ENGLISH User manual © Copyright HT ITALIA 2012 Release EN 1.
HT3301-HT3310 Table of Contents: 1. SAFETY PRECAUTIONS AND PROCEDURES .......................................................... 2 1.1. Preliminary ...........................................................................................................................2 1.2. During use ............................................................................................................................3 1.3. After use ................................................................................
HT3301-HT3310 1. SAFETY PRECAUTIONS AND PROCEDURES This instrument complies with EMC standards related to electronic measuring equipment. For your own safety and to avoid damaging the instrument follow the procedures described in this instruction manual and read carefully all notes preceded by this symbol . The following symbol is used in this manual: CAUTION When this symbol is displayed, the meter is radiating the laser. Always prevent the laser from radiating to your eyes.
HT3301-HT3310 1.2. DURING USE Read carefully the following recommendations and instructions: CAUTION • • • • • • • • Be careful not activate the trigger if the symbol is displayed and the laser output is turned in your direction. A pressure on the trigger activates the laser. Always prevent the laser from radiating to your eyes. If the object under test has a smooth surface reflecting the laser, prevent the laser from radiating to our eyes.
HT3301-HT3310 3. PREPARATION TO USE 3.1. INITIAL CONTROL This instrument was checked both mechanically and electrically prior to shipment. Notwithstanding we suggest you to check it rapidly (eventual damages may have occurred during transport. Make sure that all standard accessories mentioned in paragraph 9.3 are included. Should you have to return back the instrument for any reason please follow the instructions mentioned in paragraph 10.1 3.2.
HT3301-HT3310 4. INSTRUMENT DESCRIPTION 4.1. FRONTAL PANEL LEGEND: 1. IR sensor 2. Laser pointer beam 3. LCD Display 4. down button 5. up button 6. mode button 7. laser/backlight button 8. Measurement Trigger 9. Handle Grip 10. Battery Cover 11. K Type inputs (only for HT3301) Fig. 1: Frontal panel description 4.2. DISPLAY LEGEND: 1. Data hold 2. Measuring indication 3. Emissivity symbol and value 4. °C/°F symbol 5. Auto obtain Emissivity (HT3301) 6. lock and laser” on” symbols 7.
HT3301-HT3310 4.4. DESCRIPTION OF FUNCTION KEYS LEGEND: 1. Up button 2. MODE button (for cycling through the mode loop) 3. Down button 4. Laser/Backlight on/off button (pull trigger and press button to activate laser/backlight) MODE Fig. 3: Description of function keys 4.4.1.
HT3301-HT3310 4.4.2. Switch °C / °F, LOCK ON/OFF and SET ALARM LEGEND: 1. C/F 2. LOCK ON/OFF 3. SET ALARM Fig. 4: Description of internal switch In order to access to the switches perform the herewith steps: 1. Open the battery cover and extract the internal battery 2. Select the temperature units (°C or °F) by using the °C/°F switch 3. Slide the middle switch LOCK to lock the instrument on for continuous measurement.
HT3301-HT3310 5. PARAMETERS SETTINGS 5.1. EMISSIVITY ADJUSTMENT 5.1.1. Definition Emissivity is a term used to describe the energy-emitting characteristics of materials. Most (90% of typical applications) organic materials and painted or oxidized surfaces have an emissivity of 0.95 (pre-set in the unit). Inaccurate readings will result from measuring shiny or polished metal surfaces. To compensate, cove the surface to be measured with masking tape or flat black paint.
HT3301-HT3310 Emissivity of common metal, refractory and buildings materials is shown in Table 2 Object Zinc (oxidized) Galvanized iron Tin-plated steel Gold (polished) Silver (polished) Chromium (polished) Steel (ground sheet) Steel plate (oxidized) Rough ingot iron Aluminium (oxidized) Aluminium oxide at 800°C Brass (roughened) Copper (polished) Molten copper Lead (oxidized at 25°C) Nickel (pure) Nick-Chrome (oxidized) Marble Alumina (fine grain) Silica (fine grain) Quartz (rough) Timber (various) Oil pai
HT3301-HT3310 6. OPERATING INSTRUCTIONS 6.1. TEMPERATURE MEASUREMENT 6.1.1. Infrared measurement mode 1. Select the desired additional parameter displayed according to paragraph 4.4.1 2. Hold the meter by its handle grip and point it toward the surface to be measured 3. Pull and hold the trigger to turn the meter on and begin testing. The display will light if the battery is good. Replace the battery if the display does not light.
HT3301-HT3310 6.1.2. Type K measurement mode (HT3301 only) 1. Pressing the MODE button, select the “TK” symbol according to paragraph 4.4.1 2. Disable laser beam using the Laser/Backlight key 3. Connect the K Type probe to the corresponding inputs respecting the polarity marked in the socket and in the plug. 4. Pull and hold the trigger to turn the meter on and begin testing. The display will light if the battery is good. Replace the battery if the display does not light.
HT3301-HT3310 8. MAINTENANCE 8.1. GENERAL 1. This meter is a precision instrument. Whether in use or in storage, please do not exceed the specifications to avoid any possible damage or danger during use 2. Do not keep this meter at high temperatures and/or humidity or expose to direct sunlight 3. Be sure to turn the meter off after use. For long term storage, remove the battery to avoid leakage of battery fluid that can damage the internal components 8.2.
HT3301-HT3310 9. TECHNICAL SPECIFICATIONS Accuracy is indicated as [% of reading + degree]. It is referred to the following reference conditions: 18 to 28 °C (64 to 82 °F), less than 80 % RH. INFRARED MEASUREMENT Function Resolution °C 0.1°C °F 0.1°F Spectral Response: Rapporto D/S: Emissivity: Sensor: Laser Diode: Range Accuracy Response time ±5.0°C -50°C ÷ –20°C ± ( 1.5%rdg + 2.0°C) -20°C ÷ 200°C ± ( 2.0%rdg + 2.0°C) 200°C ÷ 538°C 538°C ÷ 1000°C (HT3301) ± ( 3.5%rdg + 5.
HT3301-HT3310 9.2. ENVIRONMENTAL CONDITIONS 9.2.1. Climatic condition Operating temperature: Operating humidity: Storage temperature: Storage humidity: Operating max altitude: 0°C ÷ 50°C (32°F ÷122°F) 10 ÷ 80%RH –20°C ÷ 60°C (-4°F ÷ 140°F) < 70%RH 2000m (6.562 ft) 9.3. STANDARD ACCESSORIES The accessories contained inside the packaging are the followings: • Instrument • Battery • Type K bead probe (only for HT3301) • Carrying case • User manual 9.4.
HT3301-HT3310 10.SERVICE 10.1. 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. Should you need for any reason to return back the instrument for repair or replacement take prior agreements with the local distributor from whom you bought it.
