User Guide Dual Channel, True RMS MultiMeter with PC interface
Contents
1. Function Range Accuracy Accuracy Accuracy 20KHz 50KHz 50KHz 100KHz 100KHz 200KHz AC 60 000mV 4 40dgts 4 40dgts Not Specified baba 600 00mV 2 40dgts 2 40dgts 2 40dgts 6 0000V 2 40dgts 2 40dgts 2 40dgts 60 000V 4 40dgts 4 40dgts Not Specified 600 00V Not Specified 1000 0V Not Specified ACV Accuracy note The accuracy specifications for ACV shown in the tables above apply to Channel 1 only To calculate the Channel 2 accuracy add an additional 0 05 Other AC Voltage notes The ACV or ACmV accuracy is specified for 6 to 100 of range from 20kHz to 200kHz True rms crest factor lt 3 at full scale lt 6 at half scale except for the 1000V range where it is 1 5 at full scale and 3 at half scale Input impedance is 10MW Overload protection is 1000VAC Function Range Resolution Accuracy DC Current 600 00pA 0 01yA 0 2 1 0dgts 6000 0pA 0 1pA 0 1 10dgts 60 000mA 0 001mA 0 2 10dgts 600 00mA 0 01mA 0 1 10dgts 1 0000A 0 0001A 0 1 10dgts 10 000A 0 001A 0 3 10dgts 20A for maximum 30 seconds Notes for DC Cu protected by a 1A fast blow fuse rrent The 10A terminal is protected by a 20A fast blow fuse The uA and mA terminals are Function Range Resolution Accuracy Accuracy ACA 50 60Hz 45Hz 1KHz AC Current 600 00pA 0 01pA2. 800 and touch the red test probe tip to the positive side of the circuit Apply power to the circuit Read the current on the display 5 380900 EN v3 1 07 13 Resistance and Continuity Measurements Channel 1 only Note When measuring resistance or continuity Channel 2 is automatically disabled gt 1 Insert the black test lead banana plug into the negative COM jack and the red test lead banana plug into the Channel 1 V QimV CAP P gt jack Set the function switch to the Q position Press the SHIFT key momentarily to select Continuity if required 4 Touch the test probe tips across the circuit or part under test It is best to disconnect one side of the part under test so the rest of the circuit will not interfere with the resistance reading 5 For Resistance tests read the resistance on the display 6 For Continuity tests if the resistance is lt 40Q an audible tone will sound Capacitance Measurements Note When measuring capacitance or diodes Channel 2 is automatically disabled Note If auto range is selected the range is 6000 counts If manual range is selected the range is extended to 9999 counts 1 Insert the black lead into the negative COM jack and the red test lead into the Channel 1 V Q mV CAP gt jack 2 Set the function switch to the CAP Pt position 3 Touch the test leads to the capacitor to be tested and read the measured value Frequency a
3. 0 3 20dgts 0 4 20dgts 6000 0uA 0 1pA 0 3 20dgts 0 4 20dgts 60 000mA 0 001mA 0 3 20dgts 0 4 20dgts 600 00mA 0 01mA 0 3 20dgts 0 4 20dgts 1 0000A 0 0001A 0 3 20dgts 0 4 20dgts 10 000A 0 001A 0 5 20dgts 0 5 20dgts 20A for maximum 30 seconds Function Range Accuracy Accuracy Accuracy 20Hz 45Hz 4KHz 10KHz 140KHz 20KHz AC Current 600 00uA 1 20dgts 2 20dgts 1 20dgts ala 6000 0yA 1 20dgts 2 20dgts 1 20dgts 60 000mA 1 20dgts 0 5 20dgts 1 20dgts 600 00mA 1 20dgts 0 5 20dgts 1 20dgts 1 0000A 1 20dgts 1 5 20dgts Not Specified 10 000A 2 20dgts 1 5 20dgts Not Specified 20A for maximum 30 seconds Notes for AC Current The accuracy is specified for 5 to 100 of range from 45Hz to 20KHz True rms 10A terminal is protected by a 20A fast blow fuse The uA and mA terminals are protected by a 1A fast blow fuse 13 380900 EN v3 1 07 13 Voltage and Current Supplemental Accuracy Specifications for Dual Channel use Add the accuracy figures listed below to the accuracy figures in the tables above for voltage and current when using the meter s two channels simultaneously Note For DC to 400Hz use only ACV DCV ACA DCA CH2 CH2 CH2 CH2 ACV 1 V1 V2 0 5 V1 V2 0 1uA V uA CH2 0 25 CH1 200
