DIEHL DN 15 Hydrus Ultrasonic Hot Water Meter Installation Guide

DIEHL DN 15 Hydrus Ultrasonic Hot Water Meter

Product Information

• The HYDRUS is a meter that provides data on flow rate, volume, date, due date, and medium temperature. It has display loops numbered from 01 to 09, which can be scrolled using the optical button located on the front panel. The meter automatically switches to power save mode after 4 minutes of inactivity to save battery life. The display shows a screen check and then the total volume for at least 10 seconds after awakening.
• The meter supports various units of measurement such as gallon, cubic meter per hour, cubic foot per hour, kiloliter per hour, and  gallon per minute. It also provides information on battery lifetime, firmware version, current flow, error/alarm status, calibration modification, radio status, and more.
• The HYDRUS is made in Europe in 2021 and has a serial number, QR  code, and various labels indicating conformity, examination certificate number, protection class, temperature class, and more. It also has pulse outputs for external devices and communication interfaces.

Installation

• The data generated by the meter can be viewed in the display loop with system information (e.g. flow rate, volume, date, due date, medium temperature). The loops are numbered from 01 to 09.
• The optical button located on the front panel enables scrolling the display loops.
• To save battery lifetime, the meter switches automatically to power save mode after 4 minutes of inactivity. The display is awakened again by pressing the optical button.
• After awakening, the display shows first a screen check (i.e. all symbols in the display are briefly switched on and off) and then the total volume. This remains for at least 10 seconds on the display (also when the optical button is pressed). Afterwards the display loop can be switched with the help of the optical button.

Display loop

88| Displaytest| 05| Error / Alarms
01| Total volume| 07| High resolution total volume
02| Battery lifetime| 08| Due date / Due date volume
03| Firmware version / Checksum| 09| Reverse volume
04| Current flow

Pulse outputs (open drain)

configuration (detailed description on request)

Connection diagram for passive evaluation devices (e.g. PLC)

The pulse outputs of the HYDRUS are wired as open-drain, i.e. there is no current limitation internally in the meter. In order to assure functional reliability, a protective resistor is absolutely necessary for each pulse out- put, taking into account the input voltage (maximum 30 V) and the input current (maximum 27 mA).

Example of calculating the protective resistor of a standard PLC with 24 VDC and input current 24 mA: R= U/I = 24 V / 24 mA = 1 kOhm

Cable pin assignment

The Radio/L-Bus/Pulse, Pulse/Pulse and M-Bus/Pulse/Pulse versions of the meter are supplied with a 1.5 m 2/3/4/5-wire connecting cable with wire end ferrules.

| Radio/ L-Bus/ Pulse| Pulse/ Pulse| M-Bus/ Pulse/ Pulse| M-Bus| 4-Wire Pulse
---|---|---|---|---|---
M-Bus| | | x| x|
Pulse, Output 1| | x| x| | x
Pulse, Output 2| x| x| x| | x
L-Bus| x| |

Connection (network name)

Never connect the external M-Bus to the pulse output of the meter! It will destroy the pulse output and lead to the loss of all factory warranty claims.

Radio specifications

Sending intervals| Every 14 … 256 seconds (variable, according to 0.1 duty cycle (min. 14 seconds); depending on protocol length and programming)
---|---
434 MHz frequency band| Transmission power (EN 300 220-2 V3.2.1): 10 mW e.r.p.
868 MHz frequency band| Transmission power (EN 300 220-2 V3.2.1): 25 mW e.r.p

Venting

In the event that complete venting of the meter is not possible, please install the meter at an angle of 45°!

Instructions

Open Source Software Notice

• This product contains open source software components.
• The use and distribution of any open source software is governed by respective terms and conditions of the applicable open source license. By using this product, you acknowledge that you have reviewed such license terms and notices, and you agree to be obliged by these terms.
• Please insure that you get yourself familiar with the licenses terms and conditions before using this product. The complete license terms are available in the DIEHL Metering Download-center: https://www.diehl.com/metering/en/support-center/download-center/If you have any questions regarding open source software used in this product, please contact DIEHL Metering support:
  oss-dmde@diehl.com

UK Declaration of Conformity

1. Instrument model/instrument
2. Name and address of the manufacturer: Diehl Metering
3. This declaration of conformity is issued under the sole responsibility of the manufacturer
4. Object of the declaration:
5. The object of the declaration described above is in conformity with the relevant UK statutory requirements
   • 2016 No. 1091 The Electromagnetic Compatibility Regulations 2016 with Amendments
   • 2016 No. 1153 The Measuring Instruments Regulations 2016 with Amendments
   • 2017 No. 1206 The Radio Equipment Regulations 2017 with Amendments
   • 2012 No. 3032 The Restriction of the Use of Certain Hazardous Substances in Electrical and Electronic Equipment Regulations 2012 with Amendments
6. References to the relevant designated standards or normative documents used or references to the other technical specifications in relation to which conformity is declared
7. The approved body NMO, Approved Body number 0126, performed type examination and issued the type examination certificate UK/0126/0325.
   The approved body LNE-GMED UK., Approved Body number UKAB N° 8521, performed quality assurance of the production process and issued the certificate: N° UKCA- 39079 rev. 0

Diehl Metering

GmbH Industriestrasse 13 91522 Ansbach

• Phone : +49 981 1806-0
• Fax : +49 981 1806-615
• info-dmde@diehl.com

www.diehl.com/metering

References

• Download Center | Diehl Metering
• Download Center | Diehl Metering

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