RAY
- Volume measuring component (DN 15 - 20)
- Calculator, contains hardware and software for measuring flow rate, temperature and energy consumption
- Temperature sensor permanently connected in integrator
-
COMPONENTS
-
Calculator - Basic features
Ambient class EN 1434 class C / MID E1 + M1 Protection class DIN 40050 / IEC-EN 60529 IP 54 (heat meter) | IP 65 with potted calculator (combined heating-cooling / cooling meter) Interfaces standard Optical ZVEI according IEC 870-5 Interfaces optional Radio, M-Bus, pulse output Note: IZAR@SET / HYDRO-SET Software for configuration of meters, reading of measured values and printout of meter logs. Available under www.diehl.com/metering (Products - downloads) -
Display
Display indication LCD, 7-digit Unit MWh - kWh - GJ - MJ - kW - m³/h - l/h - m³ - l Total values 9,999,999 - 999,999.9 - 99,999.99 - 9,999.999 Values displayed Power - energy - flow rate - temperature - energy on reading date - reading date -
Temperature input
Temperature sensor type Pt 500 / 2-wire Measuring cycle T s 32 Max. temperature difference ΔΘ K +147 Min. temperature difference ΔΘ K +3 Starting temperature difference ΔΘ K +0.25 Absolute temperature measurement range Θ °C 0 ... 150 -
Supply voltage
Operating voltage UN VDC 3.0 (lithium battery) Battery lifetime Up to 12 years Nominal power PN μW 30 -
Interfaces - Overview
Optical ZVEI interface for communication, M-Bus protocol M-Bus According to EN 1434-3. Data reading and parametrization are via two wires with polarity reversal protection. (Meter is powered with energy via M-Bus Master) Radio 868 MHz, Real Data or Open Metering Standard (OMS) Pulse output Output for heat meters or cooling meters (energy / volume), for cooling-heat meters (energy cooling / energy heating or energy cooling / total volume), for heat-cooling meters (energy heating / energy cooling or energy heating / total volume) -
Radio interface - Specification
Frequency MHz 868.95 Protocol Real Data (according EN 13757) or Open Metering Standard (OMS) Transmission power mW 10 Transmission interval sec. 64 Communication IZAR OH BT and HYDRO-SET or IZAR@MOBILE -
Volume- / energy pulse
Output type Open collector Max. frequency Hz 4 Max. input voltage V 30 Max. input current mA 27 Max. voltage drop at active output V/mA 2/27 Max. current through inactive output μA/V 0.5/30 Max. reverse voltage without destroying outputs V 6 Min. pulse duration ms 125 Min. pulse break ms 125
-
Product picture
Standard M-Bus, Pulse Radio -
General
Temperature range °C 5 ... 90 Ambient operating temperature °C 0 ... 55 Ambient storage temperature °C -20 ... 55 Nominal pressure PN bar 16 Mounting position In any position, also up side down Cable length of temperature sensor - installation in return pipe 1.5 m free / 0.4 m mounted in housing (forward sensor / return sensor) Cable length of temperature sensor - installation in forward pipe 0.4 m mounted in housing / 1.5 m free (forward sensor / return sensor) Approval MID (DE-07-MI004-PTB030) and PTB TR K7.2 (DE-19-M-PTB-0001) for cooling meter Dynamic range (qp/qi) R 1:25 / 1:50 / 1:100 -
Technical data
Nominal diameter DN mm 15 15 20 Nominal flow rate qp m³/h 0.6 1.5 2.5 Overall length L mm 110 110 130 Maximum flow rate qs m³/h 1.2 3 5 Permissible continuous load (HY) m³/h Minimum flow rate qi l/h 61 151 251 Starting flow rate l/h 1.5 - 2 3 - 4 5 - 6 Pressure loss at qp Δp mbar 243 243 242 Pressure loss at qp for installation in rising pipes mbar Pressure loss at qp for installation in downpipes mbar Flow rate at 0.1 bar pressure loss m³/h 0.385 0.962 1.607 Flow rate at 0.1 bar pressure loss - rising pipes m³/h Flow rate at 0.1 bar pressure loss - downpipes m³/h Kvs value (Δp=Q2/Kvs2) 1.2 3.0 5.1 1 at qp/qi 100 -
Dimensions
Nominal diameter DN mm 15 15 20 Nominal flow rate qp m³/h 0.6 1.5 2.5 Overall length L mm 110 110 130 Diameter Ø B mm DIMENSIONS - THREAD Overall length with coupling L2 mm 190 190 210 Connection thread on meter Inch G¾B G¾B G1B Connection thread of coupling Inch R½ R½ R¾ Height H mm Height H1 mm Weight without coupling kg Weight with coupling kg DIMENSIONS - FLANGE Flange diameter D mm Hole circle diameter K mm Number of screwholes pcs Screwhole diameter D1 mm Height H mm 20 20 20 Height H1 mm 75 75 75 Diameter Ø B mm 63 63 63 Width A mm Weight without coupling kg 0.9 0.9 1 Weight with coupling kg Weight with flanges kg -
Pressure loss graph / typical error graph
Pressure loss graph Typical error graph
