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B&K Precision 325 User Manual

AC/DC True RMS Power Clamp Meter
ELECTRONIC TEST INSTRUMENTS
MODEL 325
CONTENTS
1. FEATURES ................................................ 2
2. Safety precaution ........................................ 2
3. Specifications.............................................. 4
4. Electrical Specifications ................................ 4
800A rms ........................................... 4
800Arms (60 second).............................. 4
DC 500V AC500V rms ............................ 5
600V rms ........................................... 6
DC600V ........................................... 6
AC600V rms.......................................... 6
5. Instrument Description (fig.1)......................... 6
6. Alignment marks ......................................... 8
7. Measurement .............................................. 8
7-3. DC Voltage (DCV) measurement ............. 10
7-4. AC Voltage (ACV) measurement .............. 10
7-5.AC+DC Watt Measurement ...................... 11
7-6.Resistance measurements....................... 11
7-7.Continuity Tests ..................................... 12
7-8.Frequency measurements ....................... 13
7-9.Function key descriptions ........................ 13
? HOLD function.................................... 13
? ZERO relative function......................... 14
? MAX MIN function ............................... 14
? PEAK –H (PEAK HOLD) function........... 15
? AUTO POWER OFF function ................ 16
7-10. Measuring non-sinusoidal quantity ......... 16
? TRUE RMS MEASUREMENT ............... 16
? WAVEFORM COMPARISON ................ 17
? Battery Replacement ........................... 18
? Maintenance and Cautions ................... 19
325
Take extreme care for the following
1. FEATURES
Thank you for purchasing this instrument. Please read this instruction manual carefully and completely before using the digital clamp meter. Correct operation will insure the best performance and decrease the possibility of damages.
2. SAFETY PRECAUTION
conditions while measuring
CAUTION
1. Measuring voltage over 20V as it may cause human body electricity conduction.
2. Measure AC power.
3. Do not measure voltage, current under humid or wet environment.
4. If any unusual condition (such as: breakage, deformation, fracture, foreign substance, no display, etc.) of the test leads end (metal part) and attachment of the meter, please do not conduct any measurement.
5. Do not contact any exposed metal (conductive) parts, such as: end of test lead, jack, fixing object, circuit, etc.
6. Keep you insulated from the object waiting for being measured.
7. Do not operate the meter under the environment with explosive gas (material), combustible gas (material) steam or filled with dust.
EN -2
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8. In order to avoid reading incorrect data, replace the battery immediately when the symbol “
” appears
on the LCD.
9. In order to avoid the damage caused by contamination or static electricity, do not touch the circuit board before you take any adequate action.
10. Operating Environment: Indoors use. This instrument has been designed for being used in an environment of pollution degree 2.
11. Operation Altitude: Up to 2000M .
12. Operating Temperature & Humidity: 5 ? ~ 40 ? ,below 80%RH.
13. Storage Temperature & Humidity: -10? ~ 60? , below 70%RH.
14. Fingers should hold under the protection guard of test probe.
15. Category: EN 61010-1(2001) and EN 61010-2- 032(2002) CAT ? 600V & CAT ? 1000V
16.SYMBOLS DESCRIPTION
DC Voltag e or Current AC Voltage or Current DC/AC Voltage or Current Ground Meter Double insulated
Caution Danger high voltage: risk of electric shock Application around and removal from
hazardous live conductors is permitted
EN -3
325
3. SPECIFICATIONS
1. Display: 3 3/4 digits LCD with max . reading 3999, plus decimal point, unit symbol indication.
2. Overload Indication: LCD will show “OL” in the left highest position.
3. Low Battery Indication: Replace battery immediately when LCD displays “
”.
4. Sampling Rate: 2 times per second for digital display.
5. Power Supply: 9V NEDA 1604 IEC 6F22 JIS 006P battery x 1pc.
6. Battery Life: About 200 hours.
7. Jaws opening: Max. 36 mm.
8. Conductor size: Max. 35mm.
9. Dimension: 218mm(L)x75mm(W)x43mm(H).
10.Weight: About 375g. (Including battery)
11.Accessories: Test Leads? m anual? carrying case ? battery.
4. ELECTRICAL SPECIFICATIONS
Accuracy: ±(..%rdg…dgt)at 23? ±5?, below 80? RH DCA
Range Resolution Accuracy Overload Protection
400A 0.1A 600A 1A
ACA
Range Resolution
400A 0.1A 600A 1A
± (1.5%+5) ± (2.0%+5)
Accuracy
50Hz~60 Hz
± (2.0%+5) ± (2.5%+5)
800A rms
(60 second)
Overload Protection
800Arms
(60 second)
EN -4
AC CURRENT (TRUE RMS:From 10% to 100% of
Max. Open
range)
Range Resolution
400A 0.1A ± (2.0%+5) ± (3.0%+8) 600A 1A ± (2.0%+5) ± (3.0%+8)
Accuracy
40Hz~65Hz 65Hz~1kHz
Overload Protection
800A rms
(60 second)
CURRENT 1 mS PEAK HOLD
Range Resolution Accuracy
400A 0.1A ± (1.5%+15) 600A 1A ± (2.5%+15)
Overload Protection
600V rms
DC VOLTAGE
Range Resolution Accuracy Overload Protection
400V 0.1V 600V 1V
± (1.0%+3)
600V rms
AC VOLTAGE (TRUE RMS:From 10% to 100% of range)
Range Resolution
400V 0.1V 600V 1V
Input Impedance : 10MΩ// less than 100Pf.Crest factor : >3 :1.
Accuracy Overload Protection
40Hz~400Hz
± (1.2%+5)
400Hz~2kHz
± (2.0%+5)
600V rms
VOLTAGE 1 mS PEAK HOLD
Range Resolution
400V 0.1V ± (1.5%+15) 600V 1V ± (2.5%+15)
Accuracy Overload Protection
600V rms
AC+DC WATT
Range Resolution
40KW 0.01KW ± (5.0+5)
400KW 0.1KW ± (5.0+5)
Accuracy Frequency Overload Protection
0~1KHz 600V rms
Continuity Test
Range Resolution Buzzer
1Ω Lower 400Ω
Max. Open
Voltage
About 1.2V
Overload Protection
DC 500V AC500V rms
RESISTANCE
Range Resolution Accuracy
Voltage
Overload Protection
EN -5
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4000Ω 1Ω
± (1.0%+3) 0.4VDC
600V rms
Frequency Test
Range Resolution Accuracy
4KHZ 1HZ
40KHZ
400KHZ 100HZ
10HZ
± (0.5%+3)
Max.
Sensibility Overload Protection
5Vrms
DC600V
AC600V rms
5. INSTRUMENT DESCRIPTION (fig.1)
1. Inductive clamp jaw.
2. Safety guard.
3. HOLD button
4. Rotary switch Selector.
5. MAX/MIN key.
6. LCD
7. V/OJack
8. COM Jack
9. PEAK-H
10. ZERO button.
11. Jaw Trigger.
EN -6
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