Ray Model0 pages

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HYDROMETER

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DATASHEET - COMPACT HEAT METER / COOLING & HEAT METER

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MODEL 447 TO 452__________________________________________________________

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22.52

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00.02

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BR 447 M-MKWZ

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BR 450 M-MKKWZ

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EN 1434

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BR 448 M-TWZ

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BR 451 M-TKWZ

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01.02

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BR 449 WS-TWZ

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BR 452 WS-TKWZ

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APPLICATION

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□ Fully electronic compact heat meter or compact cooling &

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heat meter with impeller scanning for recording energy

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and volume data.

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□ Highly accurate recording of all billing data in a heating

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circuit or a cooling & heating circuit at medium tempera-

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tures up to 90 °C.

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□ Horizontal and vertical installation, also overhead for Model

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447/450.

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FEATURES

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□ Electronic sensor control for recording flow rate

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□ Nominal size qp 0.6 to qp 60 m3/h

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□ Temperature range 5 °C...90 °C

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□ Model 447/450 with direct electronic impeller scanning

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Model 448/449/451/452 with magnetic coupling for elec

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tronic scanning of sensor disc

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□ Lithium battery guarantees longer lifetime than calibration

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interval

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□ Optical ZVEI interface equipped as standard

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□ Primary interface

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■ Optional: M-Bus interface to EN 1434-3

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■ Optional: L-Bus output for HYDRO RADIO external

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■ Optional: Pulse output for energy and volume for heat

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meter

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Pulse output for cold and heat energy in cool

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ing & heat meter (open-collector)

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□ Adjustable reading date for billing

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□ Rotatable integrator

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COMPONENTS

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□ Volume measuring component

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□ Integrator, contains hardware and software for measuring

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flow rate, temperature and energy consumption

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□ Temperature sensor permanently connected in integrator

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INTEGRATOR

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□ Integration of all necessary circuits for recording flow rate

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and temperature and for calculating, logging and display-

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ing data

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□ Compact design for simple installation of units

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□ Single-line, 7-digit display for easy meter reading

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□ The first memory in the cooling & heat meter, calibrated for

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cold

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□ Power supply from built-in lithium battery

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