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Summary of Contents for Brymen BM079
- Page 1 USER'S MANUAL BM079 & BM078 DC+AC BM077 DC/AC BM076, BM073 & BM072 AC Clamp-on Multimeter Series...
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Page 2: Terms In This Manual
1) SAFETY This manual contains information and warnings that must be followed for operating the instrument safely and maintaining the instrument in a safe operating condition. If the instrument is used in a manner not specified by the manufacturer, the protection provided by the instrument may be impaired. -
Page 3: International Electrical Symbols
with voltages above 60 VDC or 30 VAC rms. These voltage levels pose a potential shock hazard to the user. Before and after hazardous voltage measurements, test the voltage function on a known source such as line voltage to determine proper meter functioning. - Page 4 1) Antenna area for Non-Contact EF-Detection 2) Jaw center indicator (with DCA polarity for Models 079, 078 & 077), at where best current accuracy is specified 3) Rotary Selector to turn the power ON/OFF and Select a function 4) 3-5/6 digits 6000 counts numeric LCD display 5) Additional input Jack for Phase Rotation function only...
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Page 5: Operation
4) OPERATION WARNING: Before and after hazardous voltage measurements, test the voltage function on a known source such as line voltage to determine proper meter functioning. ACV, DCV, DC+ACV (Models 078 & 079 only), Line-level Hz, & EF (NCV) functions Inputs, other than that of EF as described below, are made through the test lead terminals COM/+. - Page 6 Electric Field EF-Detection The meter displays “EF” when it is ready. Signal strength is indicated as a series of bar-graph segments on the display together with variable beep tones. ●Non-Contact EF-Detection: An antenna is located along the top-right end of the stationary clamp jaw, which detects electric field surrounds energized conductors.
- Page 7 CAUTION & WARNING for Non-Invasive (Clamp-on) Current Measurements: CAUTION (Application and Removal of the Clamp-on Jaws) For non-invasive current measurements, press the jaw trigger and clamp the jaws around conductor(s) of only one single pole of a circuit for load current measurement. Make sure the jaws are completely closed, or else it will introduce measurement errors.
- Page 8 Non-Invasive AmpTip Low-Current Functions: ACA, DCA (Models 079, 078 & 077 only), DC+ACA (Models 079 & 078 only), & Hz Input is made via the clamp jaws with best accuracy specified near the jaw tip area for small conductors low-current measurements. Defaults at ACA function. Press SELECT button momentarily to select the subject functions in sequence.
- Page 9 Non-Invasive Regular Current Funtions: ACA, DCA (Models 079, 078 & 077 only), DC+ACA (Models 079 & 078 only), & Hz Input is made via the clamp jaws with best accuracy specified at the jaw center for regular current measurements. Press SELECT button momentarily to select the subject functions in sequence.
- Page 10 Ω Ω Ω Ω Resistance, Continuity, & Diode functions Inputs are made through the test lead terminals COM/+. Defaults at Ω Ω Ω Ω Resistance. Press SELECT button momentarily to select the subject functions in sequence. Note When using Diode test function, normal forward voltage drop (forward biased) for a good silicon diode is between 0.400V to 0.900V.
- Page 11 Capacitance (Models 079, 078, 076 & 073 only), & Temperature (Models 079 & 076 only) functions Inputs are made through the test lead terminals COM/+. Defaults at Capacitance. Press SELECT button momentarily to select C (Celsius) or F (Fahrenheit) in sequence.
- Page 12 2. When using Capacitance function, discharge capacitor(s) before making any measurements. Large value capacitors should be discharged through an appropriate resistance load DCµ µ µ µ A Current function (Models 079 & 076 only) Inputs are made through the test lead terminals COM/+. Application notes: The DCµ...
- Page 13 & 3-Phase Rotation function (Models 079 & 076 only) Inputs are made through the test lead terminals L1/L2/L3. Phase Rotation directions are indicated as symbolic movements by the LCD segments. Defaults at . Press SELECT button momentarily toggles between modes. Hi-sensitivity mode, which detects relatively low signal outputs generated from motor spinning, for checking phase connections of Motors.
