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Category III (clamp); Category II (DMM). Averaging, autoranging DMM with 4,000 count large LCD display and temperature function. MN42 - 8 Function Compact.On Sale Extech EX411 Multimeter. We take purchase orders and can provide special school, government and corporate pricing.Category III (clamp); Category II (DMM). Averaging, autoranging DMM with 4,000 count large LCD display and temperature function. MN42 - 8 Function Compact.On Sale Extech EX411 Multimeter. We take purchase orders and can provide special school, government and corporate pricing. Detecting Live NIST Certified Meters. Read and understand this user manual before operating the meter. 2. Make sure any Congratulations on your purchase of the Extech MN16A Autoranging Multimeter. This meter Read and understand this user manual before operating the meter.. Extech Instruments Corporation, 285 Bear Hill Rd., Waltham, MA 02451. that the operator must refer to an explanation in the Operating Instructions to Extech Instruments Corporation, 285 Bear Hill Road, Waltham, MA 02451. Extech Instruments Corporation, 285 Bear Hill Rd., Waltham, MA 02451. WARRANTY Read and understand this user's manual before operating the meter. 2. Thank you for selecting the Extech EX205T True RMS Auto-ranging Multimeter. This meter (extech.com) to check for the latest version of this User Guide. Introduction. Congratulations on your purchase of the Extech VT10 Multifunction Voltage Tester. The. VT10 measures AC Voltage to 600V and DC Voltage to Congratulations on your purchase of the Extech EA80 Indoor Air Quality Meter.. Extech Instruments Corporation, 285 Bear Hill Rd., Waltham, MA 02451. When connected between the 120V AC wall outlet and the device under test, a clamp meter can then be clamped around one of the t wo test openings in the Splitter. One opening provides a one-to-one current rea ding and the other provides a times-t en (X10) reading so that small current will display with better resolution on a clamp meter.
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Current Measurements 1. Plug the AC Line Splitter into the 120V receptacle 2. Plug the line cord from the load into the AC Line Splitter socket 3. Close the Clamp-on jaws around either the X1 or X10 arm of the AC Line Splitter 4. If the X1 position is used, read the current directly on the meter 5. If the X10 position is used, di vide the meter reading by 10 to obtain the actual current Voltage Measurements 1. Plug the AC Line Splitter into the 120V receptacle 2. Insert the multimeter test leads into the two Voltage Test jacks 3. Read the voltage on the multimeter. Dimensions: 5.25 x 2 x 1” (133 x 51 x 25mm) Weight 0.753lb (342g) (includes holster). Safety For indoor use and in accordance with the requirements for double insulation to IEC1010-1 (1995): EN61010-1 (1995) Overvoltage Category II, Pollution Degree 2. International Safety Symbols Refer to the manual for further information Double insulation Warranty EXTECH INSTRUMENTS CORPORATION warrants t his instrument to be free of defect s in parts and workmanship for one year from date of shipment (a six month limited warranty applies on sensors and cables). A Return Authorization (RA) number must be issued befor e any product is returned to Extech. The sender is responsible for shipping charg es, freight, insurance and proper packa ging to prevent damage in transit. This warranty does not apply to defects resulting f rom action of the user such as misuse, improper wiring, operation outside of spec ification, improper maintenance or repair, or unauthorized modifica ti on. Extech specifically disclaims any implied warranties or merchantability or fitness for a specific purpose and will not be liable for any direct, indirect, incidental or cons equential damages. Extech 's total liability is limited to repair or replacement of the produc t. The warranty set forth above is inclusive and no other warranty, whether written or oral, is expressed or implied.
