USER`S MANUAL
Contents
1. MAX 400A 600V CATIE MAXG A HOLD MAX 400A 600V CAT IL Ax O 300V CAT IL l HOLD Com 600VCATID MAX 300V CAT II A USER S MANUAL BM111 BM112 Single Display BM125 BM126 Twin Displays BRYMEN Versatile Clamp on Multimeter Series BRIGHT PEOPLE S CHOICE L MAX COM soovcari R2 P11 2 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 The meter meets the requirements for double insulation to IEC61010 2 032 1994 EN61010 2 032 1995 UL3111 2 032 1999 BM125 amp BM126 Category III 600 Volts ac and de BM111 amp BM112 Category II 600 Volts ac and dc Category III 300 Volts ac and dc PER IEC61010 OVERVOLTAGE INSTALLATION CATEGORY OVERVOLTAGE CATEGORY II Equipment of OVERVOLTAGE CATEGORY II is energy consuming equipment to be supplied from the fixed installation Note Examples include household office and laboratory appliances OVERVOLTAGE CATEGORY III Equipment of OVERVOLTAGE CATEGORY III is equipment in fixed installations Note Examples include switches in the fixed installation and some equipment for industrial use with permanent connection to the fixed installation OVERVOLTAGE CATEGORY IV Equi2. TAIWAN
3. ways sone Max Mi V CATT MAX NIL OV CATIN HoD Soov o D 300V CATIT HOLD ON SS DC Voltage AC Voltage Hz Frequency functions Inputs are made through the test leads terminals Slide switch on defaults at DC voltage Press SELECT button momentarily to select AC voltage Press the Hz push button momentarily to activate Hz Frequency function in the following slide switch functions BM111 amp BM112 DCV amp ACV via the test leads ACA via the clamp jaw BM125 DCV ACV DCA amp ACA via the test leads BM126 DCV amp ACV via the test leads Note DC 400 0mV range is designed with 1000MQ high input impedance for least current drain in measuring small signals and can cope better with most commercially available voltage output transducers adapters The non zero display reading is normal R2 P11 6 when the meter inputs are open circuit which will not affect actual measurement accuracy The meter will show close to zero reading when the inputs are shorted Open input is actually a floating condition which is not a zero volt input condition Note Hz input sensitivity varies automatically with function range selected while activating the Hz function Lowest range has the highest sensitivity and the highest range has the lowest sensitivity Activating the Hz function WHILE measuring the specific function signal auto ranging can automatically select the best sensitivity range to avoid electrical noise which may cause unstable Hz r
4. A mode allows the user to offset the meter consecutive measurements with the displaying reading as the reference value The display will now show readings relative to the stored reference value That is display reading stored value Press the A button momentarily to activate and to exit relative zero mode Auto ranging Where there is more than one measuring range under a selected meter function the LCD annunciator a turns on The meter will automatically switch to the best resolution range when making measurements No manual ranging selection is required Auto Power Off APO When the meter is on the Auto Power Off APO feature will switch the meter into a sleep mode automatically to extend battery life after approximately 30 minutes of no Slide switch nor push button operations To wake up the meter from APO press the buttons momentarily or set the slide switch to the OFF position and then slide back on again Always set the slide switch to the OFF position manually when the meter is not in use 5 MAINTENANCE WARNING To avoid electrical shock disconnect the meter from any circuit remove the test leads from the input jacks and turn OFF the meter before opening the case Do not operate with open case 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 inpu
5. eading However if the Hz reading shows zero due to insufficient sensitivity activate the Hz function BEFORE measuring the specific function signal the meter is then in the lowest range can select the highest sensitivity range 400A CATI Ax 600V CATT CATE 2 Mi MAX HOLD 300VCATE HoD om A O M AX ov OV 60 30 A po AX 400A 600V CAT I fH 300VCATE HoD R2 P11 7 CAUTION Using Resistance Continuity Diode or Capacitance 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 measurement reading Q Resistance and Continuity functions Inputs are made through the test leads terminals Slide switch on defaults at Q Press SELECT button momentarily to select Continuity function which is convenient for checking wiring connections and operation of switches A continuous beep tone indicates a complete wire gt Diode test function Inputs are made through the test leads terminals Slide switch on defaults at Q Press SELECT button momentarily 2 times to select gt Diode test function Normal forward voltage drop forward biased for a good silicon diode is between 0 400V to 0 900V A reading higher than that indicates a leaky diode defective A zero reading indicates a shorted diode defective An OL indicates an open diode defective Reverse the test leads connections re
