Hioki HiTESTER 3257-50 Instruction Manual
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Hioki HiTESTER 3257-50 Instruction Manual

Hioki HiTESTER 3257-50 Instruction Manual

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Instruction Manual
3257-50
3257-51
DIGITAL HiTESTER
June 2012 Revised edition 9 3257C981-09 12-06H

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  • Page 1 Instruction Manual 3257-50 3257-51 DIGITAL HiTESTER June 2012 Revised edition 9 3257C981-09 12-06H...

  • Page 3: Table Of Contents

    Contents Introduction ............. 1 Inspection ............... 1 Safety Notes ............2 Usage Notes ............6 Chapter 1 Overview Product Overview ......... 10 Features ..........10 Parts Names and Functions ....11 Chapter 2 Measurement Procedures Pre-Operation Inspection...... 20 Voltage Measurement......22 Frequency Measurement......
  • Page 4 Chapter 4 Specifications General Specifications ......43 Accuracy ..........46 L9207-10 TEST LEAD Specifications ...49 Chapter 5 Maintenace and Service Replacing the Batteries and Fuses ..50 Cleaning ..........52 Service ..........52 Error Message ........52...

  • Page 5: Introduction

    Introduction Thank you for purchasing the HIOKI "3257-50/51 DIGITAL HiTESTER". To obtain maximum perfor- mance from the product, please read this manual first, and keep it handy for future reference. Inspection • When you receive the product, inspect it carefully to ensure that no damage occurred during ship- ping.

  • Page 6: Safety Notes

    Accessories • L9207-10 TEST LEAD ....1 • Instruction Manual ..... 1 3257-50 • R03 Manganese battery .... 2 3257-51 (Supplied with this product, for monitor) • 9378 CARRYING CASE 3257-50 only) • Protective holster 3257-51 only) Safety Notes This manual contains information and warnings essential for safe operation of the product and for maintaining it in safe operating condition.
  • Page 7 Safety Symbols In the manual, the symbol indicates particu- larly important information that the user should read before using the product. symbol printed on the product indicates that the user should refer to a corresponding topic in the manual (marked with the symbol) before using the relevant function.
  • Page 8 The following symbols in this manual indicate the relative importance of cautions and warnings. Indicates that incorrect operation presents an ex- treme hazard that could result in serious injury or death to the user. Indicates that incorrect operation presents a sig- nificant hazard that could result in serious injury or death to the user.
  • Page 9 Measurement categories This product complies with CATIII (1000 V), CATIV (600 V) safety requirements. To ensure safe operation of measurement products, IEC 61010 establishes safety standards for various electrical environments, categorized as CAT II to CAT IV, and called measurement cate- gories.

  • Page 10: Usage Notes

    Usage Notes Follow these precautions to ensure safe operation and to obtain the full benefits of the various func- tions. • To avoid electric shock, do not allow the product to get wet, and do not use it when your hands are wet. •...
  • Page 11 Observe the following to avoid damage to the product. • Installation and Operating Environment Between 0°C and 40°C; 80% RH or less; indoors only. However, it can be safely operated at as low as -10°C. Direct • Do not store or use the product where it could sunlight be exposed to direct sunlight, high temperature or humidity, or condensation.
  • Page 12 • Accurate measurement may be impossible in the presence of strong magnetic fields, such as near transformers and high-current conductors, or in the presence of strong electromagnetic fields such as near radio transmitters. • To avoid battery depletion, turn the function selector OFF after use (the Auto Power Save feature consumes a small amount of current).
  • Page 13 Handling the Cables • Removable sleeves are attached to the metal pins at the ends of the test leads. To prevent a short circuit accident, be sure to use the test leads with the sleeves attached when performing measurements in the CAT III and CAT IV measurement categories .

  • Page 14: Chapter 1 Overview

    1.1 Product Overview Chapter 1 Overview 1.1 Product Overview This measurement product is a multi-functional digital multimeter capable of measuring DC and AC voltages, DC and AC currents, the resistance, and the duty factor, and checking the diode and continuity. Since a true RMS measurement system is used, the measurement product can accurately measure even distorted waveforms.

