User`s Guide Extech EX845 True RMS 1000 Amp Clamp Meter with
Contents
1. You can hand over your used batteries accumulators at collection points in your community or wherever batteries accumulators are sold Disposal Follow the valid legal stipulations in respect of the disposal of the device at the end of its lifecycle 12 EX845 EN V2 3 710 Specifications Funcion Range amp Resolution Accuracy oot reading zai 400 0 AAC 2 5 8d 50 60 Hz 1000 AAC 2 8 5d Dcounem 400 0 ADC 2 5 5d DC Current 1000 ADC 2 8 5d 400 0 mVAC 1 0 10d AC Voltage 4 000 VAC 50 60Hz 40 00 VAC 1 5 5d 400 0 VAC 1000 VAC 2 0 5d 400 0 mVDC 0 8 2d 4 000 VDC DC Voltage 40 00 VDC 1 5 2d 400 0 VDC 1000 VDC 2 0 2d 400 09 1 0 4d 4 000kQ 40 000kQ 1 5 2d 400 0kQ 4 000MQ 2 5 3d 40 00MQ 3 5 5d 4 000nF 5 0 30d 40 00nF 5 0 20d 400 0nF Capacitance 4 000uF 3 0 5d 40 00uF 400 0uF 4 0 10d 4 000mF 10 10d 4 000kHz 1 5 2d requenc eee Sensitivity 100V lt 50Hz 50V 50 to 400Hz 5V 401Hz to 4000Hz Resistance 13 EX845 EN V2 3 710 Function Range and Resolution Accuracy of reading digits Temperature type K Temp IR 4 to 518 F Clamp jaw opening Display Continuity check Diode test Low Battery indication Over range indication Measurement rate Bluetooth range PEAK Thermocouple sensor IR Spectral response IR Emissivity IR distance rati2. 0 the device is shorted 7 EX845 EN V2 3 710 Non Contact InfraRed Temperature Measurements 1 Set the function switch to the IR Temp position 2 Aim the infrared sensor rear of the meter at the surface to be measured 3 Press the button in the center of the rotary function switch to turn on the laser pointer and identify the surface spot to be measured 4 The area of the surface to be measured must be larger than the spot size as determined by the distance to spot size specification 5 Read the temperature in the display Note See the Temperature Units paragraph to select F or C WARNING Do not directly view or direct the laser pointer at C AUTI 0 N an eye Low power visible lasers do not normally present a CARER RADIATION hazard but may present some potential for hazard if viewed amp DO NOT STARE INTO BEAM directly for extended periods of time m DIODE LASER CLASS II LASER PRODUCT IR Spot to Distance Diagram The 8 1 spot to distance ratio determines the size of the measured surface area with respect to the distance the meter is held away from the surface Diameter of spot 1 25cm 2 5cm 7 5cm r A 10cm gt 20cm gt D 60cm n Distance to object IR Measurement Notes 1 The object under test should be larger than the spot target size calculated by the field of view diagram 2 Ifthe surface of the object under test is covered with frost oil grime etc
3. clean before taking measurements 3 Ifan object s surface is highly reflective apply masking tape or flat black paint to the surface before measuring 4 The meter may not make accurate measurements through transparent surfaces such as glass 5 Steam dust smoke etc can obscure measurements 6 To find a hot spot aim the meter outside the area of interest then scan across in an up and down motion until the hot spot is located 8 EX845 EN V2 3 710 Data Hold To freeze the LCD reading press the HOLD button While data hold is active the HOLD icon appears on the LCD Press the HOLD button again to return to normal operation Peak Hold The Peak Hold function captures the peak AC or DC voltage or current The meter can capture negative or positive peaks as fast as 1 millisecond in duration Turn the function switch to the A or V position Use the MODE button to select AC or DC Allow time for the display to stabilize Press and Hold the PEAK button until CAL appears in the display This procedure will zero the range selected Press the PEAK button Pmax will display e O D o The display will update each time a higher positive peak occurs 7 Press the PEAK button again Pmin will display The display will now update and indicate the lowest negative peak 8 To return to normal operation press and hold the PEAK button until the Pmin or Pmax indicator switches off Note If the Function switch position is ch
4. measurements 2 To view the stored value press the DC ZERO button ZERO will flash and the stored value will be displayed 3 To exit this mode press and Hold the ZERO button until ZERO is no longer in the display AC DC Voltage Measurements 1 Insert the black test lead into the negative COM terminal and the red test lead into the positive V terminal Set the function switch to the Vac or Voc position Use the MODE button to select AC or DC Voltage Connect the test leads in parallel to the circuit under test ar oN Read the voltage measurement on the LCD display 5 EX845 EN V2 3 710 Resistance Measurements Note Remove power before making resistance measurements 1 Insert the black test lead into the negative COM terminal and the red test lead into the Q positive terminal 2 Set the function switch to the Q position 3 Touch the test probe tips across the circuit or component under test 4 Read the resistance on the LCD display Capacitance Measurements WARNING To avoid electric shock discharge the capacitor under test before measuring If dISC appears in the display remove and discharge the capacitor 1 Set the function switch to the 1 capacitance position 2 Insert the black test lead banana plug into the negative COM jack and the red test lead banana plug into the CAP positive jack 3 Press MODE to zero any stray capacitance 4 Touch the te
