BRYMEN BM251s Digital Multimeter User Manual

June 1, 2024
BRYMEN

BRYMEN BM251s Digital Multimeter

Product Information

Specifications

  • Model Numbers: BM251s, BM252s, BM255s, BM257s
  • Display: 3-5/6 digits 6000 counts LCD display
  • Power Source: Battery
  • Safety Standards: Meets IEC/EN/BSEN/CSA_C22.2_No./UL standards of 61010-1 Ed. 3.1 and 61010-2033 Ed. 2.0 to Measurement Categories CAT III 600V and CAT IV 300V AC & DC
  • Special Features: Analog bar-graph for visual indication of measurements, push-buttons for special functions, selector for power control and function selection

Product Usage Instructions

Safety Precautions
When using the meter, observe the following safety precautions:

  • Do not operate the meter in a manner not specified by the manufacturer.
  • Avoid exposure to voltages above 30 Vrms, 42.4 Vpeak, or 60 VDC as they pose a shock hazard.
  • Keep the meter away from rain or moisture; only for indoor use.
  • Inspect leads, connectors, and probes for damage regularly.
  • Use only the provided test probe assembly or a UL Listed assembly.

Functionality
The meter features:

  • Various input jacks for different functions including current measurements.
  • Analog bar-graph for visual indication of measurements.
  • Push-buttons for special functions and features.
  • Selector for power control and function selection.

Using the Analog Bar-Graph
The analog bar graph provides visual feedback for measurements:

  • Helps detect faulty contacts and identify potentiometer clicks.
  • Indicates signal spikes during adjustments.

Frequently Asked Questions (FAQ)

  • Q: Can I use the meter outdoors?
    A: No, the meter is intended only for indoor use to ensure safety and proper functioning.

  • Q: How often should I inspect the leads and probes?
    A: It is recommended to inspect the leads, connectors, and probes for damage periodically and replace them immediately if any defects are found.

USER’S MANUAL
BM251s BM252s BM255s BM257s

SAFETY

  • This manual contains information and warnings that must be followed for operating the meter safely and maintaining the meter in a safe operating condition. If the meter is used in a manner not specified by the manufacturer, the protection provided by the meter may be impaired.
  • Observe proper safety precautions when working with voltages above 30 Vrms, 42.4 Vpeak or 60 VDC. These voltage levels pose a potential shock hazard to the user. Do not expose this product to rain or moisture. The meter is intended only for indoor use.
  • Keep your hands/fingers behind the hand/finger barriers (of the meter and the test probe assembly, where applicable) that indicate the limits of safe access of the hand-held parts during measurements. Inspect lead wires, connectors, and probes for damaged insulation or exposed metal periodically. If any defects are found, replace them immediately. Only use the test probe assembly provided with the meter or a UL Listed test probe assembly to the same meter ratings or better.
  • Optional offer premium test probe assembly using silicone lead wire insulation, at agent’s discretion, is equipped with white inner insulation layers as wear indicators. Replace them immediately if any of the white layers has become visible.
  • Disconnect the test leads from the test points before changing functions.
  • The meter meets IEC/EN/BSEN/CSA_C22.2_No./UL standards of 61010-1 Ed. 3.1 and 61010-2-033 Ed. 2.0 to Measurement Categories CAT III 600V and CAT IV 300V AC & DC
  • The accompanied test probe assembly meets IEC/EN/BSEN/CSA_C22.2_No./UL standards of 61010-031 Ed. 2.0 to the same meter ratings or better. The 61010-031 requires exposed conductive test probe tips to be ≤ 4mm for CAT III & CAT IV ratings.
  • Refer to the category markings on your probe assemblies as well as on the add-on accessories (like detachable Caps or Alligator Clips), if any, for applicable rating changes.

INTERNATIONAL SYMBOLS

  • Marking of Electrical and Electronic Equipment (EEE). Do not dispose of this product as unsorted municipal waste. Contact a qualified recycler
  • Refer to the explanation in this Manual
  • Possibility of electric shock
  • Earth (Ground)
  • Meter protected throughout by Double Insulation or Reinforced insulation
  • Fuse
  • Direct Current (DC)
  • Alternating Current (AC)
  • Three-phase Alternating Current
  • Application around and removal from hazardous live conductors is permitted

Brief Information about Measurement Categories

  • Measurement Category IV is applicable to test and measuring circuits connected at the source of the building’s low-voltage MAINS installation. Examples are measurements on devices installed before the main fuse or circuit breaker in the building installation.
  • Measurement 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 such as stationary motors with permanent connection to the fixed installation.
  • Measurement Category II is applicable to test and measuring circuits connected directly to utilization points (socket outlets and similar points) of the low-voltage MAINS installation. Examples are measurements on MAINS CIRCUITS of household appliances, portable tools and similar equipment.