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CAUTION identifies conditions and actions that could cause damage or malfunction in the instrument. This manual contains informat ion and warnings that must be followed for operating the instrument safely and mainta ining the instrument in a sa fe operating condition. If the instrument is used in a manner not specif ied by the manufacturer, the protection provided by the instrument ma y be impaired. The meter is intended only for indoor use. Per IEC61010-1 2nd Ed. (2001) Measurement Category Measurement Category IV (CAT IV) is for measurements perf ormed at the source of the low-voltage installation. Examples are electricity meters and measurements on primary overcurrent protection de vices and ripple control units. Measurement Category III (CAT III) is for measurements performed in the building installation. Examples are measurements on distribution boards, 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, for example, stationary motors with permanent co nnection to the fixed installation. Measurement Category II (CAT II) is for measurements perf ormed on circuits directly connected to the low voltage installation. Examples are measurement s on household appliances, portable tool s and similar equipment. To avoid electrical shock haza rd, observe the proper safety precautions when working with voltages ab ove 60 VDC or 30 VAC rms. These voltage levels pose a potential shock hazard to the user. Do not touch test lead tips or the circuit being tested while power is applied to the circui t being measured. Keep your fingers behind the finger guards of the test leads during measurement. In spect test leads, connectors, and probes for damaged insulation or expos ed metal before using the instrument. If any defects are found, replac e them immediately. Do no t measure any current that exceeds the current rating of the prot ection fuse.
Do not attempt a current measurement to any circuit wh ere the open circuit voltage is above the protection fuse voltage rating. Suspected o pen circuit voltage should be checked with voltage functions. Never attempt a voltage measurement with the test lead inserted into the. Only replace the blow n fuse with the proper rating as specified in this manual. CAUTION Disconnect the test leads from the test points before ch anging functions. Always set the instrument to the high est range and work downward for an unknown value when using manual ranging mode.It is excellent for detecting faul ty 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 effectiv e or equivalent DC value of an AC signal. Most digital mult imeters use average se nsing RMS calibrated technique to measure RMS values of AC si gnals. 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 si ne wave. In measuring pure sinusoidal waveforms, this te chnique is fast, accurate and cost effective. In measuring non-sinusoidal waveform s, however, significant errors can be introduced because of different scaling factors rela ting average to RMS values. True RMS True RMS is a term which id entifies a DMM that responds accurately to the effective RMS value regardless of the waveforms such as: square, sawtoo th, triangle, pulse trains, spikes, as well as distorted wave forms with the pres ence of harmonics.
Harmonics may cause: 1) Overheating in transfor mers, generators and motors 2) Circuit breakers to trip prematurely 3) Fuses to blow 4) Neutrals to overheat due to the tr iplen harmonics present on the neutral 5) Bus bars and electrical panels to vibrate Crest Factor Crest Factor is the ratio of the Crest (i nstantaneous peak) value to the True RMS value, and is commonly used to define th e 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. NMRR (Normal Mode Rejection Ratio) NMRR is the DMM's ability to reject unw anted AC noise effe cts that can cause inaccurate DC measurements. NMRR is typica lly specified in term s of dB (decibel).CMRR is the DMM' s ability to reject common mode voltage effect that can caus e digit rolling or offset in voltage measurements. If neither NMRR nor CMRR specification is specified, a DMM' s performance will be uncertain. 4) OPERATION CAUTION Before and after hazardous voltage measurements, test the volt age function on a known source such as line voltage to determine proper meter functioning. Press SELECT but ton momentarily to select AC. Press the Hz push-button moment arily t o activate or to exit H z. A A A DCV ACV Hz Note: Input sensitivity varies automatically with function range selected before activating the Hz function.It is recommended to first me asure the signal voltag e (or current) level then activate the Hz function in that voltage (or current) range to automatically set the most appropriate trigger leve l. 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, sele ct higher sensitivity. Pre ss SELECT button momentarily to select Diode test functi on. CAUTION Discharge capacitors before making any me asurement.