5. 0 T B200 300 360 400 Image Edit 1 Entering the camera Preview mode single press of the image store button 2 In Preview mode real time data is no longer streamed to the image but it is displayed in a preview box 3 The data in the box can be applied to the image by pressing the EX845 Bluetooth SEND Backlight button or the ADD button in the camera s preview box 4 Data applied to the image in this way will be enumerated i B60 Image Edit 1 Press the trigger to store the image 2 Recall the image using the recall archive button arrow in a box 3 The real time data is no longer streamed to the image but it is displayed in a preview box 4 The data in the box can be applied to the image by pressing the EX845 Bluetooth Backlight button or the camera s trigger 5 Data applied to the image in this way will be enumerated FCC Part 15 This equipment has been tested and found to comply with the limits for a Class B digital device pursuant to part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference in a residential installation This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instructions may cause harmful interference to radio communications However there is no guarantee that interference will not occur ina particular installation If this equipment does cause harmful interference to ra
6. Mk Q Hz Auto Range mode co a ae ae C Direct Current Alternating F Current Gp ap Max reading l l A Min reading ag mV ee a a a Low battery Milli volts or Volts Voltage Ohms Resistance Amperes Current Farad Capacitance Hertz Frequency Fahrenheit and Celsius units Temperature Unit of measure prefixes nano milli micro mega and kilo Continuity test Diode test Laser pointer Bluetooth active symbol 4 EX845 EN V2 3 710 Operation NOTES Read and understand all Warning and Caution statements in this operation manual prior to using this meter Set the function select switch to the OFF position when the meter is not in use AC Current Measurements WARNING Ensure that the test leads are disconnected from the meter before making current clamp measurements 1 Set the Function switch to the Aac or ADc range 2 Press the trigger to open the jaw Fully enclose only one conductor For optimum results center the conductor in the jaw 3 The clamp meter LCD will display the reading DCA ZERO The DC Zero feature removes offset values and improves accuracy for DC current measurements To perform a zero select ADC and with no conductor in the jaw orrect Incorrect 1 Press the DC ZERO button to c zero the display ZERO will appear in the display The offset value is now stored and removed from all
7. User s Guide EXTECH INSTRUMENTS A FLIR COMPANY Extech EX845 True RMS 1000 Amp Clamp Meter with Bluetooth CE Patented Introduction Congratulations on your purchase of the Extech EX845 CAT IV True RMS 1000A Clamp Meter This meter is supplied in the Meterlink kit and includes a Bluetooth module designed for use with the Flir T B200 T B300 T B360 T B400 or i o60 cameras The combination of a clamp meter and an IR camera is used for electrical power measurement analysis and documentation The EX845 measurement functions include AC DC Voltage AC DC Current Resistance Capacitance Frequency Duty Cycle Diode Test Continuity Type k thermocouple thermometer plus Non Contact IR Temperature Proper use and care of this meter will provide many 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 A This symbol adjacent to a terminal indicates that under normal use hazardous voltages may be present im Double insulation SAFETY NOTES e Do not exceed the maximum allowable input range of any function e Do not apply voltage to meter when resistance function is selected e Set the function switch OFF when the meter is not in use e Remove the battery if meter is to be stored for longer than 60 days WARNINGS e Set function switch to the appropriate position befor
8. anged after a calibration the Peak Hold calibration must be repeated for the new function selected MAX MIN 1 Press the MAX MIN key to activate the MAX MIN recording mode The display icon MAX will appear The meter will display and hold the maximum reading and will update only when a new max occurs 2 Press the MAX MIN key and MIN will appear The display icon MIN will appear The meter will display and hold the minimum reading and will update only when a new min occurs 3 Press the MAX MIN key and a blinking MAX MIN will appear The meter will display the present reading but will continue to update and store the max and min readings 4 To exit MAX MIN mode press and hold the MAX MIN key for 2 seconds Temperature Units F C Units Switch The temperature units selection switch is located in the battery i E compartment To change the units remove the battery door lift out the battery and set the switch for the desired units LCD Backlight Button The LCD is equipped with backlighting for easier viewing especially in dimly lit areas Press the backlight button to turn the a backlight on Press again to turn the backlight off Automatic Power OFF In order to conserve battery life the meter will automatically turn off after approximately 10 minutes To turn the meter on again turn the function switch to the OFF position and then to the desired function
