as of reading number of l
7. s Miliamp volts Ohms x pr A Diode Test A oly 1000V CATH Amp c Common x Jma FUSED Mas T Terminal hc1f eps See Specifications for overload protection Autorange The meter defaults to autorange when you turn on the meter Manual Range Manual ranging is available in V ac V dc ohms A ac and A dc MANUAL S E M SR a Yn nn nnn nnn m n abt LI Lf META AAA A No A Momentary he11f eps To return to autorange press for 1 second or turn the rotary switch Automatic Touch Hold Mode A Warning To avoid electric shock do not use the Touch Holde mode to determine if a circuit with high voltage is dead The Touch Holde mode will not capture unstable or noisy readings The Touch Holde mode automatically captures and displays stable readings for all functions Momentary hc4f eps When the meter captures new input it beeps and a new reading is displayed Note Stray voltages can produce a new reading To exit the Touch Holde mode press momentarily or turn the rotary switch Bar Graph The bar graph shows readings relative to the full scale value of the displayed measurement range and indicates polarity hc15f eps Standby If the meter is on but is inactive for an hour 20 minutes in diode test the display goes blank and displays four bar graph segments To resume operation turn the rotary switch or press a button AC and D
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