ENGLISH
User manual
Copyright HT ITALIA 2012 Release EN 1.01 - 06/02/2012
HT309
TABLE OF CONTENTS:
1. PRECAUTIONS AND SAFETY MEASURES .................................................................. 2
1.1. Preliminary instructions ......................................................................................... 2
1.2. During use ............................................................................................................. 2
1.3. After use ................................................................................................................ 2
2. GENERAL DESCRIPTION .............................................................................................. 3
3. PREPARATION FOR USE .............................................................................................. 3
3.1. Initial checks .......................................................................................................... 3
3.2. Instrument power supply ....................................................................................... 3
3.3. Calibration ............................................................................................................. 3
3.4. Storage .................................................................................................................. 3
4. OPERATING INSTRUCTIONS ........................................................................................ 4
4.1. Instrument description ........................................................................................... 4
4.2. Description of function keys ................................................................................... 5
4.2.1. HOLD/L.S. (Light Source) key ....................................................................................... 5
4.2.2. LX/FC/CD key ............................................................................................................... 5
4.2.3. MEM/READ key ............................................................................................................ 6
4.2.4. Deleting the internal memory ........................................................................................ 6
4.2.5. MAX/MIN/AVG functions ............................................................................................... 6
4.2.6. Disabling the Auto Power OFF function ........................................................................ 6
4.2.7. ZERO key ...................................................................................................................... 6
4.3. Measuring operations ............................................................................................ 7
4.3.1. Illuminance measurement ............................................................................................. 7
4.3.2. Luminous intensity measurement .................................................................................. 7
5. MAINTENANCE .............................................................................................................. 8
5.1. Battery replacement .............................................................................................. 8
5.2. Cleaning the instrument ......................................................................................... 8
5.3. End of life .............................................................................................................. 8
6. TECHNICAL SPECIFICATIONS ..................................................................................... 9
6.1. Technical characteristics ....................................................................................... 9
6.1.1. Spectrum response ....................................................................................................... 9
6.1.2. Sensor ........................................................................................................................... 9
6.1.3. General characteristics ................................................................................................ 10
6.2. Environment ........................................................................................................ 10
6.2.1. Environmental conditions for use ................................................................................ 10
6.3. Accessories ......................................................................................................... 10
6.3.1. Accessories provided .................................................................................................. 10
7. SERVICE ....................................................................................................................... 11
7.1. Warranty conditions ............................................................................................. 11
7.2. Service ................................................................................................................ 11
8. APPENDIX A: RECOMMENDED ILLUMINANCE LEVELS ........................................... 12
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HT309
1. PRECAUTIONS AND SAFETY MEASURES
The instrument has been designed in compliance with the safety directives relevant to electronic measuring instruments. In order to prevent damaging the instrument, please carefully follow the procedures described in this manual and read all notes preceded by
the symbol with the utmost attention. Before and after carrying out the measurements, carefully observe the following instructions:
• Do not carry out any measurements in case gas, explosive materials or flammables are present, or in dusty environments
• Do not carry out any measurement in humid environments
• Do not carry out any measurement in case you find anomalies such as deformation,
breaks, substance leaks, absence of display on the screen, etc.
• Do not touch the photodiode sensor while carrying out measurements, in order to prevent any damage to the instrument caused by static electricity or contamination
The following symbol is used in this manual:
Caution: observe the instructions given in this manual. Improper use could damage the instrument and/or its components.
1.1. PRELIMINARY INSTRUCTIONS
• In order to prevent incorrect reading, replace the battery when the symbol “ ” appears on the display when switching on the instrument.
1.2. DURING USE
Please carefully read the following recommendations and instructions.
CAUTION
Failure to comply with the Caution notes and/or Instructions may damage the instrument and/or its components or be a source of danger for the operator.
• While measuring, if the value or the sign of the quantity being measured remain unchanged, check if the HOLD function is enabled.
1.3. AFTER USE
• When measurement is complete, switch off the instrument.
• If the instrument is not to be used for a long time, remove the battery.
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HT309
2. GENERAL DESCRIPTION
The instrument HT309 is a precision digital luxmeter, mainly used for measuring illuminance of both white light sources and LED sources of various colours, expressed in Lux (Lx) or Foot-candles (Fc). The instrument complies with CIE (International Commission on Illumination) standards on spectrum response and corrects according to the cosine of the angle of incidence of light. The silicon photodiode sensor guarantees measurement stability.
The instrument has the following functions:
• Illuminance measurement up to 400kLux / 40kFc
• Luminous intensity measurement (expressed in Candles)
• Selection of the measuring unit: Lx/Fc/CD
• Light source: white light source and LED sources in their visible spectrum
• High-precision and rapid measurements
• Data HOLD function
• MAX/MIN/AVG functions
• Zeroing of the displayed value
• Setting of correction factors of spectrum response
• Internal memory for saving measurement results
• Auto Power OFF
• Autorange
3. PREPARATION FOR USE
3.1. INITIAL CHECKS
Before shipping, the instrument has been checked from an electric as well as mechanical point of view. All possible precautions have been taken so that the instrument is delivered undamaged.
However, we recommend generally checking the instrument in order to detect possible damage suffered during transport. In case anomalies are found, immediately contact the forwarding agent.
We also recommend checking that the packaging contains all components indicated in §
6.3. In case of discrepancy, please contact the Dealer. In case the instrument should be returned, please follow the instructions given in § 7
3.2. INSTRUMENT POWER SUPPLY
The instrument is powered by a single 9V alkaline battery type NEDA1604, JIS006P, IEC6F22 included in the package. In order to prevent battery discharge, it has not been inserted in the instrument. For battery installation, follow the instructions given in § 5.1. The “ ” symbol appears when the battery is flat. Replace the battery by following the instructions given in § 5.1.
3.3. CALIBRATION
The instrument has the technical specifications described in this manual. The instrument’s performance is guaranteed for 12 months.
3.4. STORAGE
In order to guarantee precise measurement, after a long storage time under extreme environmental conditions, wait for the instrument to come back to normal condition (see the environmental specifications contained in § 6.2.1 before use).
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