ENGLISH User’s manual © Copyright HT ITALIA 2012 Release EN 1.
HT204 Table of contents: 1. SAFETY PRECAUTIONS AND PROCEDURES ............................................................. 2 1.1. Preliminary ............................................................................................................ 2 1.2. During use ............................................................................................................. 2 1.3. After use ................................................................................................................
HT204 1. SAFETY PRECAUTIONS AND PROCEDURES This meter is in compliance with safety standard EN 61010-1 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 by this symbol .
HT204 2. GENERAL DESCRIPTION The digital solar power meter HT204 is used to measure the sunlight. Possible applications are the evaluation of the solar power in industrial installations (photovoltaic plants) or its danger level for people’s skin. The sunlight is usually expressed in W/m2 or BTU/(ft2*h). 2.1.
HT204 2.3.3. W/B key key the manual selection of measuring unit is possible. The cyclically By pressing pressure of the key changes the measuring unit among W/m2 and BTU/(ft2*h). 2.3.4. D-H key By pressing key the measured value is frozen on the display where the symbol "HOLD" appears. Press again D-H to disable this function and resume normal operation. 2.3.5.
HT204 4. OPERATING INSTRUCTIONS 4.1. MEASUREMENT DESCRIPTION 1. Press the power key to turn on the meter 2. Press the key to select W/m2 or BTU/(ft2*h) measurement 3. Remove the protection cap of the photo detector and expose it to the light source in horizontal position. Read the sunlight value on the LCD display 4. Wait for values to be stable on the display.
HT204 6. TECHNICAL SPECIFICATIONS 6.1. CHARACTERISTICS Accuracy is referred to the following reference conditions: 23 ± 5°C with RH < 70%. Uncertainty: Temperature added uncertainty: Resolution: Range: ± 10 W/m2 [ ± 3 BTU/(ft2*h) ] or ± 5%, whichever is greater ± 0.38 W/m2/°C [ ± 0.12 BTU/(ft2*h)/°C] from 25°C 1 W/m2 [ 1 BTU/(ft2*h) ] 1 ÷ 1999 W/m2 [ 1 ÷ 634 BTU/(ft2*h) ] 6.1.1.
HT204 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. 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.
