ENGLISH User’s manual © Copyright HT ITALIA 2011 Release EN 1.
HT-14N CONTENTS: 1. Safety precautions and procedures .............................................................................. 2 1.1. Preliminary ............................................................................................................ 2 1.2. During Use ............................................................................................................ 3 1.3. After Use .........................................................................................................
HT-14N 1. SAFETY PRECAUTIONS AND PROCEDURES This apparatus conforms to safety standard EN 61010-1, relating to electronic measuring instruments. For your own safety and that of the apparatus, you must follow the procedures described in this instruction manual and especially read all the notes preceded by the symbol carefully. Take extreme care for the following conditions when measuring: • Do not measure voltage, current under humid or wet environment.
HT-14N • • • Check if the battery is installed correctly. Prior to connecting the test probes to the installation, check that the function selector is positioned on the required measurement. Check if the analog display and the range indicator show the same as the function desired. 1.2.
HT-14N 2. GENERAL DESCRIPTION Dear customer, we thank you for your patronage. The multimeter you have just purchased will grant you accurate and reliable measurements provided that it is used according to the present manual’s instructions. The apparatus can perform the following measurement: • DC values of the voltage (VDC). • AC values of the voltage (VAC) without DC components. • DC values of the voltage (VDC) without AC components. • DC values of the current (IDC) without AC components.
HT-14N 4. OPERATING INSTRUCTIONS 4.1. INSTRUMENT DESCRIPTION LEGEND: 1. Case with protective holster. 2. Analog display. 3. Resistance zero adjustment knob. 4. Resistance range. 5. AC voltage range. 6. DC Current range. 7. Pin cover. 8. Attachable test leads with probes. 9. DC voltage range. 10. Rotary switch. 11. Battery test. Fig. 1: Instrument description. 4.2. MEASUREMENT DESCRIPTION 4.2.1. DC Voltage measurement WARNING Maximum input for DC voltage is 500V .
HT-14N 4.2.2. AC Voltage measurement WARNING Maximum input for AC voltage is 500V . Do not attempt to take any voltage measurement that exceeds the limits. Exceeding the limits could cause electrical shock and damage the multimeter. 1. Select a proper range for AC voltage (25, 250 or 500 DC V). 2. If the voltage range is not known beforehand, set the range switch to the highest range and work down. 3.
HT-14N 4.2.5. Decibel measurement WARNING Maximum input for AC/DC voltage is 500V. Do not attempt to take any voltage measurement that exceeds the limits. Exceeding the limits could cause electrical shock and damage the multimeter. Disconnect test leads from the circuit under test prior to select a different range. 1.
HT-14N 4.3. PREVENTIVE MAINTENANCE 4.3.1. General information 1. This multimeter is a precision instrument. Whether in use or in storage, please do not exceed the specification requirements to avoid any possible damage or danger during use. 2. Do not place this meter in high temperature or humidity or expose to direct sunlight. 3. Be sure to turn the meter off after use. For long time storage, remove the battery to avoid leakage of battery liquid that would damage the interior parts. 4.
HT-14N 5. TECHNICAL SPECIFICATIONS 5.1. CHARACTERISTICS Accuracy is indicated as ± [% of reading]. It is referred to the following reference conditions: 23°C ± 5°C with RH <75%. 5.1.1. DC Voltage Range 2.5V 25V 250V 500V Meter resistance: 2kΩ/V Sensitivity 2kΩ/V 2kΩ/V 2kΩ/V 2kΩ/V Accuracy ± (5% of full scale) ± (5% of full scale) ± (5% of full scale) ± (5% of full scale) Sensitivity 2kΩ/V 2kΩ/V 2kΩ/V Accuracy ± (5% of full scale) ± (5% of full scale) ± (5% of full scale) 5.1.2.
HT-14N 5.1.6. Safety Comply with: Insulation: Pollution: For inside use, max height: Over voltage: EN 61010-1. Class 2, double reinforced insulation. Level 2. 2000m. CAT II 300V. 5.1.7. General data Mechanical characteristics Size: 80 (W) x 145(H) x 45(D)mm. Weight (including battery, holster and test leads): about 250g. Supply Battery type: Battery life (only for Ω measurement): Fuse: UM3 single 1.5Volt AA size battery, IEC LR6. About 10 hours of continuos work. 5 x 20mm 500mA/250V Fast Acting.
HT-14N 6. SERVICE 6.1. WARRANTY CONDITIONS This equipment is guaranteed against any material fault or manufacturer’s defect, in accordance with the general conditions of sale. During the warranty period (one year), faulty parts may be replaced, with the manufacturer reserving the right to decide either to repair or replace the product. In the event of returning the equipment to the after-sales service or to a regional branch, the outward transport is payable by the customer.
