Engelmann WaterStar M

The electronic water meter for all common installation points with integrated wireless M-Bus communication interface.

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Description Technical Data Specification

WaterStar M

The WaterStar M is the perfect electronic water meter for every installation situation and every requirement. Thanks to its inductive impeller scanning, it detects the amount of water consumed in drinking water systems with high precision. With various single-jet versions in different lengths and measuring capsule variants for all common installation interfaces, it offers the right solution for every requirement.

The WaterStar M is not only highly precise and flexible, but also easy to handle. Thanks to its digital display, you can always see the consumption values. The meter is available in different variants as cold and hot water meters, which makes it a reliable solution for any application.

The integrated 868 MHz radio enables time-saving and reliable remote reading. Thanks to OMS-compliant radio communication, you can conveniently read out your meter data at any time via your AMR system or by walk-by. The radio settings as well as the automatic radio activation of the WaterStar M can be flexibly adapted and make the meter an ideal solution for your requirements. Encryption in OMS Mode 5 or optionally in OMS Mode 7 ensures secure transmission of meter data. The transmission of 15 historical monthly values in the radio telegram enables you to perform a detailed analysis of water consumption over the entire billing period.

Technical data

Parameter	Specification
Display	LCD – 8 digits + special characters; display can be rotated 360°
Unit	m³
Billing dates	Freely selectable annual billing date; 15 monthly values via radio; 15 monthly and semi-monthly values via optical interface
Interfaces	Wireless M-Bus; optical interface for configuration and readout
Temperature range	T30: 0.1 – 30 °C T30/90: 30 – 90 °C
Ambient temperature (in the field)	5 – 55 °C at 95% relative humidity
Storage and transport temperature range	-25 – 70 °C

Type-specific data (Inline meters)

Type	DN 15	DN 15	DN 15	DN 15	DN 15	DN 20	DN 20
Installation length [mm]	80	110	115	115	130	130	130
Q₃ [m³/h]	2.5	2.5	2.5	2.5	2.5	2.5	4.0
Low flow threshold value [l/h]	6	6	6	6	6	6	6
Thread	G3/4″	G3/4″	G3/4″	–	G7/8″	G3/4″	G1″
Ratio Q₃/Q₁	R160 H / R80 V
Weight approx. [kg]	0.245	0.289	0.286	0.299	0.367	0.348	0.348

Measuring capsule meters

Parameter	IST	MET	TE1	MOC/MOE	A34
Q₃ [m³/h]	2.5	2.5	2.5	2.5	2.5
Low flow threshold value [l/h]	6	6	6	6	6
Thread	G2″	M64×2	M62×2	M65×2	M77×1.5
Ratio Q₃/Q₁	R80
Weight approx. [kg]	0.099	0.074	0.087	0.074 / 0.081	0.143

Measuring capsule meters with converter

Parameter	MUK	DM1	HT2	MB3	WE1	WGU
Q₃ [m³/h]	2.5	2.5	2.5	2.5	2.5	2.5
Low flow threshold value [l/h]	6	6	6	6	6	6
Thread	G2¼”	M60×2	M66×1	M76×1.5	M78×1.5	M66×1.25
Ratio Q₃/Q₁	R80
Weight approx. [kg]	0.296	0.275	0.264	0.337	0.381	0.263

Easily readable digital LCD display
Inductive impeller scanning
Return flow detection
Battery capacity: 12 years
Integrated 868 MHz wireless M-Bus
Cold or warm water meters
Surface-mounted and measuring capsule variants for all common installation sites
Encryption OMS 4 Mode 5 or Mode 7
T1 and C1 mode selectable
15 monthly values submittable by wireless M-Bus
15 monthly and 15 semimonthly values readable via optical interface
Walk-by and AMR telegram selectable
Automatic radio activation after accumulated volume
Leakage and tampering detection
Housing diameter 64,5 mm
360° rotatable display
Horizontal and vertical installation possible