The Contrec 515 SC02 is a reliable solution for measuring the volume, mass, and energy content of steam. It uses analog volume flow along with temperature and/or pressure inputs to provide accurate readings.
This flow measurement device offers various modes, making it ideal for a wide range of steam applications. You can choose the Flowmeter input signal as either 0-5V, 1-5V, or 4-20mA. You can also program minimum and maximum points, and use non-linear correction points to enhance the accuracy of the flowmeter’s performance. According to the IAPWS Industrial Formulation (1997), this instrument effectively calculates mass flow and energy by utilizing pressure and temperature values to determine specific volume and specific enthalpy.
CALCULATIONS
The calculations for steam energy are based on the IAPWS Industrial Formulation (1997).
Superheated steam regions include:
0°C < t < 800°C, P < 100MPa
32°F < t < 1472°F, P < 14500psia
800°C < t < 2000°C, P < 10MPa
1472°F < t < 3632°F, P < 1450psia
Saturated steam regions include:
0°C < t < 374°C (critical temperature)
32°F < t < 705°F
P < 22MPa (critical pressure)
P < 3190psia
Water region:
0°C < t < t saturation at system pressure
32°F < t < t saturation at system pressure
Formulas
Mass flow = Volume flow / Specific volume
Energy flow = Mass flow x Specific enthalpy