EUROPEAN DIRECTIVES AND UK STATUTORY REQUIREMENTS
The instruments conform to EUROPEAN (CE) Low-Voltage Directive 2014/35/EU, Electromagnetic Compatibility Directive 2014/30/EU, and RoHS 2 Directive 2011/65/EU plus amendment Directive (EU) 2015/863. The instruments also conform to the UK (UKCA) Electrical Equipment (Safety) Regulations 2016, Electromagnetic Compatibility Regulations 2016, and The Restriction of the Use of Certain Hazardous Substances in Electrical and Electronic Equipment Regulations 2012.

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PRODUCT DESCRIPTION

Note: Top of the line model is used as representative for illustration purposes. Please refer to your respective model for function availability.

Analog bar-graph
The analog bar graph provides a visual indication of measurement like a traditional analog meter needle. It is excellent in detecting faulty contacts, identifying potentiometer clicks, and indicating signal spikes during adjustments.

Average sensing RMS calibrated
RMS (Root-Mean-Square) is the term used to describe the effective or equivalent DC value of an AC signal. Most digital multimeters use average sensing RMS calibrated technique to measure RMS values of AC signals. This technique is to obtain the average value by rectifying and filtering the AC signal. The average value is then scaled upward (calibrated) to read the RMS value of a sine wave. In measuring pure sinusoidal waveform, this technique is fast, accurate and cost effective. In measuring non-sinusoidal waveforms, however, significant errors can be introduced because of different scaling factors relating 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 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 1.4. A badly distorted sinusoidal waveform normally has a much higher Crest Factor.

OPERATION

NOTE
Before and after hazardous voltage measurements, test the voltage function on a known source such as line voltage to determine proper meter functioning .BRYMEN-BM251s-Digital-Multimeter- \(3\)

AutoCheckTM mode (Models 257 & 255 only)
This innovative AutoCheckTM feature automatically selects measurement function of DCV, ACV or Resistance ( ) based on the input via the test leads.

  • With no input, the meter displays “Auto” when it is ready.
  • With no voltage signal but a resistance below 10M (nominal) is present, the meter displays the resistance value. When the resistance is below “Audible Threshold”, the meter further gives a continuity beep tone.
  • When a signal above the voltage threshold of 1V DC or AC up to the rated 600V 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 a measurement reading is being displayed in AutoCheckTM mode, press the RANGE or SELECT button momentarily 1 time can lock the range or function it was in. Press the button momentarily repeatedly to step through the ranges or functions.
  • As Hazardous-Alert: When making resistance measurements in AutoCheckTM mode, an unexpected display of voltage readings alerts you that the object under test is being energized.
  • Ghost-voltage Buster: Ghost-voltages are unwanted stray signals coupled from adjacent hard signals, which confuse common multimeter voltage measurements. Our AutoCheckTM 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 indication of hard signals, such as distinguishing between hot and open wires (to ground) in electrical installation applications.

NOTE

AutoCheckTM mode input impedance increases abruptly from initial 2.1kΩ 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 600VAC for example, can be up to 404mA (600V x 1.414 / 2.1kΩ), decreasing abruptly to approx. 3.4mA (600V x 1.414 / 250kΩ) within a fraction of a second. Do not use AutoCheckTM mode on circuits 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.

DCV, ACV, & Line Frequency functions
Press the Hz push-button for one second or more to activate or to exit Hz.

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Note

  • Input sensitivity varies automatically with function range selected before activating the Hz function. 6V function range has the highest and the 1000V function range has the lowest. It is recommended to first measure the signal voltage (or current) level then activate the Hz function in that voltage (or current) range to automatically set the most appropriate trigger level. You can also press the RANGE button momentarily to select another trigger level manually. If the Hz reading becomes unstable, select lower sensitivity to avoid electrical noise. If the reading shows zero, select higher sensitivity.
  • Number of Bar-graph pointer is used to indicate input range (sensitivity) selected. 1/2/3/4 pointers indicate 6/60/600/1000V, 6/10/-/-A, 60/600/-/-mA or 600/6000/-/-uA is selected in corresponding V, A, mA or uA function respectively. ( “-” means range not available)
  • The Hz of mV function is designed specially for logic level (3V or 5V family) frequency measurement.

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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.

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NOTE
Discharge capacitors before making any measurement. Large value capacitors should be discharged through an appropriate resistance load.

