Proline Prowirl R 200 HART Commissioning
Endress+Hauser 135
Ethane
1)
Propane
1)
Butane
1)
Ethylene (ethene)
1)
Vinyl chloride Mixtures of up to 8 components of these gases
1)
1) The energy flow is calculated as per ISO 6976 (contains GPA 2172) or AGA5 - in relation to the net
calorific value or gross calorific value .
Energy flow calculation
Volume flow × operating density × specific enthalpy
• Operating density for saturated steam and water: depends on the temperature
• Operating density for superheated steam, natural gas ISO 6976 (contains GPA 2172),
natural gasAGA5: depends on the temperature and pressure
Heat flow difference
• Between saturated steam upstream from a heat exchanger and condensate downstream
from the heat exchanger (second temperature read in via current input/HART) in
accordance with IAPWS-IF97/ASME → 27
• Between warm and cold water (second temperature read in via current input/HART) in
accordance with IAPWS-IF97/ASME
Vapor pressure and steam temperature
The measuring device can perform the following in saturated steam measurements
between the feed line and return line of any heating liquid (second temperature read in via
current input/HART and Cp value entered:
• Calculation of saturation pressure of steam from the measured temperature and output
in accordance with IAPWS-IF97/ASME
• Calculation of saturation temperature of steam from the preset pressure and output in
accordance with IAPWS-IF97/ASME
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