6. g meter functions INTERNATIONAL ELECTRICAL SYMBOLS Caution Refer to the explanation in this Manual Caution Risk of electric shock Earth Ground Double Insulation or Reinforced insulation Fuse AC Alternating Current DC Direct Current i Otee 2 CENELEC Directives The instruments conform to CENELEC Low voltage directive 73 23 EEC and Electromagnetic compatibility directive 89 336 EEC R2 P11 4 3 PRODUCT DESCRIPTION This user s manual uses only representative model s for illustrations Please refer specification details for function availability to each model 1 Transformer Clamp Jaw for AC 100F01 current magnetic field pick up 2 Hand Finger Barrier to indicate the limits of safe access of the meter during measurement 3 Push buttons for special functions amp features Also as power ON OFF buttons for ACA function in Twin Display models 4 Push buttons for special functions amp features on Slide switch Selector functions 5 Input Jack for all functions EXCEPT non invasive ACA current function 6 Common Ground reference Input Jack for all functions EXCEPT non invasive ACA current function 7 Slide switch Selector to turn the primary display power ON OFF and Select a function 8 3 3 4 digits 4000 counts LCD display Twin Displays models only 9 3 3 4 digits 4000 counts LCD display 10 Jaw trigger for opening the R2 P11 5 transformer clamp jaw 4 OPERATION pu pu MAX 400A
7. lay dropout 1 1 For gas or oil flames Minipeeper Low supply voltage Detector location Defective detector wiring Dirty viewing windows Faulty Minipeeper 1 2 For oil flames Photocell Detector location amp wiring Smoky flame or poorly adjusted air shutter Faulty Photocell Temperature over 165 F 74 C at photocell 1 3 For gas flames Flame Rod e Ignition interference A flame signal current difference with the ignition both on and off greater than 0 5uA indicates the presence of ignition interference Insufficient ground must be at least 4 times the detector area Flame lifting off burner head ground or not continuously in contact with the flame rod Temperature in excess of 600 F 316 C at the flame electrode insulator causing short to ground HOLD The hold feature freezes the display for later view Press the HOLD button momentarily to activate and to exit the hold feature in the following function s BM111 amp BM112 All functions BM125 amp BM126 Upper display ACA function MAX The max feature compares and displays the measured maximum value as fast as 30ms with auto ranging capability Press the MAX button for 1 second or more to activate and to exit the max feature in the following function s BM111 amp BM112 DCV ACV amp ACA functions BM125 amp BM126 Upper display ACA function R2 P11 1 1 Relative zero 4 mode BM111 amp BM112 only Relative zero
8. losed or else it will introduce measurement errors Enclosing more than one conductor of a circuit will result in differential current like identifying leakage current measurement Strong Electro magnetic field environments such as high current transformers motors and conductors may affect measurement accuracy z o 3955 Hz Hz SELECT Temperature function BM126 only Be sure to insert the banana plug type K temperature bead probe Bkp60 with correct polarities Slide switch on defaults at degree C Celsius Press SELECT button momentarily to select degree F Fahrenheit You can also use a plug adapter Bkb32 Optional purchase with banana pins to type K socket to adapt other type K standard mini plug temperature probes uA Current function BM125 only Inputs are made through the test leads terminals Slide switch on defaults at DC Press SELECT button momentarily to select AC Application notes 1 The DC uA function is designed especially for HVAC R flame sensor applications The 0 1uA resolution is useful for identifying the minute current changes in flame detector applications Flame signal current check should indicate steady flame R2 P11 10 signal of at least 2uA for a rectification type or 1 5uA for an ultraviolet type 8A 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 re
