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Diehl Hydrus 171B User Manual

Diehl Hydrus 171B
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Note on radio function
The radio function is switched off on delivery and activated auto-
matically when water is detected in the meter. The radio function
remains permanently active after a period of continuous opera-
tion (>3 hours) with water.
If necessary local the radio function can be permanently switched
off using IZAR@MOBILE 2.
Thereafter an automatic activation of the radio function is no
longer possible without IZAR@MOBILE 2.
Change of conguration may cause loss of OMS-certication.
2. Transport and storage
When sending wireless measuring instruments / components by
air, deactivate the wireless before shipping.
Water meters are precision devices and must be protected against
impact and vibration!
Store meters in a frost-free place (also during transport).
The meter can be damaged by frost.
3. Installation / Initial operation
If a risk of frost exists, empty the system and, if necessary, remove
the meter.
Thoroughly ush out the pipes before installing the meter.
If the water is soiled, t the dirt trap in the conduit in front of the meter.
The meter is to be installed so that the direction of the arrow on the
meter housing corresponds to the direction of ow.
Avoid the collection of air bubbles in the meter during the installation
process.
Make sure the meter is installed sufciently far away from possible
sources of electromagnetic interference (switches, electric motors,
uorescent lamps, etc.).
Calming sections before and after the meter are not necessary.
HYDRUS
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Diehl Hydrus 171B Specifications

General IconGeneral
TypeUltrasonic Water Meter
Protection ClassIP68
CommunicationM-Bus, Wireless M-Bus, LoRaWAN
AccuracyClass 2
Medium Temperature Range0.1°C to 50°C
Output SignalsPulse, M-Bus
Power SupplyBattery
MaterialBrass

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