Extech Instruments EX845 Скачать руководство пользователя страница 12

 

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FCC Warning  

This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) T
his device may not cause harmful interference, and (2) this device must accept any interference received, incl
uding interference that may cause undesired operation. Changes or modifications not expressly approved by 
the party responsible for compliance could void the user's authority to operate the equipment.  
Do not attempt to disassemble the EX845 instrument by yourself. Non-expert handling of the devices may da
mage them.  
The EXTECH EX845 TRUE RMS 1000 Amp Clamp Meter with IR Thermometer is designed and manufacture
d not to exceed limits for exposure to radio frequency (RF) energy set by the Federal Communications Comm
ission (FCC) of the U.S. Government. These limits are part of comprehensive guidelines and establish permitt
ed levels of RF energy for the general population. The guidelines are based on standards that were develope
d by independent scientific organizations through periodic and thorough evaluation of scientific studies. The s
tandards include a substantial safety margin designed to assure the safety of all persons, regardless of age o
r health. The standards include a substantial safety margin designed to assure the safety of all persons, regar
dless of age or health. The exposure standard for Bluetooth employs a unit of measurement known as the FC
C Part 1.1310(b) (1), FCC Part 2.1093, and SAR.  
The FCC ID label is placed on the instrument clearly visible to all persons at the time of purchase. The user is
 cautioned that changes or modifications not expressly approved by the manufacturer could void the user’s a
uthority to operate the equipment. 
 

Содержание EX845

Страница 1: ...User s Guide Bluetooth Series 1000 Amp Clamp Meters with IR Thermometer AC DC True RMS Clamp meter Patented ...

Страница 2: ...erature AC DC Voltage Resistance Capacitance Frequency Continuity Diode Specific functions DC Current True RMS Type K thermometer DC Zero Auto Power OFF Max Min recording Data Hold Peak Hold Backlit LCD display Careful use of this meter will provide many years of reliable service ...

Страница 3: ...ccuracy CAUTIONS Improper use of this meter can cause damage shock injury or death Read and understand this user manual before operating the meter 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 Use great care when making measurements if ...

Страница 4: ...cons Description HOLD Data Hold Minus sign Negative reading display 0 to 3999 Measurement display digits ZERO DCA Zero P Peak value AUTO Auto Range mode DC AC Direct Current Alternating Current MAX Max reading MIN Min reading Low battery mV or V Milli volts or Volts Voltage Ω Ohms Resistance A Amperes Current F Farad Capacitance Hz Hertz Frequency o F and o C Fahrenheit and Celsius units Temperatu...

Страница 5: ...1 5 5d AC Voltage 50 60Hz True RMS 600 VAC 2 0 5d 400 0 mVDC 0 8 2d 4 000 VDC 40 00 VDC 400 0 VDC 1 5 2d DC Voltage 600 VDC 2 0 2d 400 0Ω 1 0 4d 4 000kΩ 40 000kΩ 400 0kΩ 1 5 2d 4 000MΩ 2 5 3d Resistance 40 00MΩ 3 5 5d 4 000nF 5 0 30d 40 00nF 5 0 20d 400 0nF 4 000µF 40 00µF 3 0 5d 400 0µF 4 0 10d 4 000mF 10 10d Capacitance 40 00mF unspecified 4 000kHz 1 5 2d Frequency Sensitivity 100V 50Hz 50V 50 t...

Страница 6: ... thermocouple required IR Spectral response 6 to 16µm IR Emissivity 0 95 fixed IR distance ratio 8 1 Input Impedance 10MΩ VDC and VAC AC bandwidth 50 to 400Hz AAC and VAC AC response True rms AAC and VAC Crest Factor 3 0 in 40A and 400A ranges 1 4 in 1000A range 50 60Hz and 5 to 100 of range Operating Temperature 41 F to 104 F 5 C to 40 C Storage Temperature 4 F to 140 F 20 C to 60 C Operating Hum...

Страница 7: ...and improves accuracy for DC current measurements To perform a zero select ADC and with no conductor in the jaw 1 Press the DC ZERO button to zero the display ZERO will appear in the display The offset value is now stored andremoved from all measure ments 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 th...

Страница 8: ...ug into the CAP positive jack 3 Press MODE to zero any stray capacitance 4 Touch the test 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 switc...

Страница 9: ...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 If the resistance is 40Ω 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 positi...

Страница 10: ...ot normally present a hazard but may present some potential for hazard if viewed directly for extended periods of time 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 IR Measurement Notes 1 The object under test should be larger than the spot target size calculated by th...

Страница 11: ... 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 The temperature units selection switch is located in the battery 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 vi...

Страница 12: ... ission FCC of the U S Government These limits are part of comprehensive guidelines and establish permitt ed levels of RF energy for the general population The guidelines are based on standards that were develope d by independent scientific organizations through periodic and thorough evaluation of scientific studies The s tandards include a substantial safety margin designed to assure the safety o...

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