Fluke 28IIEx User Manual
Page 1
All product names are subject to change without notice. All rights reserved. Users Manual 28 II Ex True-rms Digital Multimeter November 2011 © 2011 Fluke Corporation. Specifications are trademarks of their respective companies.
All product names are subject to change without notice. All rights reserved. Users Manual 28 II Ex True-rms Digital Multimeter November 2011 © 2011 Fluke Corporation. Specifications are trademarks of their respective companies.
Fluke 28IIEx User Manual
Page 11
... dangerous consequences If you use the Product. Read the entire Users Manual before using the Product. The 28 II Ex Digital Multimeter (the Product) is designed for electrical and electronic circuits. How to operate measurement tool for operation in potentially explosive areas of... the following telephone numbers: • Technical Support USA: 1-800-44-FLUKE (1-800443-5853) • Calibration/Repair USA: 1-888-99-FLUKE (1-888993-5853) • Canada: 1-800-36-FLUKE (1-800-363-5853) • Europe: +31 402-675-200 • Japan: +81-3-6714-3114...
... dangerous consequences If you use the Product. Read the entire Users Manual before using the Product. The 28 II Ex Digital Multimeter (the Product) is designed for electrical and electronic circuits. How to operate measurement tool for operation in potentially explosive areas of... the following telephone numbers: • Technical Support USA: 1-800-44-FLUKE (1-800443-5853) • Calibration/Repair USA: 1-888-99-FLUKE (1-888993-5853) • Canada: 1-800-36-FLUKE (1-800-363-5853) • Europe: +31 402-675-200 • Japan: +81-3-6714-3114...
Fluke 28IIEx User Manual
Page 13
... not use the Product on intrinsically safe connections that go into zone 0 or 20 are permitted if the connection values are met. True-rms Digital Multimeter EX Safety Information • After you take spare batteries into Ex-hazardous areas. • Use only type-approved batteries in an Ex-hazardous area. •...
... not use the Product on intrinsically safe connections that go into zone 0 or 20 are permitted if the connection values are met. True-rms Digital Multimeter EX Safety Information • After you take spare batteries into Ex-hazardous areas. • Use only type-approved batteries in an Ex-hazardous area. •...
Fluke 28IIEx User Manual
Page 15
.... • Do not use the Product if it operates incorrectly. • Do not use and disable the Product if it is damaged. 5 True-rms Digital Multimeter EX Safety Information • Connect the common test lead before the live test lead and remove the live test lead before the common test lead...
.... • Do not use the Product if it operates incorrectly. • Do not use and disable the Product if it is damaged. 5 True-rms Digital Multimeter EX Safety Information • Connect the common test lead before the live test lead and remove the live test lead before the common test lead...
Fluke 28IIEx User Manual
Page 17
... LR03. measurement input Ii = 5 A: U0 = 0 V C0 = 1000 μF I0 = 9.7 μA L0 = 1000 mH P0 = 0 mWH Ui = 65 V Ci = negligible Ii = 5 A Li = negligible True-rms Digital Multimeter EX Safety Information mA/μA Jack U0 = 1.94 V Ui = 65 V C0 = 1000 μF Ci = negligible I0 = 9.7 μA Ii = Internally limited by a 440 mA fuse L0...
... LR03. measurement input Ii = 5 A: U0 = 0 V C0 = 1000 μF I0 = 9.7 μA L0 = 1000 mH P0 = 0 mWH Ui = 65 V Ci = negligible Ii = 5 A Li = negligible True-rms Digital Multimeter EX Safety Information mA/μA Jack U0 = 1.94 V Ui = 65 V C0 = 1000 μF Ci = negligible I0 = 9.7 μA Ii = Internally limited by a 440 mA fuse L0...
Fluke 28IIEx User Manual
Page 19
... duty cycle. Input for all measurements. 9 Return terminal for voltage, continuity, resistance, diode, capacitance, frequency, temperature, and duty cycle measurements. Table 2. Inputs 1 True-rms Digital Multimeter Features 2 Item 3 4 Terminal A COM Description grt01.eps Input for 0 A to 10.00 A current (10 A to 400 mA current measurements (600 mA for 30...
... duty cycle. Input for all measurements. 9 Return terminal for voltage, continuity, resistance, diode, capacitance, frequency, temperature, and duty cycle measurements. Table 2. Inputs 1 True-rms Digital Multimeter Features 2 Item 3 4 Terminal A COM Description grt01.eps Input for 0 A to 10.00 A current (10 A to 400 mA current measurements (600 mA for 30...
