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USER'S MANUAL

BM821s, BM822s, BM827s, BM829s
BM521s, BM525s

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Summary of Contents for BM521s

Page 1: ...USER S MANUAL BM821s BM822s BM827s BM829s BM521s BM525s ...

Page 2: ...o Category IV 1000 Volts AC DC Terminals to COM measurement category V mA A A Category IV 1000 Volts AC DC Per IEC61010 1 2nd Ed 2001 Measurement Category Measurement Category IV CAT IV is for measurements performed at the source of the low voltage installation Examples are electricity meters and measurements on primary overcurrent protection devices and ripple control units Measurement Category I...

Page 3: ... the open circuit voltage is above the protection fuse voltage rating Suspected open circuit voltage should be checked with voltage functions Never attempt a voltage measurement with the test lead inserted into the A mA or A input jack Only replace the blown fuse with the proper rating as specified in this manual Only use the test lead provided with the equipment or UL Listed Probe Assembly rated ...

Page 4: ...s excellent in detecting faulty contacts identifying potentiometer clicks and indicating signal spikes during adjustments 1 4 digits 9999 counts dual displays 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 Common Ground reference Input Jack for all functions 6 Input Jack for all functi...

Page 5: ...average to RMS values True RMS True RMS is a term which identifies a DMM that responds accurately to the effective RMS value regardless of the waveforms such as square sawtooth triangle pulse trains spikes as well as distorted waveforms with the presence of harmonics Harmonics may cause 1 Overheated transformers generators and motors to burn out faster than normal 2 Circuit breakers to trip premat...

Page 6: ...gnal but a resistance below 60M is present the meter displays the resistance value When below Audible Threshold is present the meter further gives a continuity beep tone When a signal above the threshold of 1 5V DC or 3V AC up to the rated 1000V is present the meter displays the voltage value in appropriate DC or AC whichever larger in peak magnitude Note Range Lock and Function Lock Feature When ...

Page 7: ...ptly from initial 3kΩ to a few hundred kΩ s on high voltage hard signals LoZ displays on the LCD to remind the users of being in such low impedance mode Peak initial load current while probing 1000VAC for example can be up to 471mA 1000V x 1 414 3kΩ decreasing abruptly to approx 3 1mA 1000V x 1 414 460kΩ within a fraction of a second Do not use AutoCheckTM mode on circuits that could be damaged by...

Page 8: ...ill be saved as power up default for repeat measurement convenience Manual trigger level selection on Hz reading is not available DC ACV ACV Models 525s 521s 829s only DCV DCV 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 Models 525s 521s 829s DCmV DCmV ACmV DC ACmV A...

Page 9: ... Hz dBm Hz Model 829s only Hz ACmV 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 ...

Page 10: ...p tone indicates a complete wire 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 Temperature functions Models 525s 521s 829s 827s only Press SELECT button momentarily to toggle between C and F readings For Dual Channel...

Page 11: ...y to select the subject functions in sequence Last selection will be saved as power up default for repeat measurement convenience CAUTION Discharge capacitors before making any measurement Large value capacitors should be discharged through an appropriate resistance load ...

Page 12: ...ly higher than the phase to earth voltage To avoid exceeding the voltage rating of the protection fuse s accidentally always consider the phase to phase voltage as the working voltage for the protection fuse s Electric Field EF Detection Models 829s 827s only At any function press the EF button for one second or more to toggle to EF Detection feature The meter displays E F when it is ready Signal ...

Page 13: ...d or more to exit MAX MIN AVG recording mode Auto ranging remains and Auto Power Off is disabled automatically in this mode AVG reading is not available to models 525s 521s 1ms CREST capture mode Models 525s 521s 829s 827s only Press CREST button momentarily to activate CREST Instantaneous Peak Hold mode to capture voltage or current signal duration as short as 1ms The LCD C MAX turn on The meter ...

