CORONA ER
CORONA ER
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.
- Inbuilt radio module 868 MHz
- 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
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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 Optical ZVEI, radio 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 Radio 868 MHz, real data, Open Metering Standard -
Radio interface - Specification
Frequency MHz 868 Protocol Real data, open metering Transmission power mW 10 Transmission interval sec. 64 Communication IZAR OPTO HEAD BT and HYDRO-SET or IZAR@MOBILE
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General
Temperature range °C 30 (for cold water meter) / 90 (for warm water meter) Ambient operating temperature °C 1 ... 55 Ambient storage temperature °C -20 ... 55 Nominal pressure PN bar 10 / 16 Mounting position In any position, also overhead -
Technical data
Nominal diameter DN mm 15 15 15 20 20 20 Permanent flow rate Q3 m³/h 2.5 2.5 2.5 4 4 4 Overall length L mm 110 130 165 105 130 190 Overload flow rate Q4 m³/h 3.125 3.125 3.125 5 5 5 Transitional flow rate Q2 l/h 32 32 32 51 51 51 Minimum flow rate Q1 l/h 201 201 201 321 321 321 Starting flow rate l/h 3 - 4 3 - 4 3 - 4 5 - 6 5 - 6 5 - 6 Pressure loss at Q3 Δp mbar 615 615 615 620 620 620 Flow rate at 0.1 bar pressure loss m³/h 0.962 0.962 0.962 1.607 1.607 1.607 1 at R 125 -
Approval
Nominal diameter DN mm 15 15 15 20 20 20 Permanent flow rate Q3 m³/h 2.5 2.5 2.5 4 4 4 Overall length L mm 110 130 165 105 130 190 MID (LNE 12552 | LNE 13629) - T30 • • • • • • MID (DE-07-MI001-PTB008 | LNE 13629) - T90 • • • • • • MID (LNE 14587) - T30/T90 Dynamic range (Q3/Q1) R 80 / 100 / 125 80 / 100 / 125 80 / 100 / 125 80 / 100 / 125 80 / 100 / 125 80 / 100 / 125 -
Dimensions
Nominal diameter DN mm 15 15 15 20 20 20 Permanent flow rate Q3 m³/h 2.5 2.5 2.5 4 4 4 Overall length L mm 110 130 165 105 130 190 Overall length with coupling L2 mm 186 206 241 181 206 266 Connection thread on meter Inch G¾B G¾B G¾B G1B G1B G1B Connection thread of coupling Inch R½ R½ R½ R¾ R¾ R¾ Flange diameter D mm Hole circle diameter K mm Number of screwholes pcs Screwhole diameter D1 mm Height H mm 20 20 20 20 20 20 Height H1 mm 75 75 75 75 75 75 Width B mm 62 62 62 62 62 62 Width A mm Weight without coupling kg 0.8 1 1.3 0.8 1 1.5 Weight with coupling kg 1 1.2 1.5 1.3 1.5 2 Weight with flanges kg -
Pressure loss graph / Typical error graph
Pressure loss graph Typical error graph
