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Summary of Contents for HT HT321
- Page 1 ENGLISH User manual Copyright HT ITALIA 2012 Release EN 2.00 - 19/04/2012...
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Page 2: Table Of Contents
HT321 - HT322 Table of contents: SAFETY PRECAUTIONS AND PROCEDURES ............2 1.1. Preliminary ........................2 1.2. During use ......................... 3 1.3. After use ..........................3 1.4. Measuring (overvoltage) categories definitions ..............3 GENERAL DESCRIPTION ................... 4 ... -
Page 3: Safety Precautions And Procedures
HT321 - HT322 1. SAFETY PRECAUTIONS AND PROCEDURES This meter is compliance with safety Standard IEC/EN61010-1 related to electronic measuring instruments. For your own safety and to avoid damaging the instrument follow the procedures described in this instruction manual and read carefully all notes preceded... -
Page 4: During Use
HT321 - HT322 1.2. DURING USE Read the recommendations which follow and the instructions in this manual: CAUTION An improper use may damage the instrument and/or its components or injure the operator. When changing the range, first disconnect the test leads from the circuit under test in order to avoid any accident ... -
Page 5: General Description
HT321 - HT322 2. GENERAL DESCRIPTION This meter performs the herewith measurements: DC Voltage AC sine voltage Resistance Continuity test Diode test Temperature with type K probe (only HT322) All selectable by means of a 6-position rotary selector (including OFF position). Also are... -
Page 6: Operating Instructions
HT321 - HT322 4. OPERATING INSTRUCTIONS 4.1. INSTRUMENT DESCRIPTION 4.1.1. Front panel description CAPTION: 1. LCD 2. HOLD Key 3. R Key 4. MAX Key 5. SEL Key 6. Backlight Key(For HT322) 7. Function selector 8. COM input terminal 9. V... -
Page 7: Description Of Function Keys
HT321 - HT322 4.2. DESCRIPTION OF FUNCTION KEYS 4.2.1. HOLD Key By pressing HOLD key the measured value is frozen on the display where the symbol "HOLD" appears. Pressing again HOLD to disable this function and resume normal operation. 4.2.2. R (RANGE) Key By pressing R key, the manual mode is activated and the “AUTO”... -
Page 8: Measurements
HT321 - HT322 4.3. MEASUREMENTS 4.3.1. DC Voltage measurement CAUTION The maximum input for DC voltage is 600V. Do not attempt to measure higher voltages to avoid electrical shocks or damages to the instrument. Fig. 2: Using the meter for DC Voltage measurement 1. -
Page 9: Ac Voltage Measurement
HT321 - HT322 4.3.2. AC Voltage measurement CAUTION The maximum input for AC voltage is 600V. Do not attempt to measure higher voltages to avoid electrical shocks or damages to the instrument. Fig. 3: Using the instrument for AC Voltage measurement 1. -
Page 10: Resistance Measurement
4.2.2). If the resistance value under test is unknown, select the highest range. 3. Insert the test leads into the jack, the red plug into V (For HT321) / V °C°F (For HT322) jack and black plug into COM jack. -
Page 11: Diode Test And Continuity Test
Fig. 5: Using the instrument for Diode test 1. Switch on 2. Insert the test leads into the jack, the red plug into V (for HT321) / V °C°F (for HT322) jack, and black plug into COM jack (see Fig. 5) 3. -
Page 12: Temperature Measurement (Only Ht322)
HT321 - HT322 4.3.5. Temperature measurement (only HT322) Fig. 6: Using the instrument for Temperature measurement 1. Switch on °C°F. 2. Pressing SEL key to select °C or °F measurements 3. Insert the T10 adapter optional accessory into V °C°F jack, and COM jack with respect of red and black colours (see Fig. -
Page 13: Maintenance
HT321 - HT322 5. MAINTENANCE 5.1. GENERAL INFORMATION This is a precision instrument. To guarantee its performances be sure to use it according to these instructions and keep it stored on suitable environmental conditions. Do not expose it to high temperatures or humidity or direct sunlight. Be sure to turn it off after use. If you expect not to use the instrument for a long period remove batteries to avoid leakages of battery liquid which could damage the its inner components. -
Page 14: Technical Specifications
HT321 - HT322 6. TECHNICAL SPECIFICATIONS 6.1. TECHNICAL FEATURES Accuracy is indicated as [%reading + (number of digits*resolution)] at 23°C±5°C,<75%HR DC Voltage Range Resolution Accuracy Input Impedance Overload protection 200mV 0.1mV 0.001V (0.8%rdg +1dgt) 0.01V 10M 600VDC/ACrms 200V 0.1V (1.0%rdg +2dgt) -
Page 15: Safety
HT321 - HT322 6.1.1. Safety The instrument complies with: IE/EN61010-1 Insulation: double insulation Pollution degree: Overvoltage category: CAT III 1000V, CAT IV 600V Max height of use: 2000m (6561ft) 6.1.2. General data Mechanical characteristics Dimensions (L x W x H): 163 x 88 x 48mm (6.4 x 3.5 x 1.9in) -
Page 16: Service
HT321 - HT322 7. SERVICE 7.1. WARRANTY CONDITIONS This instrument is guaranteed against material or production defects, in accordance with our general sales conditions. During the warranty period the manufacturer reserves the right to decide either to repair or replace the product.
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