Extech Instruments 382152 User Manual

User's Manual
Earth Ground Resistance Tester
Model 382152
Introduction
Congratulations on your purchase of the Extech Earth Ground Resistance Tester. This
device can measure resistance (in 3 ranges) and AC voltage to 200V. 2mA constant
current test signal permits earth resistance tests without tripping current breakers in the
circuit under test. Single, momentary tests or automatic 3-minute tests can be selected.
This device was designed to meet IEC-1010 (EN 61010) safety standards.
Earth Ground Resistance Testers are useful for:
• Estimating ground resistance of a proposed substation or transmission tower.
• Computing inductive coupling between neighboring power and communication
circuits.
• Designing cathode protection systems.
• Geological surveys.
Careful use of this meter will provide years of reliable service.

Extech Instruments 382152 Specifications

General

Model	382152
Category	Measuring Instruments
Type	Multimeter
AC Voltage	750V
DC Voltage	1000V
Resistance	40 MΩ
Continuity	Yes
Diode Test	Yes
Frequency	10 MHz
Sound Level Accuracy	±1.5 dB
Frequency Response	31.5 Hz to 8 kHz
Power Supply	9V battery
Sound Level Measurement Range	30dB to 130dB
Weighting Networks	A, C
Time Weighting	Fast, Slow
Display	LCD
Temperature Range	-40°C to 1000°C (-40°F to 1832°F)
Temperature Resolution	0.1°C / 0.1°F

Summary

Introduction

Safety Information

Environmental Safety

Guidelines for safe operation regarding precipitation, installation category, pollution degree, altitude, and ambient conditions.

Safety Symbols

Explanation of key safety symbols used to warn users about potential hazards and ensure safe usage.

Specifications and Meter Details

Measurement and Range Specifications

Details the measurement ranges, resolutions, and accuracy for Earth Ground Resistance and Earth Voltage.

Meter Description

Identifies and describes the function of each control and display element on the meter.

Operation and Testing Procedures

Test Preparation and Setup

Provides step-by-step instructions for connecting test leads and preparing the meter for testing.

Earth Voltage Test Procedure

Details the procedure for measuring earth voltage, including setup and test execution.

Earth Resistance Test Procedure

Outlines the steps for performing earth resistance tests using momentary or automatic modes.

Data Hold Function

Explains how to freeze and retain the latest measurement reading on the LCD display.

Maintenance and Services

Battery Replacement

Instructions for replacing the meter's batteries when the low battery icon appears.

Cleaning and Storage Guidelines

Recommendations for cleaning the meter's case and proper storage when not in use.

Calibration and Repair Services

Information on obtaining repair, calibration, and NIST certification services for Extech products.