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, KTW/W270 and others).
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 40
MID approval up to R=800
IP 68
Wireless M-Bus radio, Wired M-Bus/Pulse/Pulse, Wireless M-Bus radio/L-Bus/Pulse, IZAR BE PULSE compatible, M-Bus, Pulse/Pulse
Display with alarm codes including leakage detection, radio on and error codes
Battery lifetime up to 16 years

Privacy

The HYDRUS 2.0 RESIDENTIAL saves 512 consumption values with a daily interval. This data can be read locally and accessed only by using the IZAR@MOBILE 2. As a second logging, a small amount of 32 consumption values can be stored. 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)
- Lead titanium zirconium oxide

General

Medium temperature range		°C	+0.1 ... +50
Ambient operating temperature		°C	-10 ... +55
Ambient storage temperature		°C	-10 ... +70 (>35 °C max. 4 weeks)
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 wireless M-Bus 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 512 daily values + 32 monthly values and an annual due date
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 DN 15 - 32			Volume (m³ + 3 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 -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 - calibrated value

Communication interfaces

Optical			For switching the display loop, reading and configuration with IZAR@MOBILE 2
Radio			434 or 868 MHz, Open Metering Standard radio frame for mobile reading sent every 14 seconds, long range radio frame for fixed network sent every 15 minutes
M-Bus			2,400 baud, cable length 1.5 m*, power supply only via built-in battery - can be combined with 2 pulse outputs
L-Bus			In combination with radio, cable length 1.5 m* (only 1 interface communicating at the same time) and 1 pulse output
Pulse (Open drain)			2 pulse outputs, or 1 pulse and 1 L-Bus output, pulse cable length 1.5 m*

*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 or error, reverse volume, forward volume
Pulse frequency		Max. frequency 10 Hz
Pulse width		125 ms

Available versions

Wireless M-Bus radio/Pulse/L-Bus			3 wires - only forward volume for pulse output 2 (minimum 10L/pulse)
Wireless M-Bus radio only			without wire
M-Bus only			2 wires
M-Bus/Pulse/Pulse			5 wires - forward volume on pulse output 1 and reverse volume on pulse output 2
Pulse/Pulse			3 wires - total volume on pulse output 1 and direction on pulse output 2
IZAR BE PULSE compatible			4 wires - total volume on pulse output 1 and direction on pulse output 2 with fraud

DN 15 - 20
DN 25 - 40

Technical Data

Nominal diameter	DN	mm	15	15	15	15	15	15	20	20	20	20	20	20	20
Permanent flow rate	Q₃	m³/h	1.6	1.6	1.6	2.5	2.5	2.5	2.5	2.5	4	4	4	4	4
Overall length	L	mm	110	165	170	110	165	170	130	190	105	130	175	190	220
Dynamic (Q₃/Q₁)	R		400	400	400	800	800	800	800	800	400	800	800	800	800
Overload flow rate	Q₄	m³/h	2	2	2	3.125	3.125	3.125	3.125	3.125	5	5	5	5	5
Transitional flow rate	Q₂	l/h	6.4	6.4	6.4	5	5	5	5	5	16	8	8	8	8
Minimum flow rate	Q₁	l/h	4	4	4	3.13	3.13	3.13	3.13	3.13	10	5	5	5	5
Starting flow rate		l/h	1.4	1.4	1.4	1.4	1.4	1.4	1.4	1.4	3.0	2.5	2.5	2.5	2.5
Pressure loss at Q₃		bar	0.19	0.19	0.19	0.46	0.46	0.46	0.4	0.4	0.55	0.4	0.4	0.4	0.4
Pressure loss at Q₄		bar	0.3	0.3	0.3	0.72	0.72	0.72	0.63	0.63	0.86	0.63	0.63	0.63	0.63
Maximum flow rate ²	Q_high	m³/h	2.8	2.8	2.8	4.37	4.37	4.37	4.37	4.37	7	7	7	7	7
Flow rate at ΔP = 1 bar			3.67	3.67	3.67	3.69	3.69	3.69	3.95	3.95	5.39	5.39	5.39	5.39	5.39

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

Approval

Approval MID DE-19-MI001-PTB012
Dynamic range (Q₃/Q₁) R Up to R=800
Standards ISO 4064 | EN 14154 | OIML R49
Sanitary conformity KTW/W270 | ACS | WRAS
Dynamic Range (Q3/Q1)

Q₃ 1.6 m³/h - T30 R 160 / 400
Q₃ 2.5 m³/h - T30 R 160 / 400 / 800
Q₃ 4 m³/h - T30 R 160 / 400 / 800 (630 for L 105 mm)
Q₃ 4 m³/h - T50 R 160 / 400 / 800H - 400V (630 for L 105 mm)
H=horizontal installation position / V=vertical installation position

