USER GUIDE True RMS Multimeter with IR Thermometer Model EX570
Introduction Congratulations on your purchase of the Extech EX570 True RMS Autoranging Multimeter. This meter measures AC/DC Voltage, AC/DC Current, Resistance, Capacitance, Frequency, Duty Cycle, Diode Test, and Continuity plus Thermocouple Temperature and InfraRed Temperature. It features a waterproof, rugged design for heavy duty use. Proper use and care of this meter will provide many years of reliable service.
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. Use great care when making measurements if the voltages are greater than 25 VAC rms or 35 VDC. These voltages are considered a shock hazard. Warning! This is a class A equipment.
SAFETY INSTRUCTIONS This meter has been designed for safe use, but must be operated with caution. The rules listed below must be carefully followed for safe operation. 1.
Controls and Jacks 2 1 1. IR Thermometer 2. Laser Pointer 3 4 5 6 3. 40,000 count LCD 4. MAX/MIN button 5. MEMORY button 6. SELECT button 7. Function switch 8. mA, µA and 10A input jacks 7 9. PEAK and RELATIVE button 10. RANGE button 11. HOLD and (Backlight) button 8 12. IR Thermometer button 13. Positive input jack 9 10 11 12 13 14 14. COM input jack Note: Tilt stand and battery compartment are on rear of unit.
Operating Instructions WARNING: Risk of electrocution. High-voltage circuits, both AC and DC, are very dangerous and should be measured with great care. 1. ALWAYS turn the function switch to the OFF position when the meter is not in use. 2. If “OL” appears in the display during a measurement, the value exceeds the range you have selected. Change to a higher range. AC/DC VOLTAGE MEASUREMENTS CAUTION: Do not measure DC voltages if a motor on the circuit is being switched ON or OFF.
AC/DC CURRENT MEASUREMENTS 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. 1. Insert black test lead banana plug into the negative COM jack. 2. For current measurements up to 4000µA DC, set the function switch to the µA position and insert the red test lead banana plug into the µA/mA jack. 3.
CONTINUITY CHECK WARNING: To avoid electric shock, never measure continuity on circuits or wires that have voltage on them. 1. Rotate the function switch to the Ω position. 2. Insert the black lead banana plug into the negative COM jack. Insert the red test lead banana plug into the positive jack. 3. Press the SELECT button to indicate“ " on the display 4. Touch the test probe tips to the circuit or wire you wish to check. 5.
NON-CONTACT INFRARED TEMPERATURE MEASUREMENTS 1. Rotate the function switch to the IR position. 2. Press the SELECT button to select °F or °C. 3. Aim the infrared sensor (top of meter) at the surface to be measured. 4. Press the IRT button to turn on the IR thermometer and laser pointer. The laser pointer identifies the surface spot to be measured. 5. The area of the surface to be measured must be larger than the spot size as determined by the distance to spot size specification. 6.
THERMOCOUPLE TEMPERATURE MEASUREMENTS 1. Rotate the function switch to the TYPE K position. 2. Insert the Temperature Probe into the input jacks, making sure to observe the correct polarity. 3. Press the SELECT button to indicate “ºF” or “ºC” 4. Touch the Temperature Probe head to the part whose temperature you wish to measure. Keep the probe touching the part under test until the reading stabilizes. 5. Read the temperature in the display. Note: The temperature probe is fitted with a type K mini connector.
MEMORY The meter can store and recall up to 3 readings. Storing readings: 1. Press and Hold the MEM button until “MEM1” (with a flashing 1) appears in the display. Memory 1 is ready to accept data. 2. Press and release the MEM button to step through and select memories 2 or 3. 3. Press and Hold the MEM button to store the displayed value into the memory selected. 4. After storing the reading, the meter will return to normal operation. Recalling readings: 1. Press and release the MEM button.
Relative mode The relative measurement feature allows you to make measurements relative to a stored reference value. A reference voltage, current, etc. can be stored and measurements made in comparison to that value. The displayed value is the difference between the reference value and the measured value. 1. Perform the measurement as described in the operating instructions. 2. Press and Hold the REL button to store the reading in the display and the "REL" indicator will appear on the display. 3.
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 battery 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. KEEP THE METER DRY. If it gets wet, wipe it off. 2. USE AND STORE THE METER IN NORMAL TEMPERATURES.
REPLACING THE FUSES WARNING: To avoid electric shock, disconnect the test leads from any source of voltage before removing the meter cover. A B A B A F1 F2 1. Disconnect the test leads from the meter. 2. Remove the battery cover (two “B” screws) and the battery. 3. Remove the six “A” screws securing the rear cover. 4. Gently remove the old fuse and install the new fuse into the holder. 5. Always use a fuse of the proper size and value (0.
Specifications Function Range Resolution DC Voltage 400 mV 0.01 mV 4V 0.0001V 40V 0.001V Accuracy (0.06% reading + 2 digits) 400V 0.01V 1000V 0.1V 400 mV 0.01 mV 4V 0.0001 V 40 V 0.001 V 400 V 0.01 V 1000 V 0.1 V AC Voltage 40 Hz to 65 Hz 66 Hz to 1000 Hz (0.5% rdg + 3 digits) (1% rdg + 3 digits) All AC voltage ranges are specified from 5% of range to 100% of range DC Current 400A 0.01 A 4000A 0.1 A 40mA 0.001 mA 400mA 0.01 mA (1.
Function Range Resolution Resistance 400 0.01 4 k 0.0001 k 40 k 0.001 k 400 k 0.01 k 4 M 0.0001 M 40 M 0.001 M 40 nF 0.001 nF 400 nF 0.01 nF Capacitance Frequency Duty Cycle 4 µF 0.0001 µF 40 µF 0.001 µF 400 µF 0.01 µF 4000 µF 0.1 µF 40000 F 1 µF 40 Hz 0.001 Hz 400 Hz 0.01 Hz 4 kHz 0.0001 kHz 40 kHz 0.001 kHz 400 kHz 0.01 kHz 4 MHz 0.0001 MHz 40 MHz 0.001 MHz 0.1 to 99.90% Accuracy (0.3% reading + 4 digits) (2.0% reading + 20 digits) (3.
Enclosure Diode Test Continuity Check Double molded, Waterproof (IP64) Test current of 0.9mA maximum, open circuit voltage 2.8V DC typical Audible signal will sound if the resistance is less than 35 (approx.), test current <0.35mA PEAK Captures peaks >1ms Memory Store and recall up to 3 values Temperature Sensor Requires type K thermocouple Input Impedance >10MΩ VDC & >3MΩ VAC AC Response True rms ACV Bandwidth 40Hz to 1000Hz IR Spectral response 6 to 16µm IR Emissivity 0.
