DATASHEET - COMPACT HEAT METER / COOLING & HEAT METER □ Fully electronic compact heat meter or compact cooling & heat meter with impeller scanning for recording energy □ Highly accurate recording of all billing data in a heating circuit or a cooling & heating circuit at medium tempera- □ Horizontal and vertical installation, also overhead for Model □ Electronic sensor control for recording flow rate □ Model 447/450 with direct electronic impeller scanning Model 448/449/451/452 with magnetic coupling for elec tronic scanning of sensor disc □ Lithium battery guarantees longer lifetime than calibration □ Optical ZVEI interface equipped as standard ■ Optional: M-Bus interface to EN 1434-3 ■ Optional: L-Bus output for HYDRO RADIO external ■ Optional: Pulse output for energy and volume for heat Pulse output for cold and heat energy in cool ing & heat meter (open-collector) □ Adjustable reading date for billing □ Volume measuring component □ Integrator, contains hardware and software for measuring flow rate, temperature and energy consumption □ Temperature sensor permanently connected in integrator □ Integration of all necessary circuits for recording flow rate and temperature and for calculating, logging and display- □ Compact design for simple installation of units □ Single-line, 7-digit display for easy meter reading □ The first memory in the cooling & heat meter, calibrated for □ Power supply from built-in lithium battery

DATASHEET - COMPACT HEAT METER / COOLING & HEAT METER VOLUME MEASURING COMPONENT □ See Technical data (pages 6 to 12) WK and. TEMPERATURE SENSORS Type Pt 500 temperature sensors to DIN EN 60751 are used The temperature sensors are permanently connected to the integrator with the following cable length:the integrator with the following cable length: □ Ball valves for mounting temperature sensors □ Adapters for direct mounting of temperature sensors □ Data cables for M-Bus, L-Bus and pulse output □ ZVEI optical probe □ HYDRO RADIO external Software parametrization tool based on the M-Bus and optical...

DATASHEET - COMPACT HEAT METER / COOLING & HEAT METER ^^R/J^f * HEAT METER since initial operation Segment test of LC display, then automatic change to date read- Attention: changeover time Energy on reading date in selected energy unit Reading date Alternates between Energy H -> heat on reading date and reading If the first reading date has not yet been reached, the production date forward temp., always in °C to return temp., always in °C to 1 decimal place temp, difference, always in current power, always in kW, even if basic display accumulated volume since next reading date secondary address...

R/^jf @ DATASHEET - COMPACT HEAT METER / COOLING & HEAT METER COOLING & HEAT METER Accumulated cold since initial operation calibrated memory Basic display Accumulated heat since initial operation uncalibrated memory cold on reading date cold reading date heat on reading date heat reading date Segment test of LC display, then automatic change to date Attention: changeover time 4 Alternates between energy on reading date and reading date If the first reading date has not yet been reached, the produc- tion date is shown. m forward temp., always in °C to return temp., always in SW version number...

DATASHEET - COMPACT HEAT METER / COOLING & HEAT METER TECHNICAL DATA FOR INTEGRATOR Data reading and parametrization are via two wires with polarity reversal protection (white/grey). The cabling for an M-Bus system requires no specified cable routing or network (e.g. star, series, etc.). The outputs are open-collector circuits. The collector branch contains only 0 ohm resistance, i.e. there is no internal current limiting. If required, this must be pro- vided externally by a collector resistor. 'Cooling & Heat Meter "EC= Energy cold (white) "EH= Energy heat (green)

R/3^f@ DATASHEET - COMPACT HEAT METER / COOLING & HEAT METER TECHNICAL DATA FOR FLOWSENSOR TYPISCHE ERROR GRAPH HEAD LOSS DIAGRAM ^—^— Typical Measuring RAY-HEAT® TECHNICAL DATA *Zeta value applies for the stated nominal diameter.

DATASHEET - COMPACT HEAT METER / COOLING & HEAT METER ^H?/5^f* ORDER PREFERENCES Heat meter M-MKWZR: The types listed are standard versions for installation in the return pipe/low temp. Cooling & heat meter M-MKKWZR: The types listed are standard versions for installtion in the return pipe/high temp.

DATASHEET - COMPACT HEAT METER / COOLING & HEAT METER MODEL 447 TO 452 TECHNICAL DATA FOR FLOW SENSOR BR 448 M-TWZ BR 451 M-TKWZ HEAD LOSS DIAGRAM TYPICAL ERROR GRAPH Measuring accurancy PTB class B Qmin Qn 3,5 250 200 Qn 6,0 Qn 10 150 100 Qtr +4 Head loss[mbar] +5 Qn +3 Error [%] +2 +1 50 40 30 +-0 20 -1 -2 9,00 10,00 11,00 12,00 8,00 7,00 6,30 4,50 5,00 5,50 3,50 3,80 4,00 2,20 2,40 2,60 2,80 3,00 1,80 2,00 1,60 1,40 1,20 Flow rate [l/h] -5 1,00 10 -4 0,60 -3 Flow rate [m3/h] TECHNICAL DATA M-TWZ Flow rateranges Head loss Starting flows Operating pressure Connection Overall length Medium Installation...

DATASHEET - COMPACT HEAT METER / COOLING & HEAT METER DIMENSIONS FLANGE M-TWZ WITH FLANGE DIMENSIONS M-TFWZ/M-TSWZ ORDER PREFERENCES Heat meter M-TWZR: The types listed are standard versions for installation in the return pipe/low temp.

R/^jf @ DATASHEET - COMPACT HEAT METER / COOLING & HEAT METER ORDER PREFERENCES Heat meter M-TKWZR: The types listed are standard versions for installation in the return pipe / high temp. TECHNICAL DATA FOR FLOW SENSOR _ HEAD LOSS DIAGRAM

DATASHEET - COMPACT HEAT METER / COOLING & HEAT METER TECHNICAL DATA FOR FLOW SENSOR

R/^jf @ DATASHEET - COMPACT HEAT METER / COOLING & HEAT METER ORDER PREFERENCES Heat meter WS-TWZR The types listed are standard versions for installation in the return pipe / low temp. Cooling-, Heatmeter WS-TKWZR The types listed are standard versions for installation in the return pipe / high temp. □ HYDROMETER GmbH PO.Box 1462-91505 Ansbach/Germany □ Delivery address: Industriestrasse 13 -91522 AnsbaclVGermany