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Summary of Contents for Extech Instruments EX845
- Page 1 User's Guide Bluetooth Series 1000 Amp Clamp Meters with IR Thermometer AC/DC True RMS Clamp meter Patented...
- Page 2 Introduction 1000A True RMS AC/DC Current Clamp models measure: Infrared Temperature 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.
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Page 3: Safety Notes
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 Double insulation SAFETY NOTES •... - Page 4 Description eter 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.
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Page 5: Specifications
Specifications Function Range & Resolution Accuracy (% of reading + digits) AC Current 400.0 AAC ± (2.5% + 8d) 50/60 Hz 1000 AAC ± (2.8% + 5d) True RMS 400.0 ADC ± (2.5% + 5d) DC Current 1000 ADC ± (2.8% + 5d) 400.0 mVAC ±... - Page 6 Function Range and Resolution Accuracy (% of reading + digits) -4 to 1400 ± (3%rdg + 9 Temperature (type-K) -20 to 760 ± (3%rdg + 5 ± 9 °F -58 to -4°F ±2.0% reading or ± 4°F whichever is > Temp (IR) -4 to 518°F ±5°C...
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Page 7: Operation
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/DC Current Measurements WARNING: Ensure that the test leads are disconnected from the meter before making current clamp measurements. - Page 8 Resistance Measurements Note: Remove power before making resistance measurements Insert the black test lead into the negative COM terminal and the red test lead into the Ω positive terminal. Set the function switch to the Ω position. Touch the test probe tips across the circuit or component under test. Read the resistance on the LCD display.
- Page 9 Type K Temperature Measurements 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.
- Page 10 Non-Contact InfraRed Temperature Measurements Set the function switch to the IR Temp position. Aim the infrared sensor (rear of the meter) at surface to be measured. 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.
- Page 11 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.
- Page 12 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.
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