HT Italia HT8100 User Manual
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HT Italia HT8100 User Manual

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ENGLISH
User Manual
 Copyright HT ITALIA 2013
Release EN 1.05 - 08/07/2013

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Summary of Contents for HT Italia HT8100

  • Page 1 ENGLISH User Manual  Copyright HT ITALIA 2013 Release EN 1.05 - 08/07/2013...

  • Page 2: Table Of Contents

    HT8100 Table of contents: PRECAUTIONS AND SAFETY MEASURES ............... 2     1.1.  Preliminary instructions ..................... 2  1.2.  During use ......................... 3  1.3.  After use ..........................3  1.4.  Definition of measurement (overvoltage) category ............3  GENERAL DESCRIPTION ................... 4  ...

  • Page 3: Precautions And Safety Measures

    HT8100 1. PRECAUTIONS AND SAFETY MEASURES The instrument has been designed in compliance with directive IEC/EN61010-1 relevant to electronic measuring instruments. For your safety and in order to prevent damaging the instrument, please carefully follow the procedures described in this manual and read all notes preceded by the symbol with the utmost attention.

  • Page 4: During Use

    HT8100 1.2. DURING USE Please carefully read the following recommendations and instructions: CAUTION Failure to comply with the Caution notes and/or Instructions may damage the instrument and/or its components or be a source of danger for the operator.  Before activating the rotary switch, disconnect the test leads from the circuit under test.

  • Page 5: General Description

    HT8100 2. GENERAL DESCRIPTION HT8100 carries out the following measurements:  DC and AC+DC TRMS voltage  DC and AC+DC TRMS current  Resistance and Continuity test  AC voltage and current frequency  Diode test  Current generation with amplitude up to 24mA DC with display in mA and % ...

  • Page 6: Preparation For Use

    HT8100 3. PREPARATION FOR USE 3.1. INITIAL CHECKS Before shipping, the instrument has been checked from an electric as well as mechanical point of view. All possible precautions have been taken so that the instrument is delivered undamaged. However, we recommend generally checking the instrument in order to detect possible damage suffered during transport.

  • Page 7: Operating Instructions

    HT8100 4. OPERATING INSTRUCTIONS 4.1. INSTRUMENT DESCRIPTION CAPTION: 1. Auto Backlight 2. LCD display 3. Function keys 4. MODE key 5. Rotary selector switch 6. Input terminal COM 7. Input terminal mA 8. Input terminal HzV 9. Input terminal A Fig.

  • Page 8: Description Of Function Keys

    HT8100 4.2. DESCRIPTION OF FUNCTION KEYS The following § describes the functions of the different keys. When pressing a key, the display shows the symbol of the activated function and the buzzer sounds. 4.2.1. A-HOLD and REL keys  Pressing the A-HOLD key in any function, except for the current generation function and diode test function, keeps the value of the measured quantity shown on the display.

  • Page 9: Internal Modes Of The Instrument

    HT8100 4.3. INTERNAL MODES OF THE INSTRUMENT 4.3.1. MIN/MAX/AVG measurement In any function, except for the current generation function, it is possible to activate the detection of the Maximum, Minimum and Average (AVG) values of the quantity being tested as follows: 1.

  • Page 10: Store And Recall Modes

    HT8100 4.3.5. STORE and RECALL modes For each measuring function, except for the current generation function, it is possible to save the displayed value in the instrument’s memory and to recall the data saved on the display at any time. The instrument allows saving max. 100 pieces of data in the memory.

  • Page 11: Output Dc Current Generation

    HT8100 4.3.7. Output DC current generation The “OUTPUT” section of the function selector switch defines the possibility of generating an output DC current with the instrument, considering the selectable measuring ranges 0- 20mA or 4-20mA. The instrument may operate in the following modes: DC current source ...

  • Page 12: Measuring Operations

    HT8100 4.4. MEASURING OPERATIONS 4.4.1. DC Voltage measurement CAUTION The maximum input DC voltage is 1000 V. Do not measure voltages exceeding the limits given in this manual. Exceeding voltage limits could result in electrical shocks to the user and damage to the instrument.

  • Page 13: Ac Voltage And Frequency Measurement

    HT8100 4.4.2. AC Voltage and Frequency measurement CAUTION The maximum input AC voltage is 1000Vrms. Do not measure voltages exceeding the limits given in this manual. Exceeding voltage limits could result in electrical shocks to the user and damage to the instrument.

  • Page 14: Dc Current Measurement

    HT8100 4.4.3. DC Current measurement CAUTION The maximum input DC current is 1A. Do not measure currents exceeding the limits given in this manual. Exceeding current limits could result in electrical shocks to the user and damage to the instrument.

