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riešenia na presné meranie™
Elso Philips Service; tel: +421 32 6582410
email: elso@elso.sk; web:
www.elso.sk
P
Read First: Safety Information
To ensure that the meter is used safely, follow these instructions:
• Do not use the meter if the meter or test leads appear damaged, or if
you suspect that the meter is not operating properly.
• Disconnect the live test lead before disconnecting the common test
lead.
• When using the probes, keep your fingers behind the finger guards on
the probes.
• Do not use the Model 12B's Automatic Selection mode to measure
voltages in circuits that could be damaged by this mode's low input
impedance (≅2 kΩ).
• Turn off power to the circuit under test before cutting, desoldering, or
breaking the circuit. Small amounts of current can be dangerous.
• Do not apply more than 600V rms between a meter terminal and earth
ground.
• Use caution when working with voltages above 60V dc or 30V ac rms.
Such voltages pose a shock hazard.
To avoid false readings, which could lead to possible electric shock
or personal injury, replace the battery as soon as the battery
indicator (U) appears.
PN 602000 June 1996 Rev.3, 1/99
© 1996,1998,1999 Fluke Corporation, All rights reserved. Printed in U.S.A.
Instruction Sheet
W
Warning
12B/18
M u l t i M e t e r
®
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Table of Contents
Related Manuals for Fluke 12B/18
Summary of Contents for Fluke 12B/18
- Page 1 To avoid false readings, which could lead to possible electric shock or personal injury, replace the battery as soon as the battery indicator (U) appears. PN 602000 June 1996 Rev.3, 1/99 © 1996,1998,1999 Fluke Corporation, All rights reserved. Printed in U.S.A.
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Page 2: Automatic Range Selection
riešenia na presné meranie http://www.elso.sk Symbols RANGE Press button. Press button to switch between modes. Double insulation. Not applicable to identified model. Manual ranging mode. ag14i.eps Automatic Range Selection The meter defaults to autoranging when you turn it on. Manual Range Selection RANGE RANGE To return to autoranging, press... -
Page 3: Dc And Ac Voltage
riešenia na presné meranie http://www.elso.sk DC and AC Voltage For Model 12B, refer also to Automatic Selection. Volts dc Volts ac Input Impedance ≅10 MΩ Input Impedance ≅5 MΩ 600V 600V ag01i.eps Continuity and Resistance For Model 12B, refer also to Automatic Selection. Continuity Resistance 12B Only... -
Page 4: Diode Test
riešenia na presné meranie http://www.elso.sk Diode Test Good Diode Typical voltage for silicon diode 12B Only LOW IMPEDANCE AUTOMATIC SELECTION LOW IMPEDANCE LOW IMPEDANCE AUTOMATIC AUTOMATIC SELECTION SELECTION CAT III CAT III 600V 600V Single beep ag03i.eps Forward Bias Reverse Bias Bad Diode 12B Only LOW IMPEDANCE... - Page 5 Fluke authorized resellers shall extend this warranty on new and unused products to end-user customers only but have no authority to extend a greater or different warranty on behalf of Fluke. Warranty support is available if product is purchased through a Fluke authorized sales outlet or Buyer has paid the applicable international price.
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Page 6: Disabling The Beeper
riešenia na presné meranie http://www.elso.sk Continuity Capture™ (Open/Short Capture on Model 18) To set up the meter to capture intermittent shorts and opens, turn the switch to J, connect the leads to the circuit; then press ag12i.eps Captures transitions longer than 250 µS. Transitions after the first transition cause the meter to beep, but the display does not change. - Page 7 riešenia na presné meranie http://www.elso.sk µF MIN MAX (Records the lowest and highest measurements) Automatic Selection (12B only), autoranging, and standby are disabled. Put the meter in the proper range before entering MIN MAX. When the reading changes more than about 50 digits, the meter gives a short beep.
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Page 8: Min Max With Elapsed Time
riešenia na presné meranie http://www.elso.sk µF MIN MAX with Elapsed Time Records the hours and minutes between when MIN MAX was entered and the last high and low was recorded. OL is displayed for times longer than 99:59. To enable the MIN MAX timer, hold down while turning the rotary switch from OFF to either measurement mode. - Page 9 riešenia na presné meranie http://www.elso.sk Capacitance Turn off circuit power; then disconnect and discharge the capacitor before measuring capacitance. µ If the capacitor requires more discharging, diSC is displayed while the capacitor discharges. 12B Only LOW IMPEDANCE LOW IMPEDANCE AUTOMATIC AUTOMATIC SELECTION CAT III...
- Page 10 riešenia na presné meranie http://www.elso.sk µF Automatic Selection (12B only) If a dc or ac voltage greater than about 4.5V is present across the inputs when you are attempting to measure continuity or resistance, the meter switches to dc or ac voltage mode. Warning Repetitive transients on a dc bus will cause CHEK to...
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Page 11: Maintenance
riešenia na presné meranie http://www.elso.sk Maintenance Clean the case with a damp cloth and detergent. Do not use abrasives or solvents. Battery Replacement Remove the test leads before disassembling the case. ag13i.eps... - Page 12 Test Lead Replacement Replace the test leads with Fluke TL-75 PN 855705 double-insulated leads. Service and Parts This meter should be serviced only by a qualified service technician. To contact Fluke, call one of the following telephone numbers:...
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Page 13: Specifications
riešenia na presné meranie http://www.elso.sk Specifications Maximum Voltage 600V rms Between any Terminal and Earth Ground Display 3 3/4-digits, 4000 counts, updates 4/sec Operating Temperature -10°C to 50°C (14°F to 122°F) Storage Temperature -30°C to 60°C (-22°F to 140°F) indefinitely (to -40°C (-40°F) for 100 hrs) Temperature Coefficient 0.1 x (specified accuracy)/°C (<18°C or >28°C;... - Page 14 riešenia na presné meranie http://www.elso.sk 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.
- Page 15 riešenia na presné meranie http://www.elso.sk Function Overload Input Impedance (Nominal) Protection 600V rms >5 MΩ <100 pF Automatic Selection and LoZ = >2 kΩ <200 pF (ac coupled) 600V rms >10MΩ <100 pF Automatic Selection and LoZ = >2 kΩ <200 pF Common Mode Normal Mode...
- Page 16 riešenia na presné meranie http://www.elso.sk MIN MAX Recording Accuracy and Response Time Specified accuracy of the measurement function ±12 digits for changes >200 ms in duration (±40 digits in ac). Typical 100 ms response to 80%. MIN MAX Recording with Elapsed Time Elapsed Time Resolution Accuracy...