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USER'S
MANUAL

BM236R
BM237R
BM239R

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Summary of Contents for BM236R

Page 1: ...USER S MANUAL BM236R BM237R BM239R ...

Page 2: ...ts of safe access of the hand held parts during measurements Inspect lead wires connectors and probes for damaged insulation or exposed metal before using the meter If any defects are found replace them immediately Only use the probe assembly provided with the meter or a UL Listed Probe Assembly to the same meter ratings or better IEC 61010 031 requires exposed conductive test probe tips to be 4mm...

Page 3: ...asurement Category III is applicable to test and measuring circuits connected to the distribution part of the building s low voltage MAINS installation Examples are measurements on distribution boards including secondary meters circuit breakers wiring including cables bus bars junction boxes switches socket outlets in the fixed installation and equipment for industrial use and some other equipment...

Page 4: ...1 3 5 6 digits 6000 counts LCD display 2 Push buttons for special functions features 3 Selector to turn the Power On or Off and Select a function 4 Input Jack for 10A 20A for 30sec current function 5 Input Jack for all functions EXCEPT 10A current function 6 Common Ground reference Input Jack for all functions 7 Additional input Jack for Phase Rotation function only ...

Page 5: ...mal 2 Circuit breakers to trip prematurely 3 Fuses to blow 4 Neutrals to overheat due to the triplen harmonics present on the neutral 5 Bus bars and electrical panels to vibrate Crest Factor Crest Factor is the ratio of the Crest instantaneous peak value to the True RMS value and is commonly used to define the dynamic range of a True RMS DMM A pure sinusoidal waveform has a Crest Factor of 1 414 A...

Page 6: ... DC or AC whichever larger in peak magnitude Note Ghost voltage Buster Ghost voltages are unwanted stray signals coupled from adjacent hard signals which confuse common multimeter voltage measurements The AutoV mode provides low ramp up input impedance approx 2 1kΩ at low voltage to drain ghost voltages leaving mainly hard signal values on meter readings It is an invaluable feature for precise ind...

Page 7: ...ts that could be damaged by such low input impedance Instead use rotary selector or high input impedance voltage modes to minimize loading for such circuits ACV DCV VFD ACV functions Press the SELECT button momentarily to select the subject functions in sequence Last selection will be saved as power up default for repeat measurement convenience Note VFD ACV and the associated Hz are equipped with ...

Page 8: ...ing the Hz readings Press momentarily the RANGE button can manually select another trigger voltage range not available to current ranges It is recommended to first measure the signal voltage or current level and activate Hz function in that range to get the most appropriate trigger level If the Hz reading becomes unstable select lower sensitivity to avoid electrical noise If the reading shows zero...

Page 9: ...8 ...

Page 10: ...ny other readings indicate the diode is resistive or shorted defective CAUTION Using resistance and continuity function in a live circuit will produce false results and may damage the instrument In many cases the suspected component must be disconnected from the circuit to obtain an accurate reading CAUTION Discharge capacitors before making any measurement Large value capacitors should be dischar...

Page 11: ...10 A Current function Models 237R 239R only Press SELECT button momentarily to toggle between DC and AC Last selection will be saved as power up default for repeat measurement convenience ...

Page 12: ...cations Flame signal current check should indicate steady flame signal of at least 2 A for a rectification type or 1 5 A for an ultraviolet type 8 A for self checking systems If a flame signal current with inadequate strength or fluctuation beyond 10 check the following to avoid the risk of unwanted flame relay dropout For gas or oil flames Minipeeper Low supply voltage Detector location Defective...

Page 13: ...plays EF H when it is ready If it is too sensitive for your applications press Level button momentarily toggles to lower sensitivity EF L The detected Electric Field strength is indicated as a series of bar graph segments on the display plus variable beep tones Non Contact EF Detection An antenna is located along the top left end of the meter which detects electric field surrounding energized live...

Page 14: ...ments Press SELECT button momentarily toggles between and modes Last selection will be saved as power up default for repeat measurement convenience Hi sensitivity mode which detects relatively low signal outputs generated from motor spinning for checking phase connections of Motors Normal sensitivity mode for identifying phase sequence of Electricity Supply ...