Fluke 28IIEx User Manual
Page 21
.... Does not erase recorded values. Button (Yellow) C D Switch Position Any position M Any position MIN MAX recording Frequency counter Table 4. Pushbuttons True-rms Digital Multimeter Features Function Set to capacitance Set to temperature Turn on the display. Sets to autoranging, hold the button down for the set the range for...
.... Does not erase recorded values. Button (Yellow) C D Switch Position Any position M Any position MIN MAX recording Frequency counter Table 4. Pushbuttons True-rms Digital Multimeter Features Function Set to capacitance Set to temperature Turn on the display. Sets to autoranging, hold the button down for the set the range for...
Fluke 28IIEx User Manual
Page 23
... active. Peak Min Max modes and the response time is active. 7 8 9 10 11 12 6 13 5 4 14 3 2 1 17 16 15 Figure 1. True-rms Digital Multimeter Features Number Feature Indication Negative measurement. Appears if the input voltage is less than the stored reference. Display Features grt09.eps Number Feature Indication ...
... active. Peak Min Max modes and the response time is active. 7 8 9 10 11 12 6 13 5 4 14 3 2 1 17 16 15 Figure 1. True-rms Digital Multimeter Features Number Feature Indication Negative measurement. Appears if the input voltage is less than the stored reference. Display Features grt09.eps Number Feature Indication ...
Fluke 28IIEx User Manual
Page 25
... 5. In the capacitance function, too much electrical charge is on the capacitor under test. Have the Product serviced. 0PEn Open thermocouple detected. True-rms Digital Multimeter Features Automatic Power-Off The Product automatically turns off if you from attempting to the terminal being used.
... 5. In the capacitance function, too much electrical charge is on the capacitor under test. Have the Product serviced. 0PEn Open thermocouple detected. True-rms Digital Multimeter Features Automatic Power-Off The Product automatically turns off if you from attempting to the terminal being used.
Fluke 28IIEx User Manual
Page 27
... distorted sine waves and other waveforms (with no dc offset) such as square waves, triangle waves, and staircase waves. How to mV. True-rms Digital Multimeter How to measure ac or dc voltage. Refer to Figure 2 to Make Measurements AC Voltage Switch Box V DC Voltage mV V + grt02.eps Figure...
... distorted sine waves and other waveforms (with no dc offset) such as square waves, triangle waves, and staircase waves. How to mV. True-rms Digital Multimeter How to measure ac or dc voltage. Refer to Figure 2 to Make Measurements AC Voltage Switch Box V DC Voltage mV V + grt02.eps Figure...
Fluke 28IIEx User Manual
Page 29
... 1994 °F. Push to choose Celsius or Fahrenheit. 19 Voltages larger than what is selected, the Product goes to 260 °C. True-rms Digital Multimeter How to Make Measurements W Caution To prevent damage to the Product or other equipment, remember that range, use the low-pass filter when you measure...
... 1994 °F. Push to choose Celsius or Fahrenheit. 19 Voltages larger than what is selected, the Product goes to 260 °C. True-rms Digital Multimeter How to Make Measurements W Caution To prevent damage to the Product or other equipment, remember that range, use the low-pass filter when you measure...
Fluke 28IIEx User Manual
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Activates continuity beeper ON (closed) True-rms Digital Multimeter How to Make Measurements OFF (open) Figure 4. For in-circuit tests, turn circuit power off. Continuity Tests grt03.eps 21
Activates continuity beeper ON (closed) True-rms Digital Multimeter How to Make Measurements OFF (open) Figure 4. For in-circuit tests, turn circuit power off. Continuity Tests grt03.eps 21
Fluke 28IIEx User Manual
Page 33
Resistance Measurements Disconnect grt04.eps 23 In-Circuit Resistance Measurements Circuit Power OFF True-rms Digital Multimeter How to Make Measurements Isolating a Potentiometer 1 3 2 Disconnect 1 2 3 Isolating a Resistor Figure 5.
Resistance Measurements Disconnect grt04.eps 23 In-Circuit Resistance Measurements Circuit Power OFF True-rms Digital Multimeter How to Make Measurements Isolating a Potentiometer 1 3 2 Disconnect 1 2 3 Isolating a Resistor Figure 5.