Large value capacitors should be discharged through an appr opriate resistance load. Normal forward voltage drop (forward biased) for a goo d silicon diode is between 0.400V to 0.900V. A hi gher reading indicates a leaky dio de (defective). A zero reading indicates a shorted diode (defective). An OL indicates an open diode (defect ive). Reverse the test le ads connections (reverse biased) across the diode. The digital display shows OL if the diode is good. Any ot her readings indicate the diode is resistive or shorted (defective). A A A Forward Bias Reverse Bias Cap Diode Diode A continuous beep tone indicates a complete wire. A A In many ca ses the suspected component must be disconnected from the circuit to obtain an accurate reading Auto leads resistance calibration When entering the 50.The display shows “Shrt”. Simply short the leads for 3 seconds until th e display shows zero, then the resistance in the leads and in the internal protecti on circuitry of the meter is compensated automatically. The compen sation value can be as much as 5 ?. If a compensation value that is higher than that is needed, Relative mode is recommended. The shortcut is to short the test leads in auto-ranging resistance mode until the meter enters the lowest 50.Note: The calibration stays unt il the range is changed, the function is changed, or auto- ranging mode is selected. A A ? ? 3 Sec To avoid exceeding the voltag e rating of the protection fuse(s) accidentally, always consider the phase - to - phase voltage as the working volt age for the protection fuse(s). PC-COMM computer interface capabilities The instruments are equipped with an optical isolated inte rface port at the meter back for data communication. An optional PC interf ace kit is required to connect the meter to the PC computer. A A Press PEAK button momentarily to activate Instantaneous Peak-Hold mode toPress the button for greater than 1 secon. PEAK capture mode.
Auto Power Off feature will be disabled automaticallPress the button momentarily to read thr oughout the Maximum (MAX), Minimum (MIN), and Maximum minus Minimum (MAX-MIN) readi ngs. T he meter beeps when a new maximum or m i nimum reading is u pdated. Press the button momentarily to read throughout the Maxi mum (MAX), Minimum (MIN), and M aximum minus Minimum (MAX-MIN) readings. Press the button for greater than 1 secon d to exit PEAK capture mode. Auto Powe r Off feature will be disabled automaticall y in this mode. The hold function freezes the display for laterThe Zoom mode analog pointer magnifies up to 5The backlight will also be turned of f automatically after 30 seconds to extend battery life. Hold The hold function free zes the display for later viewing. Press the HOLD button momentarily to activate or to exit the hold function Zoom 5x analog pointe r (M odel MP530 only) The Zoom mode analog pointer magnifies up to 5 times the regular analog bar graph resolution to show minute si gnal changes with a single an alog pointer.Press the RANGE button momentarily toNote: Manual ranging feature is not availaThe meter beeps as well as displays “lnEr” to warn the user against possibleSet Beeper Off. Press the Hz button while turning the meter on to disable the Beeper feature.Press the button momentarily to activate and to exit relative zero mode. Manual or Auto-ranging Press the RANGE button m o m e ntarily to select m anual-ranging, and the meter will remain in the select ed range and the LC D annunciator will turn off. Press the button momentarily again to step through the ranges. Press a nd hold the button for greater than 1 second to resum e auto-rang ing. Note: Manual ranging feature is not availa ble in Hz function. A, m A, or A input jacks wh en other function (such as t he volt age f unct i on) is selected. Set Beeper Off Press the Hz butt on while turning t he met e r on t o disable the Beeper feature.
Act ivities are specified as: 1) Rotary switch or push button operations, and 2) Si gnificant measuring readings of above 10 of range or non-OL ? readings. That is, the meter wi ll intelligently avoid entering the APO mode when it is under normal measur ements. To wake up the meter from APO, press the SELECT button momentarily or turn the rota ry switch to the OFF position and then turn back on again. Alwa ys turn the rot ary switch to the OFF position when the meter is not in use Disabling Auto Power Off Press the RANGE button while turning the meter on to disable the Auto Power Off (APO) feature. 5) MAINTENANCE WARNING To avoid electrical shock, disconnect the me ter from any circuit, remove the test leads from the input jacks and turn OFF the mete r before opening the case. Do not operate with open case. Install only the sa me type of fuse or equivalent Turn-On diagnostics If self-diagnostic message “rE-O” is disp layed while powering on the meter, do not switch off the meter off. The meter will quickly complete th e task and return to normal operation. To avoid measurement errors, stop using the meter and send it in for re-calibra tion. Refer to the WARRANTY section for obtaining warra nty or repair service. Cleaning and Storage Periodically wipe the case with a damp cl oth and mild detergent; do not use abrasives or solvents. If the meter is not to be used for periods longer than 60 days, remove the battery and store it separately Double check operating procedur e as described in this user’s manual If the instrument voltage-resi stance input terminal is subj ected to accidental high voltage transient the series fusible resistors will blow (become high impedance), like standard fuses, to protect the user and the instrumen t. Most measuring functions through this terminal will th en be an open circuit. The seri es fusible resistors and the spark gaps should only be replaced by qualified technician.