  • Page 15: Parts Names And Functions

    1.3 Parts Names and Functions 1.3 Parts Names and Functions *: for details, see the following pages LCD display * REC•MEMO H.AUTO/REL Button Button * (Press this button to change to the function indicat- RANGE ed in blue.) Button * For other func- tions, see the fol- lowing pages.
  • Page 16 1.3 Parts Names and Functions LCD(Display) Indicates Recording function Indicates HOLD AUTO/ Indicates Continuity Check function HOLD function Indicates Diode Check function Indicates Relative function Indicates Auto Power Indicates Duty Factor Save is enabled function Frequency units Indicates Auto- Resistance and ranging continuity check function...
  • Page 17 1.3 Parts Names and Functions Function Selector Press REC•MEMO when the function in parentheses is being (Diode Check function) used. Continuity function  A DC/AC current Resistance function function  DC voltage function A DC/AC current function (Duty Factor function) mA DC/AC current (Frequency function...
  • Page 18 1.3 Parts Names and Functions Measure- MEMO RANGE Frequency • ( 1 - 4 ) ment "Hz" lights up MEMO  Measure- RANGE • Duty factor ment ( 1 - 4 ) Quick Reference (application) Example REC•MEMO REC•MEMO : Turn on the power while pressing :Button the button (hold the button down until a beeping sound is generated).
  • Page 19 1.3 Parts Names and Functions Cancel the Auto-Power Save function. (Auto-Power Save function) V/Hz/ Press this button until a REC•MEMO // beeping sound is generated. 40A/A/mA/ Enable the Power Save function: ("APS" Power Function Save lights up) change After mode 10 minutes Check the maximum, minimum, and average values during measurement.
  • Page 20 1.3 Parts Names and Functions L9207-10 TEST LEAD Barrier Sleeve Black Plug Cable Connect to the object being tested. Length 4 mm or less (sleeve attached) (Probe tip) 19 mm or less (sleeve removed) (Metal pin)  Diameter approx. 2 mm Attach to the pins to prevent short circuit accidents.
  • Page 21 1.3 Parts Names and Functions • Removable sleeves are attached to the metal pins at the ends of the test leads. To prevent a short circuit accident, be sure to use the test leads with the sleeves attached when performing measurements in the CAT III and CAT IV measurement categories.
  • Page 22 1.3 Parts Names and Functions Removing and attaching the sleeves The tips of the metal pins are sharp, so take care not to injure yourself. Removing the sleeves Attaching the sleeves Gently hold the bottom Insert the metal of the sleeves and pull pins of the test the sleeves off.

  • Page 23: Chapter 2 Measurement Procedures

    1.3 Parts Names and Functions Measurement Chapter 2 Procedures Observe the following precautions to avoid electric shock. • Always verify the appropriate setting of the function selector before connecting the test leads. • Disconnect the test leads from the mea- surement object before switching the func- tion selector.

  • Page 24: Pre-Operation Inspection

    2.1 Pre-Operation Inspection 2.1 Pre-Operation Inspection Operation Check If the operation check reveals any abnormalities, stop the check immediately and do not use the instrument. Required equipment: • Model 3257-50/51 (this instrument) • Model L9207-10 TEST LEAD • AC power receptacle (100 V AC 50/60Hz commercial power supply) Set the function switch to the continuity check.
  • Page 25 2.1 Pre-Operation Inspection Short the tips of the red and black test leads by touching them together. • Buzzer sounds.  • Value stabilizes around 0 .  • displayed　/The display is unstable. Possible test leads or tester malfunction. Set the function switch to "V" to conduct the ACV. lights.) Insert the test lead tips into the openings of the AC receptacle.

  • Page 26: Voltage Measurement

    2.2 Voltage Measurement 2.2 Voltage Measurement • The maximum input voltage is 1000 VDC, 1000 Vrms, or 10 V•Hz. Attempting to measure voltage in excess of the maximum input could destroy the product and result in personal injure or death. •...
  • Page 27 2.2 Voltage Measurement Connect the test leads to AC Voltage Measurement the measurement object, and read the indicated value. Black DC Voltage Measurement Black Selecting the manual Press RANGE range: ("AUTO" is turned off) Reselecting the auto Press RANGE (for at least 1 second) range: ("AUTO"...

  • Page 28: Frequency Measurement

    2.3 Frequency Measurement 2.3 Frequency Measurement • The maximum input voltage is 1000 VDC, 1000 Vrms, or 10 V•Hz. Attempting to measure voltage in excess of the maximum input could destroy the product and result in personal injure or death. •...

