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Summary of Contents for HT HT701
- Page 1 ENGLISH User manual Copyright HT ITALIA 2012 Version EN 1.01 - 19/03/2012...
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Page 2: Table Of Contents
HT701 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
HT701 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
HT701 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
HT701 2. GENERAL DESCRIPTION Instrument HT701 carries out the following measurements: DC and AC TRMS voltage DC and AC TRMS current Resistance and Continuity test Insulation resistance with test voltage of 50, 100, 250, 500, 1000VDC ... -
Page 6: Preparation For Use
HT701 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
HT701 4. OPERATING INSTRUCTIONS 4.1. INSTRUMENT DESCRIPTION CAPTION: 1. Auto Backlight 2. LCD display 3. STORE/RECALL key 4. HOLD/LOCK key 5. RANGE key 6. Hz/0 key 7. MAX/MIN key 8. MODE key 9. TEST key 10. Rotary selector switch 11. Input terminal Hz°CV... -
Page 8: Description Of Function Keys
HT701 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. HOLD/LOCK key Pressing the HOLD/LOCK key: ... -
Page 9: Store/Recall Key
HT701 4.2.5. STORE/RECALL key The STORE/RECALL key carries out the following operations: Simply pressing the key allows saving the value on the display in the memory. The symbol “MEM” flashes for a second and the considered memory location is immediately indicated on the display. -
Page 10: Internal Modes Of The Instrument
HT701 4.3. INTERNAL MODES OF THE INSTRUMENT 4.3.1. Deactivation of the Autobacklight function The instrument has a display backlighting function (see Fig.1 – part 1) which activates automatically in conditions of poor visibility. The function deactivates automatically after a few seconds. To manually disable the function, proceed as follows: 1. -
Page 11: Measuring Operations
HT701 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 12: Ac Voltage And Frequency Measurement
HT701 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 13: Dc Current Measurement
HT701 4.4.3. DC Current measurement CAUTION The maximum input DC current is 400mA. 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 14: Ac Current And Frequency Measurement
HT701 4.4.4. AC current and frequency measurement CAUTION The maximum input AC current is 400mA. 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: Resistance Measurement And Continuity Test
HT701 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 16: Diode Test
HT701 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 17: Capacitance Measurement
HT701 4.4.7. Capacitance measurement CAUTION Before carrying out capacitance measurements on circuits or capacitors, cut off power supply from the circuit being tested and let all capacitance in it be discharged. Fig. 8: Use of the instrument for Capacitance measurement Select the position. -
Page 18: Temperature Measurement
HT701 4.4.8. Temperature measurement Fig. 9: Use of the instrument for Temperature measurement 1. Select the °C°F position. 2. Press the MODE key to select measurement in °C or °F. 3. Insert the provided adapter into the input terminals Hz°CV... -
Page 19: Insulation Resistance Measurement
HT701 4.4.9. Insulation resistance measurement CAUTION Check that no voltage is present at the ends of the circuit to be tested before carrying out an insulation measurement. During the whole test, make sure that the applied voltage cannot be accessed by third parties and adequately arrange the system by disconnecting everything that must not be included in the test. -
Page 20: Maintenance
HT701 5. MAINTENANCE CAUTION Only expert and trained technicians should perform maintenance operations. Before carrying out this operations, make sure you have disconnected all cables from the input terminals Do not use the instrument in environments with high humidity levels or high temperatures. -
Page 21: Technical Specifications
HT701 6. TECHNICAL SPECIFICATIONS 6.1. TECHNICAL CHARACTERISTICS Accuracy is indicated as [% rdg + (number of dgt * resolution)] at 23°C±5°C, <80%RH DC Voltage Range Resolution Accuracy Input impedance Overload protection (0.08%rdg+3dgt) 100.00mV 0.01mV 1000.0mV 0.1mV 10.000V 0.001V 10M // <100pF 1000VDC/ACrms (0.08%rdg+2dgt) - Page 22 HT701 Resistance Max voltage Range Resolution Accuracy Overload protection open circuit 1000.0 0.1 10.000k 0.001k 100.00k 0.01k (0.5%rdg+2dgt) Approx. 0.25V 1000VDC/ACrms 1000.0k 0.1k 10.000M 0.001M 40.00M 0.01M Continuity test Range Accuracy Buzzer Open circuit voltage Overload protection (0.5%rdg+2dgt) 1000VDC/ACrms Approx. 1.2V 400.0...
- Page 23 HT701 Temperature with K probe Range Resolution Accuracy Overload protection (1.0%rdg+2°C) -200.0°C ÷ 0.0°C 0.1°C (1.0%rdg+1°C) 0.0°C ÷ 1200.0°C 1000VDC/ACrms (1.0%rdg+36°F) -328.0°F ÷ 32.0°F 0.1°F (1.0%rdg+18°F) 32.0°F ÷ 2192.0°F Insulation resistance Test voltage Measuring range Accuracy Overload protection 2.000M 50V DC 20.00M...
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Page 24: Electrical Characteristics
HT701 6.1.1. Electrical characteristics Conversion: TRMS Sampling frequency: 3 times per second Temperature coefficient: 0.15x(accuracy) /°C, <18°C or >28°C NMRR Normal Mode Rejection Ratio: > 50dB for DC quantities and 50/60Hz CMRR Common Mode Rejection Ratio: >100dB from DC up to 60Hz (DCV) >... -
Page 25: Accessories
HT701 6.3. ACCESSORIES 6.3.1. Standard accessories Pair of test leads Pair of alligator clips Remote probe for insulation measurement K-type wire probe + adapter Belt with magnetic end for fastening to metal surfaces Protection holster ... -
Page 26: Service
HT701 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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