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Contrc’s 212 Heat Calculator is designed to measure the energy consumed in hot water heating systems and chilled water cooling systems.
The 212 is supplied complete with temperature probes and will interface with a wide range of flowmeters, including positive displacement and inferential water meters, magnetic flowmeters with pulse outputs, turbine and paddle wheel flowmeters.
Provides flexibility to meet all applications
The 212 is able to cross international boundaries in heat meter applications. Multilingual capability, datalogging and peak/off-peak operation are standard. In addition, four modes of operation covering heating and cooling ensure that the 212 is flexible enough to meet all energy measurement applications.
The high accuracy of the 212 ensures that it meets European and International approvals for heat calculators.
Accuracy to OIML R75 Class 4 and EN1434
The 212 can be supplied with two precision 4-wire Pt100 RTDs and has inbuilt correction for the non-linearity of the RTDs. For chilled water measurement where the temperature difference (Δt) is likely to be small, provision is made in the set-up program to zero out any offset between RTDs. The 212 is fully programmable and all set-up data and totals are stored in a non-volatile memory for a minimum of 10 years.
Watertight wall or panel enclosure
The 212 Heat Calculator is housed in a rugged yet attractive IP66 (Nema 4X) rated polycarbonate enclosure which is completely watertight. Mounting is either by a wall bracket or by panel mount.
Integration with energy management systems
A Meter-bus interface enables the 212 Heat Calculator to be incorporated into energy management systems complying with European IEC 870-5 protocol, for interfacing to computers and DCS systems.
Datalogging flexibility
The 212 Heat Calculator will store energy totals by hour, day, week or month for up to 31 periods.The totals are stored for each period and can be downloaded to a computer via the Meter-bus or RS485 communications ports.
Features
Complies with OIML R75 and EN1434 Standards
Multilingual Capability
Heating, Cooling and Air Conditioning
Built-in Density and Enthalpy Tables
Meter-Bus Interface or RS485 Communications
Metric or US Units
4-Wire PT100 RTD Temperature Inputs
Fully Programmable
Calculates and Displays Volume, Energy, Temperatures and Peak Energy
Watertight to IP66 (Nema 4X)
High Accuracy
CE Compliant
4-20mA Output Option Typical plant diagram
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