4. Battery life Operating Temperature Operating Humidity Storage Temperature Storage Humidity Dimensions Weight Two 5 digit displays on multi function LCD with 30 segment bar graph Fast 20A 1000V fuse 10A input Fast 1A 1000V fuse mA HA input 10 708 records for each channel OL appears on the LCD Battery symbol appears on the LCD 9V Battery 100 hours approx 14 to 104 F 10 to 40 C less than 85 RH 4 to 140 F 20 to 60 C less than 75 RH 8 15 x 4 x 1 85 207 x 101 x 47mm Approx 15 2 oz 430g with battery 11 380900 EN v3 1 07 13 Range Specifications IMPORTANT NOTE The accuracy specifications for Voltage and Current in this section apply to single channel use Refer to the supplemental dual channel specification at the end of this section for accuracy specs that apply to simultaneous dual channel use DC Range Resolution Accuracy for Channel 1 only Voltage Note add 0 02 for channel 2 accuracy Input 60 000mV 0 001mv 0 1 5dgts Impedance 10M0 600 00mV 0 01mV 0 03 3dgts 6 0000V 0 0001V 0 03 3dgts 60 000V 0 001V 0 03 3dgts 600 00V 0 01V 0 03 3dgts 1000 0V 0 1V 0 04 3dgts For DC Voltage Manually select the range to be tested short the meter input and then zero the reading by pressing the ZERO button this applies to Channel 1 and Channel 2 before performing 60mV and 600mV tests F
5. 6 Put the rear cover back in place Secure with the screw WARNING To avoid electric shock do not operate the meter until the battery cover is in place and fastened securely NOTE If your meter does not work properly check the fuses and battery to make sure that they are still good and that they are properly inserted 16 380900 EN v3 1 07 13 Warranty FLIR Systems Inc warrants this Extech Instruments brand device to be free of defects in parts and workmanship for one year from date of shipment a six month limited warranty applies to sensors and cables If it should become necessary to return the instrument for service during or beyond the warranty period contact the Customer Service Department for authorization Visit the website www extech com for contact information A Return Authorization RA number must be issued before any product is returned The sender is responsible for shipping charges freight insurance and proper packaging to prevent damage in transit This warranty does not apply to defects resulting from action of the user such as misuse improper wiring operation outside of specification improper maintenance or repair or unauthorized modification FLIR Systems Inc specifically disclaims any implied warranties or merchantability or fitness for a specific purpose and will not be liable for any direct indirect incidental or consequential damages FLIR s total liability is limited to repair or replacement of the pr
6. EXTECH User Guide INSTRUMENTS Dual Channel True RMS MultiMeter with PC interface Model 380900 eel CH2 CH1 MAXMIN Dual Channel Datalogging True RMS MultiMeter Introduction Congratulations on your purchase of the Extech 380900 Dual Channel Datalogging True RMS MultiMeter This 60 000 count meter features dual input channels with dual display for measuring two voltages or voltage and current simultaneously Additional measurements include Capacitance Frequency Resistance Continuity Duty Cycle and Diode test Over 10 000 measurement readings on both channels can be logged by the meter and later transferred to PC using the RS 232 interface Real time meter PC logging is also supported This meter is shipped fully tested and calibrated and with proper use will provide years of reliable service Safety International Safety Symbols This symbol adjacent to another symbol or terminal indicates the user must refer to the manual for further information This symbol adjacent to a terminal indicates that under normal use hazardous voltages may be present l Double Insulation or Reinforced insulation OVERVOLTAGE CATEGORY III This meter meets the IEC 610 1 95 standard for OVERVOLTAGE CATEGORY III Cat III meters are protected against overvoltage transients in fixed installation at the distribution level Examples include switches in the fixed insta
