Introduction
The Fieldpiece SC620 is a professional-grade loaded clamp multimeter designed for HVACR technicians. It provides comprehensive electrical measurements including AC/DC voltage, AC current, DC microamps, frequency, temperature, and capacitance. This manual provides essential information for safe and effective operation of your SC620 multimeter. Please read this manual thoroughly before using the device.

Package Contents
The Fieldpiece SC620 package typically includes:
- SC620 Clamp Multimeter
- Test Leads with Alligator Clips
- 9V Battery (included)
- User Manual (this document)
Product Features
The Fieldpiece SC620 offers a range of features for HVACR diagnostics:
- Measures Volts AC/DC
- Measures 400 Amps AC
- Measures Microamps DC for flame diode tests
- Measures Frequency via leads and clamp
- Non-contact voltage (NCV) indicator
- Swivel head for easy access in tight spaces
- High-voltage LED and beeper for safety
- Continuity warning
- Lead holder with detachable leads and alligator probe tips
- Temperature and Capacitance measurements
Setup
1. Battery Installation
The SC620 multimeter requires one 9V battery for operation. The battery is typically included with the device. To install or replace the battery:
- Locate the battery compartment cover on the back of the multimeter.
- Use a screwdriver to open the compartment.
- Insert a new 9V battery, observing the correct polarity (+/-).
- Securely close the battery compartment cover.
2. Connecting Test Leads
Connect the red test lead to the VΩmA input jack and the black test lead to the COM input jack. Ensure the connections are firm. For current measurements using the clamp, no lead connection is required for the primary measurement, but leads may be used for other functions simultaneously.
Operating Instructions
1. Power On/Off
Rotate the function dial to any measurement setting to power on the multimeter. To power off, rotate the dial to the 'OFF' position.
2. AC/DC Voltage Measurement
To measure voltage:
- Rotate the function dial to the 'V~' (AC Voltage) or 'V=' (DC Voltage) position.
- Connect the test leads to the circuit in parallel.
- Read the voltage value on the display.
3. AC Current Measurement (Clamp)
To measure AC current:
- Rotate the function dial to the 'A~' (AC Amps) position.
- Open the clamp jaw and enclose a single conductor of the circuit.
- Ensure the jaw is fully closed.
- Read the current value on the display.
4. DC Microamps Measurement
To measure DC microamps (e.g., for flame diode tests):
- Rotate the function dial to the 'µA=' (DC Microamps) position.
- Connect the test leads in series with the component to be measured.
- Read the microampere value on the display.
5. Resistance and Continuity
To measure resistance or check continuity:
- Rotate the function dial to the 'Ω' (Resistance) position.
- Connect the test leads across the component.
- For continuity, the meter will beep if a low resistance path is detected.
6. Frequency Measurement
The SC620 can measure frequency via leads or clamp. Rotate the function dial to the 'Hz' position and follow the appropriate connection method.
7. Non-Contact Voltage (NCV)
Press the NCV button to activate the non-contact voltage detection feature. Hold the tip of the meter near a live AC voltage source. The meter will indicate the presence of voltage with an LED and an audible beep.
8. Temperature Measurement
Connect a Type K thermocouple (if included, typically sold separately or as part of a kit) to the designated temperature input jacks. Rotate the function dial to the 'TEMP' position to measure temperature.
9. Capacitance Measurement
To measure capacitance:
- Rotate the function dial to the 'nF' (Capacitance) position.
- Ensure the capacitor is discharged before connecting the test leads.
- Connect the test leads across the capacitor.
- Read the capacitance value on the display.
Maintenance
1. Cleaning
Wipe the multimeter with a damp cloth. Do not use abrasive cleaners or solvents. Ensure the device is dry before storage or use.
2. Battery Replacement
Replace the 9V battery when the low battery indicator appears on the display. Refer to the 'Battery Installation' section for instructions.
3. Storage
Store the multimeter in a cool, dry place, away from direct sunlight and extreme temperatures. If storing for extended periods, remove the battery to prevent leakage.
Troubleshooting
1. No Display or Faint Display
- Check battery charge. Replace the 9V battery if low.
- Ensure the function dial is not in the 'OFF' position.
2. Incorrect Readings
- Verify test lead connections are secure and correct for the measurement type.
- Ensure the correct function and range are selected.
- Check for damaged test leads.
- For current measurements, ensure only one conductor is clamped.
3. No Continuity Beep
- Ensure the meter is in the continuity mode.
- Check for an open circuit or high resistance in the component being tested.
Specifications

| Specification | Value |
|---|---|
| Model Number | SC620 |
| Dimensions | 3.8 x 3.2 x 14.6 inches |
| Weight | 1.7 Pounds |
| Power Source | 1 x 9V Battery (included) |
| Measurement Type | Digital |
| Color | Black, Gray, Yellow |
| Manufacturer | Fieldpiece |
| ASIN | B00KLYJS76 |
Warranty and Support
Warranty Information
For detailed warranty information, please refer to the documentation provided with your purchase or visit the official Fieldpiece website. Keep your proof of purchase for warranty claims.
Customer Support
If you encounter any issues or have questions regarding your Fieldpiece SC620 multimeter, please contact Fieldpiece customer support through their official website or the contact information provided in your product packaging.





