HT instruments HT204 - Manual (Page 4)

HT204
EN - 3
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/m
2
or
BTU/(ft
2
*h).
2.1. FEATURES
• Sunlight measurement up to 1999W/m
2
/ 634BTU/(ft
2
*h)
• High accuracy and rapid response
• DATA HOLD function to hold measuring values
• Unit and sign display for easy reading
• Measuring unit selection among W/m
2
and BTU/(ft
2
*h)
• Manual scale selection
• Direct reading with no adjustments needed
• Maximum and minimum values
• Low battery indication
2.2. INSTRUMENT DESCRIPTION
LEGEND:
1. DATA HOLD active
2. MAX active
3. MIN active
4. Decimal point
5. Measured value
6. Measuring unit W/m
2
7. Measuring unit BTU/(ft
2
*h)
8. Low battery
LEGEND:
1. ON/OFF key
2. M-H key to select the maximum,
minimum or current reading
3. W/B key to select the measuring unit
W/m
2
or BTU/(ft
2
*h)
4. D-H key to hold displayed data
5. R key to select the full scale manually
Fig. 1: Instrument description
2.3. DESCRIPTION OF FUNCTION KEYS
2.3.1. ON/OFF key
Press the key to switch on and off the instrument.
2.3.2. M-H
key
By pressing key, maximum and minimum values are measured. The symbol
corresponding to the desired function is displayed: “MAX” for maximum value, “MIN” for
minimum value. To exit this function keep M-H key pressed for at least 1 second.