B&K PRECISION BM257 Документация онлайн

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• Bm257 bm255 bm252 bm251 general specification 1
• Electrical specification 1
• Hz 1 00 mhz 1

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BM257 BM255 BM252 BM251 GENERAL SPECIFICATION Display 3 5 6 digits 6 000 counts Update Rate 5 per second nominal 24 Segments Bar graph 40 per second max Operating Temperature QC to 40 C Relative Humidity Maximum relative humidity 80 for temperature up to 31 C decreasing linearly to 50 relative humidity at 4iyc Altitude Operating below 2000m Storage Temperature 2O C 60 C 80 R H with battery removed Temperature Coefficient Nominal 0 15 x specified accuracy C 0 C 18 C or 28 C 40 C or otherwise specified Sensing BM251 BM252 BM255 Average sensing BM257 True RMS sensing Pollution Degree 2 Safety Double insulation per IEC61010 1 2nd Ed EN61010 1 2nd Ed UL61010 1 2nd Ed CAN CSA C22 2 No 61010 1 0 92 to Category I11000V CAT III 600V and CAT IV 300V AC DC Transient Protection 6 5kV 1 2 50ps surge Power Supply 1 5V AAA Size battery X 2 Terminals to COM Measurement Category V Category II1000V CAT III 600V and CAT IV 300V AC DC mApA Category III 500Vac and 300Vdc A Category III 600Vac and 300Vdc E M C Meets EN61326 1 2006 EN55022 EN61O00 3 2 EN610O0 3 3 EN61000 4 2 EN61000 4 3 EN610O0 4 4 EN61000 4 5 EN61000 4 6 EN610O0 4 8 EN61000 4 11 In an RF field of 3V m Capacitance function is not specified Other function ranges Total Accuracy Specified Accuracy 100 digits Performance above 3Wm is not specified Power Consumption typical 3 5mA APO Consumption typical 10pA APO Timing Idle for 34 minutes Dimension 16f80 50mm L WH With Holster Weight Approx 340 gm With Holster Special Features AutoCheck V 2 BM255 BM257 only Auto ranging MAX MIN Record BM255 BM257 only Crest mode Peak Hold BM255 BM257 only Backlighted display BM255 BM257 only Auto ranging Zero Relative mode Display Hold EF Detection NCV Interlace capabilities with PC computer Input warning detection Accessories Test lead pair Batteries installed User s manual BKP60 banana plug type K thermocouple BM252 BM255 BM257 only Overload Protection uA mA 0 63A 500Vac IR 150kA 500Vac A 10A 6O0Vac or15A 600Vac IR 100kA 600Vac V 1050 Vrms 1450 Vpeak AutoCheck mV OHM others 600 Vrms Low Battery Below approx 2 3V Optional purchase accessories BRUA 20X USB interface kit BMH 01 Magnetic hanger BKB32 banana plug to type K socket plug adaptor Electrical Specification Accuracy is given as of reading digits number of digits or otherwise specified 23 C 5 C and less than 75 R H True RMS model BM257 ACV ACA accuracies are specified from 5 to 10O of range or otherwise specified Maximum Crest Factor 3 1 at full scale 6 1 at half scale and with frequency components fall within the meter specified frequency bandwidth for non sinusoidal waveforms AutuCheckn 0HM BM255 A BM257 only AC Voltage RANGE Accuracy 50Hz 400Hz Logic Level Hz mV function RANGE 1_____________________________ Accuracy 00 0QQ 6Q O0MQ eO OOmV 600 0mV 1 0 5d 6 000V 60 00V 6O0 0V 1000V CMRR 60dB DC to 60Hz Rs 1ki2 Input Impedance 10MQ 50 pF nominal 1 2 10d Open Circuit Voltage 0 45VDC typical AutoCheck OHM Threshold 10ML2 nominal Accuracy 50Hz 60Hz 1 000V 1D00V AutoCheck Lo Z ACV Threshold IV nominal AutoCheck Lo Z