Introduction
The GVDA GD170D is a professional True RMS AC/DC Digital Clamp Meter designed for versatile electrical measurements. It features a 9999-count display and is capable of measuring AC/DC current up to 1200A, voltage up to 1000V, as well as resistance, capacitance, frequency, temperature, and inductance. This manual provides essential information for the safe and effective use of your device.
Product Features Overview
- NCV Sensor: For non-contact voltage detection.
- Lighting Lamp: Illuminates the measurement area.
- Flashlight Button: Activates the built-in flashlight.
- Trigger: Opens and closes the clamp jaw.
- Knob Switch: Selects measurement functions.
- Function Key: Toggles between sub-functions within a mode.
- Display: Shows measurement readings and indicators.
Safety Information
Please read all safety warnings and operating instructions before using this instrument. Improper use can result in electric shock or damage to the meter. Always adhere to local and national safety codes.
General Safety Guidelines:
- Do not exceed the maximum input values for any function.
- Use caution when working with voltages above 30V AC RMS, 42V peak, or 60V DC. These voltages pose a shock hazard.
- Always disconnect the test leads from the circuit before changing functions.
- Ensure the battery cover is securely closed before operation.
- Do not operate the meter if it appears damaged or if the insulation on the test leads is compromised.
- The device is rated CAT III 1000V.
Setup and Preparation
1. Battery Installation
The GD170D requires three (3) 1.5V AAA batteries (not included). To install or replace batteries:
- Ensure the meter is turned OFF.
- Locate the battery compartment on the back of the meter.
- Use a screwdriver to open the battery cover.
- Insert three AAA batteries, observing the correct polarity (+ and -).
- Replace the battery cover and secure it with the screw.
2. Connecting Test Leads
For voltage, resistance, capacitance, frequency, diode, and continuity measurements, connect the test leads:
- Insert the red test lead into the 'INPUT' jack.
- Insert the black test lead into the 'COM' (common) jack.
For temperature measurements, connect the thermocouple probe to the appropriate jacks as indicated on the meter.
Operating Instructions
Turn the rotary knob to select the desired measurement function. Use the 'FUNC' button to cycle through sub-functions if available within a mode.
1. AC/DC Current Measurement (Clamp Function)
To measure AC or DC current using the clamp jaw:
- Turn the rotary knob to the 'A~' (AC Current) or 'A=' (DC Current) position.
- Press the trigger to open the clamp jaw.
- Enclose only one conductor with the clamp jaw. Ensure the jaw is fully closed.
- Read the current value on the display.
2. AC/DC Voltage Measurement
To measure AC or DC voltage:
- Turn the rotary knob to the 'V~' (AC Voltage) or 'V=' (DC Voltage) position.
- Connect the test leads in parallel to the circuit or component under test.
- Read the voltage value on the display.
3. Resistance Measurement (Ω)
To measure resistance:
- Turn the rotary knob to the 'Ω' position.
- Ensure the circuit is de-energized before connecting the test leads across the component.
- Read the resistance value on the display.
4. Capacitance Measurement (F)
To measure capacitance:
- Turn the rotary knob to the 'F' position.
- Discharge the capacitor completely before connecting the test leads.
- Connect the test leads across the capacitor.
- Read the capacitance value on the display.
5. Frequency Measurement (Hz)
To measure frequency:
- Turn the rotary knob to the 'Hz' position.
- Connect the test leads to the circuit where frequency needs to be measured.
- Read the frequency value on the display.
6. Temperature Measurement (°C/°F)
To measure temperature:
- Turn the rotary knob to the '°C/°F' position.
- Connect the thermocouple probe to the meter's input jacks.
- Place the tip of the thermocouple probe on or near the object whose temperature is to be measured.
- Read the temperature value on the display.
7. Inductance Measurement (H)
To measure inductance:
- Turn the rotary knob to the 'H' position.
- Connect the test leads across the inductor.
- Read the inductance value on the display.
8. Diode Test
To perform a diode test:
- Turn the rotary knob to the diode symbol position.
- Connect the red test lead to the anode and the black test lead to the cathode of the diode.
- The display will show the forward voltage drop. Reverse the leads to check for open circuit.
9. Continuity Test
To check for continuity:
- Turn the rotary knob to the continuity symbol position.
- Connect the test leads across the circuit or component.
- A buzzer will sound and a light will prompt if continuity is detected (resistance below a certain threshold).
10. INRUSH Measurement (Surge Test)
The INRUSH function measures the initial surge current when a device is powered on.
- Turn the rotary knob to the 'Inrush' position.