  • Page 29: Current Measurement

    2.4 Current Measurement 2.4 Current Measurement • Never apply voltage to the test leads when current measurement function selected. Doing so may damage the prod- uct and result in personal injury. • To avoid electrical accidents, remove power from the circuit before connecting the test leads.
  • Page 30 2.4 Current Measurement 40A Measurement (42A range) Move the function selector to the 40A position. REC•MEMO Select DC ( ) or AC ( ) using REC•MEMO button. Connect the red test lead to ter- minal A.mA, and the black test lead to terminal COM.
  • Page 31 2.4 Current Measurement mA Measurement (40 mA/400 mA range) Move the function selector to the position. Select DC ( ) or AC ( ) using REC•MEMO REC•MEMO button. Connect the red test lead to ter- minal A.mA, and the black test lead to terminal COM.

  • Page 32: Resistance Measurement

    2.5 Resistance Measurement 2.5 Resistance Measurement • Never apply voltage to test leads when the Resistance function is selected. Doing so may damage the product and result in personal injury. • To avoid electrical accidents, remove power from the circuit before measuring. Move the function selector to the ...

  • Page 33: Continuity Check

    2.6 Continuity Check 2.6 Continuity Check • Never apply voltage to test leads when the Continuity function is selected. Doing so may damage the product and result in personal injury. • To avoid electrical accidents, remove power from the circuit before measuring. Move the function selector to the position.

  • Page 34: Diode Check

    2.7 Diode Check 2.7 Diode Check • Never apply voltage to test leads when the Diode Check function is selected. Doing so may damage the product and result in personal injury. • To avoid electrical accidents, remove power from the circuit before measuring. Move the function selector to the position Select Diode (...

  • Page 35: Duty Factor Measurement

    2.8 Duty Factor Measurement 2.8 Duty Factor Measurement • The maximum input voltage is 1000 VDC, 1000 Vrms, or 10 V•Hz. Attempting to measure voltage in excess of the maximum input could destroy the product and result in personal injure or death.
  • Page 36 2.8 Duty Factor Measurement Move the function selector to position, and press REC•MEMO button twice lights up, indicating that a positive slope is being mea- REC•MEMO sured). Press twice To measure a negative slope, press the REC•MEMO button again ( lights up).

  • Page 37: Chapter 3 Additional Functions

    3.1 HOLD AUTO Function Additional Chapter 3 Functions 3.1 HOLD AUTO Function Functions V//40A/A/mA/10A Simply moving the test leads away from the mea- Description surement object holds the measured value. This function is useful when it is difficult to read the displayed value in the current location or both hands are being used to conduct the measure- ment.

  • Page 38: Hold Function

    3.2 HOLD Function 3.2 HOLD Function Functions V/Hz/ // /40A/A/mA/10A Description This function holds the currently measured value. Turn on the power while pressing H.AUTO/REL button, and hold H.AUTO/REL the button down until a beeping Measure sound is generated (toggle the function selector to the desired position).

  • Page 39: Overflow Warning Function

    3.3 Overflow Warning Function 3.3 Overflow Warning Function Functions V/40A/A/mA/10A When the measured value exceeds the maxi- Description mum indication (4200 counts), O.F is displayed and an intermittent sound is generated. When the measured value exceeds 1050 counts in the ranges specified below, O.F is displayed and an intermittent sound is generated.

  • Page 40: Relative Display Function

    3.4 Relative Display Function 3.4 Relative Display Function Functions V//40A/A/mA/10A Description Once an arbitrary value is specified as a refer- ence, the relative value against the reference is displayed. This function is useful to check any discrepancy from the reference. Checking any discrepancy from the reference (when 10 V is de- fined as the reference in the voltage measurement) Move the function selector...
  • Page 41 3.4 Relative Display Function Application: Using the Relative Display function for the purpose of zero adjustment in the measurement of low resistances Move the function selector Short-circuit the test leads  to the position and con- nect the test leads to the equipment.

  • Page 42: Auto Power Save Function

    3.5 Auto Power Save Function 3.5 Auto Power Save Function Functions All functions Approximately 10 minutes after completing final Description operation, the measurement product automati- cally enters Power Save mode. When the mea- surement product is turned on, it automatically enters Auto Power Save mode ("APS"...

  • Page 43: Dynamic Recording Function

    3.6 Dynamic Recording Function 3.6 Dynamic Recording Function Functions V//40A/A/mA/10A This function allows the maximum (MAX), mini- Description mum (MIN), average (AVG), and currently mea- sured values to be displayed selectively. It is useful for measuring any discrepancy over an extended period.

