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Summary of Contents for Itm HT9021
- Page 1 ENGLISH User manual 1.800.561.8187 information@itm.com www. .com © Copyright HT ITALIA 2012 Release EN 1.04 - 19/04/2012...
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Page 2: Table Of Contents
HT9021 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 2.1. TRMS and Mean value measuring instruments ..............4 2.2. -
Page 3: Safety Precautions And Procedures
HT9021 1. SAFETY PRECAUTIONS AND PROCEDURES This clamp complies with IEC/EN61010-1. For your own safety and in order to avoid damaging the instrument, you’re recommended to keep to the instructions contained in this manual and read carefully all the notes preceded by the symbol Take extreme care for the following conditions while measuring: •... -
Page 4: During Use
HT9021 1.2. DURING USE Always keep to the instructions contained in this manual. CAUTION Non compliance with the CAUTIONs and/or the instructions may damage the tester and/or its components or injure the operator. • Before changing the switch position, take off the clamp jaw from the tested conductor or the electrical circuit in order to avoid any accident •... -
Page 5: General Description
HT9021 2. GENERAL DESCRIPTION HT9021 meter can perform the herewith measurements: • DC and AC TRMS Voltage up to 1000V • DC and AC TRMS Current up to 1000A • Resistance and continuity test with buzzer • Capacitance • Frequency with test lead and jaws •... -
Page 6: Preparation For Use
HT9021 3. PREPARATION FOR USE 3.1. INITIAL The tester has been checked from a mechanical and electrical point of view before shipment. Every care has been taken to make sure that the instrument reaches you in perfect conditions. However, it’s advisable to make a rapid check in order to detect any damage which may have occurred in transit. -
Page 7: Operating Instructions
HT9021 4. OPERATING INSTRUCTIONS 4.1. INSTRUMENT DESCRIPTION 4.1.1. Command description LEGEND: 1. Inductive clamp jaw 2. LED voltage detection 3. Jaw trigger 4. Function selector 5. HOLD / 6. MODE, MAX/MIN, Hz%, PEAK/REL function keys 7. LCD display 8. VΩ... -
Page 8: Function Key Description
HT9021 4.2. FUNCTION KEY DESCRIPTION 4.2.1. H key By pushing “H” key the parameter measured value is frozen on the display and the symbol ”HOLD” appears on it. This mode is disabled by pushing “H” key or moving the rotary switch. -
Page 9: Functions Of Rotary Switch Description
HT9021 4.3. FUNCTIONS OF ROTARY SWITCH DESCRIPTION 4.3.1. AC Voltage measurement CAUTION Maximum input for AC Voltage measurements is 1000Vrms. Do not take any voltage measurement exceeding this limit in order not to risk electrical shock or damaging the tester Fig. -
Page 10: Dc Voltage Measurement
HT9021 4.3.2. DC Voltage measurement CAUTION Maximum input for DC Voltage measurements is 1000V. Do not take any voltage measurement exceeding this limit in order not to risk electrical shock or damaging the tester. Fig. 4: Taking DC voltage measurements 1. -
Page 11: Resistance Measurement
HT9021 4.3.3. Resistance measurement CAUTION Before taking any in circuit resistance measurement, remove power from the circuit to be tested and discharge all the capacitors. Fig. 5: Taking Resistance measurement 1. Rotate the switch on Ω CAP position 2. Insert the red test lead plug into VΩ... - Page 12 HT9021 CAUTION Before taking any in circuit resistance measurement, remove power from the circuit to be tested and discharge all the capacitors. Fig. 6: Taking Continuity test and Diode test 1. Rotate the switch on Ω CAP position 2. Pushing MODE key and select continuity test. The symbol is shown at display 3.
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Page 13: Capacitance Measurement
HT9021 4.3.5. Capacitance measurement CAUTION When testing in-circuit capacitors, turn off the power of the circuit to be tested and discharge all the capacitors Fig. 7: Taking Capacitance measurement 1. Rotate the switch on Ω CAP position 2. Pushing MODE key and select capacitance test. The “nF” symbol is shown at display 3. -
Page 14: Temperature Measurement
HT9021 4.3.6. Temperature measurement CAUTION Do not allow the temperature sensor to contact a surface that is energized above 30 V RMS or 60 V DC, such voltages pose a shock hazard Fig. 8: Taking Temperature measurement 1. Rotate the switch on Temp position 2. -
Page 15: Ac And Dc Current Measurement
HT9021 4.3.7. AC and DC Current measurement CAUTION Make sure that all the test leads are disconnected from the meter terminals for current measurement. Fig. 9: Taking AC and DC current measurements 1. Rotate the switch on 60A , 600A... -
Page 16: Frequency And Duty Cycle Measurement
HT9021 4.3.8. Frequency and Duty cycle measurement CAUTION • On frequency test with test leads the maximum input for AC Voltage measurements is 1000Vrms. Do not take any voltage measurement exceeding this limit in order not to risk electrical shock or damage the tester •... -
Page 17: Maintenance
HT9021 5. MAINTENANCE 5.1. GENERAL INFORMATIONS 1. This digital clamp meter is a precision instrument. Whether in use or in storage, please do not exceed the specification requirements to avoid possible damages or dangers. 2. Do not place this meter at high temperatures or humidity or expose it to direct sunlight. -
Page 18: Technical Specifications
HT9021 6. TECHNICAL SPECIFICATIONS 6.1. CHARACTERISTICS Accuracy is calculated as [% rdg + (number of dgt) x resolution]. It is referred to the following reference conditions: 18°C ÷ 28°C (65°F ÷ 83°F), < 75%RH DC Voltage (Autorange) Overload Range Resolution... -
Page 19: Safety
HT9021 Capacitance (Autorange) Range Resolution Accuracy Overload protection ±(3.5%rdg+40dgt) 40.00nF 0.01nF 400.0nF 0.1nF 4.000µF 0.001µF ±(2.5%rdg+5dgt) 600VDC/ACrms 40.00µF 0.01µF 400.0µF 0.1µF ±(5.0%rdg+5dgt) 4000µF 1µF Diode test Range Test current Open voltage 0.9mA typical 2.8VDC Frequency with test leads (Autorange) Range... -
Page 20: Environmental Conditions
HT9021 Supply Battery type: 1 battery 9V NEDA 1604 IEC 6F22 JIS 006P. Low battery indication: “ ” is displayed when the battery level is low Battery life: about 200 hours AutoPowerOff: after 15 minutes of idleness Display Characteristics: 4 LCD (max 6000 counts), decimal point, unit symbol... -
Page 21: Service
HT9021 7. SERVICE 7.1. WARRANTY CONDITIONS This equipment is guaranteed against material faults or production defects, in accordance with the general sales conditions. During the warranty period (one year), faulty parts may be replaced. The manufacturer reserves the right to decide either to repair or replace the product.
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