HYDRUS 2.0

ULTRASONIC METER

Application

HYDRUS 2.0 is a static ultrasonic water meter designed for all applications of domestic cold water supply enabling accurate measuring with long-term stability under difficult conditions (no measurement of air and insensitive to sedimentation). Developed within the framework of the MID, it complies with the European regulations and holds sanitary conformity certificates (KTW/W270, ACS, WRAS and others). The integrated communication function supports meter data provision via mobile reading (walk-by/drive-by/passive drive-by) or fixed network (upgrade without on-site configuration). In combination with Diehl Metering’s IZAR fixed network system, which stands out with excellent coverage, high data granularity and timeliness will be maintained. This is what makes it a high responsive infrastructure to take actions immediately.

Features

DN 15 to 50
MID approved with dynamic range up to R 800
IP 68 suitable for outdoor installations
Integrated radio communication based on Open Metering telegram (OMS Generation 3 or 4, Profile B)
Wired M-Bus/Pulse/Pulse, wireless M-Bus, wireless M-Bus in combination with wired L-Bus/Pulse interface
Display with error and alarm codes including leakage detection
Battery lifetime up to 16 years
U0 / D0, no need for calming sections

Privacy

The HYDRUS 2.0 saves 1024 consumption values with a daily interval. This data can be read locally and accessed only by using the IZAR@MOBILE. As a second logging, a small amount of 32 consumption values can be stored. The HYDRUS 2.0 has a minimal sending interval of about 14 seconds and uses the OMS Generation 3 (not available with radio meters with C1 mobile mode or LoRaWAN^®/C2) or 4, Profile B security level. 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			Two 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 1024 daily values +32 monthly values and two annual due dates
Protection class			IP 68

¹ 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 - DN 50			Volume (m³ + 3 decimal places) and flow rate (m³/h + 3 decimal places)
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 - display counter - low battery indication - leakage indication - metrological log access - radio signal ON/OFF - alarm indication - billing value indication - and more display loop options to choose from.

Interfaces - Overview

Optical			For switching the display loop and configuring / reading the meter via IZAR@MOBILE
Radio			434 or 868 MHz, Open Metering radio as standard (R3) for mobile reading sent every 14 / 64 seconds, long range radio frame (R4 / R4+ / mioty^® for Metering) for fixed network sent every 5 / 15 / 60 minutes
M-Bus			2400 baud, cable length 1.5 m, power supply only via built-in battery - can be combined with two Pulse outputs
L-Bus			In combination with radio, cable length 1.5 m (only one interface communicating at the same time)
Pulse (Open drain)			Two Pulse outputs, or one Pulse and one L-Bus output, Pulse cable length 1.5 m

Security

Versions OMS Generation 3 (not available with radio meters with C1 mobile mode or LoRaWAN®/C2) or OMS Generation 4, Profile B, selectable

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	Decadic 1 / 10 (depending on nominal diameter)
Pulse output 1 variants		Total volume or forward volume
Pulse output 2 variants		Flow direction or error, reverse volume
Pulse frequency		Max. frequency 10 Hz
Pulse width		50 - 125 ms

Possible Communication Interfaces

Wireless M-Bus/Pulse/L-Bus 3 wire
Wireless M-Bus only without wire
M-Bus only 2 wire
M-Bus/Pulse/Pulse 5 wire
Pulse/Pulse 3 wire
IZAR BE PULSE 4 wire

DN 15 - 20
DN 25 - 50

Technical Data

Nominal diameter	DN	mm	15	15	15	15	15³	15	15	20	20	20	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	2.5	2.5	4	4	4	4	4	4	4
Overall length	L	mm	110	165	170	110	115	165	170	115	130	190	105	115	130	165	175	190	220
Dynamic (Q₃/Q₁)	R		400	400	400	800	800	800	800	400	800	800	400	630	800	800	800	800	800
Overload flow rate	Q₄	m³/h	2	2	2	3.125	3.125	3.125	3.125	3.125	3.125	3.125	5	5	5	5	5	5	5
Transitional flow rate	Q₂	l/h	6.4	6.4	6.4	5	5	5	5	10	5	5	16	10	8	8	8	8	8
Minimum flow rate	Q₁	l/h	4	4	4	3.13	3.13	3.13	3.13	6.25	3.13	3.13	10	6.3	5	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	1.4	1.4	3.0	3.0	2.5	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	0.46	0.4	0.4	0.4	0.55	0.55	0.4	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	0.72	0.63	0.63	0.63	0.86	0.86	0.63	0.63	0.63	0.63	0.63
Maximum flow rate²	Q_high	m³/h	2.8	2.8	2.8	4.37	4.37	4.37	4.37	4.37	4.37	4.37	7	7	7	7	7	7	7
Flow rate at ΔP = 1 bar			3.67	3.67	3.67	3.69	3.69	3.69	3.69	3.95	3.95	3.95	5.39	5.39	5.39	5.39	5.39	5.39	5.39