Dimensions

Nominal diameter	DN	mm	15	15	15	15	15	15	20	20	20	20	20	20	20
Permanent flow rate	Q₃	m³/h	1.6	1.6	1.6	2.5	2.5	2.5	2.5	2.5	4	4	4	4	4
Overall length	L	mm	110	165	170	110	165	170	130	190	105	130	175	190	220
Counter length	L1	mm	89	89	89	89	89	89	89	89	89	89	89	89	89
Counter width	B	mm	89	89	89	89	89	89	89	89	89	89	89	89	89
Overall length with coupling	L2	mm	190	245	250	190	245	250	230	290	205	230	295	290	320
Connection thread on meter		Inch	G¾B	G¾B	G¾B	G¾B	G¾B	G¾B	G1B	G1B	G1B	G1B	G1¼B	G1B	G1B
Connection thread of coupling		Inch	R½	R½	R½	R½	R½	R½	R¾	R¾	R¾³	R¾	R1	R¾	R¾
Height	H1	mm	71	71	71	71	71	71	74	74	74	74	74	74	74
Weight without coupling (approx.)		kg	0.7	0.8	0.8	0.7	0.8	0.8	0.8	0.9	0.8	0.8	1.0	0.9	1.2
Weight with coupling (approx.)		kg	1.1	1.2	1.2	1.1	1.2	1.2	1.2	1.3	1.2	1.2	1.6	1.3	1.4
Height	H	mm	18	18	18	18	18	18	21	21	21	21	27	21	21

³ Wrench size should not exceed 38 mm

Pressure loss graph / Typical error graph

Technical Data

Nominal diameter	DN	mm	25	25	25	25	25	25	25	32	40	40
Permanent flow rate	Q₃	m³/h	6.3	6.3	6.3	6.3	10	10	10	10	16	16
Overall length	L	mm	135	150	175	260	150	175	260	260	200	300
Dynamic (Q₃/Q₁)	R		400	400	400	400	800	800	800	800	800	800
Overload flow rate	Q₄	m³/h	7.87	7.87	7.87	7.87	12.5	12.5	12.5	12.5	20	20
Transitional flow rate	Q₂	l/h	25.2	25.2	25.2	25.2	20	20	20	20	32	32
Minimum flow rate	Q₁	l/h	15.8	15.8	15.8	15.8	12.5	12.5	12.5	12.5	20	20
Starting flow rate		l/h	5	5	5	5	5	5	5	5	8.7	8.7
Pressure loss at Q₃		bar	0.22	0.22	0.22	0.22	0.54	0.54	0.54	0.54	0.5	0.5
Pressure loss at Q₄		bar	0.34	0.34	0.34	0.34	0.84	0.84	0.84	0.84	0.78	0.78
Maximum flow rate ²	Q_high	m³/h	11.02	11.02	11.02	11.02	17.5	17.5	17.5	17.5	28	28
Flow rate at ΔP = 1 bar			13.43	13.43	13.43	13.43	13.43	13.43	13.43	13.43	22.63	22.63

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

Approval

Approval MID DE-19-MI001-PTB012
Dynamic range (Q₃/Q₁) R Up to R=800
Standards ISO 4064 | EN 14154 | OIML R49
Sanitary conformity KTW/W270 | ACS | WRAS

Dynamic Range (Q3/Q1)

Q₃ 6.3 m³/h - T30	R	160 / 400
Q₃ 6.3 m³/h - T50	R	160 / 400H - 250V
Q₃ 10 m³/h - DN 25 - T30	R	160 / 400 / 800
Q₃ 10 m³/h - DN 25 - T50	R	160 / 400 / 800H - 400V
Q₃ 16 m³/h - T30	R	160 / 400 / 800
Q₃ 16 m³/h - T50	R	160 / 400 / 800H - 400 V

H=horizontal installation position / V=vertical installation position

Dimensions

Nominal diameter	DN	mm	25	25	25	25	25	25	25	32	40	40
Permanent flow rate	Q₃	m³/h	6.3	6.3	6.3	6.3	10	10	10	10	16	16
Overall length	L	mm	135	150	175	260	150	175	260	260	200	300
Counter length	L1	mm	89	89	89	89	89	89	89	89	96	96
Counter width	B	mm	89	89	89	89	89	89	89	89	89	89
DIMENSIONS - THREAD			.	.	.	.		.	.	.	.	.
Overall length with coupling	L2	mm	255	270	295	380	270	295	380	380	340	440
Connection thread on meter		Inch	G1¼B	G1¼B	G1¼B	G1¼B	G1¼B	G1¼B	G1¼B	G1½B	G2B	G2B
Connection thread of coupling		Inch	R1	R1	R1	R1	R1	R1	R1	R1¼	R1½	R1½
Height	H1	mm	78	78	78	78	78	78	78	78	82	82
Weight without coupling (approx.)		kg	1.0	1.0	1.1	1.4	1.0	1.4	1.4	1.5	1.8	2.6
Weight with coupling (approx.)		kg	1.6	1.6	1.7	2.0	1.6	2.0	2.0	2.1	3.0	3.8
Height	H	mm	27	27	27	27	27	27	27	30	36	36
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

Divisions