WapoRich RQ-870MR Clamp Multimeter

1. Introduction

The WapoRich RQ-870MR is a rugged, auto-ranging True RMS clamp multimeter designed for professional AC/DC electrical work in residential, commercial, and industrial environments. It offers precise measurements for a wide range of electrical parameters, including AC/DC voltage, AC/DC current, resistance, capacitance, frequency, duty cycle, and temperature. Built-in safety features and a backlit display ensure reliable and convenient operation.

Figure 1: WapoRich RQ-870MR Clamp Multimeter and included accessories.

2. Safety Information

Please read and understand all safety information before operating this device. Failure to follow these instructions may result in electric shock, fire, or serious injury.

• Always ensure the meter is in the correct function and range before making measurements.
• Do not attempt to measure voltages or currents exceeding the maximum specified limits.
• Exercise extreme caution when working with live circuits.
• Inspect test leads and probes for damage before each use. Replace immediately if damaged.
• Do not operate the meter if it appears damaged or is not functioning properly.
• Ensure the battery cover is securely closed before operation.
• This device features full overload protection across all ranges for enhanced safety.

3. Package Contents

Verify that all items are present in the package:

• 1 × WapoRich RQ-870MR Clamp Multimeter
• 2 × Test Leads (Red and Black)
• 1 × Thermocouple Probe
• 1 × Carrying Bag
• 2 × AAA Batteries
• 1 × User Manual (this document)

Figure 2: Contents of the WapoRich RQ-870MR package.

4. Product Overview

Familiarize yourself with the components and controls of your WapoRich RQ-870MR Clamp Multimeter:

Figure 3: WapoRich RQ-870MR Clamp Multimeter labeled diagram.

• Function Knob: Rotary switch to select measurement functions (OFF, V, ΩCAP, Hz, °C/°F, 200A, 1000A).
• Frequency/Duty Cycle Key: Press this key in the AC/DC voltage range to convert to frequency measurement and Duty cycle measurement.
• Max/Min Value Measurement: Capable of capturing the maximum (MAX) or minimum (MIN) value in changing input signals.
• LCD Display: Digital display with a maximum reading of 3999.
• Relative Value Key (RELΔ): After pressing this key, the current displayed value is stored in memory, and the meter enters the relative value state.
• State Selection Key (SELECT): Press this button to select AC voltage or DC voltage, or other sub-functions within a range.
• Data Hold/Backlight: Short press to hold the displayed data. Long press for 2 seconds to activate/deactivate the backlight function.
• Input Jacks:
  • T+VΩHz Input Jack: Positive input for Voltage, Resistance, Frequency, Capacitance, Diode, and Temperature measurements.
  • COM Input Jack: Common (negative) input for all measurements.
  • T- Input Jack: Negative input for Temperature measurements.

5. Setup

5.1. Battery Installation

The WapoRich RQ-870MR requires 2 AAA batteries (included). To install or replace batteries:

1. Ensure the multimeter is turned OFF.
2. Locate the battery compartment on the back of the meter.
3. Use a screwdriver to open the battery compartment cover.
4. Insert the 2 AAA batteries, observing the correct polarity (+ and -) as indicated inside the compartment.
5. Replace the battery compartment cover and secure it with the screw.

Note: A low battery indicator will appear on the LCD when batteries need replacement.

6. Operating Instructions

This section details how to perform various measurements with your clamp multimeter.

6.1. AC Current Measurement

To measure AC current, use the clamp jaw:

1. Turn the Function Knob to the 200A or 1000A AC current range.
2. Open the clamp jaw by pressing the trigger.
3. Enclose only one conductor (live or neutral) within the clamp jaw. Do not clamp around multiple conductors or a power cord, as this will result in an inaccurate reading of zero.
4. Close the clamp jaw securely.
5. Read the AC current value on the LCD display.

Figure 4: AC Current Measurement using the clamp jaw (45mm jaw opening).

Figure 5: Proper measurement technique for current (single conductor).

6.2. AC/DC Voltage Measurement

1. Insert the red test lead into the T+VΩHz jack and the black test lead into the COM jack.
2. Turn the Function Knob to the 'V' position. The meter will automatically detect AC or DC voltage. If needed, press the 'SELECT' button to manually switch between AC and DC.
3. Connect the test probes across the circuit or component to be measured.
4. Read the voltage value on the LCD display.

