Heat Calculator Flow Computer
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Model 515 Application HC01 Heat Calculator Flow Computer for Frequency Flowmeters The 515 HC01 application measures the volume, mass and energy content of fluid in a heating or cooling system by using frequency volume flow input in conjunction with analog feed and return temperature inputs. This instrument can calculate the mass and energy for the following common industry fluids: Suited for heating and/or cooling operation Uses IAPWS-IF97 to determine water properties Selection of common industry fluids using internal tables Facility for user defined Enthalpy and Density table Flow meter can be located in feed or return line Selection of second language and user tags RTC logging with over 1000 entries Programmable pulse width and scaling of pulse output 4-20 mA retransmission RS-232 and RS-485 (optional) serial ports Modbus RTU, Printer and other serial port protocols Front panel adjustment of 8-24 V DC output voltage Backlit display A selection of fluids types and modes makes it suitable for many heating/cooling applications. The instrument is compatible with a wide range of flowmeter frequency outputs. Millivolt signals, reed switches, Namur proximity switches or pulse trains can be selected via its smart front-panel programming. Water Glycol (35% Solution) Brine (27% CaCl2) TYFOXIT F20 TYFOXIT F40 Essotherm 500 / Thermaloil THERMINOL 55 User Custom Fluid Formulas Mass flow = Volume flow x flow Power = Mass flow x (hTF - hTR) The instrument calculates the mass flow and energy according to the IAPWS Industrial Formulation (1997) when the fluid type is water, while internal enthalpy and density tables are used for the selection of other industry fluids. where: flow = density at flow conditions = Specific enthalpy at feed temperature = Specific enthalpy at return temperature Feed Flow Flowmeter Return Flow

Displayed Information All set-up parameters, totals and logged data are stored in non-volatile memory with at least 30 years retention. The front panel display shows the current values of the input variables and the results of the calculations. A list of the variables for this application and their type (total or rate) is shown at the end of this document. Temperature Input Types The instrument can be supplied with a real-time clock for data logging of over 1000 entries of the variables as displayed on the main menu. Terminal Designations Temperature sensor input(s) can be either PT100,...

Specifications Operating Environment Temperature Humidity Power Supply Consumption Protection Dimensions (panel option) -20 °C to +60 °C (conformal coating) +5 °C to +40 °C (no coating) 0 to 95% non condensing (conformal coating) 5% to 85% non condensing (no coating) 100-240 V AC (+/-10%) 50-60 Hz (+/-10%) or 12-28 V DC 6 W (typical) Sealed to IP65 (Nema 4X) when panel mounted Digits Characters LCD Backup Update Rate Backlit LCD with 7-digit numeric display and 11-character alphanumeric display 15.5 mm (0.6") high Signal Type Overvoltage Last data visible for 15 min after power down 0.3...

Ordering Information Product Codes Model Supplementary Code Field mount enclosure (NEMA 4X / IP66) Explosion proof Ex d (IECEx/ATEX), metric glands (5 specifies heater) Panel mount enclosure Explosion proof Ex d (CSA), NPT glands (6 specifies heater) 0 1 4 logic inputs, 2 isolated outputs, 4 relays, real-time clock data logging, RS232 (DB9) and RS485 communication ports Output Options 4 logic inputs, 1 isolated output, 2 relays (only relay type 1 is available), RS232 (DB9) communication port 4 logic inputs, 2 isolated outputs, 4 relays, real-time clock data logging, RS232 (DB9) and...