Page 15: ...r are L1 L2 and L3 also known as R S and T respectively If the meter indicates a counter clockwise movement swap any two connects between the meter and phases Then retest Connect the above mentioned L1 L2 and L3 of a Motor and that of the MAINS respectively should be able to get a clockwise motor movement Using the Complementary Beeper feature The Complementary Beeper feature is selected in Power ...

Page 16: ... due to improper connections to the A mA or A input jacks when another function especially a voltage function is selected Intelligent Auto Power Off APO The Auto Power off APO mode turns the meter off automatically to extend battery life after approximately 32 minutes of no specified activities where applicable 1 Rotary switch or push button operations 2 Significant measuring readings of above 8 5...

Page 17: ...escribed in this user s manual Battery use 1 5V AAA Size battery x 2 Fuse use Fuse F2 for A current input 11A 1000V DC AC IR 20kA F fuse or better Dimension 10 x 38mm Battery and Fuse replacement Loosen the screw from the access cover of the case bottom Lift the access cover Replace the batteries or fuse Re fasten the screw GENERAL SPECIFICATION Display 3 5 6 digits 6 000 counts Update Rate 5 per ...

Page 18: ...ed Accuracy Performance above 3V m is not specified Overload Protection A 11A 1000V DC AC rms IR 20kA F fuse or better V AutoV L3 1100V DC AC rms mV Ohm others 1000V DC AC rms Low Battery Below approx 2 5V Power Supply 1 5V AAA Size battery X 2 Power Consumption typical 3 2mA APO Consumption typical 10 A APO Timing Idle for 30 minutes Dimension 161 80 50mm L W H With Holster Weight Approx 334 gm W...

Page 19: ... 0 3d Input Impedance 10M 54pF nominal 1 5d non zero residue may appear when backlight is on which will not affect the specified measuring range and accuracy ACmV RANGE Accuracy 10Hz 500Hz 60 00mV 1 2 600 0mV 3 1 0 3d 500Hz 800Hz 60 00mV 1 2 600 0mV 3 2 0 3d Input Impedance 10M 54pF nominal 1 5d non zero residue may appear when backlight is on which will not affect the specified measuring range an...

Page 20: ...input 50Vac typical from quiescence 8M 5 6Vac 22k 7Vac 12k 8Vac 2 6k 50Vac At direct input 50V typical from quiescence Initial impedance is approximately 2 3k Impedance increases abruptly within a fraction of a second as display voltage hard signal is much higher than 50V typical End up impedances vs display voltages typically are 12k 100V 100k 300V 240k 600V 580k 1000V AutoV_DCV RANGE Accuracy 1 ...

Page 21: ...1000V Ohm RANGE 1 Accuracy 600 0 6 000k 0 3 3d 60 00k 600 0k 0 5 3d 6 000M 2 60 00M 3 0 9 3d 4 1 Open Circuit Voltage 1 6VDC typical 2 Constant Test Current 0 2 A Typical 3 Constant Test Current 0 02 A Typical 4 5 20d 30M BeepLit Continuity Tester Continuity Threshold Between 30 and 480 Continuity ON Response Time 15ms Audible Indication Beep sound Visible Indication LCD Backlight Capacitance Mode...

Page 22: ... 04V A 1 10A continuous 10A to 20A for 30 seconds max with 5 minutes cool down interval 2 5d non zero residue may appear when backlight is on which will not affect the specified measuring range and accuracy Temperature Model 239R only RANGE Accuracy 1 2 40 0 oC 99 9oC 1 1 oC 100 oC 400oC 40 0 oF 99 9 oF 1 2 oF 100 oF 752 oF 1 Accuracies assume meter interior and the ambient have reached the same t...

Page 23: ...20V 10V 38V 80V 32V 142V 40V 21V 79V 160V 63V 285V 80V 40V 156V 300V 105V 608V 160V 80V 500V 300V Indication Bar graph segments audible beep tones proportional to the field strength Detection Frequency 50 60Hz Detection Antenna Top left end of the meter Probe Contact EF Detection For more precise indication of live wires such as distinguishing between live and ground connections use direct contact...

Page 24: ...epaid to BRYMEN TECHNOLOGY CORPORATION BRYMEN assumes no risk for damage in transit BRYMEN will at its option repair or replace the defective product free of charge However if BRYMEN determines that the failure was caused by misused altered neglected or damaged by accident or abnormal conditions of operation or handling you will be billed for the repair THIS WARRANTY IS EXCLUSIVE AND IS IN LIEU OF...

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