- Clamp the meter around the power cable of the device.
- Power on the device and observe the peak inrush current reading.
11. VFD Measurement
The VFD (Variable Frequency Drive) function is used to measure voltage and frequency on VFD circuits, providing accurate readings in the presence of harmonic distortion.
- Turn the rotary knob to the 'VFD' position.
- Connect the test leads to the VFD output.
- Read the voltage and frequency values.
12. LOZ Measurement
The LOZ (Low Impedance) function helps eliminate ghost voltages by providing a low input impedance, which can be useful for determining if a circuit is truly de-energized.
- Turn the rotary knob to the 'LOZ' position.
- Connect the test leads to the circuit.
- Read the voltage value.
13. NCV (Non-Contact Voltage Detection)
To detect AC voltage without contact:
- Turn the rotary knob to the 'NCV' position.
- Move the NCV sensor (top part of the clamp jaw) close to the conductor.
- The meter will indicate the presence of AC voltage with a buzzer and light prompts.
14. Live Wire Detecting
To identify live wires:
- Turn the rotary knob to the 'LIVE' position.
- Use the red test lead to touch the conductor.
- The meter will indicate if the wire is live.
Additional Functions:
- Auto-ranging: The meter automatically selects the appropriate measurement range.
- Data Hold (H): Press the 'HOLD' button to freeze the current reading on the display.
- Max/Min Function: Press the 'MAX/MIN' button to record and display the maximum or minimum measured value.
- Flashlight: Press the flashlight button to illuminate the work area.
- Auto Power Off: The meter will automatically power off after 15 minutes of inactivity to save battery life.
Maintenance
Cleaning:
Wipe the meter with a dry, soft cloth. Do not use abrasives or solvents. Keep the input terminals free from dirt and moisture.
Battery Replacement:
When the low battery indicator appears on the display, replace the batteries as described in the "Setup and Preparation" section (Figure 3).
Storage:
If the meter is not to be used for an extended period, remove the batteries to prevent leakage. Store the meter in a cool, dry place, away from direct sunlight and extreme temperatures.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No display/Meter won't turn on | Dead or incorrectly installed batteries | Replace batteries, check polarity. |
| Incorrect readings | Wrong function selected, poor test lead contact, exceeding range | Verify function, ensure good contact, check if measurement is within range. |
| Clamp jaw not closing properly | Obstruction in the jaw mechanism | Inspect and clear any debris from the clamp jaw. |
| Auto Power Off too soon | Normal operation (15 minutes inactivity) | Press any button or turn the rotary knob to reactivate. |
Specifications
| Parameter | Range/Value |
|---|---|
| Display Type | Digital Only (9999 Counts) |
| DC Current | 60A, 600A, 1200A |
| AC Current | 60A, 600A, 1200A |
| DC Voltage | 600mV, 6V, 60V, 1000V |
| AC Voltage | 600mV, 6V, 60V, 750V |
| VFD Voltage | 6V, 60V, 750V |
| Resistance | 600Ω, 6KΩ, 60KΩ, 600KΩ, 6MΩ, 60MΩ |
| Capacitance | 10nF, 100nF, 1000nF, 10uF, 100uF, 1000uF, 10mF, 100mF |
| Frequency | 10Hz, 100Hz, 1000Hz, 10kHz, 100kHz, 10MHz |
| Temperature | -20°C to 1000°C (-4°F to 1832°F) |
| Inductance | 2mH, 20mH, 200mH, 2H, 20H |
| Duty Ratio | 1-99% |
| Clamp Opening Size | 40mm |
| Dimensions | 248 x 96 x 39mm (9.76 x 3.78 x 1.54 inches) |
| Weight (with package) | Approx. 680g |
| Battery | 3 x 1.5V AAA (not included) |
| Certifications | CE, RoHS |
User Tips
- For accurate current measurements, ensure only one conductor passes through the clamp jaw. Measuring multiple conductors carrying current in opposite directions will result in a zero or incorrect reading.
- Always start with a higher range when measuring an unknown value to prevent overloading the meter. The auto-ranging feature simplifies this for most functions.
- When measuring capacitance, always discharge the capacitor before connecting the meter to avoid damage to the meter or the component.
- Utilize the flashlight function in dimly lit environments for better visibility of the measurement area.
Warranty and Support
For detailed warranty information, technical support, or service inquiries, please refer to the official user manual PDF provided by the manufacturer. A digital copy of the user manual can be found at: GVDA GD170D User Manual (PDF).
The product is certified with CE and RoHS standards, indicating compliance with European safety, health, and environmental protection requirements.