7. PPM 20 PPM 1y A V mA CH2 0 2mA V A CH2 2mV A mV CH1 5mV A V CH1 DCV 0 5 V1 V2 0 25 0 25 0 25 CH1 20 PPM Legend V1 The voltage reading of Channel 1 V2 The voltage reading of Channel 2 PPM parts per million Function Range Resolution Accuracy Resistance 999 990 0 010 0 19 8dgts 9 9999KQ 0 0001KQ 0 09 3dgts 99 999KQ 0 001KO 0 09 3dgts 999 99KQ 0 01KQ 0 09 3dgts 9 9999MQ 0 0001MQ 0 2 6dgts 40 000MQ 0 001MQ 1 6dgts Capacitance 60 00nF 0 01nF 0 8 5dgts auto range 600 0nF 0 1nF 1 5 5dgts 6 000UF 0 001 uF 1 5 5dgts 60 00UF 0 01uF 2 0 5dgts 490 0uF 0 1uF 3 5 5dgts Capacitance 99 99nF 0 01nF 0 8 5dgts manual range 999 9nF 0 1nF 1 5 5dgts 9 999uF 1uF 1 5 5dgts 99 99uF 0 01uF 2 0 5dgts 999 9uF 0 1uF 3 5 5dgts Frequency TTL 1 000Hz 2MHz 0 01Hz 0 0001MHz 0 005 4dgts Frequency 1 000Hz 200KHz 0 01Hz 100Hz 0 02 4dgts AC sine wave Sine wave sensitivity 100mV mv range 1V V range Duty Cycle 0 001 9 999 0 001 30d KHz 30dgts TTL 1Hz to 10 00 100 00 0 01 3d KHz 3dgts 600KHz Duty Cycle 0 001 100 00 0 001 0 01 Not Specified sine wave 14 380900 EN v3 1 07 13 Maintenance WARNING To avoid electric shock disconnect the test leads from any source of voltage before removing the back cover or the battery or fuse covers WARNING To avoid electric shock do not operate your meter until the batter
8. ds the range selected Change to a higher range Functions used when the meter is in the dual channel mode may take longer to execute due to the fact that the meter is multiplexing Insert the black test lead into the negative COM jack and the red test lead into the Channel 1 or Channel 2 input jack Set the function switch for the selected channel to the VAC VDC mVAC mVDC position Connect the test leads to the circuit to be measured Read the voltage measurement on the display Note When making single channel current measurements set the Channel 1 rotary switch to the OFF position CAUTION Do not make 20A current measurements for longer than 30 seconds Exceeding 30 seconds may cause damage to the meter and or the test leads ts Insert the black test lead into the negative COM jack For current measurements up to 6000uA set the Channel 2 function switch to the LA position and insert the red test lead into the Channel 2 mA pA jack For current measurements up to 600mA set the Channel 2 function switch to the mA position and insert the red test lead into the Channel 2 mA pA jack For current measurements up to 10A set the Channel 2 function switch to the A position and insert the red test lead into the A jack Remove power from the circuit under test and open the circuit at the point where you wish to measure current Touch the black test probe tip to the negative side of the circuit f
9. e impaired Pollution degree 2 Input Limits Function Maximum Input V DC V AC Frequency Duty Cycle 1000V DC AC AAC ADC 20A 30 seconds max Resistance Continuity 1000V DC AC Capacitance 1000V DC AC Diode test 1000V DC AC 3 380900 EN v3 1 07 13 Meter Description 1 oO ON Oa FF ON a x CS 12 13 14 15 16 LCD display Channel 2 value unit and function Channel 1 value unit and function ZERO function Frequency function Record function Manual range key Shift key Max Min Hold key Channel 1 Channel 2 select key Rotary function selection switch for Channel 2 Rotary function selection switch for Channel 1 Common input jack Channel 1 V mV O Cap Diode TTL input jack Channel 2 V mV mA yA input jack 10A input jack 11 ae AZERO MAX MIN REC ERR RS 232 auro g 90 0 om 9 PHASE OOO E v a TILPF a 4 4 l H I Harm KB 10 12 13 14 gt CAT III 1000V 380900 EN v3 1 07 13 Operation Measurement Considerations Notice Read and understand all WARNING and CAUTION statements listed in the safety section of this operation manual prior to using this meter AC DC Voltage Measurements 1 AC DC Current Measurements Channel 2 only Always move the rotary function switch to the OFF position when the meter is not in use If OL appears on the display during a measurement the measurement excee
