HYDRUS 2.0 RESIDENTIAL

ULTRASONIC METER

Application

HYDRUS 2.0 RESIDENTIAL is a static water meter operating on ultrasonic measuring technology. This technology enables accurate calculation of water consumption with long-term stability and eliminates measuring deviations caused by sand, suspended particles, scale or air pockets. Moreover it does not require any earthing. Developed within the framework of the MID, HYDRUS 2.0 RESIDENTIAL complies with the European regulations and holds sanitary conformity certificates (ACS, WRAS, BELGAQUA, DM174 and others). The meter is also designed for cold and hot water.
Its integrated radio enables remote reading of the meter's index and alarms both in mobile (walk-by, drive-by, passive drive-by) and fixed network mode.
HYDRUS 2.0 RESIDENTIAL offers a wide choice of connectivities compatible with the different IZAR reading modes. A complete Diehl Metering solution is thus available to meet your needs.

Features

DN 15 to 50
MID approval up to R=800
IP 68
OMS radio, mioty® for Metering radio, Wired M-Bus/Pulse x2, OMS radio/L-Bus/Pulse, Pulse x2, Remote radio with IZAR BE PULSE
Display with symbols and error codes
Alarm functions
Battery lifetime up to 16 years
U0 / D0, no calming section needed

Privacy

The HYDRUS 2.0 RESIDENTIAL saves 1024 consumption values with a daily interval. This data can be read locally and accessed only by using the IZAR@MOBILE. A second logging stores 32 monthly values. Both the radio protocol and the optical interface are encrypted by default.
Reach

Information pursuant to Article 33 (1) of Regulation (EC) No 1907/2006 of the European Parliament and of the Council of 18 December 2006:
This product series contains components with the following substances in a concentration of more than 0.1% weight by weight
(w/w):
- Lead (only for the flange variants) - (CAS no.: 7439-92-1)
- Lead titanium zirconium oxide (CAS no.: 12626-81-2)

General

Medium temperature range		°C	+0.1 ... +90
Ambient operating temperature		°C	-10 ... +55
Ambient storage temperature		°C	-10 ... +70 (>35 °C max. 4 weeks)
Environmental class			O (Outdoors)
Mechanical environmental class			M2
Electromagnetic environmental class			E2
Nominal pressure	PN	bar	16
Power supply			2x 3.6 VDC lithium batteries
Battery lifetime T30¹/T50¹			Up to 16 years
Battery lifetime T70¹/T90¹			Up to 16 years
Communication interfaces			Optical, OMS 434 or 868 MHz, M-Bus, L-Bus and Pulse
Data storage			For errors, alarms and measuring values, data logging capabilities to record up to 1024 daily values +32 monthly values and two annual due dates
Protection class			IP 68

¹ Theorical lifetime, depends on the sending interval of the radio telegram, the telegram length and the ambient temperature at the installation.

Technical Data Display

Display indication			LCD, 9-digit, additional symbols/display counter/unit
Units displayed DN15 - DN40			Volume (m³ + 3 digits after decimal point) and flow rate (m³/h + 3 digits after decimal point)
Units displayed DN50			Volume (m³ + 2 digits after decimal point) and flow rate (m³/h + 3 digits after decimal point)
Values displayed			Display test - volume - battery lifetime - firmware version - software checksum - flow rate - current/continuous/historical error - alarm status - high resolution volume - due date - due date volume - reverse volume - flow direction - display counter - low battery indication - leakage indication - metrological log access - radio signal ON/OFF - alarm indication - billing symbol

Communication interfaces

Optical			For switching the display menu, reading and configuration with IZAR@MOBILE
Radio			434 or 868 MHz, Open Metering Standard (OMS): mobile telegram sent every 14 seconds + fixed network telegram sent every 15 minutes, mioty® for Metering: mobile telegram sent every 64 seconds + fixed network telegram sent every 60 minutes
M-Bus			2,400 baud, cable length 1.5 m*, power supply only via built-in battery
L-Bus			Only active when radio is deactivated
Pulse (Open drain)			1 or 2 pulse outputs with cable length 1.5 m, Pulse output soldered with IZAR BE PULSE cable lenght 1.5m

*May vary by up to ± 3.5% due to manufacturing tolerances

Security

Versions OMS Generation 3 - Profile A or OMS Generation 4 - Profile B

Volume / Pulse Open Drain

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 (in case current does not exceed 27 mA)
Pulse rates	l/pulse	1 / 10 (depending on nominal diameter)
Configuration pulse output 1		Total volume or forward volume
Configuration pulse output 2		Flow direction, error, reverse volume or forward volume
Pulse frequency		Max. frequency 10 Hz
Pulse width		50 - 125 ms

