Fluke 117 Instruction Manual: A Comprehensive Guide
This guide details the Fluke 117 True-RMS multimeter‚ covering models 110‚ 113-117‚ and their ‘C’ variants.
It’s a resource for safe and effective operation‚ from 2006 to 2026.

The Fluke 117 is a highly regarded True-RMS multimeter‚ designed for electrical professionals needing reliable and accurate measurements. This manual serves as a comprehensive guide for users of the 117‚ alongside related models including 110‚ 113‚ 114‚ 115‚ 116‚ and their ‘C’ versions – ensuring broad applicability.
Fluke Corporation‚ a world leader in electronic test tools since 2006‚ prioritizes portability‚ safety‚ ease-of-use‚ accuracy‚ and stringent quality standards in its products. The 117 series excels in troubleshooting motor drives‚ plant automation‚ power distribution‚ and electromechanical systems‚ even in challenging environments. This manual provides essential information for maximizing the multimeter’s capabilities and ensuring safe operation‚ covering aspects from initial setup to advanced functions;

Key Features and Specifications
The Fluke 117 True-RMS multimeter boasts several key features‚ including reliable voltage and current measurements (AC/DC)‚ resistance testing‚ and continuity verification. It’s designed for professionals working in industrial settings‚ offering durability and accuracy. Fluke emphasizes the tool’s portability and ease of use‚ alongside adherence to rigorous quality standards.
While specific detailed specifications require referencing the official datasheet (PN 2572573‚ revisions from July 2006 onwards)‚ the 117 series is known for its True-RMS capability‚ providing accurate readings on non-sinusoidal waveforms. This manual covers models 110-117 and their ‘C’ counterparts‚ offering a versatile solution for diverse electrical testing needs. Further product information is available at fluke.com.
Safety Information and Precautions
Prior to using the Fluke 117 True-RMS multimeter‚ carefully review the included safety information. This document‚ accompanying models 110-117 and their ‘C’ versions‚ details critical precautions to ensure user safety and prevent damage to the instrument. Always adhere to established safety procedures when working with electrical circuits.
Never exceed the multimeter’s specified input limits. Improper use can create a hazard. Refer to the manual for category ratings and voltage/current limits. Fluke emphasizes the importance of understanding electrical safety standards. For comprehensive safety guidance‚ consult the printed safety information included with your specific model‚ or visit fluke.com for additional resources and program details.

Getting Started with Your Fluke 117
Begin by verifying all components are present after unboxing your Fluke 117. Ensure proper battery installation for accurate readings and optimal performance.
Unboxing and Component Check
Upon receiving your Fluke 117 True-RMS Multimeter‚ carefully inspect the packaging for any signs of damage during shipment. Once opened‚ verify the contents against the included documentation or the Fluke website’s product listing. You should find the Fluke 117 multimeter itself‚ a set of test leads (typically black and red)‚ and potentially a quick start guide or safety information leaflet.
Confirm the presence of the 9V battery‚ though some units may require separate purchase. Check the test leads for any breaks in the insulation or damaged connectors. If any components are missing or appear damaged‚ immediately contact Digi-Key Electronics or Fluke Corporation’s customer support for assistance. Retain the original packaging for potential returns or warranty claims. A complete component check ensures you have everything needed for safe and accurate measurements.
Battery Installation and Replacement
The Fluke 117 multimeter operates on a single 9V battery. To install‚ locate the battery compartment on the rear of the unit – typically secured with a small screw. Remove the screw and carefully open the compartment. Ensure correct polarity when inserting the new 9V battery; the positive (+) terminal should align with the corresponding marking inside the compartment.
A low battery is indicated by a battery icon on the display. Replace the battery promptly to maintain accurate readings. Use only high-quality 9V alkaline batteries for optimal performance. Dispose of used batteries responsibly‚ following local regulations. Regular battery checks‚ especially during frequent use‚ will prevent unexpected interruptions during critical measurements.
Understanding the Display and Controls
The Fluke 117 features a large‚ easy-to-read digital display. It shows the measured value‚ units‚ and various icons indicating measurement mode‚ battery status‚ and other relevant information. The rotary dial selects the desired measurement function – voltage‚ current‚ resistance‚ continuity‚ and diode test.
Input jacks accept test leads for connecting to the circuit under test. The AutoVolt function automatically selects AC or DC voltage measurement. Familiarize yourself with the location and function of each control to ensure accurate and safe operation. Refer to the manual’s diagrams for a clear visual guide to the display and controls.

