Extech EX840 - Manuals - manualsarea.com

Page 2 - International Safety Symbols; Function Maximum

EX840-EU-EN v5.5 11/13 2 Introduction Congratulations on your purchase of the Extech EX840 CAT IV True RMS 1000A Clamp Meter. This meter measures AC/DC Voltage, AC/DC Current, Resistance, Capacitance, Frequency, Diode Test, Continuity, Type k thermocouple thermometer plus Non-Contact IR Temperature....

Page 3 - CAUTIONS; Do not directly view or direct the laser pointer at an eye.

EX840-EU-EN v5.5 11/13 3 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 itse...

Page 4 - Description; Meter Description

EX840-EU-EN v5.5 11/13 4 Description Meter Description 1. Current clamp 2. Clamp opening trigger 3. Data Hold Button 4. Mode 5. Peak 6. Range 7. DCA Zero 8. MIN/MAX 9. Backlit LCD Display 10. Test lead input jacks 11. IR thermometer and laser pointer (rear) 12. Backlight Button 13. Laser pointer but...

Page 5 - Operation; AC Current Measurements; AC/DC Voltage Measurements; Correct

EX840-EU-EN v5.5 11/13 5 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 disco...

Page 6 - Resistance Measurements; COM; Capacitance Measurements; dISC; Frequency Measurements

EX840-EU-EN v5.5 11/13 6 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  positive terminal. 2. Set the function switch to the  position. 3. Touch the test probe tips acros...

Page 8 - Non-Contact InfraRed Temperature Measurements; Set the function switch to the; IR; Read the temperature in the display.; WARNING: Do not directly view or direct the laser pointer at an eye.; down motion) until the hot spot is located.; Distance to object

EX840-EU-EN v5.5 11/13 8 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 id...

Page 10 - Maintenance; Cleaning and Storage; EU Battery ordinance; ) to return all used; disposal in the household garbage is prohibited!; You can hand over your

EX840-EU-EN v5.5 11/13 10 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...

Page 11 - Specifications

EX840-EU-EN v5.5 11/13 11 Specifications Function Range & Resolution Accuracy (% of reading + digits) AC Current 50/60 Hz 400.0 AAC ± (2.5% + 8d) 1000 AAC ± (2.8% + 5d) DC Current 400.0 ADC ± (2.5% + 5d) 1000 ADC ± (2.8% + 5d) AC Voltage 50/60Hz 400.0 mVAC ± (1.0% + 10d) 4.000 VAC ± (1.5% + 5d) ...

Page 12 - ISO

EX840-EU-EN v5.5 11/13 12 Function Range and Resolution Accuracy (% of reading + digits) Temperature (type-K) -4 to 1400 o F ± (3%rdg + 9 o F) -20 to 760 o C ± (3%rdg + 5 o C) Temp (IR) -58 to -4  F  9  F -4 to 518  F  2.0% reading or  4  F whichever is > -50 to -20  C  5  C -20 to 270 ...