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Measuring principle
Energy manager
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Measuring principle
Energy manager
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Function
Monitoring and billing of energy in saturated and superheated steam applications (steam heat flow, heat difference.
Typical applications can be found in food & beverage industry, chemical industry, pharmaceutical industry, power plants, building automation and skid builders. -
Calculations
IAPWS-IF97
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Number of applications
Not defined
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Data storage
yes
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Calculation standards
IAPWS-97
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Communication
web server
USB
Ethernet
Modbus RTU/TCP Slave
M-Bus -
Power supply
Not defined
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Loop power supply
Low voltage power supply:
100 bis 230 V AC (-15% / +10%)
Small voltage power supply:
24 V DC (-50% / +75%)
24 V AC (±50%) -
Protection class
IP65
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Input
1x Puls/Analog for flow
2x RTD/Analog for temperature and pressure
Loop power supply 24V DC (+/-16%) -
Output
1x 4…20mA
2x digital (Open Collector) -
Dimensions (WxHxD)
144 x 144 x 103.1 mm (5.67″ x 5.67″ x 4.06″)
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Operation
3 button on site or via FieldCare
read out of historical / logged data via Field Data Manager Software (SQL database and visualization interface)
selectable language -
Display
160 x 80 Dot-Matrix LCD with white backlit
colour change in case of alarm event
active display area 70 x 34 mm -
Software functions
Calculated Values:
Energy, volume, density, enthalpy, DP-Flow
Counters:
volume, mass, energy, counter in case of failure
Optional:
tariff 1, tariff 2 or seperated heating energy, cooling energy, bilance energy -
Certificates
CE
CSA GP
MID 004
OIML R75
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Measuring principle
Energy manager
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Function
Monitoring and billing of energy in saturated and superheated steam applications (steam heat flow, heat difference; typical applications can be found in food & beverage industry, chemical industry, pharmaceutical industry, power plants, building automation and skid builders
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Certification
CE, UL listed, CSA GP
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Input
1x Puls/Analog for flow,
2x RTD/Analog for temperature and pressure,
Loop power supply 24V DC (+/-16%) -
Output
1x 4…20mA,
2x digital (Open Collector) -
Relay output
2x
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Auxiliary power supply
Low voltage power supply: 100 bis 230 V AC (-15% / +10%); Small voltage power supply: 24 V DC (-50% / +75%), 24 V AC (±50%)
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Dimensions (wxhxd)
144 x 144 x 103.1 mm
(5.67″ x 5.67″ x 4.06″) -
Software
Calculated Values:
Energy, volume, density, enthalpy, DP-Flow;
Counters: volume, mass, energy, counter in case of failure
Optional: tariff 1, tariff 2 or seperated heating energy, cooling energy, bilance energy -
Operation
3 button on site or via FieldCare; read out of historical / logged data via Field Data Manager Software (SQL database and visualization interface), selectable language
-
Display
160 x 80 Dot-Matrix LCD with white backlit, colour change in case of alarm event, active display area 70 x 34 mm
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Others
electronic temperature sensor matching via CvD coefficients, logbook measured values, custody transfer logbook, event logbook, limit monitoring
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Calculations
IAPWS-IF97
Field of application
The steam calculator EngyCal RS33 is used to record steam mass and energy flow of saturated and superheated steam. The calculation is based on the measured process variables volume flow, temperature and/or pressure.The EngyCal RS33 uses the standard IAPWS IF97 to calculate the mass and energy flow of steam. The density and enthalpy of the steam are calculated from the input variables pressure and temperature.
Recording and billing energy quantities in steam applications (steam heat quantity, steam heat differential). Typical applications include:Food industryChemical industryPharmaceutical industryPower plantsBuilding systems and plant engineering
Benefits
Compensation of differential pressure flow measurementCalculation according to international water steam tablesElectronic matching of the temperature sensor (sensor-transmitter matching) with the arithmetic unit enables highly accurate temperature measurementDetailed data logging of current and counter values and of error messages, off-limit conditions and changes to operating parametersStandard models are suitable for connecting and supplying all common flow transmitters, temperature sensors and pressure sensorsRemote readout via Ethernet and fieldbusesDeficit counter for transparency in case of error or alarm