Available versions

OMS radio + Pulse / L-Bus + Pulse			3 wires - radio and forward volume on pulse output / 3 wires - L-Bus and forward volume on pulse output
Wired M-Bus + Pulses x2			5 wires - forward volume on pulse output 1 and reverse volume on pulse output 2
Pulses x2			4 wires - total volume on pulse output 1 and direction on pulse output 2 with fraud
Remote radio with IZAR BE PULSE			With IZAR BE PULSE completly soldered to HYDRUS 2 to put a radio clip-on module (LoRaWAN, Wize, OMS)

DN 15 - 20
DN 25 - 50

Technical Data

Nominal diameter	DN	mm	15	15³	15	15	20	20	20	20	20
Permanent flow rate	Q₃	m³/h	2.5	2.5	2.5	2.5	2.5	2.5	4	4	4
Overall length	L	mm	110	115	165	170	130	190	130	165	190
Dynamic (Q₃/Q₁)	R		800	800	800	800	800	800	800	800	800
Overload flow rate	Q₄	m³/h	3.125	3.125	3.125	3.125	3.125	3.125	5	5	5
Transitional flow rate	Q₂	l/h	5	5	5	5	5	5	8	8	8
Minimum flow rate	Q₁	l/h	3.13	3.13	3.13	3.13	3.13	3.13	5	5	5
Starting flow rate		l/h	1.4	1.4	1.4	1.4	1.4	1.4	2.5	2.5	2.5
Pressure loss at Q₃		bar	0.46	0.46	0.46	0.46	0.4	0.4	0.4	0.4	0.4
Pressure loss at Q₄		bar	0.72	0.72	0.72	0.72	0.63	0.63	0.63	0.63	0.63
Maximum flow rate²	Q_high	m³/h	4.37	4.37	4.37	4.37	4.37	4.37	7	7	7
Flow rate at ΔP = 1 bar			3.69	3.69	3.69	3.69	3.95	3.95	5.39	5.39	5.39

² Outlet pressure minimum 3 bars, maximum 100 hours per year, closed pipeline network
³ Please see table DIMENSIONS
Other on request

Approval

Approval MID DE-19-MI001-PTB012 | UK/0126/0326
Dynamic range (Q₃/Q₁) R Up to R=800
Standards ISO 4064 | EN 14154 | OIML R49
Sanitary conformity ACS | WRAS | DM174 | BELGAQUA | KIWA
Dynamic Range (R=Q3/Q1)

Q₃ 2.5 m³/h - T30 / T50 R 800
Q₃ 2.5 m³/h - T70 / T90 R 800H / 400V
Q₃ 4 m³/h - T30 R 800
Q₃ 4 m³/h - T50 / T70 / T90 R 800H / 400V
H=horizontal installation position / V=vertical installation position
Other values on request

Dimensions

Nominal diameter	DN	mm	15	15³	15	15	20	20	20	20	20
Permanent flow rate	Q₃	m³/h	2.5	2.5	2.5	2.5	2.5	2.5	4	4	4
Overall length	L	mm	110	115	165	170	130	190	130	165	190
Counter length	L1	mm	89	89	89	89	89	89	89	89	89
Counter width	B	mm	89	89	89	89	89	89	89	89	89
Body			brass/composite	brass/composite	brass/composite	brass/composite	brass	brass/composite	brass	brass	brass/composite
Overall length with coupling	L2	mm	190	195	245	250	230	290	230	295	290
Connection thread on meter		Inch	G¾B	G¾B	G¾B	G¾B	G1B	G1B	G1B	G1B	G1B
Connection thread of coupling		Inch	R½	R½	R½	R½	R¾	R¾	R¾	R1	R¾
Height	H1	mm	71	71	71	71	74	74	74	74	74
Weight without coupling (approx.)		kg	0.7 / 0.5	0.7 / 0.5	0.8 / 0.6	0.8 / 0.6	0.8	0.9 / 0.6	0.8	1.0	0.9 / 0.6
Weight with coupling (approx.)		kg	1.1 / 0.9	1.1 / 0.9	1.2 / 1.0	1.2 / 1.0	1.2	1.3 / 1.0	1.2	1.6	1.3 / 1.0
Height	H	mm	18	18	18	18	21	21	21	27	21

³ Further version with connection thread on meter inlet G7/8B and meter outlet G3/4B on request