Basic Measurement Functions
The Fluke 117 excels at core electrical measurements: voltage (AC/DC)‚ current (AC/DC)‚ and resistance. These functions form the foundation for troubleshooting circuits effectively.
Voltage Measurement (AC/DC)

Measuring voltage is a fundamental task with the Fluke 117. This multimeter accurately measures both Alternating Current (AC) and Direct Current (DC) voltage. To begin‚ select the appropriate voltage setting on the rotary dial – either V~ for AC or V for DC. Insert the black test lead into the COM jack and the red test lead into the VΩmA jack. Carefully connect the test leads across the circuit or component whose voltage you wish to measure‚ ensuring proper polarity for DC measurements (red lead to positive‚ black to negative).
The measured voltage will be displayed on the screen. The Fluke 117 is a True-RMS multimeter‚ providing accurate AC voltage readings even with non-sinusoidal waveforms. Always observe safety precautions when working with voltage‚ and never exceed the multimeter’s specified voltage limits.
Current Measurement (AC/DC)
Measuring current with the Fluke 117 requires a different setup than voltage measurement. First‚ select the appropriate current setting on the rotary dial – either A~ for AC or A for DC. It’s crucial to understand that current measurements are series measurements‚ meaning you must break the circuit and insert the multimeter in line with the current flow.
Move the red test lead to the AΩmA jack. Never connect the multimeter directly across a voltage source when in current mode‚ as this will blow the fuse! Carefully break the circuit‚ connect the test leads in series‚ and then power on the circuit. The measured current will appear on the display. Remember the Fluke 117 provides True-RMS AC current readings for accuracy.
Resistance Measurement
To measure resistance with the Fluke 117‚ ensure the circuit is de-energized. This is vital‚ as applying voltage while measuring resistance can damage the multimeter and provide inaccurate readings. Select the resistance (Ω) setting on the rotary dial. Connect the test leads to the component or circuit whose resistance you wish to measure.

The Fluke 117 will display the resistance value in ohms. For very low resistances‚ you may need to use the relative mode (explained elsewhere in this manual) to zero out lead resistance. Higher resistance values may take a few seconds to stabilize. Remember to disconnect power and discharge any capacitors before measuring resistance in a circuit.

Advanced Features and Functions
The Fluke 117 offers continuity testing‚ a diode test‚ and the innovative AutoVolt function. These features enhance troubleshooting and diagnostic capabilities for professionals.
Continuity Testing
Continuity testing on the Fluke 117 verifies electrical circuit connections. When the multimeter detects a closed circuit – meaning a continuous path for current – an audible tone sounds‚ indicating continuity. This function is incredibly useful for identifying broken wires‚ faulty switches‚ or loose connections within a circuit.
To perform a continuity test‚ select the continuity mode (often symbolized by a diode symbol or a sound wave). Connect the test leads to the two points you want to test. If the resistance between the points is very low (typically less than 30 ohms)‚ the buzzer will sound‚ confirming continuity.
Important Note: Always ensure the circuit is de-energized before performing a continuity test to avoid damaging the multimeter or causing personal injury. Disconnect power sources and discharge any capacitors before testing;
Diode Test
The Fluke 117’s diode test function assesses the functionality of diodes and other semiconductor devices. A diode allows current to flow easily in one direction but restricts it in the opposite. This test measures the forward voltage drop across the diode‚ indicating if it’s working correctly.
To perform a diode test‚ select the diode mode (typically symbolized by a diode symbol). Connect the red test lead to the anode (positive side) and the black lead to the cathode (negative side) of the diode. A healthy diode will display a forward voltage drop‚ usually between 0.5V and 0.8V.
If the display shows “OL” (Overload) or zero‚ the diode is likely faulty. Reverse the leads; the display should show “OL”. A reading of zero in both directions indicates a shorted diode.
AutoVolt Function
The Fluke 117’s AutoVolt function automatically selects the appropriate voltage measurement range – AC or DC – simplifying the testing process. This eliminates the need for manual range selection‚ saving time and reducing the risk of incorrect settings.
When AutoVolt is active‚ the multimeter intelligently detects the input signal and displays the voltage accordingly. It’s particularly useful when dealing with unknown voltages or fluctuating signals. The display will clearly indicate whether it’s measuring AC or DC voltage.
To utilize AutoVolt‚ simply connect the test leads to the circuit and select the voltage measurement mode. The Fluke 117 handles the rest‚ providing a convenient and accurate reading.