  • Page 15: Ac Current And Frequency Measurement

    HT8100 4.4.4. AC Current and Frequency measurement CAUTION The maximum input AC current is 1A. Do not measure currents exceeding the limits given in this manual. Exceeding current limits could result in electrical shocks to the user and damage to the instrument.

  • Page 16: Resistance Measurement And Continuity Test

    HT8100 4.4.5. Resistance measurement and Continuity test CAUTION Before attempting any resistance measurement, cut off power supply from the circuit to be measured and make sure that all capacitors are discharged, if present. Fig. 6: Use of the instrument for resistance measurement and continuity test 1.

  • Page 17: Diode Test

    HT8100 4.4.6. Diode test CAUTION Before attempting any diode test, cut off power supply from the circuit to be measured and make sure that all capacitors are discharged, if present. Fig. 7: Use of the instrument for diode test 1. Select the ...

  • Page 18: Dc Current Generation

    HT8100 4.4.7. DC current generation CAUTION The maximum output DC current generated by the instrument is 24mA with internal battery voltage > 4.5VDC. Fig. 8: Use of the instrument for DC current generation 1. Switch on the instrument by pressing and holding the RANGE key to select the measuring range 0-20mA or 4-20mA.

  • Page 19: Simulation Of A Transducer

    HT8100 4.4.8. Simulation of a transducer CAUTION In this mode, the instrument provides an adjustable output current up to 24mADC. It is necessary to provide an external power supply with voltage between 6V and 48VDC in order to adjust current.

  • Page 20: Measuring Output Dc Current From External Transducers (Loop)

    HT8100 4.4.9. Measuring output DC current from external transducers (Loop) CAUTION In this mode, the instrument provides an output voltage > 24VDC / 20mA, capable of supplying an external transducer and allowing measuring loop current at the same time. Fig. 10: Use of the instrument for measuring output DC current from external transducers 1.

  • Page 21: Maintenance

    HT8100 5. MAINTENANCE CAUTION  Only expert and trained technicians should perform maintenance operations. Before carrying out maintenance operations, disconnect all cables from the input terminals.  Do not use the instrument in environments with high humidity levels or high temperatures. Do not expose to direct sunlight.

  • Page 22: Technical Specifications

    HT8100 6. TECHNICAL SPECIFICATIONS 6.1. TECHNICAL CHARACTERISTICS Accuracy indicated as [% reading + (number of dgt * resolution)] at 23°C±5°C, <80%RH DC Voltage Protection against Accuracy Input impedance Range Resolution overcharge (0.05%rdg+30dgt) 50.000mV 0.001mV 500.00mV 0.01mV 5.0000V 0.0001V 10M // <100pF 1000VDC/ACrms (0.05%rdg+5dgt)
  • Page 23 HT8100 Resistance Protection against Range Resolution Accuracy Output current overcharge (0.2%rdg+30dgt) 500.00 0.01 100µA 5.0000k 0.0001k (0.2%rdg+10dgt) 10µA 50.000k 0.001k 1000VDC/ACrms (0.5%rdg+10dgt) 1µA 500.00k 0.01k (1.0%rdg+10dgt) 100nA 5.0000M 0.0001M (2.0%rdg+10dgt) 10nA 50.00M (*) 0.01M (*) Slight instability < 20 dgt Maximum open-circuit voltage: approx 3.5V...

  • Page 24: Electrical Characteristics

    HT8100 Generated DC current – Output ramp Ramp type Description Action Passage from 0% 100% 0% in 40s Slow linear ramp Passage from 0% 100% 0% in 20s Quick linear ramp 0% 100% 0% with ramps of 15s Slow step ramp 0% 100% 0% with ramps of 5s...

  • Page 25: Environment

    HT8100 6.2. ENVIRONMENT 6.2.1. Environmental conditions for use Reference temperature: 23° ± 5°C (73 ± 41°F) Operating temperature/humidity: -10°C ÷ 30°C (14°F ÷ 86°F), <85%RH 30°C ÷ 40°C (86°F ÷ 104°F), <75%RH 40°C ÷ 50°C (104°F ÷ 122°F), <45%RH Storage temperature: -20°...

  • Page 26: Service

    HT8100 7. SERVICE 7.1. WARRANTY CONDITIONS This instrument is warranted against any material or manufacturing defect, in compliance with the general sales conditions. During the warranty period, defective parts may be replaced. However, the manufacturer reserves the right to repair or replace the product.

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