RAY FS WP MID

MECHANICAL FLOW SENSOR

Application

RAY FS WP is a Woltman volume measuring device with a built-in pulse transmitter to measure heat for billing hot water consumption (max. 120°C). Its helix axis is parallel to the pipe ensuring low resistance to flowing and limited pressure loss.

Features

MI004 approval in class 2 with dynamic range 10:1 (qp:qi)
Complete range from DN50 qp 15 m³/h to DN200 qp 200 m3/h
Remote transmission of quantities of flow (3 m cable), compatible with calculators with pulse input
Installation in any position
Register can be rotated as required for easier reading
Very low pressure loss
Encapsulated and waterproof meter
As a safeguard against magnetic influences, a sealable anti magnetic screen is fitted on the meter
Temperature range: 10°C to 120°C

RAY FS WP

General

Application			Heating
Mounting position			Any position
Medium temperature range		°C	10 ... 120
Ambient temperature		°C	5 ... 55
Ambient class			E1 + M1
Nominal pressure	PN	bar	16¹
Protection class			IP 54
Approval			MID (DE-15-MI004-PTB004)

¹special version on request

Technical data

Nominal diameter	DN	mm	50	65	80	150	200
Nominal flow rate	q_p	m³/h	15	25	32	200	200
Overload flow rate (short term)		m³/h	60	60	90	400	500
Maximum flow rate	q_s	m³/h	30	30	45	300	300
Minimum flow rate	q_i	m³/h	1.5	2.5	3.2	20	20
Starting flow rate		l/h	130	130	400	1,500	2,000
Pressure loss at q_p	Δp	bar	0.02	0.02	0.01	0.05	0.002
Flow resistance coefficient Zeta			0.9	0.9	0.65	1	0.13
Pulse value reed switch ¹		l/pulse	100	100	100	1,000	1,000
Dynamic range ²		q_p / q_i	10:1	10:1	10:1	10:1	10:1

¹other pulse values on request
²other q_p / q_i on request

Display range

Nominal diameter DN mm 50 65 80 150 200
0.5 l ... 999,999 m³ • • •
5.0 l ... 9,999,999 m³ • •

Dimensions

Nominal diameter	DN	mm	50	65	80	150	200
Overall length	L	mm	200	200	225	300	350
Flange diameter	D	mm	165	185	200	285	340
Hole circle diameter	K	mm	125	145	160	240	295
Number of screwholes		pcs	4	4	8	8	8 / 12
Screwhole diameter	D1	mm	18	18	18	22	22
Height	H	mm	75	82.5	94	135	163
Height (without counter extension)	H1	mm	141	141	141	244	244
Height (with counter extension)	H1	mm	182	182	182	284	284
Diameter	ØB	mm	150	150	150	285	340
Weight		kg	11.1	11.6	12.5	39	49

Pressure loss graph / Typical error graph

Nominal diameter	DN	mm	50	65	80	150	200
0.5 l ... 999,999 m³			•	•	•
5.0 l ... 9,999,999 m³						•	•