² Outlet pressure minimum 3 bar, maximum 100 hours per year, closed pipeline network
³ Please see table DIMENSIONS

Approval

Approval MID DE-19-MI001-PTB012
Dynamic range (Q₃/Q₁) R Up to 800
Standards EN 4064, EN 14154, OIML R49
Sanitary conformity KTW/W270, ACS, WRAS, Belgaqua, KIWA Netherlands, OTH, PZH, SVGW

Dynamic Range (R=Q3/Q1)

Q₃ 1.6 m³/h - T30 / T50	R	400
Q₃ 1.6 m³/h - T70 / T90	R	400H; 250V
Q₃ 2.5 m³/h - T30 / T50	R	160; 800 (400 for L 115 mm)
Q₃ 2.5 m³/h - T70 / T90	R	160; 400; 800H / 400 V (250 for L 115 mm)
Q₃ 4 m³/h - T30	R	160; 400; 800 (630 for L 105 mm and 115 mm)
Q₃ 4 m³/h - T50 / T70 / T90	R	160; 400; 800H / 400V (630H for L 105 mm and 115 mm)

Dimensions

Nominal diameter	DN	mm	15	15	15	15	15³	15	15	20	20	20	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	2.5	2.5	4	4	4	4	4	4	4
Overall length	L	mm	110	165	170	110	115	165	170	115	130	190	105	115	130	165	175	190	220
Counter length	L1	mm	89	89	89	89	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	89	89	89	89
Overall length with coupling	L2	mm	190	245	250	190	195	245	250	215	230	290	205	215	230	295	295	290	320
Connection thread on meter		Inch	G¾B	G¾B	G¾B	G¾B	G¾B	G¾B	G¾B	G1B	G1B	G1B	G1B	G1B	G1B	G1¼B	G1¼B	G1B	G1B
Connection thread of coupling		Inch	R½	R½	R½	R½	R½	R½	R½	R¾	R¾	R¾	R¾⁴	R¾⁴	R¾	R1	R1	R¾	R¾
Height	H1	mm	71	71	71	71	71	71	71	74	74	74	74	74	74	74	74	74	74
Weight without coupling (approx.)		kg	0.7	0.8	0.8	0.7	0.7	0.8	0.8	0.8	0.8	0.9	0.8	0.8	0.8	1.0	1.0	0.9	1.2
Weight with coupling (approx.)		kg	1.1	1.2	1.2	1.1	1.1	1.2	1.2	1.2	1.2	1.3	1.2	1.2	1.2	1.6	1.6	1.3	1.4
Height	H	mm	18	18	18	18	18	18	18	21	21	21	21	21	21	27	27	21	21

³ Further version with connection thread on meter inlet G7/8B and meter outlet G3/4B on request.
⁴ Wrench size should not be bigger than 38 mm

Pressure loss graph / Typical error graph

Pressure loss graph

Typical error graph

Technical Data

Nominal diameter	DN	mm	25	25	25	25	25	25	25	32	40	40	40	40	50	50	50	50
Permanent flow rate	Q₃	m³/h	6.3	6.3	6.3	6.3	10	10	10	10	10	10	16	16	16	16	25	25
Overall length	L	mm	135	150	175	260	150	175	260	260	200	300	200	300	270	300	270	300
Dynamic (Q₃/Q₁)	R		400	400	400	400	800	800	800	800	400	400	800	800	250	250	400	400
Overload flow rate	Q₄	m³/h	7.87	7.87	7.87	7.87	12.5	12.5	12.5	12.5	12.5	12.5	20	20	20	20	31.25	31.25
Transitional flow rate	Q₂	l/h	25.2	25.2	25.2	25.2	20	20	20	20	40	40	32	32	102	102	100	100
Minimum flow rate	Q₁	l/h	15.8	15.8	15.8	15.8	12.5	12.5	12.5	12.5	25	25	20	20	64	64	62.5	62.5
Starting flow rate		l/h	5	5	5	5	5	5	5	5	8.7	8.7	8.7	8.7	25	25	25	25
Pressure loss at Q₃		bar	0.22	0.22	0.22	0.22	0.54	0.54	0.54	0.33	0.22	0.22	0.2	0.2	0.14	0.14	0.33	0.33
Pressure loss at Q₄		bar	0.34	0.34	0.34	0.34	0.84	0.84	0.84	0.53	0.34	0.34	0.31	0.31	0.22	0.22	0.52	0.52
Maximum flow rate²	Q_high	m³/h	11.02	11.02	11.02	11.02	17.5	17.5	17.5	17.5	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	13.43	13.43	13.43	13.43	10.95	21.32	21.32	36.0	36.0	44.0	44.0	44.0	44.0