6.3. Resistance (Ω) Measurement

1. Insert the red test lead into the T+VΩHz jack and the black test lead into the COM jack.
2. Turn the Function Knob to the 'ΩCAP' position. Press 'SELECT' until 'Ω' is displayed.
3. Ensure the circuit is de-energized before measuring resistance.
4. Connect the test probes across the component.
5. Read the resistance value on the LCD display.

6.4. Capacitance (CAP) Measurement

1. Insert the red test lead into the T+VΩHz jack and the black test lead into the COM jack.
2. Turn the Function Knob to the 'ΩCAP' position. Press 'SELECT' until 'CAP' is displayed.
3. Ensure the capacitor is fully discharged before measurement to avoid damage to the meter.
4. Connect the test probes across the capacitor terminals.
5. Read the capacitance value on the LCD display.

6.5. Frequency (Hz) Measurement

1. Insert the red test lead into the T+VΩHz jack and the black test lead into the COM jack.
2. Turn the Function Knob to the 'Hz' position.
3. Connect the test probes across the circuit where frequency is to be measured.
4. Read the frequency value on the LCD display.

6.6. Temperature (°C/°F) Measurement

1. Insert the thermocouple probe into the T+VΩHz (positive) and T- (negative) jacks.
2. Turn the Function Knob to the '°C/°F' position. Press 'SELECT' to switch between Celsius and Fahrenheit.
3. Place the tip of the thermocouple probe on the object or in the environment whose temperature is to be measured.
4. Read the temperature value on the LCD display.

6.7. Diode Test

1. Insert the red test lead into the T+VΩHz jack and the black test lead into the COM jack.
2. Turn the Function Knob to the 'ΩCAP' position. Press 'SELECT' until the diode symbol is displayed.
3. Connect the red probe to the anode and the black probe to the cathode of the diode.
4. A forward voltage drop will be displayed for a good diode. Reverse the probes; an 'OL' (Overload) reading indicates a good diode.

6.8. Continuity Test

1. Insert the red test lead into the T+VΩHz jack and the black test lead into the COM jack.
2. Turn the Function Knob to the 'ΩCAP' position. Press 'SELECT' until the continuity symbol (buzzer) is displayed.
3. Connect the test probes across the circuit or component.
4. If the resistance is below approximately 50Ω, the buzzer will sound, indicating continuity.

6.9. Special Functions

• Data Hold: Short press the 'HD >2sec' button to freeze the current reading on the display. Press again to release.
• Backlight: Long press the 'HD >2sec' button for 2 seconds to turn the display backlight ON or OFF.
• MAX/MIN: Press the 'MAX/MIN' button to enter Max/Min recording mode. The meter will display the maximum or minimum value detected since the mode was activated.
• Relative Value (RELΔ): Press the 'RELΔ' button to store the current reading as a reference. Subsequent measurements will show the difference from this reference value.
• Auto Power Off (APO): The meter will automatically power off after approximately 15 minutes of inactivity to conserve battery life.

Figure 6: WapoRich RQ-870MR in multiple measurement scenarios.

7. Maintenance

7.1. Cleaning

Wipe the meter with a damp cloth and mild detergent. Do not use abrasives or solvents. Keep the display clean and dry.

7.2. Battery Replacement

Refer to section 5.1 for battery replacement instructions. Always replace all batteries at the same time with new ones of the same type.

7.3. Storage

If the meter is not to be used for an extended period, remove the batteries to prevent leakage and damage. Store the meter in its carrying bag in a cool, dry place, away from direct sunlight and extreme temperatures.

8. Troubleshooting

9. Specifications

10. User Tips

• The backlight feature is very useful in dimly lit environments. A long press on the 'HD >2sec' button activates it.
• Take advantage of the auto-ranging function for quicker measurements, as it automatically selects the appropriate range.
• For accurate AC current readings, always ensure the clamp is around a single conductor, not an entire power cord.
• The included temperature probe is a convenient addition for HVAC or other temperature-sensitive applications.

11. Warranty and Support

This WapoRich RQ-870MR Clamp Multimeter is designed for durability and reliability. For any issues or questions not covered in this manual, please contact the seller or manufacturer's customer support for assistance.

Please retain your proof of purchase for any warranty claims.