  • Page 44: Memory Function

    3.7 Memory Function 3.7 Memory Function Saving data to memory Functions V//40A/A/mA/10A Description This function memorizes the measured value held using the Hold Auto or Hold function. Hold the measured value using the Hold Auto or Hold function. Press the REC•MEMO button in hold mode.
  • Page 45 3.7 Memory Function Calling data from memory Call data from memory as specified below. Turn on the power while RANGE pressing the RANGE button. Move the function selector to position ( hold the but- ton down until a beeping sound is generated).
  • Page 46 3.7 Memory Function...

  • Page 47: Chapter 4 Specifications

    4.1 General Specifications Chapter 4 Specifications 4.1 General Specifications Measurement Dual integration Method AC Measurement True RMS measurement System Function DC voltage ( V), AC voltage(  Resistance ( ), DC current ( AC current ( A), Continuity check ( Diode check ( ), Frequency (Hz), Duty factor (...
  • Page 48 4.1 General Specifications V. terminal (V, Hz, , continuity, diode) Input Terminals A.mA/ A/ COM terminals Equipped with terminal shutter to prevent improper operation. Function Selector Rotary selector Range Switching Auto/Manual Range Sampling Rate 2.5 S/s (except Frequency), 5 S/s (Fre- quency), 25 S/s (Update of bar graph) Power Supply Two manganese (R03) batteries or...
  • Page 49 4.1 General Specifications Maximum Rated 20 mVA (supply voltage 3.0 V) Power 0.1 mVA (Auto Power Saving, supply volt- age 3.0 V) Operating Environ- Indoors, Pollution Degree 2, altitude up to ment 2000 m (6562-ft.) Operating Temper- 0 to 50°C (32 to 122°F), at 80%RH or less ature &...

  • Page 50: Accuracy

    4.2 Accuracy 4.2 Accuracy Accuracy guarantee for 23±5°C(73±9°F), 80%RH or less temperature and hu- midity Guaranteed accuracy 1 year period Regulated power sup- 3.4 V or lower (until the mark ply range lights up) (rdg.: displayed value, dgt.: resolution) Voltage Measurement Range Accuracy Input Impedance...
  • Page 51 4.2 Accuracy (C) Total error (A+B): 1.5 V Based on the total error (C), the margin of error for the measured value of 100.0 V is 98.5 V to 101.5 V. (rdg.: displayed value, dgt.: resolution) Frequency Measurement Range Accuracy Input level (Range) [Hz] ±(rdg.)±(dgt.)
  • Page 52 4.2 Accuracy (rdg.: displayed value, dgt.: resolution) Current Measurement Range Accuracy Input Impedance ±(rdg.)±(dgt.) (Shunt resistance) 42.00 ±1.5%±4 10k Approx. 420.0 ±1.5%±4 100 Approx. 4200 ±1.5%±4 100 Approx. 42.00m ±1.5%±4 1 Approx. 420.0m ±1.5%±4 1 Approx. 10.00*2 ±1.5%±4 0.01 Approx. 42.00...

  • Page 53: L9207-10 Test Lead Specifications

    4.3 L9207-10 TEST LEAD Specifications 4.3 L9207-10 TEST LEAD Specifications Operating environment Indoors, Pollution degree 2, altitude up to 2000 m (6562-ft.) Operating temperature -15°C to 55°C (5°F to 131°F), 90%RH or and humidity less (no condensation) Storage temperature -30°C to 60°C (-22°F to 140°F), 90%RH and humidity or less (no condensation) Maximum rated...

  • Page 54: Chapter 5 Maintenace And Service

    5.1 Replacing the Batteries and Fuses Maintenace and Chapter 5 Service 5.1 Replacing the Batteries and Fuses • To avoid electric shock when replacing the batteries and fuses, first disconnect the test leads from the object to be mea- sured. •...
  • Page 55 10 kA (Littelfuse, Inc.) *Cooper Industries Inc., Bussmann Division, Different fuses are mounted to the A, mA and A terminals. When replacing a fuse, make sure you are accessing the correct terminal. To purchase, please contact your distributor or nearest Hioki sales office.

  • Page 56: Cleaning

    • If the product seems to be malfunctioning, con- firm that the batteries are not discharged, and that the test leads and fuse are not open cir- cuited before contacting your dealer or Hioki rep- resentative. • To avoid corrosion from battery leakage, remove the batteries from the product if it is to be stored for a long time.

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