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Features

Interchangeable battery and temperature sensor
Wired and wireless communication
IP68 protection
Self flow conditioning mechanism

Hydrasonic i8 meter is designed for commercial metering of the heating and cooling energy when the heat transfer medium is water; it is used in the district cooling facilities in residential buildings, companies and institutions.

ADVANTAGES:

Heating and cooling energy is stored in separate registers. Possibility to use rate tariffs.
Programmable dates for annual and monthly reports. Registration of maximal monthly parameter value, etc.
Provided with remote data transfer modules with M-Bus, CL or wireless radio link interfaces.
Modular design allowing replacement of communication modules, battery and temperature sensors.

General

Application	-	Heating - bifunctional (heating/cooling) \| Heat-transfer fluid: glycol-free water
Approval	-	MID (DE-10-MI004-PTB013)
Mounting position flow sensor	-	Any position, calming sections not necessary
Protection class flow sensor		Heating: IP 54 \| Bifunctional (heating/cooling): IP 65
Battery supply		3.6 VDC- D-cell up to 16 years lifetime*
Mains supply		24 VAC; 230 VAC
Temperature sensor type		Pt 500 with 2-wires ; Ø 5.2 mm or direct sensor
Cable length of temperature sensor		Pt 500: 2 / 3 / 5 / 10 m
Absolute temperature range calculator	°C	+1 ... +180
Flow measuring cycle		With power supply: ⅛ s \| with D-cell battery: 1 s
Material of the flow sensor body	-	Brass (qp1.5 ... 10 m³/h) or cast iron (qp15 ... 100 m³/h)
Test possibilities		Via display, optical test pulses, test output or via NOWA software

Calculator- Basic Features

Environmental class (EN 1434)		Class C
Ambient class (MID)		Class E2 + M2
Ambient operating temperature	°C	+5 ... +55
Ambient storage temperature	°C	-25 ... +60 (>35 °C max. 4 weeks)
Protection class		IP 54
Communication		3 communication slots (e. g. M-Bus + M-Bus + integrated radio; 2 primary addresses, 1 secondary address)
Integrated Radio		Optional
Interfaces standard		Optical ZVEI interface
Interfaces optional		2 Slots for modules with M-Bus, L-Bus, RS232, RS485, pulse output, pulse input, combined pulse in-/output or analogue output
Temperature range heating	°C	+5 ... +130 / +150 (depending on meter size)
Temperature range cooling	°C	+5 ... +90
Temperature range heating/cooling meter	°C	+5 ... +105
		Periodical log1 \| history log \| event memory

Calculator- Integrated Radio

Frequency band	868 or 434 MHz
Type of radio telegram	Real Data or Open Metering Standard (OMS)
Transmission data updating	Online - no time delay between value measurement and data transmission
Data transmission	Unidirectional
Sending interval	12 s (up to 16 years lifetime*); depending on telegram length (duty cycle)

Display

Display indication	LCD, 8-digit
Units	MWh - kWh - GJ - Gcal - MBtu - gal - GPM - °C - °F - m
Total values	99,999,999 - 9,999,999.9 - 999,999.99 - 99,999.999 (depending on the nominal diameter)
Displayed values	Energy - Volume - Flow rate - Power - Temperature

Interfaces

Optical	ZVEI interface for communication and testing, M-Bus protocol
M-Bus	Configurable telegram, according to EN13757-3, data reading and parametrization via 2 wires with polarity reversal protection, auto baud detect (300 and 2,400 baud), 2 M-Bus outputs with 2 primary addresses
L- Bus	Adapter for external radio module, configurable telegram, according to EN13757-3, data reading and parametrization via 2 wires with polarity reversal protection
RS232	Serial interface for communication with external devices, a special data cable is required, MBus protocol, 300 and 2,400
RS485	Serial interface for communication with external devices, power supply with 12 V ± 5 V, M-Bus protocol, 2,400 baud
Pulse output	Module with 2 Open Collector pulse outputs (potential-free), output 1: 4 Hz (pulse width 125 ms) pulse or static conditions (e.g. errors); output 2: 200 Hz (pulse width ≥ 5 ms), ratio: pulse duration/pulse break ~ 1:1, configurable via IZAR@MOBILE 2 software
Pulse input	Module with 2 pulse inputs, max. 20 Hz, configurable via IZAR@MOBILE 2 software, data can be transferred remotely
Combined pulse in-/output	Module with 2 pulse inputs and 1 pulse output, configurable via IZAR@MOBILE 2 software, needed for leak detection
Analogue output	Module with 2 pulse inputs and 1 pulse output, configurable via IZAR@MOBILE 2 software, needed for leak detection