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

Approval

Approval MID DE-19-MI001-PTB012
Dynamic range (Q₃/Q₁) R Up to 800
Standards EN 4064, EN 14154, OIML R49
Sanitary conformity KTW/W270, ACS, WRAS, Belgaqua, KIWA Netherlands, OTH, PZH, SVGW

Dynamic Range (R=Q3/Q1)

Q₃ 6.3 m³/h - T30	R	160; 400
Q₃ 6.3 m³/h - T50 / T70 / T90	R	160; 400H / 250V
Q₃ 10 m³/h - DN 25, DN 32 - T30	R	160; 400; 800
Q₃ 10 m³/h - DN 25, DN 32 - T50 / T70 / T90	R	160; 400; 800H / 400V
Q₃ 16 m³/h - DN 40 - T30	R	160; 400; 800
Q₃ 16 m³/h - DN 40 - T50 / T70 / T90	R	160; 400; 800H / 400 V
Q₃ 16 m³/h - DN 50	R	250
Q₃ 25 m³/h - DN 50	R	400

Dimensions

Nominal diameter	DN	mm	25	25	25	25	25	25	25	32	40	40	40	40	50	50	50	50
Permanent flow rate	Q₃	m³/h	6.3	6.3	6.3	6.3	10	10	10	10	10	10	16	16	16	16	25	25
Overall length	L	mm	135	150	175	260	150	175	260	260	200	300	200	300	270	300	270	300
Counter length	L1	mm	89	89	89	89	89	89	89	89	96	96	96	96	92	92	92	92
Counter width	B	mm	89	89	89	89	89	89	89	89	89	89	89	89	94	94	94	94
DIMENSIONS - THREAD			.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.
Overall length with coupling	L2	mm	255	270	295	380	270	295	380	380	340	440	340	440	390	420	390	420
Connection thread on meter		Inch	G1¼B	G1¼B	G1¼B	G1¼B	G1¼B	G1¼B	G1¼B	G1½B	G2B	G2B	G2B	G2B	G2½B	G2½B	G2½B	G2½B
Connection thread of coupling		Inch	R1	R1	R1	R1	R1	R1	R1	R1¼	R1½	R1½	R1½	R1½	R2	R2	R2	R2
Height	H1	mm	78	78	78	78	78	78	78	78	82	82	82	82	90	90	90	90
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	1.8	2.6	3.9	4.05	3.9	4.05
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	3.0	3.8	5.5	5.65	5.5	5.65
Height	H	mm	27	27	27	27	27	27	27	30	36	36	36	36	41	41	41	41
DIMENSIONS - FLANGE			.	.	.	.	.	.	.	.	.	.	.	.	.	.	.	.
Flange diameter	D	mm	-	-	-	115	-	-	115	140	-	148	-	148	-	-	-	-
Hole circle diameter	K	mm	-	-	-	85	-	-	85	100	-	110	-	110	-	-	-	-
Number of screwholes		pcs	-	-	-	4	-	-	4	4	-	4	-	4	-	-	-	-
Screwhole diameter	D1	mm	-	-	-	14	-	-	14	18	-	18	-	18	-	-	-	-
Height	H	mm	-	-	-	50	-	-	50	62.5	-	69	-	69	-	-	-	-
Height	H1	mm	-	-	-	84	-	-	84	84	-	87	-	87	-	-	-	-
Width	F	mm	-	-	-	100	-	-	100	125	-	138	-	138	-	-	-	-
Weight with flanges (approx.)		kg	-	-	-	3.4	-	-	3.4	4.6	-	6.3	-	6.3	-	-	-	-

Pressure loss graph / Typical error graph

Pressure loss graph

Typical error graph

Wireless M-Bus/Pulse/L-Bus			3 wire
Wireless M-Bus only			without wire
M-Bus only			2 wire
M-Bus/Pulse/Pulse			5 wire
Pulse/Pulse			3 wire
IZAR BE PULSE			4 wire

Approval		MID DE-19-MI001-PTB012
Dynamic range (Q₃/Q₁)	R	Up to 800
Standards		EN 4064, EN 14154, OIML R49
Sanitary conformity		KTW/W270, ACS, WRAS, Belgaqua, KIWA Netherlands, OTH, PZH, SVGW

HYDRUS 2.0

ULTRASONIC METER

Application

Features

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