zenner multyjet wataer meter b class

About zenner multyjet wataer meter b class

What Class B Means

Under standards like ISO4064 / OIML R49 / MID etc., multijet water meters are classified by accuracy. Class B means a certain error tolerance, typically 2% in the normal/nominal to maximum flow range, and larger error (e.g. 5%) at very low flows (from minimum up to transitional). This is typical for domestic meters.
Class B often correlates with R160 or similar metrological class (saying how much ratio the meter can handle between minimum and maximum flow) in European/MID systems. Zenner often lists R160, R200 etc. zenneraquamet.com+2Brunata -

Typical Features of Zenner Multijet Meters (Domestic / Class B)

From Zenners product lines (MTKD, MNK, MTKDS etc.), here are the common specs and design features:

Feature	Description / Typical Spec
Measuring Principle	Multijet (multijet) impeller turbine type. Water enters via multiple jets to spin an internal rotor, then gears carry rotation to register. (Zenners MNK, MTKD etc.) zenneraquamet.com+2ZENNER International+2
Register / Dial	Usually wet dial or dry dial depending on model. Some have semidry or protected rollers. UVresistant transparent cover. Some are sealed (IP ratings) to protect from condensation / water ingress. ZENNER Connect+2zenneraquamet.com+2
Housing / Construction Material	Commonly brass bodies; some models with polymer / glassfiber reinforced plastic bodies (lighter weight) especially in smallsize meters. Register caps often made of UVresistant polymer. ZENNER Connect+2zenneraquamet.com+2
Size / Diameter	Typical sizes for domestic Class B multijet meters: DN15 (), DN20 (), DN25 (1); sometimes up to DN40 for larger domestic or small commercial. zenneraquamet.com+2Land and Water Technology+2
Flow Parameters	Nominal flow (Qn, Q3 in Zenner datasheets) typically around 2.5 m/h for certain models, or somewhat lower for smaller sizes. Minimum flow and transitional flow as per standard, error 2% above transitional etc. Land and Water Technology+2ZENNER Connect+2
Temperature & Pressure	Designed for cold potable water up to about 50C; maximum operating pressure often MAP 16 (i.e. 16 bar) for many models. ZENNER International+3ZENNER International+3zenneraquamet.com+3
Mounting / Orientation	Many Zenner models allow horizontal installation; some allow vertical or even inclined / ascending/descending pipe runs. zenneraquamet.com+2Land and Water Technology+2
Protection / Durability Features	Sealed registers (IP ratings e.g. IP65, IP68 for premium models); antimagnet or magnetic tamper protection; protected rollers; lightweight plastic covers, etc. zenneraquamet.com+2ZENNER Connect+2
Remote Read / AMR Options	Many models equipped or retrofittable with pulse outputs (reed switch), wirelessMBus, or LoRaWAN modules for automatic meter reading. ZENNER International+2zenneraquamet.com+2