9. dio or television reception which can be determined by turning the equipment off and on the user is encouraged to try to correct the interference by one or more of the following measures Reorient or relocate the receiving antenna Increase the separation between the equipment and receiver Connect the equipment into an outlet on a circuit different from that to which the receiver is connected Consult the dealer or an experienced radio TV technician for help Warning Changes or modifications not expressly approved by the party responsible for compliance could void the user s authority to operate the equipment 11 EX845 EN V2 3 710 Maintenance WARNING To avoid electrical shock disconnect the meter from any circuit remove the test leads from the input terminals and turn OFF the meter before opening the case Do not operate the meter with an open case 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 60 days or more remove the battery and store it separately Battery Replacement A 2 3 4 Remove the Phillips head screw that secures the rear battery door Open the battery compartment Replace the 9V battery Secure the battery compartment You as the end user are legally bound Battery ordinance to return all used batteries and accumulators disposal in the household garbage is prohibited
10. e digital reading will indicate the proper decimal point and value OL and beep Note See the Temperature Units paragraph to select F or C Note The temperature range of the supplied thermocouple probe is 20 to 250 C 4 to 482 F Continuity Measurements 1 Insert the black test lead into the negative COM terminal and the red test lead into the Q positive terminal 2 Set the function switch to the position 3 Use the MODE button to select continuity The display icons will change when the MODE button is pressed 4 Touch the test probe tips across the circuit or component under test 5 Ifthe resistance is lt 40Q a tone will sound Diode Test 1 Insert the black test lead banana plug into the negative COM jack and the red test lead banana plug into the positive jack 2 Turn the function switch to gt F position Use the MODE button to select the diode function if necessary diode symbol will appear on the LCD when in Diode test mode 3 Touch the test probe tips to the diode or semiconductor junction under test Note the meter reading 4 Reverse the test lead polarity by reversing the red and black leads Note this reading 5 The diode or junction can be evaluated as follows If one reading displays a value typically 0 400V to 0 900V and the other reading displays OL the diode is good f both readings display OL the device is open f both readings are very small or
11. e measuring e When measuring volts do not switch to current resistance modes e Do not measure current on a circuit whose voltage exceeds 600V e When changing ranges always disconnect the test leads from the circuit under test A AC ADC 1000A DC AC V DC V AC 1000V DC AC Resistance Capacitance Frequency Diode Test 250V DC AC Type K Temperature 60V DC 24V AC 2 EX845 EN V2 3 710 CAUTIONS e Improper use of this meter can cause damage shock injury or death Read and understand this user manual before operating the meter e Always remove the test leads before replacing the battery or fuses e 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 e Use great care when making measurements if the voltages are greater than 25VAC rms or 35VDC These voltages are considered a shock hazard e Always discharge capacitors and remove power from the device under test before performing Diode Resistance or Continuity tests e Voltage checks on electrical outlets can be difficult and misleading because of the uncertainty of connection to the recessed electrical contacts Other means should be used to ensure that the terminals are not live e If the equipment is used in a manner not specified by the manufacturer the protection provided by the equipment may be impaired e This device is not a toy and must not reach children s hands It c
