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DN50 - DN200 High - Precision Detachable Water Meters

The WS High-Precision Vertical Woltmann Detachable Water Meter, hereinafter referred to as the "Water Meter," employs a vertical Woltmann (helix-shaped rotor) structure, combining the advantages of horizontal Woltmann and vane-type water meters.

It utilizes full-flow detection with a low-inlet and high-outlet design, ensuring high measurement accuracy, particularly excelling in precision at low flow rates compared to other types of water meters. This product is suitable for environments with significant flow variations and features a built-in stainless steel filter, making it ideal for domestic water conditions and ensuring long-term stable operation.

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Features

● Accuracy: Class 2

● Installation Method: Horizontal Installation.

● Temperature Class: Cold water: T30(0.1~30℃) or T50 (0.1~50℃).

Hot water T90: 0.1~90℃.

● Working Pressure: 1.0MPa or 1.6MPa.

● Flow Field Sensitivity Class: U10/D5.

● Pressure Loss Class: △p63.

● Flow Rate Parameters: Q3 /Q1=200，Q4 /Q3=1.25，Q2 /Q1=1.6.

Technical Specifications

● Accuracy: Class 2.

● Installation Method: Horizontal Installation.

● Temperature Class: Cold water: T30(0.1~30℃) or T50 (0.1~50℃).

Hot water T90: 0.1~90℃.

● Working Pressure: 1.0MPa or 1.6MPa.

● Flow Field Sensitivity Class: U10/D5.

● Pressure Loss Class: △p63.

● Flow Rate Parameters: Q3 /Q1=200，Q4 /Q3=1.25，Q2 /Q1=1.6.

● Maximum Permissible Error: Lower Flow Range (Q1 ≤ Q < Q2): ±5%, Upper Flow Range (Q2 ≤ Q < Q4): ±2%.

Model	Diameter（mm）	Q3(m3/h)	Q3 /Q1
WS	50	25	R200
	65	40
	80	63
	100	100
	150	250
	200	400

Main parameter

Diameter	DN50～DN400
Accuracy	EN1434 or GB/T32224 Class 2
Flow range	50：1
Protection grade	IP65
Temperature range	2～95℃
Temperature difference	2～85 K
Power supply	（M-BUS meter bus supply& battery supply）or battery supply only	DC24V external power supply & battery supply
Communication interface	M-Bus、Photoelectric reading head	RS485、Photoelectric reading head
Protocol	Basic、EN13757、CJ188	MODBUS RTU、BACnet MS/TP

Overall Dimensions

Note: If there are special requirements for the connection flange, please specify them when placing the order.

Diameter (DN)mm	Length (L)mm	Height (H)mm	Disassembly Height >G mm	The Connection Flange Standard Complies with GB/T 17241.6(PN10)
Diameter (DN)mm	Length (L)mm	Height (H)mm	Disassembly Height >G mm	Flange Outer Diameter øD(mm)	B.C.D. øD1(mm)	Number of Bolts on One Side and Bolt Specification
DN50	280	228	262	165	125	4-M16
DN65	300	238	262	185	145	4-M16
DN80	370	290	361	200	160	8-M16
DN100	370	306	380	220	180	8-M16
DN150	500	445	607	285	240	8-M20
DN200	500	564	720	340	295	8-M20

Diameter (DN)mm	Length (L)mm	Height (H)mm	Disassembly Height >G mm	The Connection Flange Standard Complies with GB/T 17241.6(PN16)
Diameter (DN)mm	Length (L)mm	Height (H)mm	Disassembly Height >G mm	Flange Outer Diameter øD(mm)	B.C.D. øD1(mm)	Number of Bolts on One Side and Bolt Specification
DN50	280	228	262	165	125	4-M16
DN65	300	238	262	185	145	4-M16
DN80	370	290	361	200	160	8-M16
DN100	370	306	380	220	180	8-M16
DN150	500	445	607	285	240	8-M20
DN200	500	564	720	340	295	12-M20

Flow code	Diameter DN(mm)	Height H(mm)	D(mm)	Length L（mm）	D1	n-M
N400	250	460	405	450	355	12-M22
N600	300	503	460	500	410	12-M22
N800	350	560	520	550	470	16-M22
N1000	400	613	580	600	525	16-M26

Transportation & Storage

● Handle the instrument carefully during transportation to avoid severe impact.

● Storage environment temperature (-25 ～ 55) ℃, relative humidity is less than 80%, prevent strong electromagnetic field and direct sunlight.

● The product stored at least 30cm away from the ground, at least 1m away from the four walls, and no less than 2m away from the heating equipment.

● Keep the warehouse dry and free of corrosive materials, gases and dangerous goods.

Water meter user manual (V2)

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