9. pment of OVERVOLTAGE CATEGORY IV is for use at the origin of the installation Note Examples include electricity meters and primary over current protection equipment TERMS IN THIS MANUAL WARNING identifies conditions and actions that could result in serious injury or even death to the user CAUTION identifies conditions and actions that could cause damage or malfunction in the instrument R2 P11 3 WARNING To reduce the risk of fire or electric shock do not expose this product to rain or moisture The meter is intended only for indoor use To avoid electrical shock hazard observe the proper safety precautions when working with voltages above 60 VDC or 30 VAC rms These voltage levels pose a potential shock hazard to the user Inspect test leads connectors and probes for damaged insulation or exposed metal before using the instrument If any defects are found replace them immediately Do not touch test lead tips or the circuit being tested while power is applied to the circuit being measured To avoid accidentally short circuit of bare uninsulated hazardous live conductors or busbars switch them off before insertion and removal of the current clamp jaws Contact with the conductor could result in electric shock Keep your hands fingers behind the hand finger barriers that indicate the limits of safe access of the meter and the test leads during measurement CAUTION Disconnect the test leads from the test points before changin
10. ree from defects in material and workmanship under normal use and service within a period of one year from the date of purchase BRYMEN s warranty does not apply to accessories fuses fusible resistors spark gaps 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 To obtain warranty service contact your nearest BRYMEN authorized agent or send the product with proof of purchase and description of the difficulty postage and insurance prepaid 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 ALL OTHER WARRANTIES EXPRESSED OR IMPLIED INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTY OR MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OR USE BRYMEN WILL NOT BE LIABLE FOR ANY SPECIAL INDIRECT INCIDENTAL OR CONSEQUENTIAL DAMAGES BRYMEN BRIGHT PEOPLE S CHOICE BRYMEN TECHNOLOGY CORPORATION TEL 886 2 2226 3396 FAX 886 2 2225 0025 http www brymen com tw cre PRINTED ON RECYCLABLE PAPER PLEASE RECYCLE COPYRIGHT MMI Btc ALL RIGHTS RESERVED P N 7M1C 0281 A000 PRINTED IN
11. t terminal has subjected to high voltage transient caused by 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 WARRANTY section for obtaining warranty or repairing service R2 P11 12 Cleaning and Storage Periodically wipe the case with a damp cloth and mild detergent do not use abrasives or solvents If the meter is not to be used for periods of longer than 60 days remove the batteries and store them separately Battery replacement The meters use standard 1 5V alkaline button batteries IEC JIS LR44 GPA76 or V13GA In models BM111 amp BM112 2 batteries are used In models BM125 amp BM126 4 batteries are used 2 batteries are used for the slide switch functions and the other 2 batteries are used for the dual display ACA function separately Loosen the two screws from the case bottom and remove the bottom case Slide the battery out the side of the holder and replace with a new battery observe polarity Replace the bottom case Re fasten the screws 13 R2 P11 LIMITED WARRANTY BRYMEN warrants to the original product purchaser that each product it manufactures will be f
12. verse biased across the diode The digital display shows OL if the diode is good Any other readings indicate the diode is resistive or shorted defective Capacitance function Inputs are made through the test leads terminals Slide switch on defaults at Q Press SELECT button momentarily 3 times to select Capacitance function Relative zero A mode BM111 amp BM112 only can be used to zero out the parasitic capacitance of the leads and the internal protection circuitry of the meter when measuring low Capacitance in the order of Pico Farad pF CAUTION Discharge capacitors before making any measurement Large value capacitors should be discharged through an appropriate resistance load 100F 11 ACA Current clamp on function Inputs are made through the clamp jaws for non invasive ACA current measurements In BM111 amp BM112 the single input single display models use the slide switch to select the ACA function In BM125 amp BM126 the dual inputs twin displays models press the OFF push button momentarily to power on and off the separate ACA function display The HOLD push button can also be used as the ACA function power on hotkey This twin display ACA function can be used simultaneously with the voltage or any other slide switch functions when making measurements CAUTION Press the jaw trigger and clamp the jaws around only one single conductor of a circuit for load current measurement Make sure the jaws are completely c
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