ETCR2100A+ Digital Clamp Ground Earth Resistance Meter Tester

1. Product Overview

The ETCR2100A+ Digital Clamp Ground Earth Resistance Meter Tester is a precision instrument designed for measuring grounding resistance in various applications without the need to disconnect grounding leads or use auxiliary electrodes. It is particularly suitable for loop system measurements and can detect ground faults that traditional methods might miss.

Figure 1.1: ETCR2100A+ Clamp Ground Earth Resistance Meter Tester with included accessories, including the meter, carrying case, standard test ring, and batteries.

Key Features:

• Wide Application: Ideal for measuring grounding resistance in power, meteorology, oilfields, construction, and industrial electrical equipment.
• Advanced Functionality: Measures ground faults undetectable by traditional methods, suitable for applications where conventional meters fail. Accurately measures the combined resistance of the grounding body and lead.
• Measurement Range: Offers a wide measuring range from 0.010Ω to 200Ω with a high resolution of 0.001Ω. The clamp size is Φ32mm.
• Precision Measurement: Utilizes loop resistance measurement, combining voltage and current coils. It measures induced potential and current to calculate resistance using the formula R=E/I for precise results.
• Data Storage: Capable of storing up to 99 sets of measurement data.

Figure 1.2: Visual representation of the meter's key specifications: Resistance Range (0.01Ω-200Ω), Resistance Resolution (0.001Ω), and Clamp Jaw Size (Φ32mm).

Figure 1.3: The ETCR2100A+ features efficient self-test, quick start-up, interference signal recognition, non-intrusive testing, and data storage for up to 99 readings.

2. Setup and Preparation

2.1 Unpacking and Inspection

Upon receiving your ETCR2100A+ tester, carefully unpack all components and inspect them for any signs of damage. Ensure all items listed below are present:

• ETCR2100A+ Clamp Ground Earth Resistance Meter Tester
• Carrying Case
• Standard Test Ring
• User Manual (this document)
• 4 x AA Batteries

Figure 2.1: The ETCR2100A+ meter and its accessories neatly organized within the protective carrying case.

2.2 Battery Installation

The ETCR2100A+ requires 4 AA batteries for operation. Follow these steps to install the batteries:

1. Locate the battery compartment on the back of the meter.
2. Using a screwdriver, carefully open the battery compartment cover.
3. Insert 4 AA batteries, ensuring correct polarity (+/-) as indicated inside the compartment.
4. Replace the battery compartment cover and secure it with the screw.

Figure 2.2: Rear view of the ETCR2100A+ meter, indicating the location of the battery compartment.

Important Notice:

• CAUTION: Risk of electric shock. Be careful before opening case.
• Always use fresh batteries of the specified type.
• Remove batteries if the device will not be used for an extended period to prevent leakage.

3. Operating Instructions

3.1 Powering On/Off

To power on the device, slide the ON/OFF switch to the ON position. The LCD display will illuminate. To power off, slide the switch to the OFF position.

Figure 3.1: Front view of the ETCR2100A+ showing the ON/OFF switch, HOLD button, and memory/alarm controls.

3.2 Ground Resistance Measurement

The ETCR2100A+ is designed to measure loop resistance. It is not intended for single-point grounding measurements unless an artificial loop is created. The measurement principle involves inducing a potential and current to calculate resistance (R=E/I).

1. Ensure the meter is powered on.
2. Open the clamp jaws by pressing the trigger.
3. Place the clamp around the grounding conductor or loop to be measured. Ensure the jaws are fully closed and there are no gaps.
4. Read the resistance value displayed on the LCD screen.
5. Press the HOLD button to freeze the current reading on the display. Press again to release.

Figure 3.2: Close-up view of the clamp jaws, demonstrating the opening mechanism for encircling a conductor.

Note:

• If the reading is unstable, ensure proper contact and that the clamp jaws are clean.
• For detailed instructions on creating an artificial loop for single-point grounding, refer to the full user manual provided with the product.

3.3 Data Storage and Recall

The ETCR2100A+ can store up to 99 sets of measurement data.

1. After a stable measurement is obtained, press the MEM button to save the current reading. The display will indicate the memory location.
2. To recall stored data, press the AL button (or similar button for alarm/memory recall, depending on model variation) and use the arrow keys (< and >) to navigate through stored readings.
3. Refer to the full manual for instructions on clearing memory.

4. Maintenance and Care

4.1 Cleaning

To ensure the longevity and accuracy of your ETCR2100A+ tester:

• Wipe the exterior of the meter with a soft, dry cloth.
• For stubborn dirt, use a slightly damp cloth with a mild detergent, then wipe dry immediately.
• Do not use abrasive cleaners, solvents, or corrosive chemicals, as these can damage the casing and internal components.

4.2 Storage

When not in use, store the meter in its original carrying case in a cool, dry place, away from direct sunlight and extreme temperatures. Remove batteries if storing for extended periods.

5. Troubleshooting

This section addresses common issues you might encounter with your ETCR2100A+ tester.

If the problem persists after trying these solutions, please contact customer support.

6. Technical Specifications

7. Warranty and Support

7.1 Warranty Information

This product comes with a standard manufacturer's warranty. Please refer to the warranty card included in your product packaging for specific terms and conditions, including warranty duration and coverage details. Keep your purchase receipt as proof of purchase for warranty claims.

7.2 Customer Support

For technical assistance, troubleshooting beyond this manual, or warranty inquiries, please contact ETCR customer support. Contact information can typically be found on the manufacturer's official website or on the product packaging.

You may also visit the ETCR Store on Amazon for more information and support resources.