12. o Input Impedance AC bandwidth AC response Crest Factor Operating Temperature Storage Temperature Operating Humidity Storage Humidity Operating Altitude Battery Auto power OFF Dimensions amp Weight Safety Patent notice 20 to 270 C 4 to 1400 F 3 rdg 9 F 20 to 760 C 8 rdg 5 C 58 to 4 F 2 0 reading or 4 F whichever is gt 2 0 reading or 2 C whichever is gt 43mm 1 7 approx 3 3 4 digits 4000 counts backlit LCD Threshold 40Q Test current lt 0 5mA Test current of 0 3mA typical Open circuit voltage lt 3VDC typical Battery symbol is displayed OL display 2 readings per second nominal 10 meters 32 feet approximately Captures peaks gt 1ms Type K thermocouple required 6 to 16um 0 95 fixed 8 1 10MQ VDC and VAC 50 to 400Hz AAC and VAC True rms AAC and VAC 3 0 in 40A and 400A ranges 1 4 in 1000A range 50 60Hz and 5 to 100 of range 5 C to 40 C 41 F to 104 F 20 C to 60 C 4 F to 140 F Max 80 up to 31 C 87 F decreasing linearly to 50 at 40 C 104 F lt 80 2000meters 7000ft maximum One 1 9V Battery NEDA 1604 After approx 10 minutes 10 6x4 3x2 270x110x50mm 13 6 oz 386g For indoor use and in accordance with the requirements for double insulation to 1EC1010 1 2001 EN61010 1 2001 Overvoltage Category IV 600V and Category III 1000V Pollution Degree 2 U S Patent 7163336 Copyrigh
13. ontains hazardous objects as well as small parts that the children could swallow In case a child swallows any of them please contact a physician immediately e Do not leave batteries and packing material lying around unattended they can be dangerous for children if they use them as toys e Incase the device is going to be unused for an extended period of time remove the batteries to prevent them from training e Expired or damaged batteries can cause cauterization on contact with the skin Always therefore use suitable hand gloves in such cases e See that the batteries are not short circuited Do not throw batteries into the fire e Do not directly view or direct the laser pointer at an eye Low power visible lasers do not normally present a hazard but may present some potential for hazard if viewed directly for extended periods of time 3 EX845 EN V2 3 710 Description Meter Description Mode Peak Range ON oO OS ON Display icons Description HOLD Minus sign 0 to 3999 ZERO P AUTO DC AC MAX MIN mV or V Current clamp Clamp opening trigger Data Hold Button DCA Zero MIN MAX 9 Backlit LCD Display 10 Test lead input jacks 11 IR thermometer and laser pointer rear 12 Bluetooth SEND Backlight Button 13 Laser pointer button 14 Function switch Data Hold Negative reading display Measurement display digits Zero Peak value IR TEMP MAX MIN Pmax Pun amp AUTO HOLD ZERO numF
14. position 9 EX845 EN V2 3 710 Bluetooth Communication The meter includes a Bluetooth module designed to communicate with the Flir T B200 T B300 T B360 T B400 or i o60 cameras The combination of a clamp meter and an IR camera is used for analysis and documentation of temperature and current readings on single and three phase power distribution panels Setup 1 Enable the EX845 bluetooth by pressing and holding the side Bluetooth SEND Backlight button for two seconds On the second beep the bluetooth icon will appear in the display 2 Pair the meter to the camera by following the Pairing Bluetooth devices section in the camera manual 3 Once paired the data from the EX845 will be continuously displayed and updated on the camera display Notes 1 More than one meter can be paired with one camera to observe multiple legs in three phase systems 2 Ifa paired bluetooth device is removed from a camera list perform a camera restore 3 During initialization it can take up to 15 seconds to establish communication and display results 4 The data transmit function works in IR Picture in Picture and Fusion modes it does not work in Digital camera mode 5 If data stops appearing in the display check that the bluetooth icon is active on the meter s display Image Editing A single or series of readings can be applied to a single image by saving and entering the image edit mode 10 EX845 EN V2 3 71
15. st probe tips across the part under test 5 Read the capacitance value in the display 6 The display will indicate the proper decimal point and value Note For very large values of capacitance measurement time can be several minutes before the final reading stabilizes Frequency Measurements 1 Set the function switch to the V Hz Position 2 Press and hold the MODE button to select the Frequency Hz function k Hz will appear in the display 3 Insert the black test lead banana plug into the negative COM jack and the red test lead banana plug into the Hz positive jack Touch the test probe tips across the part under test Read the Frequency value on the display The display will indicate the proper decimal point and value NO oO e Press and hold the MODE button again to return to the voltage mode Hz l 6 EX845 EN V2 3 710 Type K Temperature Measurements WARNING To avoid electric shock be sure the thermocouple probe has been removed before changing to another measurement function Note An open input or a temperature overrange the meter will display Set the function switch to the K Temp position Insert the Temperature Probe into the negative COM and the positive TEMP jacks observing polarity Touch the Temperature Probe tip to the device under test Continue to touch the part under test with the probe until the reading stabilizes Read the temperature on the display Th
16. t 2010 Extech Instruments Corporation a FLIR company All rights reserved including the right of reproduction in whole or in part in any form 14 EX845 EN V2 3 710
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