10. llation and some equipment for industrial use with permanent connection to the fixed installation 2 380900 EN v3 1 07 13 Safety Precautions f 10 11 12 13 Improper use of this meter can cause damage shock injury or death Read and understand this user s manual before operating the meter Make sure any covers are properly closed and secured Always remove the test leads before replacing the battery or fuses Inspect the condition of the test leads and the meter itself for any damage before operating the meter Repair or replace any damage before use Do not exceed the maximum rated input limits Use great care when making measurements if the voltages are greater than 25VAC rms or 35VDC These voltages are considered a shock hazard Always discharge capacitors and remove power from the device under test before performing Capacitance Diode Resistance or Continuity tests Remove the battery from the meter if the meter is to be stored for long periods To avoid electric shock do not measure AC current on any circuit whose voltage exceeds 1000V AC Voltage checks on electrical outlets can be difficult and misleading because of the uncertainty of connection to the electrical contacts Other means should be used to ensure that the terminals are not live The product is intended only for indoor use If the equipment is used in a manner not specified by the manufacturer the protection provided by the equipment may b
11. lock the present range Press the RANGE key again to proceed to other ranges as indicated by the decimal point and units indicators Press and hold the RANGE key for two beeps to return to the AUTO Ranging mode 9 380900 EN v3 1 07 13 Datalogging The 380900 can store up to 10 708 records for both channels These records can be transferred to a PC for storing viewing and plotting using the RS 232 interface cable and Windows software included Data may also be stored directly into the PC using the software Note If a low battery condition is detected during datalogging it will stop automatically Note Capacitance frequency duty cycle and logic functions cannot be recorded in the datalogging or data acquisition modes Setting the Sampling Time 1 Hold the REC button and turn the power on The top display will show the sampling rate in seconds 2 To change the sampling time press the RANGE button once to increment the sampling time by 1 The Sampling rate range is 0 to 253 seconds Note If the sampling time is set at 0 seconds the DMM will record one measurement and stop For dual channel datalogging sampling time should be 2 seconds or greater 3 To increment the sampling time faster hold the RANGE button for more than 2 seconds 4 When approaching the desired sampling time release the RANGE button and then increment by 1 to reach the desired rate 5 Hold the REC button for 2 seconds to return to the DMM functi
12. nd Duty Cycle Measurements When measuring V mV A mA or pA the measurement of frequency and duty cycle can be displayed 1 Select either CH1 or CH2 as indicated by the W icon with the CH1 CH2 key 2 Press the Hz key and the frequency will appear in the lower display and the duty cycle will appear in the upper display for the channel selected 3 Press the Hz key again to exit the function 6 380900 EN v3 1 07 13 TTL Frequency and Duty Cycle Measurements 1 Set the Channel 1 function switch to the mV TTL position 2 Press the SHIFT key momentarily to select the TTL function 3 TTL Frequency and Duty Cycle will be displayed Diode Test 1 Insert the black lead into the negative COM jack and the red test lead into the positive jack 2 Set the function switch to CAP position 3 Press the SHIFT key momentarily to select the diode function 4 Touch the test probe tips to the diode or semiconductor junction you wish to test Note the meter reading 5 Reverse the test lead polarity by reversing the red and black leads Note this reading 6 The diode or junction can be evaluated as follows A If one reading displays a value and the other reading displays OL the diode is good B If both readings display OL the device is open C If both readings are very small or 0 the device is shorted Dual Channel Voltage Measurements Warning Both channels share the same ground Voltages with differen