NOTE
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

Continuity function is convenient for checking wiring connections and operation of switches. A continuous beep tone indicates a complete wire.
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).

DCmV, ACmV, Temperature oC & oF functions (Models 257, 255 & 252 only)
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.

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Note: Be sure to insert the banana plug K-type temperature bead probe Bkp60 with correct polarities. You can also use a plug adapter Bkb32 (Optional purchase) with banana pins to K-type socket to adapt other standard K type mini plug temperature probes.

UA, mA, and A Current functions
Press SELECT button momentarily to toggle between DC and AC. Last selection will be saved as power up default for repeat measurement convenience. BRYMEN-BM251s-Digital-Multimeter- \(9\)

*Note: When measuring a 3-phase system, special attention should be taken to the phase-to-9 phase voltage which is significantly 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
At Volt or Current function, press the EF button for one second or more and release to toggle to EF-Detection feature. The meter displays “E.F.” when it is ready. Signal strength is indicated as a series of bar-graph segments on the display plus variable beep tones.

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  • Non-Contact EF-Detection: An antenna is located along the top-right end of the meter, which detects electric field surrounds current-carrying conductors. It is ideal for tracing live wiring connections, locating wiring breakage and to distinguish between live or earth connections.
  • Probe-Contact EF-Detection: For more precise indication of live wires, such as distinguishing between live and ground connections, use the Red (+) test probe for direct contact measurements.

PC computer interface capabilities
The instrument equips with an optical isolated interface port at the meter back for data communication. Press HOLD button while turning the meter on to enable meter PC-COMM output. Optional purchase PC interface kit BRUA20X is required to connect the meter to the PC computer RS232 or USB ports.

MAX/MIN at Fast 20/s measurement mode (Models 257 & 255 only)
Press REC button momentarily to activate MAX/MIN recording mode. The LCD “MAX MIN” turn on, and the reading update rate will be increased to 20/second. The meter beeps when new MAX (maximum) or MIN (minimum) reading is updated. Press the button momentarily to read the MAX and MIN readings in sequence. Press the button for 1 second or more to exit MAX/MIN recording mode. Auto-ranging remains, and Auto-Power-Off is disabled automatically in this mode.
5ms CREST capture mode (Models 257 & 255 only)

  • Press CREST button momentarily to activate CREST (Instantaneous Peak-Hold) mode to capture voltage or current signal duration as short as 5ms. The LCD “C” & “MAX” turn on. Press the button momentarily to read the MAX and MIN readings in sequence. Press the button for 1 second or more to exit CREST capture mode. Auto-ranging and Auto-Power-Off are disabled automatically in this mode.

Backlighted LCD display (Models 257 & 255 only)
Press the SELECT button for 1 second or more to toggle the LCD backlight. The backlight will also be turned off automatically after 32 seconds to extend battery life.

Hold
The hold feature freezes the display for later view. Press the HOLD button momentarily to toggle the hold feature.
Relative Zero ( ) mode
Relative zero allows the user to offset the meter consecutive measurements with the displaying reading as the reference value. Practically all displaying readings can be set as relative reference value including MAX/MIN feature readings. Press the REL button momentarily to toggle relative zero mode.
Manual or Auto-ranging
Press the RANGE button momentarily to select manual-ranging, and the meter will remain in the range it was in, the LCD turns off. Press the button momentarily again to step through the ranges. Press and hold the button for 1 second or more to resume auto-ranging.
Note: Manual ranging feature is not available in Hz and functions.
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.
Beep-Jack™ Input Warning
The meter beeps as well as displays “InEr” to warn the user against possible damage to the meter due to improper connections to the UA, mA, or A input jacks when other function (like voltage function) is selected.
Auto-Power-Off (APO)
The Auto-Power-Off (APO) mode turns the meter off automatically to extend battery life after approximately 34 minutes of no rotary switch or push button operations. To wake up the meter from APO, press the SELECT, CREST or REC button momentarily or turn the rotary switch OFF and then back on. Always turn the rotary switch to the OFF position when the meter is not in use
Disabling Auto-Power-Off
Press the SELECT button while turning the meter on to temporarily disable the Auto-Power-Off (APO) feature. Turn the rotary switch OFF and then back on to resume.

MAINTENANCE

NOTE
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. 11 Install only the same type of fuse or equivalent
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 “C_Er” is being displayed while powering on, some meter ranges might be largely out of specifications. To avoid mis-leading measurements, stop using the meter and send it for re-calibration. Refer to the LIMITED WARRANTY section for obtaining warranty or repairing service.
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 battery and store it separately

Trouble Shooting

If the instrument fails to operate, check battery, fuses, leads, etc., and replace as necessary. Double check operating procedure as described in this user’s manual
If the instrument voltage-resistance input 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.