Temperature Input

Measuring cycle T	s	With mains supply: 2 s \| with D-cell battery: 4 s
Starting temperature difference ΔΘ	K	0.125
Min. temperature difference ΔΘmin	K	3
Max. temperature difference ΔΘmax	K	175

Flow Sensor Technical Data

Nominal flow rate	qp	m3/h	0.6	1.5	1.5	2.5	6	6	10	15	25	40	60	100
Nominal diameter	DN	mm	15	15	20	20	25	32	40	50	65	80	100	100
Overall length	L	mm	110	110	130	130	260	260	300	270	300	300	360	360
Starting flow rate		l/h	1	2.5	2.5	4	10	10	20	40	50	80	120	120
Minimum flow rate (DR 1:250)	qi	l/h	-	6	6	10	24	24	40	60	100	160	240	240
Minimum flow rate (DR 1:100)	qi	l/h	6	15	15	25	60	60	100	150	250	400	600	1000
Maximum flow rate	qs	m3/h	1.2	3	3	5	12	12	20	30	50	80	120	120
Overload flow rate		m3/h	2.5	4.6	4.6	6.7	18.4	18.4	24	36	60	90	132	132
Operating pressure	PN	bar	16/25	16/25	16/25	16/25	16/25	16/25	16/25	16/25	16/25	16/25	25	25
Pressure loss at qp	Δp	mbar	95	120	75	100	128	165	140	140	75	80	75	210
Temp. range heating		°C	5....130	5....130	5...130	5...130	5....150	5....150	5...150	5...150	5....150	5...150	5...150	5...150
Kvs value (Δp=Q2/Kvs2)			1.95	4.33	5.48	7.91	16.77	14.77	26.73	40.09	91.29	141.42	218.22	218.22

Dimensions - Thread Version

Nominal flow rate	qp	m3/h	0.6	1.5	1.5	2.5	6	6	10	15	25	40	60	100
Nominal diameter	DN	mm	15	15	20	20	25	32	40	50	65	80	100	100
Overall length	L	mm	110	110	130	130	260	260	300	270	300	300	360	360
Overall length with coupling	L2	mm	190	190	230	230	380	380	440	-	-	-	-	-
Length of calculator	L1	mm	150	150	150	150	150	150	150	-	-	-		-
Height	H	mm	14.5	14.5	18	18	23	23	33	-	-	-	-	-
Height	H1	mm	82	82	84	84	88.5	88.5	94	-	-	-		-
Height of calculator	H2	mm	54	54	54	54	54	54	54	-	-	-	-	-
Width of calculator	B	mm	100	100	100	100	100	100	100	-	-	-		-
Connection thread on meter		inch	G¾B	G¾B	G1B	G1B	G1¼B	G1½B	G2B	-	-	-	-	-
Connection thread of coupling		inch	R½	R½	R¾	R¾	R1	R1¼	R1½	-	-	-		-
Weight		kg	0.76	0.76	0.85	0.85	1.5	1.5	3.1	-	-	-	-	-

Dimensions - Flange Version

Nominal flow rate	qp	m3/h	0.6	1.5	1.5	2.5	6	6	10	15	25	40	60	100
Nominal diameter	DN	mm	15	15	20	20	25	32	40	50	65	80	100	100
Overall length	L	mm	110	110	130	130	260	260	300	270	300	300	360	360
Length of calculator	L1	mm	-	-	-	-	150	150	150	150	150	150	150	150
Height	H	mm	-	-	-	-	50	62.5	69	73.5	85	92.5	108	108
Height	H1	mm	-	-	-	-	88.5	88.5	94	99	106.5	114	119	119
Height of calculator	H2	mm	-	-	-	-	54	54	54	54	54	54	54	54
Width of calculator	B	mm	-	-	-	-	100	100	100	100	100	100	100	100
Flange dimension	F	mm	-	-	-	-	100	125	138	147	170	185	216	216
Flange diameter	D	mm	-	-	-	-	114	139	148	163	184	200	235	235
Hole circle diameter	K	mm	-	-	-	-	85	100	110	125	145	160	190	190
Screwhole diameter	D1	kg	-	-	-	-	14	18	18	18	18	19	22	22
Number of screwholes		pcs	-	-	-	-	4	4	4	4	8	8	8	8
Weight brass body		kg	-	-	-	-	3.5	4.8	6.4	7.0	8.9	10.9	16.4	16.4
Weight grey cast iron body		kg	-	-	-	-	-	-	-	5.9	7.7	9.6	15.2	15.2

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Product Datasheets Hydrasonic i8	PDF	Download