Hioki 3284 User Manual (English)

Questions and Answers:

C
Carolyn HamiltonSep 8, 2025
What to do if the measured value is larger than the estimated value on Hioki Measuring Instruments?
- P
  Peter GarciaSep 8, 2025
  If your Hioki Measuring Instruments show a measured value larger than expected, verify that you're using the correct range. Examine the waveform using the MON output function to ensure only the estimated frequency is present. Confirm the counter was reset with 0ADJ/RESET before peak measurement. Check for nearby magnetic fields, electrical fields, or noise sources. A power supply change from battery to AC adapter (like after a blackout) can also cause this issue.
C
Chelsea CruzSep 9, 2025
What to do if the measured value is smaller than the estimated value on Hioki Measuring Instruments?
- K
  Kristina StoneSep 10, 2025
  If your Hioki Measuring Instruments display a measured value smaller than expected, ensure the clamp sensor is firmly closed. Verify the measured circuit's frequency is within the specifications. Confirm you've followed the auto-zero adjustment and zero-cancel correction procedures. Ensure you're using the correct mode. Check that the peak value and crest factor are below the circuit dynamic values in the specifications. Also, ensure the battery warning annunciator is off.
C
Catherine FreemanSep 12, 2025
How to fix counter when it doesn't become zero on Hioki Measuring Instruments?
- C
  ckingSep 12, 2025
  If the counter on your Hioki Measuring Instruments doesn't reset to zero, use the auto-zero adjustment function (2.5.1) if you are in DC A, AC+DC A or DC V modes. If you are in AC A, AC V or AC+DC V mode, use the zero-cancel correction function (2.5.2). If this occurs in AC + DC A mode after performing the auto-zero adjustment, perform the zero cancel correction function (2.5.2).
C
Cheryl MillerSep 13, 2025
What to do if voltage cannot be measured on Hioki Measuring Instruments?
- E
  erika17Sep 13, 2025
  If your Hioki Measuring Instruments indicate a voltage measurement failure, check the test leads for any broken wires.

Hioki 3284 Specifications

General

Brand	Hioki
Model	3284
Category	Measuring Instruments
Language	English

Summary

Introduction

Shipping Check

Check the 3284 Unit and the Supplied Accessories

Verification of main unit, supplied accessories, and optional items.

Safety

Safety Symbols

Explains the meaning of safety symbols used in the manual.

Measurement Categories

Explains measurement categories (CAT II, III, IV) for safe instrument use.

Attentions During Use

Chapter 1 Product Outline

1.1 Product Outline

Overview of the HIOKI 3284 CLAMP ON AC/DC HiTESTER's capabilities.

1.2 Features

Highlights the key features and capabilities of the instrument.

1.3 Parts and Functions

Identifies and explains the function of each part of the instrument.

Chapter 2 Measurement Procedure

2.1 Preparations

Steps required before performing measurements, including battery installation.

2.2 Current Measurement

Core procedures for measuring current with the clamp sensor.

2.2.1 Measuring DC Current (DC A)

Procedure for measuring DC current using the clamp sensor.

2.2.2 Measuring AC Current (AC A)

Procedure for measuring AC current using the clamp sensor.

2.2.3 Measuring AC/DC Current (AC+DC A)

Procedure for measuring AC+DC current using the clamp sensor.

2.2.4 Peak Hold Measurement

How to perform peak hold measurements for current.

2.2.5 Output Function

How to use the output function for recording or waveform monitoring.

2.3 Voltage Measurement

Core procedures for measuring voltage using test leads.

2.3.1 Measuring DC Voltage (DC V)

Procedure for measuring DC voltage using test leads.

2.3.2 Measuring AC Voltage (AC V)

Procedure for measuring AC voltage using test leads.

2.3.3 Measuring AC/DC Voltage (AC+DC V)

Procedure for measuring AC+DC voltage using test leads.

2.3.4 Peak Hold Measurement

How to perform peak hold measurements for voltage.

2.4 Frequency Measurement

Measurement procedures for frequency.

2.4.1 Frequency Measurement in Current Mode

How to measure frequency in current mode.

2.4.2 Frequency Measurement in Voltage Mode

How to measure frequency in voltage mode.

2.4.3 Output Function For Frequency

Details on using the output function for frequency measurements.

2.5 Auto-Zero-Adjustment/Zero-Cancel Correction Function

Essential functions for accurate zeroing and calibration.

2.5.1 Auto-Zero-Adjustment Function

Function for automatically adjusting internal circuit offsets for accurate zeroing.

2.5.2 Zero-Cancel Correction Function

Function to correct zero errors when auto-zero fails.

2.6 Data Hold Function

Freezes the displayed value for easy reading.

2.7 Alteration of Counter Updates

Settings to change display update rates.

2.7.1 SLOW mode

Slows down screen updates for easier reading of fluctuating values.

2.7.2 FAST mode

Speeds up screen updates for measuring rapid changes.

2.8 Recording Function

Records maximum, minimum, and average values during measurement.

Chapter 3 Specifications

3.1 Measurement Specifications

Detailed specifications for measurement accuracy and ranges.

3.1.1 Current Measurement Specifications

Accuracy and range specifications for current measurements.

3.1.2 Voltage Measurement Specifications

Accuracy and range specifications for voltage measurements.

3.2 General Specifications

General specifications including functions, display, and physical attributes.

Chapter 4 Battery Replacement

Chapter 5 AC Adapter (Optional) Use

Chapter 6 Attaching The Hand Strap

Chapter 7 Troubleshooting

Symptom/Remedy Table

Common symptoms and their remedies for troubleshooting the unit.

Chapter 8 Service

Related product manuals

Hioki 3284 User Manual

Table of Contents