Battery and Fuse replacement Battery use: 1.5V AAA Size battery x 2
Fuses use:
Fuse (F1) for UAmA current input:

  • 0.4A/1000V ac & dc, IR 30kA, F fuse; Dimension: 6 x 32 mm Fuse (F2) for A current input:
  • 11A/1000V ac & dc, IR 20kA, F fuse; 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.

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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: 0oC to 40oC
  • Relative Humidity: Maximum relative humidity 80% for temperature up to 31oC decreasing linearly to 50% relative humidity at 40oC
  • Altitude: Operating below 2000m
  • Storage Temperature: -20oC ~ 60oC, < 80% R.H. (with battery removed)
  • Temperature Coefficient: Nominal 0.15 x (specified accuracy)/ oC @ (0oC ~ 18oC or 28oC ~ 40oC), or otherwise specified
  • Sensing:
  • Models 251, 252 & 255: Average sensing
  • Model 257: True RMS sensing
  • Pollution Degree: 2
  • Safety: Certified per IEC/UL/EN61010-1 Ed. 3.1, IEC/UL/EN61010-2-033 Ed. 2.0,
  • IEC/UL/EN61010-031 Ed. 2.0 and the corresponding CAN/CSA-C22.2 regulations to Measurement Categories: CAT III 600V and CAT IV 300V AC & DC
  • Transient Protection: 6.5kV (1.2/50Is surge)
  • Terminals (to COM) Measurement Category: V / mAUA / A: CAT III 600V and CAT IV 300V AC & DC.
  • E.M.C. : Meets EN61326-1
  • In an RF field of 3V/m:
  • Capacitance function is not specified
  • Other function ranges:
  • Total Accuracy = Specified Accuracy + 100 digits Performance above 3V/m is not specified

Overload Protection:

  • UA & mA: 0.4A/1000V DC/AC rms, IR 30kA @ 1000V DC/AC rms A: 11A/1000V DC/AC rms, IR 20kA @ 1000V DC/AC rms
  • V & AutoCheckTM: 660Vdc / 1100Vac rms
  • mV, Ohm & others: 600Vdc/Vac rms
  • Low Battery: Below approx. 2.3V
  • Power Supply: 1.5V AAA Size battery X 2
  • Power Consumption (typical): 3.5mA
  • APO Consumption (typical): 10UA
  • APO Timing: Idle for 34 minutes
  • Dimension: 1618050mm LWH (With Holster)
  • Weight: Approx. 340 gm (With Holster)
  • Special Features: AutoCheckTM V & U (Models 255 & 257 only); Auto-ranging MAX/MIN Record (Models 255 & 257 only); Crest mode (Peak Hold, Models 255 & 257 only), Backlighted LCD
  • (Models 255 & 257 only); Auto-ranging Relative Zero mode; Display Hold; EF-Detection (NCV); Interface capabilities with PC computer; Input warning detection
  • Accessories: Test lead pair; batteries installed; user’s manual; BKP60 banana plug type-K thermocouple (Models 252, 255 & 257 only)
  • Optional purchase accessories: USB interface kit BRUA-20X; Magnetic hanger BMH-01; BKB32 banana plug to type-K socket plug adaptor (Models 252, 255 & 257 only)

Electrical Specification
Accuracy is given as +/- (% of reading digits + number of digits) or otherwise specified @ 23oC +/- 5oC and less than 75% R.H.
True RMS Model 257 ACV & ACA accuracies are specified from 5 % to 100 % 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

AC Voltage

RANGE Accuracy

50Hz ~ 400Hz
60.00mV 1), 600.0mV 1)| 1.0% + 5d
6.000V 2), 60.00V 2), 600.0V 2)

  1. Overload protection: 600Vrms AC/DC
  2. Overload protection: 1100Vrms for AC &

660V for DC
Input Impedance: 10M , 50 pF nominal
AutoCheckTM_ACV (Models 255 & 257 only)

RANGE Accuracy

50Hz/60Hz
1.000V ~ 600.0V| 1.4% + 5d

Overload protection: 1100Vrms for AC & 660V
for DC
AutoCheckTM Lo-Z ACV Threshold: 1V nominal
AutoCheckTM Lo-Z ACV Input Impedance: Initially approx. 2.1k , 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:

  • 15k @100V
  • 100k @300V
  • 250k  @600V

Ohm

RANGE Accuracy

600.0

, 6.000K ,
60.00K ,

600.0K

| 0.5%+4d
6.000M| 0.7%+4d
60.00M| 1.2%+4d

Open Circuit Voltage: 0.45VDC typical

DC Voltage

RANGE Accuracy
60.00mV 1) 0.4%+5d
600.0mV 1) 0.2%+3d

6.000V 2), 60.00V 2), 600.0V 2)

  1. Overload protection: 600Vrms AC/DC
  2. Overload protection: 1100Vrms for AC &

660V for DC
Input Impedance: 10M , 50 pF nominal
AutoCheckTM_DCV (Models 255 & 257 only)

RANGE Accuracy
1.000V ~ 600.0V 1.3% + 3d

Overload protection: 1100Vrms for AC & 660V
for DC
AutoCheckTM Lo-Z DCV Threshold:
+1.0VDC & < -1.0VDC nominal

AutoCheckTM Lo-Z DCV Input Impedance: Initially approx. 2.1k , 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:

15k @100V
100k @300V
250k @600V

AutoCheckTM_Ohm (Models 255 & 257 only)

RANGE 1) Accuracy
000.0W ~ 60.00MW 1.2% + 10d

Open Circuit Voltage: 0.45VDC typical
1)AutoCheckTM Ohm Threshold:
< 10.00M nominal
CREST Mode (Models 255 & 257 only) Accuracy: Specified accuracy plus 150 digits
for changes > 5ms in duration

RECORD Mode (Models 255 & 257 only)
Accuracy: Specified accuracy plus 100 digits for changes > 100ms in duration

Audible Continuity Tester
Audible Threshold: Between 10 and 80 Response time: 32ms

Capacitance (Models 252, 255 & 257 only)

RANGE Accuracy
60.00nF, 600.0nF 2.0%+5d
6.000mF, 60.00mF, 600.0mF 1.5%+5d
3000mF 2.0%+5d

Accuracies with film capacitor or better

Diode Tester

RANGE Accuracy
1.000V 1.0% + 3d

Test Current: 0.56mA typically
Open Circuit Voltage: < 1.8VDC typically

DC Current

RANGE Accuracy Burden Voltage
600.0mA 0.5%+5d 0.10 mV/uA
6000mA 0.5%+3d
60.00mA 0.5%+5d 1.7 mV/mA
600.0mA 0.5%+3d
6.000A 1.2%+6d 0.03V/A
10.00A1) 1.8%+6d
  1. 10A continuous, >10A to 20A for 30 sec. max with 5 minutes cool down interval

AC Current

RANGE Accuracy Burden Voltage

50HZ ~ 400HZ
600.0mA, 6000mA| 1.0%+3d| 0.10 mV/uA
60.00mA, 600.0mA| 1.7 mV/mA
6.000A| 1.2%+6d| 0.03V/A
10.00A1)| 1.8%+6d

  1. 10A continuous, >10A to 20A for 30 sec. max with 5 minutes cool down interval

Logic Level Hz (mV Function)

RANGE Sensitivity (square wave)
5.00 Hz ~ 500.0 kHz 3 Vpeak
5.00 Hz ~ 1.000 MHz 5 Vpeak

Accuracy: 0.03%+2d
Hz (Line) @ ACV, DCV, Current & AutoCheckTM

Function Sensitivity (Sine RMS) Range
6V 0.4V 10Hz – 10kHz
60V 4V 10Hz – 50kHz
600V 40V 10Hz – 50kHz
1000V 400V 45Hz – 1kHz
600mA 40mA 10Hz – 10kHz
6000mA 400mA 10Hz – 10kHz
60mA 4mA 10Hz – 10kHz
600mA 40mA 10Hz – 10kHz
6A 1A 10Hz – 1kHz
10A 6A 10Hz – 1kHz

Accuracy: 0.03%+3d

Temperature (Models 252, 255 & 257 only)

RANGE Accuracy
-50 oC ~ 1000 oC 0.3% + 3d
-58 oF ~ 1832 oF 0.3% + 6d

K type thermocouple range & accuracy not i ncluded

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 & 1000V) – – – – –

Indication: Bar-graph segments & audible beep
tones proportional to the field strength Detection Frequency: 50/60Hz
Detection Antenna: Top-right end of the meter Probe-Contact EF-Detection: For more precise
indication of live wires, such as distinguishing between live and ground connections, use the Red (+) test probe for direct contact measurements

LIMITED WARRANTY

BRYMEN warrants to the original product purchaser that each product it manufactures will be free 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 TECHNOLOGY CORPORATION TEL:+886 2 2226 3396
FAX:+886 2 2225 0025
http://www.brymen.com

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