ACV Input Impedance Initially approx 2 5kil 120pF nominal Impedance increases abruptly within a fraction of a second as display voltage is above 50V typical Ended up impedances vs display voltages typically are 15kQ 100V 100kil 300V 250kil 600V 375kQ 1000V M Diode Tester 1 000V 5 00 Hz 1 000 MHz 5 Vpeak Accuracy 0 03 2d Function RANGE______________________________ Accuracy 1 4 5d Sensitivity square wave 3 Vpeak Hz Line ACV DCV Current AutoCheck 0 Audible Continuity Tester Audible Threshold Between 10 2 and 80 2 Response time 32ms AutoCheck ACV BM255 BM257 only RANGE RANGE 5 00 HZ 500 0 kHz 1 0 t3d Test Current 0 56mA typically Open Circuit Voltage 1 8VDC typically 4b Capacitance BM252 BM255 BM257 only RANGE Accuracy 60 00nF 600 0nF 2 0 5d 6 000jiF ÔO OOpF 600 OpF 1 5 5d 3000pF 2 0 5d Sensitivity Sine RMS Range 6V 0 4V 10Hz 10kHz 60V 4V 10Hz 50kHz 600V 40V 10Hz 50kHz 1000V 400V 45Hz 1kHz 600pA 40pA 10Hz 10kHz 6000pA 400pA 10Hz 10kHz 60mA 4 mA 10Hz 10kHz 600mA 40mA 10Hz 10kHz 6A 1A 10Hz 1kHz 10A 6A 10Hz 1kHz Accuracy 0 03 3d Non Contact EF Detection Accuracies with film capacitor or better Typical Voltage DC Voltage RANGE 60 00mV 600 0mV 6 000V 60 00V 6O0 0V 1000V Temperature BM252 BM255 BM257 only Accuracy 0 2 3d RANGE Accuracy 50 C 1000 C 0 3 3d 58 F 1832 F 0 3 6d К type thermocouple range accuracy not included NMRR 60dB 50Hz 60Hz CMRR 100dB DC 50Hz 60Hz Rs 1kn Input Impedance 10Mii 50 pF nominal Bar Graph Indication 20V tolerance 10V 36V 55V tolerance 23V 83V 110V tolerance 59V 165 V 220V tolerance 124V 330V 440V tolerance 250V 1000V DC Current RANGE Accuracy 600 0 iA 6000MA AutoCheck _DCV BM255 BM257 only RANGE_____________________________ Accuracy 60 00mA 600 0mA 1 000V 100OV 6 00OA 08 0OA 1 3 13d AutoCheck Lo Z DC V Threshold 1 OVDC 1 0VDC nominal AutoCheck Lo Z DCV Input Impedance Initially approx 2 5kn 120pF nominal Impedance increases abruptly within a fraction of a second as display voltage is above 50V typical Ended up impedances vs display voltages typically are 15kn 100V 100k i 300V 250k i 6O0V 375KO 1000V Burden Voltage 0 10mV uA 0 5 3d 1 7 mV mA 0 02V A 8A continuous 8A to 15A for 30 sec max with 5 minutes cool down interval AC Current RANGE Accuracy I Burden Voltage 50HZ 400Hz бОО ОцА 6000 60 00mA 600 0mA 0 10mV uA 1 0 3d 6 00OA 08 0OA 1 7 mV mA 0 02V A 8A continuous 8A to 15A for 30 sec max with 5 minutes cool down interval OHM CREST Mode BM255 BM257 only BRIGHT PEOPLE S CHOICE BRYMEN TECHNOLOGY CORPORATION RANGE Accuracy 600 0 2 6 000KÍ2 60 00КГ2 600 0KÍ2 0 5 4d Accuracy Specified accuracy plus 150 digits for changes 5ms in duration TEL 8862 2226 3396 rep 6 000M 2 0 7 4d RECORD Mode BM255 BM257 only Copyright MMVIII B TC All rights reserved 6O 00MQ 1 2 4d Accuracy Specified accuracy plus 100 digits tor changes 100ms in duration Specifications subject to change without notice Open Circuit Voltage 0 45VDC typical indication Bar graph segments audible beep tones proportional to the field strength Detection Frequency 50 6OH2 Detection Antenna Top right end of the meter Probe Contact EF Detection For more precise indication ot live wires such as distinguishing between live and ground connections use the Red test probe for direct contact measurements http www brymen com FAX 886 2 2225 0025 Patents pending Printed in Taiwan