Refer to the WARRANTY section for obtaining warrant y or repairing service. Battery and Fuse replacement Battery use: Single 9V battery NEDA1604, JIS006P or IEC6F22; or 9V alkaline battery NEDA 1604A, JIS6AM6 or IEC6LF22 Fuses: Fuse (FS1) for. Lift the batt ery access door and thus the battery compartmen t up. Replace the battery. Re-fasten the screws. Fuse replacement (and also Battery replacement for splash proof version without battery access door): Loosen the 4 screws from the case bottom. Lift the end of the case bottom nearest the input jacks until it unsnaps from the case top. Replace the case bottom, and ensure that all the gaskets are properly seated and the two snaps on the case top (near the LCD side) are engaged. Re-fasten the screws. RANGE AccuracyUp to 20kHz. RANGE Accuracy Burden VoltageFunction Sensitivity RangeV Range: 1050V rms, 1450V peak mV,.A Return Authorization (RA) number must be issu ed before any produc t is returned to Extech. The sender is responsible fo r shipping charges, frei ght, insurance and proper packaging to prevent damage in transit. This w a rranty does not apply to defects resulting from acti on of the user such as misuse, improper wiring, operation outside of specification, improper maintenance or repair, or unauthorized modification. Extech sp ecifically disclaims any implied warranties or merchantabili ty or fitness for a speci fic purpose and will not be liable for any direct, indirect, in cidental or cons equential damages. Extech's total liability is limited to repair or replacement of the product. The warranty set forth above is incl usive and no other wa rranty, whether written or oral, is ex pressed or implied. Calibration and Repair Services Extech offers repair and calibration services for the products we sell. Extech also provides NIST certifi cation for most products. Call the Customer Care Department for info rmation on calibration services available for this product.
Extech re commends that annual calibrations be performed to verify mete r performance and accuracy. This symbol, adjacent to a terminal, indica tes that, under normal use, hazardous v oltages may be presen t Double insulation 1. Improper use of thi s meter can ca use damage, shoc k, injury or death. Read and understand this user manual before operating th e meter. 2. Make sure any cov ers or battery doors are properly close d and ured. 3. Always remove the test leads before re placing the battery or fuse s. 4. Inspect the condition of the test leads a nd the meter itself for any damage before operating the meter. R epair any damage before use. 5. Do not exceed the maximum rated input limit s. 6. Use great care when making mea surements if the v oltages are greater than 25VAC rms or 35VDC. These voltages are considered a shock hazard. 7. Always discharge capacitors an d remove powe r from the dev ice under test before performing Diode, R esistance or Continuity tests. 8. Remove the battery from t he meter if t he meter i s to be sto red for long periods. 9. To avoid electric shock, do not measure AC curre nt on any circuit whose voltage ex ceeds 250V AC. If it should become necessary to re tu rn the in strument for service dur ing or beyond the warranty period, contact the Cu stomer Service Department at (781) 890-7440 ex t. 210 for au thorization or v isit our website at ww w.extech.com fo r contact information. A Return Authorization (RA) number must be issued before any product is returned to Extech. The sender is responsible f or shipping charges, freight, insurance a nd proper packaging to prevent damag e in transit. This warranty does not apply to defe cts resulting from action of the user such as misuse, im proper wiring, operation outside of spe cification, improper maintenance or r epair, or unauthorized modification.
