CORONA E

CORONA E

Fully electronic compact water meter with impeller scanning for recording volume. Highly accurate recording of all billing data at medium temperatures up to 90 °C.

• 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

• Electronic - Basic features

  Ambient class			OIML R49 class C / MID E2 + M1
  Protection class			IP 54 or IP 68 for cold and warm water meter
  Interfaces standard			Optical ZVEI
  Interfaces optional1			M-Bus, L-Bus, pulse

  ¹ Possible combinations
  - M-Bus / pulse / pulse
  - L-Bus / forward pulse
  - only M-Bus
  
  Note: IZAR@SET / HYDRO-SET Software for configuration of meters, readout of measured values and printout of meter logs. Available under www.diehl.com/metering (Products - downloads)
• Technical data display

  Display indication			LCD, 7-digit
  Unit			m³/h - l/h - m³ - l
  Total values			99,999.99
  Values displayed			Flow rate

• 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)
  L-Bus			Interface for the radio module IZAR RADIO EXTERN
  Pulse			Output for volume

• Pulse interface - Specification

  Pulse rates		l/pulse	Decadic 0.1 ... 100
  Display			2 digits after comma
  Pulse value 1		l/pulse	0.1 (factory setting)
  Pulse value 2		l/pulse	1 (factory setting)
  Pulse variants			Two forward pulses; one forward and one backward pulse; pulse and direction signal

  Note: In the field the pulse values can be configured as desired in the specified value range.
• Volume- / Pulse

  Output type			Open collector
  Max. frequency		Hz	90
  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	5/30
  Max. reverse voltage without destroying outputs		V	6
  Min. pulse duration		ms	5.5 (at max. frequency of 90 Hz)
  Max. pulse duration		s	2
  Min. pulse pause		ms	5.5