13. oduct The warranty set forth above is inclusive and no other warranty whether written or oral is expressed or implied Calibration Repair and Customer Care Services FLIR Systems Inc offers repair and calibration services for the Extech Instruments products we sell NIST certification for most products is also provided Call the Customer Service Department for information on calibration services available for this product Annual calibrations should be performed to verify meter performance and accuracy Technical support and general customer service is also provided refer to the contact information provided below Support Lines U S 877 439 8324 International 1 603 324 7800 Technical Support Option 3 E mail support extech com Repair amp Returns Option 4 E mail repair extech com Product specifications are subject to change without notice Please visit our website for the most up to date information www extech com FLIR Commercial Systems Inc 9 Townsend West Nashua NH 03063 USA ISO 9001 Certified Copyright 2013 FLIR Systems Inc All rights reserved including the right of reproduction in whole or in part in any form www extech com 17 380900 EN v3 1 07 13
14. on Clearing Memory There are three methods to clear the memory 1 Hold the REC button and turn the power on The memory will clear and the top display will show the sampling rate in seconds 2 Press the Clear Data Logger Memory button in the software datalogger screen 3 Senda CNTL C via the rs232 interface Start and Stop Datalogging 1 Clear the memory before starting a datalogging session 2 Press the REC button to start datalogging The LCD will show an REC symbol 3 To stop datalogging press and hold the REC button until the REC symbol goes out 4 To resume datalogging press the REC button again Note If any function switches are changed from their original position at the start of datalogging an ERR will be displayed and datalogging will not resume Note The Sample Rate should be set to 2 secs or greater for dual channel datalogging Windows Data Acquisition and Datalogging Software The supplied software is dedicated for use with the Extech Model 380900 Meter The software displays data as a Data List or as an X Y Graph Data is stored as a text file that can then be opened in spreadsheet or other software programs Refer to the separate Software User Guide included on the supplied program CD ROM for software specific instructions 10 380900 EN v3 1 07 13 Specifications General Specifications Display Input Protection Datalogger memory Over range indication Low battery indication Power supply
15. pressed Pre select a different range if required This mode is used to freeze the display and also to enter the Max Min recording mode 1 Press and hold the MAX MIN H key until the meter beeps to freeze the LCD display The J Hold icon will appear on the display 2 Press a second time and the MAX icon will appear with the maximum values recorded since the HOLD mode was entered 3 Press a third time and the MIN icon will appear with the minimum values recorded since the HOLD mode was entered 4 Pressing the key for a single beep will cycle the display through Hold Maximum and Minimum 5 Press and hold the key for two beeps to exit the mode Relative Mode ZERO The Relative Mode permits the user to store the current measurement as a reference value and compare the reference value to subsequent readings In Relative mode the meter displays Actual reading minus the Relative reference value Press the ZERO key to enter the Relative mode The triangular Relative icon and ZERO will appear on the display The display will read zero indicating that the actual and relative measurements are the same As the actual measurement changes the display will indicate the difference between actual and reference zeroed value Press and hold the ZERO key for two beeps to exit the Relative Mode Range Hold Press the RANGE key to enter manual ranging for the channel selected by the W icon When selected the meter will