Page 14: ... ranges Press and hold the button for 1 second or more to resume auto ranging Note Manual ranging feature is not available in Hz function Set Beeper Off Press the RANGE button while turning the meter on to temporarily disable the Beeper feature Turn the rotary switch OFF and then back on to resume Auto Power off APO The Auto Power off APO mode turns the meter off automatically to extend battery li...

Page 15: ...tion turns on Lo bat symbol stays with the last logged data as a reminder The meter supports multi session data logging Multiple functions can be logged one at a time into the meter free memory up to 999 separate session pages without erasing the formerly logged one s Press the Start button for 1 second or more to start the data logging mode LEFt displays momentarily followed by a number mini main...

Page 16: ...tarted displaying only the swinging pointer Press the SELECT button momentarily can resume real time display In case of low battery the meter will stop logging automotically For long term logging it is recommended to replace with a new battery before starting logging 3 Recall logged data Press the Up arrow and Down arrow buttons simultaneously to enter the Recall mode The last session page number ...

Page 17: ...uivalent Calibration Periodic calibration at intervals of one year is recommended to maintain meter accuracy Accuracy is specified for a period of one year after calibration If self diagnostic message rE O is being displayed while powering on the meter is re organizing internal parameters Do not switch off the meter and it will be back to normal measurement shortly However if self diagnostic messa...

Page 18: ...lightning or switching surge to the system by accident or abnormal conditions of operation the series fusible resistors will be blown off become high impedance like fuses to protect the user and the instrument Most measuring functions through this terminal will then be open circuit The series fusible resistors and the spark gaps should then be replaced by qualified technician Refer to the LIMITED ...

Page 19: ...tic Update Rate Digital Display 5 per second nominal 41 Segments Bar graph 60 per second max Low Battery Below approx 7V Operating Temperature 0oC to 45oC Relative Humidity Maximum relative humidity 80 for temperature up to 31oC decreasing linearly to 50 relative humidity at 45oC Pollution degree 2 Storage Temperature 20oC to 60oC 80 R H with battery removed Altitude Operating below 2000m Temperat...

Page 20: ...mA typical APO Timing Idle for 30 minutes APO Consumption 50 A typical Dimension L208mm X W103mm X H64 5mm with holster Weight 635 gm with holster Accessories Test lead pair battery installed user s manual BKP60 banana plug type K thermocouple Models 829s 827s 521s 525s only Optional purchase accessories USB interface kit BU 86X BKB32 banana plug to type K socket plug adaptor Electrical Specificat...

Page 21: ...dBm to 54 25dBm Accuracy 0 25dB 2d 40Hz 20kHz Input Impedance 10M 50pF nominal Selectable reference impedance of 4 8 16 32 50 75 93 110 125 135 150 200 250 300 500 600 800 900 1000 1200 AutoCheckTM DCV RANGE Accuracy 9 999V 99 99V 999 9V 0 5 3d Lo Z DCV Threshold 1 5VDC or 1 0VDC nominal Lo Z DCV Input Impedance Initially approx 3 0k 165pF nominal Impedance increases abruptly within a fraction of ...

Page 22: ...M 0 8 3d 60 00M 1 2 0 5d 1 Temperature Coefficient 0 6 x specified accuracy oC 0oC 18oC or 28oC 45oC Open Circuit Voltage 1 2VDC 1 0VDC for 60M range Audible Continuity Tester Audible threshold between 20 and 300 Response time 100 s Capacitance RANGE Accuracy1 60 00nF 600 0nF 0 8 3d 6 000 F 1 0 3d 60 00 F 2 0 3d 600 0 F 2 3 5 5d 6 000mF 2 5 0 5d 25 00mF 2 6 5 5d 1 Accuracies with film capacitor or...

Page 23: ...10kHz 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 Indication Bar graph segments audible beep tones proportional to the field strength Detection Frequency 50 60Hz Detection Antenna Top end of the meter Probe Contact EF Detection For more precise indication of live wires...

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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