- Page 14 Using the Hi-sensitivity mode for Motors: Connect to the Motor as illustrated. Be sure the electricity supply is removed. From the perspective of looking down the shaft of the motor, speed-spin it clockwise to generate sufficient signal strength for proper meter detection. If the meter indicates a clockwise movement, the motor leads connected to L1, L2 and L3 of the meter are L1, L2 and L3 (also known as R, S and T), respectively.
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Page 15: Maintenance Warning
ZERO (HOLD) button for one second or more to toggle Relative-Zero mode. DC-Zero mode is set instead of Relative-Zero mode, however, to only offset the non- zero DCA residuals caused by magnetic hysteresis of the jaws as in DCA & DC+ACA functions. - Page 16 Trouble Shooting If the instrument fails to operate, check batteries and test leads etc., and replace as necessary. Double check operating procedure as described in this user’s manual. If the instrument voltage-resistance input terminal has subjected to high voltage transient (caused by lightning or switching surge to the system under test) by accident or abnormal conditions of operation, the protective impedance components in series might be blown off (become high impedance) like open fuses to protect the user and the instrument.
- Page 17 GENERAL SPECIFICATIONS Display: 3-5/6 digits 6000 counts. Polarity: Automatic Update Rate: 5 per second nominal; Operating Temperature: 0°C to 40°C Relative Humidity: Maximum relative humidity 80% for temperature up to 31°C decreasing linearly to 50% relative humidity at 40°C Pollution degree: 2 Storage Temperature: -20°C to 60°C, <...
- Page 18 Transient Protection: 6.0kV (1.2/50µs surge) Overload Protections: Current & Hz functions via jaws: 600ADC/AAC rms at <400Hz Voltage & 3-Phase Rotation functions via terminals: 660VDC / 920VAC rms Other functions via terminals: 600VDC/VAC rms E.M.C.: Meets EN61326-1:2006 (EN55022, EN61000-3-2, EN61000-3-3, EN61000-4- 2, EN61000-4-3, EN61000-4-4, , EN61000-4-5, EN61000-4-6, EN61000-4-8, EN61000-4-11): DCA and DC+ACA Functions, in an RF field of 1V/m:...
- Page 19 Electrical Specifications Accuracy is ±(% reading digits + number of digits) or otherwise specified, at 23°C ± 5°C. Maximum Crest Factor < 2.5 : 1 at full scale & < 5 : 1 at half scale or otherwise specified, and with frequency spectrum not exceeding the specified frequency bandwidth for non-sinusoidal waveforms.
- Page 20 Capacitance (Models 079, 078, 076 & 073 only) RANGE Accuracy 2.0% + 4d 200.0µF, 2500µF Accuracies with film capacitor or better Diode Tester RANGE Accuracy 2.000V 1.5% + 5d Test Current: 0.3mA typically Open Circuit Voltage: < 3.5VDC typically DCµ µ µ µ A (Models 079 & 076 only) RANGE Accuracy Burden Voltage...
- Page 21 AmpTip clamp-on DCA (Models 079, 078 & 077 only) RANGE Accuracy 1) 2) 3) 60.00A 2.0% + 5d Induced error from adjacent current-carrying conductor: <0.01A/A Specified with DC-Zero mode applied to offset the non-zero residual readings, if any Add 10d to the specified accuracy @ < 4A AmpTip clamp-on DC+ACA (Models 079 &...
- Page 22 Regular Clamp-on DCA (Models 079, 078 & 077 only) RANGE Accuracy 1) 2) 60.00A , 600.0A 2.0% + 5d Induced error from adjacent current-carrying conductor: <0.01A/A Specified with DC-Zero mode applied to offset the non-zero residual readings, if any Add 10d to the specified accuracy @ < 9A Regular Clamp-on DC+ACA (Models 079 &...
- Page 23 Non-Contact EF-Detection Typical Voltage Bar-Graph Indication 20V (tolerance: 10V ~ 36V) 55V (tolerance: 23V ~ 83V) 110V (tolerance: 59V ~ 165V) - - - 220V (tolerance: 124V ~ 330V) - - - - 440V (tolerance: 250V ~ 600V) - - - - - Indication: Bar-graph segments &...
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Page 24: Limited Warranty
BRYMEN's warranty does not apply to accessories, fuses, fusible resistors, spark gaps, varistors, batteries or any product which, in BRYMEN's opinion, has been misused, altered, neglected, or damaged by accident or abnormal conditions of operation or handling.
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