16. t grounds cannot be measured Note Functions may take longer to execute when in the dual channel mode 1 Insert the black test lead into the negative COM jack and the red test leads into the input jacks for Channel 1 and Channel 2 2 Set the Channel 1 voltage function VAC VDC mVAC or mVDC 3 Set the Channel 2 voltage function VAC VDC mVAC or mVDC 4 Connect the test leads in Parallel to the circuit to be measured 5 Read the voltage measurements on the display 7 380900 EN v3 1 07 13 Dual Channel Voltage and Current Measurement Warning Both channels share the same ground Voltage and current with different grounds cannot be measured Note The COM jack should be used as the CURRENT ground The A jack should be used as the VOLTAGE ground The two grounds are connected internally by a fuse Set the Channel 1 voltage function VAC VDC mVAC or mVDC Set the Channel 2 current function ACA DCA ACmA DCmA ACuA or DCA Insert the test leads into the input jacks Connect the test leads in PARALLEL to the voltage circuit to be measured and connect the test leads in SERIES with the current to be measured 5 Read the voltage and current measurements on the display PUR LN S Load 8 380900 EN v3 1 07 13 Advanced Functions MAX MIN Hold Function Note The meter will exit autoranging and hold the present range when the MAX MIN H key is
17. unction Range Resolution Accuracy Accuracy 50 60Hz 45Hz 1KHz AC Voltage 60 000mV 0 001mV 0 1 20dgts 0 3 20dgts 600 00mV 0 01mV 0 1 20dgts 0 3 20dgts 6 0000V 0 0001V 0 1 20dgts 0 3 20dgts 60 000V 0 001V 0 1 20dgts 0 3 20dgts 600 00V 0 01V 0 1 20dgts 0 5 20dgts 1000 0V 0 1V 0 1 20dgts 2 30dgts 0 400V 1000 0 1V 0 1 20dgts 45Hz 400Hz 400 1000V 2 30dgts For AC Voltage Manually select the range to be tested short the meter input and then zero the reading by pressing the ZERO button this applies to Channel 1 and Channel 2 before performing 60mV and 600mV tests Accuracy note The accuracy specifications for ACV shown in the table above apply to Channel 1 only To calculate the Channel 2 accuracy add an additional 0 05 Function Range Accuracy Accuracy Accuracy 20Hz 45Hz 1KHz 10KHz 10KHz 20KHz AC 60 000mV 0 8 25dgts 2 20dgts 2 5 20dgts vonage 600 00mV 0 8 25dgts 1 20dgts 2 5 20dgts 6 0000V 0 8 25dgts 1 20dgts 2 0 20dgts 60 000V 0 8 25dgts 1 20dgts 2 0 20dgts 600 00V 0 8 25dgts 5 20dgts Not Specified 0 400V 600 00V 0 8 25dgts Not Specified Not Specified 400 600V 1000 0V 0 8 25dgts 2 40dgts Not Specified 0 400V 1000 0V 0 8 25dgts Not Specified Not Specified 400 1000V 12 380900 EN v3 1 07 13
18. y and fuse covers are in place and fastened securely This MultiMeter is designed to provide years of dependable service if the following care instructions are performed 1 2 KEEP THE METER DRY If it gets wet wipe it off USE AND STORE THE METER IN NORMAL TEMPERATURES Temperature extremes can shorten the life of the electronic parts and distort or melt plastic parts HANDLE THE METER GENTLY AND CAREFULLY Dropping it can damage the electronic parts or the case KEEP THE METER CLEAN Wipe the case occasionally with a damp cloth DO NOT use chemicals cleaning solvents or detergents USE ONLY FRESH BATTERIES OF THE RECOMMENDED SIZE AND TYPE Remove old or weak batteries so they do not leak and damage the unit IF THE METER IS TO BE STORED FOR A LONG PERIOD OF TIME the batteries should be removed to prevent damage to the unit 15 380900 EN v3 1 07 13 Battery and Fuse Installation WARNING To avoid electric shock disconnect the test leads from any source of voltage before removing the battery cover 1 Turn power off and disconnect the test leads from the meter Remove the protective rubber holster Open the rear battery and fuse cover by removing the screw using a Phillips head screwdriver 4 Insert the battery into battery holder observing the correct polarity 5 For fuse replacement gently remove the old fuse and install the new fuse into the holder Always use a fuse of the proper size and value
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