Troubleshooting Common Issues
Addressing display problems‚ measurement inaccuracies‚ and powering issues ensures optimal Fluke 117 performance. Refer to this section for solutions and maintain functionality.
Display Problems
If the Fluke 117 display is blank or exhibits unusual behavior‚ first check the battery. A low battery is a frequent cause of display issues. Ensure proper battery installation and consider replacement if needed. If the display is dim‚ verify the contrast setting‚ though this model typically auto-adjusts.
For flickering or distorted readings‚ try resetting the multimeter. This can often resolve temporary glitches. If the problem persists‚ inspect the display connector internally (with power off and appropriate safety precautions) for any loose connections.
In rare cases‚ the display itself may be faulty. Contact Fluke support or a qualified technician for repair or replacement. Refer to the official Fluke documentation available at www.fluke.com/productinfo for detailed troubleshooting steps and safety guidelines.
Measurement Inaccuracies
If the Fluke 117 provides inaccurate readings‚ verify the selected measurement function and range. Incorrect settings are a common source of error. Ensure the test leads are securely connected to both the multimeter and the circuit under test‚ checking for damaged leads.
Consider environmental factors; extreme temperatures or electromagnetic interference can affect accuracy. Recalibrate the multimeter periodically‚ especially after heavy use or if accuracy is critical.
For resistance measurements‚ ensure the circuit is de-energized. When measuring voltage or current‚ confirm the correct input terminals are used. Refer to the Fluke documentation (www.fluke.com/productinfo) for specifications and limitations‚ and contact support if inaccuracies persist despite these checks.
Powering Issues
If the Fluke 117 fails to power on‚ first check the battery installation; Ensure the batteries are correctly oriented and making good contact. Replace the batteries with fresh ones of the correct type; low battery power is a frequent cause of failure.
Inspect the battery compartment for corrosion or damage. Clean any corrosion carefully before inserting new batteries. If the unit still doesn’t power up‚ examine the fuse – a blown fuse will prevent operation.
Refer to the ‘Fuse Replacement’ section for instructions. If issues persist after battery and fuse checks‚ consult the Fluke website (www.fluke.com/productinfo) for further troubleshooting or contact Fluke support for assistance.

Maintenance and Care
Regular cleaning and proper storage are vital for longevity. Replace fuses when necessary‚ and check Fluke’s website for software updates and comprehensive resources.
Cleaning and Storage
To ensure the continued accuracy and reliability of your Fluke 117 multimeter‚ regular cleaning is recommended. Periodically wipe the instrument’s exterior with a damp cloth. Avoid using abrasive cleaners or solvents‚ as these can damage the casing and potentially affect internal components.
For storage‚ it’s best to keep the Fluke 117 in a dry‚ dust-free environment. Extreme temperatures and humidity should be avoided. Consider using a protective case to shield the multimeter from physical damage during transport or when not in use. Proper storage will help maintain the instrument’s performance and extend its lifespan‚ ensuring it remains a valuable tool for years to come.
Fuse Replacement
Protecting your Fluke 117 requires correct fuse replacement. Always disconnect test leads and power source before opening the case. Use only Fluke-specified fuses – using incorrect fuses can create a safety hazard and damage the instrument; Refer to the user manual for the correct fuse type and rating for each measurement range.
Carefully remove the old fuse and install the new one‚ ensuring proper orientation. Avoid touching the metal contacts of the fuse. Reassemble the instrument securely before use. Improper fuse replacement voids the warranty and compromises safety. If unsure‚ consult a qualified technician. Regular fuse checks contribute to the longevity and safe operation of your multimeter.
Software Updates and Resources
Fluke continually enhances its instruments through software updates‚ though the 117’s functionality is primarily hardware-based. Visit the official Fluke website (www.fluke.com/productinfo) to access the latest documentation‚ including user manuals‚ quick start guides‚ and application notes. These resources provide valuable insights into maximizing your multimeter’s capabilities.
Fluke’s website also offers a comprehensive support section with FAQs‚ troubleshooting tips‚ and calibration information. Explore online forums and communities for peer-to-peer assistance and shared experiences. Register your Fluke 117 for warranty updates and product notifications. Utilizing these resources ensures optimal performance and extends the lifespan of your reliable testing tool.