User's Manual 99 Washington Street Melrose, MA 02176 Phone 781-665-1400 Toll Free 1-800-517-8431 Visit us at www.TestEquipmentDepot.
Introduction Congratulations on your purchase of the Extech 382252 Earth Ground Resistance Tester Kit. This device can measure Earth Ground Resistance (in 3 ranges), Earth Voltage and Resistance (up to 200kΩ), and AC and DC voltage. This device was designed to meet EN61010-1 safety standards. Careful care and use of this meter will provide years of reliable service.
Meter Description 1. Digital Display – See Display Description below 2. HOLD key – Freezes measurement value on display 1 3. 0 ADJ control- Adjusts Zero value on display 4. Backlight key – Turns on Backlight 2 5. TEST key – Enables Earth Resistance and Earth Voltage Tests 3 6. Function Selector switch – Selects desired range and function 4 5 6 Top View 1. VΩ/C Input 2. P Input 3. COM/E Input 1 Display Description 1. Test status Icon 2. Battery Charge indicator - 3.
Operation 0 Adjustment 1. Connect the test leads to the meter as follows: a. Green lead to the 'E' terminal b. Yellow lead to the 'P' terminal c. Red lead to the 'C' terminal 2. Set the function selector switch to the desired measurement range. 3. Short the 3 test leads together. 4. Press the TEST key. 5. Use the 0 Adjust knob to adjust the displayed reading to 0Ω. 6. Press to TEST key again to end the 0 adjustment process. Test Connection Diagram 1. 382252 Meter 2. Green Test Lead 3.
Earth Voltage Test 1. Set the function on the selector’s switch to the EARTH VOLATAGE position. 2. Confirm that the voltage measurement is less than 10V AC; otherwise accurate Earth resistance measurements cannot be made. If voltage is present (higher than 10V AC), the source of the voltage must be found and corrected before testing can continue. 3. Press to TEST key to end the test. Note the LCD reading. Earth Resistance Test 1. Set the meter's function switch to the desired resistance range. 2.
Maintenance Battery Replacement ' appears on the LCD, the meter's batteries must be When the low battery icon ' changed. 1. Remove power and disconnect the test leads from the meter. 2. Remove the tilt stand from the rear of the meter. 3. Remove the 4 battery compartment screws with a Phillips head screwdriver. 4. Remove the battery compartment cover and replace the six 1.5V 'AA' batteries. 5. Affix compartment cover and tighten screw. 6. Reattach the tilt stand.
Measurement Specifications Measurement Earth Ground Resistance Earth Voltage Range Resolution Accuracy 20Ω 0.01Ω ± (2% reading + 10 digits) 200Ω 0.1Ω 2000Ω 1Ω ± (2% reading + 3 digits) 0 to 200VAC Frequency: 40 to 500Hz 0 to 200kΩ 0.1V ± (3% reading +3digits) 0.1kΩ ± (1% reading +2 digits) Resistance Overload Protection: AC Voltage 0 to 750V 40 Hz to 400Hz Overload Protection: 750 Vrms, Input Impedance: 10MΩ 0 to 1000V DC Voltage 1V 250 Vrms ± (1.2% reading +10 digits) 1V ± (0.
Warranty EXTECH INSTRUMENTS CORPORATION (A FLIR COMPANY) warrants this instrument to be free of defects in parts and workmanship for one year from date of shipment (a six month limited warranty applies to sensors and cables). If it should become necessary to return the instrument for service during or beyond the warranty period, contact the Customer Service Department at (781) 890-7440 ext. 210 for authorization or visit our website www.extech.com for contact information.