Ex tech specifically disclaim s any implied w a rranties or mer chantability or fitness for a specific purpose and will no t be liable for any direct, indirect, incidental or con sequential damages. Ex tech's total li ability is limited to repair or replacement of the produc t. T he warranty set forth above is inclusive and no o ther warranty, whether written or oral, is ex pressed or implied. User’s Manual MiniT ec TM Series Model MN36 Auto-Ranging Mini MultiMeter 3999 Introduction Congratulations on y our purchase of Ex tech’s MN36 Auto- Ranging Multimeter. Proper use and care o f this meter w ill provide many years of reliable service.Current Measurements CAUTION: Do not make high current measurement s on the 10A scale for longer than 15 se conds follow ed by a 15 minute cool down period. Touch the red te st probe tip to the positive side of the circ uit. 6. Apply power to the cir cuit. 7. Read the current in the display. Resistance Measurements 1. Insert the black test lead banana plug into the nega tive COM jack and the red test lead banana plug into the positiv e ? jack. 2. Set the function sw itch to the ? po sition. 3. T ouch the test probe tip s across the circuit or part und er test. It i s best to disconnect one side of the p art under test so the rest o f the circuit will not interfere with the re sistan ce reading. 4. Read the resist ance in the di splay. Capacitance Measurements 1. Insert the black test lead banana plug into the nega tive COM jack and the red test lead banana plug into the positiv e CA P jack. 2. Turn the ro tary swit ch to th e positi on. 3. Touch the test p robes to the circ uit or d evice under te st and read the capacitance on the display. Frequency Measurements 1. Insert the black test lead banana plug into the negative COM jack and the red test lead banana plug into the positive HZ jack. 2. Turn the rotary switch to the Hz p osition. 3.
Touch the test probes to the circuit or under test an d read the frequency or duty cycle on the display. Temperature Measurements WARNIN G: To avoid electric shock, di sconnect test leads from any source of voltage b efore making a temperature measurement. Be sure that the thermocouple has been removed before changing to an y other measurement function. 1. Insert the type K thermocouple probe i nto the Temp and COM jacks. 2. Turn the ro tary switch to the o F or o C p osition. 3. Read the temperature on the display. If the resistance i s less than approx imately 30.Forw ard voltage w ill indicate 0.4V to 0.7V. Reverse voltage w ill indicate “ OL ”. Shorted devices will indicate near 0mV and an open device will in dicate “ OL ” in both polarities. Data Hold Press the Hold button to freeze the reading in the display. “ H ” will appear in the LCD. Press the key again to release the d isplay. Auto-Ranging The meter will auto range to the op timum range to prov ide the best resolution and accu racy for the input signal. Auto Power Off 1. This meter will automatical ly shut off after approx imately 15 minutes of operation. If the meter shuts off, rotate the f unction switch to OFF and on again (or press the HOLD button) to r esume operation. 2. To disable the auto pow er off, hol d the SELECT butt on while t urning power on or press the SELECT button after auto power off has turned the meter off. This Multimeter is designed to provide y ears of dependable se rvice, if the following care instructions are performed. 1. Keep the meter dry. 2. Use and store the meter in mild ambient condition s. Temperature extremes can shor ten the life of the ele ctronic parts and disto rt or melt plastic parts. 3. Handle the meter gently. Dropping it can damage the el ectronic parts or the case. 4. Keep the meter clean. Wipe the ca se occasionally w ith a damp cloth. DO NOT use chemicals, cl eaning solvents or detergen ts. 5. Use only fresh ba tteries of the recommended size and type.
Remov e old or weak batterie s so they do not leak and damag e the unit. 6. If the meter is to be s tored for a lon g period of tim e, the b atteries should be removed to prevent damage to the unit. UL LISTED The UL mark does not indicate that this product has been evaluated for the accuracy of its readings. Insert the new batteries into the ba ttery holder. 5. Fuse: Remove the old fuse by gently pulling up on it. Install the new fuse by gently pushing it into th e holder. Waltham, MA 02451.
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