Panametrics DigitalFlow DF868, Руководство по программированию, Страница: 23 / 160

DigitalFlow™ DF868 Multipurpose Ultrasonic Liquid Flowmeter Programming Manual (2-Channel) 13
Chapter 1. Programming Site Data
1.6.2.2 Energy Option
If you did not select the Energy Option earlier, the meter now returns to the initial SYSTEM prompt. But if you selected
the Energy Option, several more prompts appear.
1. Press [F1]-[F4] to select the desired Units for measuring power.
The abbreviations and definitions of all the available power units are shown in Table 5. The choices shown on the
option bar in the prompt screen above are determined by the selections made at the previous SYSTEM UNITS prompt
screen.
2. Press [F1]-[F4] to select the desired number of Decimal Digits (digits) to the right of the decimal point in the
power display.
3. Press [F1]-[F4] to select the desired Total Energy Units for measuring total energy.
The abbreviations and definitions of all the available total energy units are shown in Table 6. The choices shown on
the option bar in the prompt screen above are determined by the selections made at the previous SYSTEM UNITS
prompt screen.
4. Press [F1]-[F4] to select the desired number of Decimal Digits to the right of the decimal point in the total energy
display.
5. Press [F1] to make measurements in a Cooling system, or [F2] to make measurements in a Heating system .
6. Press [F1] to measure flow at the point of Return (where the liquid exits), or [F2] to measure flow at the point of
Supply (where the liquid enters) . The meter returns to the Channel PROGRAM screen.
Table 5: Power Units Options
English Power Units Metric Power Units
kBTU—Thousands of British
Thermal Units per Hour
kCAL/sec—Kilocalories/second
MMBTU—Millions of British
Thermal Units per Hour
MCAL/sec—
MegaCalories/second
kW—kilowatts kW—kilowatts
Tons MW—Megawatts
Table 6: Energy Units Options
English Energy Units Metric Energy Units
kBTU—Thousands of British
Thermal Units
kCAL—Kilocalories
MMBTU—Millions of British
Thermal Units
MCAL—MegaCalories
kWHr—Kilowatt-Hours kW—Kilowatt-Hour
Tons MW—Megawatt-Hour