HT instruments HT309 User Manual
Page 2
HT309
EN - 1
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