RAY MC

Application

Fully electronic measuring capsule heat meter, heat and cooling meter or cooling meter with impeller scanning for volume measuring and energy calculation. Highly accurate recording of all billing data in a heating circuit or a cooling / heating circuit at medium temperatures from 5 °C up to 90 °C.

Features

• Electronic sensor control for recording flow rate
• Lithium battery, lifetime up to 12 years
• Optical ZVEI interface equipped as standard
• Adjustable reading date for billing
• Rotatable integrator
• Single-line 7-digit display for easy meter reading
• Can be installed in housings from the Diehl Metering range of accessories or in housings with a 2" coupling thread already available in the network

• Components

  Multi-jet volume measuring component (DN 15 - 20) Calculator, contains hardware and software for measuring flow rate, temperature and energy consumptionTemperature sensor permanently connected in integrator

• 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 heat-cooling / cooling meter)
  Interfaces standard			Optical ZVEI according IEC 870-5
  Interfaces optional			M-Bus, radio, pulse

  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	+102
  Min. temperature difference	ΔΘ	K	+3
  Starting temperature difference	ΔΘ	K	+0.25
  Absolute temperature measurement range	Θ	°C	0 ... 105
• 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) protocol
  Pulse			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
  Protocol			Real Data (according EN 13757) or Open Metering Standard (OMS)
  Transmission power		mW	10
  Transmission interval		sec.	64
  Communication			Via Bluetooth optohead and IZAR@SET / HYDRO-SET software or IZAR@MOBILE software
• Volume- / energy pulse

  Output type			Open collector
  Max. frequency		Hz	4
  Max. input voltage		V	30
  Max. input current		mA	100
  Max. voltage drop at active output		V/mA	2/27
  Max. current through inactive output		μA/V	5/30
  Max. reverse voltage without destroying outputs		V	6
  Min. pulse duration		ms	125
  Min. pulse break		ms	125