Fluke 28IIEx User Manual
Page 35
... power and discharge all high-voltage capacitors before you measure capacitance. Use the dc voltage function to Make Measurements Select Capacitance + + Figure 6. True-rms Digital Multimeter How to make sure that the capacitor is discharged. To measure capacitance, set up the Product as shown in Figure 6. Capacitance Measurements WCaution To prevent...
... power and discharge all high-voltage capacitors before you measure capacitance. Use the dc voltage function to Make Measurements Select Capacitance + + Figure 6. True-rms Digital Multimeter How to make sure that the capacitor is discharged. To measure capacitance, set up the Product as shown in Figure 6. Capacitance Measurements WCaution To prevent...
Fluke 28IIEx User Manual
Page 37
Diode Tests grt06.eps 27 Typical Reading Forward Bias + Single Beep Bad Diode Open True-rms Digital Multimeter How to Make Measurements Reverse Bias + Bad Diode Shorted or Figure 7.
Diode Tests grt06.eps 27 Typical Reading Forward Bias + Single Beep Bad Diode Open True-rms Digital Multimeter How to Make Measurements Reverse Bias + Bad Diode Shorted or Figure 7.
Fluke 28IIEx User Manual
Page 39
True-rms Digital Multimeter How to Make Measurements Total Current to connect meter. 1 4 mA A 3 A 2 Circuit Power: OFF to Circuit 5 Current Through One Component Figure 8. OFF to disconnect meter. Current Measurements 5 grt07.eps 29 ON for measurement.
True-rms Digital Multimeter How to Make Measurements Total Current to connect meter. 1 4 mA A 3 A 2 Circuit Power: OFF to Circuit 5 Current Through One Component Figure 8. OFF to disconnect meter. Current Measurements 5 grt07.eps 29 ON for measurement.
Fluke 28IIEx User Manual
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The Product autoranges to Make Measurements Some guidelines for frequency measurements in the display is the correct one of the frequency counter. True-rms Digital Multimeter How to one . 31 For frequencies less than 0.5 Hz, the display can be unstable. Select a higher voltage range to decrease Product sensitivity to a lower range, ...
The Product autoranges to Make Measurements Some guidelines for frequency measurements in the display is the correct one of the frequency counter. True-rms Digital Multimeter How to one . 31 For frequencies less than 0.5 Hz, the display can be unstable. Select a higher voltage range to decrease Product sensitivity to a lower range, ...
Fluke 28IIEx User Manual
Page 43
... cycle (Figure 9). Then push G a second time. To measure duty cycle, set up to change the slope for the counter. As with the True-rms Digital Multimeter How to Make Measurements frequency function, Push E to ten times the amplitude of the selected voltage range.) If a duty cycle measurement is unstable, push MIN...
... cycle (Figure 9). Then push G a second time. To measure duty cycle, set up to change the slope for the counter. As with the True-rms Digital Multimeter How to Make Measurements frequency function, Push E to ten times the amplitude of the selected voltage range.) If a duty cycle measurement is unstable, push MIN...
Fluke 28IIEx User Manual
Page 45
... (AVG) shown in Table 8. Smooth Feature (Power Up Option Only) When the input signal changes quickly, "smoothing" gives a more stable measurement on . True-rms Digital Multimeter MIN MAX Recording Mode Min Max records the signal extremes that are longer than 250 μs. MIN MAX Recording Mode The MIN MAX mode records...
... (AVG) shown in Table 8. Smooth Feature (Power Up Option Only) When the input signal changes quickly, "smoothing" gives a more stable measurement on . True-rms Digital Multimeter MIN MAX Recording Mode Min Max records the signal extremes that are longer than 250 μs. MIN MAX Recording Mode The MIN MAX mode records...
Fluke 28IIEx User Manual
Page 47
When a new, stable measurement is always the difference between the current measurement and the stored reference value. True-rms Digital Multimeter AutoHOLD Mode Relative Mode When you pushed F. In relative mode, the measurement shown is sensed, the Product beeps and shows the new measurement. The AutoHOLD ...
When a new, stable measurement is always the difference between the current measurement and the stored reference value. True-rms Digital Multimeter AutoHOLD Mode Relative Mode When you pushed F. In relative mode, the measurement shown is sensed, the Product beeps and shows the new measurement. The AutoHOLD ...