Hioki 3284 - User Manual

Questions and Answers:

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).
N
nicholascunninghamAug 22, 2025
Why is the measured value larger than the estimated value on Hioki Measuring Instruments?
- T
  Theresa CarrilloAug 22, 2025
  If the measured value is larger than expected, ensure you're using the correct range. Examine the waveform using the MON output function to confirm that only the estimated frequency components are present. Verify that the counter has been reset with 0ADJ/RESET before peak measurement. Also, check for magnetic fields, electrical fields, or potential noise sources near the unit. Note that if the power supply switches from battery to AC adapter (e.g., after a blackout), the measured value might be temporarily higher than the actual value.
S
Stephanie GonzalezAug 25, 2025
Why is the measured value smaller than the estimated value on Hioki 3284 Measuring Instruments?
- S
  Stacy CarpenterAug 25, 2025
  If the measured value is smaller than the estimated value, check the clamp sensor is firmly closed and that the frequency of the measured circuit is within the specifications. Also, verify that you're using the proper mode. Ensure that the peak value and crest factor are below the circuit dynamic value provided in the specifications and that the battery warning annunciator is off. Confirm that the proper steps have been taken, according to procedure described in 2.5.1: Auto-zero adjustment function and 2.5.2: Zero-cancel correction function.
A
Alexis LongAug 26, 2025
What to do if the output value is smaller than the estimated value on Hioki Measuring Instruments?
- R
  robinwiseAug 26, 2025
  If the output value is smaller than expected, ensure the 9094 OUTPUT CORD is fully connected and that you've selected the correct output mode (REC or MON). Also, ensure that the previously selected output mode (current or frequency) is not active. Verify that the input impedance of the connected measuring instrument is at least 1 MΩ and that its mode is not AC coupling, or that the filter function is disabled.
N
Nicolas SmithAug 27, 2025
What to do if the output value is larger than the estimated value on Hioki 3284 Measuring Instruments?
- C
  Carlos SmithAug 27, 2025
  If the output value is larger than estimated, check that you've selected the proper output mode (REC or MON) and that the previously selected output mode (current or frequency) is not active. Note that the output value might shift for approximately 10 ms if the power supply changes from battery to AC adapter during MON output on current measurement or REC output on frequency measurement.
J
James HallAug 29, 2025
What to do if the counter doesn't become zero on Hioki 3284 Measuring Instruments?
- J
  Jennifer CoxAug 29, 2025
  If the counter does not reset to zero, use the auto-zero adjustment function (2.5.1) or use the zero-cancel correction function (2.5.2).
J
jacquelinecoxSep 18, 2025
How to fix Hioki Measuring Instruments when the unit does not come on?
- D
  David LopezSep 18, 2025
  If your Hioki Measuring Instruments do not come on, replace the battery.
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.
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.
K
Kendra WilliamsSep 6, 2025
How to fix the Hioki Measuring Instruments unit if it does not come on?
- D
  David CookSep 6, 2025
  If the unit does not come on, replace the battery.

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

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