Pressure loss graph / Typical error graph

Pressure loss graph

Typical error graph

Technical Data

Nominal diameter	DN	mm	25	25	32	40	40	50	50	50	50
Permanent flow rate	Q₃	m³/h	6.3	10	10	16	16	16	16	25	25
Overall length	L	mm	260	260	260	200	300	270	300	270	300
Dynamic (Q₃/Q₁)	R		400	800	800	800	800	250	250	400	400
Overload flow rate	Q₄	m³/h	7.87	12.5	12.5	20	20	20	20	31.25	31.25
Transitional flow rate	Q₂	l/h	25.2	20	20	32	32	102	102	100	100
Minimum flow rate	Q₁	l/h	15.8	12.5	12.5	20	20	64	64	62.5	62.5
Starting flow rate		l/h	5	5	5	8.7	8.7	25	25	25	25
Pressure loss at Q₃		bar	0.22	0.54	0.54	0.2	0.2	0.14	0.14	0.33	0.33
Pressure loss at Q₄		bar	0.34	0.84	0.84	0.31	0.31	0.22	0.22	0.52	0.52
Maximum flow rate²	Q_high	m³/h	11.02	17.5	17.5	28	28	32.13	32.13	32.13	32.13
Flow rate at ΔP = 1 bar			13.43	13.43	13.43	36.0	36.0	44.0	44.0	44.0	44.0

² Outlet pressure minimum 3 bars, maximum 100 hours per year, closed pipeline network
Other on request

Approval

Approval MID DE-19-MI001-PTB012 | UK/0126/0326
Dynamic range (Q₃/Q₁) R Up to R=800
Standards EN 4064, EN 14154, OIML R49
Sanitary conformity ACS | WRAS | DM174 | BELGAQUA | KIWA

Dynamic Range (R=Q3/Q1)

Q₃ 6.3 m³/h - T30	R	400
Q₃ 6.3 m³/h - T50 / T70 / T90	R	400H / 250V
Q₃ 10 m³/h - T30	R	800
Q₃ 10 m³/h - T50 / T70 / T90	R	800H / 400V
Q₃ 16 m³/h - T30	R	800
Q₃ 16 m³/h - T50 / T70 / T90	R	800H / 400V
Q₃ 16 m³/h - DN 50 - T30 / T50 / T70 / T90	R	250
Q₃ 25 m³/h - DN 50 - T30 / T50 / T70 / T90	R	400

H=horizontal installation position / V=vertical installation position

Dimensions

Nominal diameter	DN	mm	25	25	32	40	40	50	50	50	50
Permanent flow rate	Q₃	m³/h	6.3	10	10	16	16	16	16	25	25
Overall length	L	mm	260	260	260	200	300	270	300	270	300
Counter length	L1	mm	89	89	89	96	96	92	92	92	92
Counter width	B	mm	89	89	89	89	89	94	94	94	94
Body			brass	brass	brass	brass	brass	brass	brass	brass	brass
DIMENSIONS - THREAD			.	.	.	.	.	.	.	.	.
Overall length with coupling	L2	mm	380	380	380	340	440	390	420	390	420
Connection thread on meter		Inch	G1¼B	G1¼B	G1½B	G2B	G2B	G2½B	G2½B	G2½B	G2½B
Connection thread of coupling		Inch	R1	R1	R1¼	R1½	R1½	R2	R2	R2	R2
Height	H1	mm	78	78	78	82	82	90	90	90	90
Weight without coupling (approx.)		kg	1.4	1.4	1.5	1.8	2.6	3.9	4.05	3.9	4.05
Weight with coupling (approx.)		kg	2.0	2.0	2.1	3.0	3.8	5.5	5.65	5.5	5.65
Height	H	mm	27	27	30	36	36	41	41	41	41
DIMENSIONS - FLANGE			.	.	.	.	.	.	.	.	.
Flange diameter	D	mm	115	115	140	-	148	-	-	-	-
Hole circle diameter	K	mm	85	85	100	-	110	-	-	-	-
Number of screwholes		pcs	4	4	4	-	4	-	-	-	-
Screwhole diameter	D1	mm	14	14	18	-	18	-	-	-	-
Height	H	mm	50	50	62.5	-	69	-	-	-	-
Height	H1	mm	84	84	84	-	87	-	-	-	-
Width	F	mm	100	100	125	-	138	-	-	-	-
Weight with flanges (approx.)		kg	3.4	3.4	4.6	-	6.3	-	-	-	-

Pressure loss graph / Typical error graph

Pressure loss graph

Typical error graph

Approval		MID DE-19-MI001-PTB012 \| UK/0126/0326
Dynamic range (Q₃/Q₁)	R	Up to R=800
Standards		ISO 4064 \| EN 14154 \| OIML R49
Sanitary conformity		ACS \| WRAS \| DM174 \| BELGAQUA \| KIWA

Q₃ 2.5 m³/h - T30 / T50	R	800
Q₃ 2.5 m³/h - T70 / T90	R	800H / 400V
Q₃ 4 m³/h - T30	R	800
Q₃ 4 m³/h - T50 / T70 / T90	R	800H / 400V