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 Resistance, and 

 Continuity functions 

Inputs are made through the test leads terminals. Slide-switch on defaults at 

. 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. 

 

 Diode test function 

Inputs are made through the test leads terminals. Slide-switch on defaults at 

. Press 

SELECT button momentarily 2 times to select 

 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 (reverse 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 (not available to Model 110M) 

Inputs are made through the test leads terminals. Slide-switch on defaults at 

. Press 

SELECT button momentarily 3 times to select 

 Capacitance function.  

 
Note: (applies to Models 111M & Model 112M only) 
Relative zero   mode 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  measurements.  Large  value  capacitors 
should be discharged through an appropriate resistance load 
 
 

ACA function 

Inputs are made through the clamp jaws for non-invasive ACA current measurements.  
For Single Display Models, set the slide-switch to select the ACA function. 
For dual inputs Twin Display 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. 

Summary of Contents for BM110M

Page 1: ...USER S MANUAL BM110M BM111M BM112M Single Display BM127M BM128M Twin Displays Versatile Clamp on Multimeter Series ...

Page 2: ... 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 CAT...

Page 3: ...re found replace them immediately This Clamp on meter is designed to apply around or remove from uninsulated hazardous live conductors But still individual protective equipment must be used if hazardous live parts in the installation where measurement is to be carried out could be accessible CAUTION Disconnect the test leads from the test points before changing meter functions INTERNATIONAL ELECTR...

Page 4: ...ctions 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 power ON OFF and Select a function 8 3 3 4 digits 4000 counts LCD display s 9 Jaw trigger for opening the transformer clamp jaw 10 Jaw center Ind...

Page 5: ... function in the following slide switch functions Single Display Models DCV ACV via the test leads ACA via the clamp jaw Twin Display Models DCV ACV DCµA ACµA via the test leads not available to ACA Note DC 400 0mV range is designed with 1000MΩ high input impedance for least current drain in measuring small signals and can cope better with most commercially available voltage output transducers ada...

Page 6: ...ise may cause unstable Hz reading Activating the Hz function at AC 4 000V range before making significant measurements can get lower trigger level higher sensitivity Hz reading may show zero when the sensitivity is insufficient 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 com...

Page 7: ...shorted defective Capacitance function not available to Model 110M Inputs are made through the test leads terminals Slide switch on defaults at Ω Press SELECT button momentarily 3 times to select Capacitance function Note applies to Models 111M Model 112M only Relative zero mode can be used to zero out the parasitic capacitance of the leads and the internal protection circuitry of the meter when m...

Page 8: ... errors Enclosing more than one conductor of a circuit will result in differential current like identifying leakage current measurement Locate the conductor s at the Jaws center as much as possible to get the best measuring accuracy For removal press the jaw trigger and remove the jaws from the conductor s Adjacent current carrying devices such as transformers motors and conductor wires will affec...

Page 9: ... Bkb32 Optional purchase with banana pins to type K socket to adapt other type K standard mini plug temperature probes µ µ µ µA Current function Twin Display Models only Inputs are made through the test leads terminals Slide switch on defaults at DC Press SELECT button momentarily to select AC Application notes The DCµA function is designed especially for HVAC R flame sensor applications The 0 1µA...

Page 10: ...l current difference with the ignition both on and off greater than 0 5µA 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 oF 316 oC at the flame electrode insulator causing short to ground HOLD The hold feature freezes th...

Page 11: ... 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 o...

Page 12: ...unctions and the other one is used for the twin 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 GENERAL SPECIFICATION Display 3 3 4 digits 4000 counts LCD display s Update Rate 3 per second nominal Polarity A...

Page 13: ...nce function is not specified µA function Models 127M 128M only Total Accuracy Specified Accuracy 65 digits Other function ranges Total Accuracy Specified Accuracy 45 digits Performance above 3V m is not specified Power Supply 3V coin battery IEC CR2032 One battery for Single Display Models Two batteries for Twin Display Models Power Consumption 2 8mA typical except that 3 3mA typical for ACA func...

Page 14: ... 400 0V 0 5 3d 600V 1 0 4d NMRR 50dB 50 60Hz CMRR 120dB DC 50 60Hz Rs 1kΩ Input Impedance 10MΩ 30pF nominal 1000MΩ for 400 0mV range AC Voltage RANGE Accuracy 50Hz 500Hz 4 000V 40 00V 400 0V 1 5 5d 600V 2 0 5d CMRR 60dB DC to 60Hz Rs 1kΩ Input Impedance 10MΩ 30pF nominal ACA Current Clamp on RANGE Accuracy1 2 3 50Hz 60Hz 40 00A 1 5 8d 400 0A 1 5 8d 600A 1 5 8d Not available to Model 110M 1 Induced...

Page 15: ...o Models 111M 112M only 3 Unspecified for Model 110M Capacitance RANGE1 Accuracy2 3 500 0nF 5 000µF 50 00µF 500 0µF 3000µF 3 5 6d Not available to Model 110M 1 Additional 50 00nF range accuracy is not specified 2 Accuracies with film capacitor or better 3 Specified with battery voltage above 2 8V approximately half full battery Accuracy decreases gradually to 12 at low battery warning voltage of a...

Page 16: ...repaid 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 O...

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